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authorSascha Hauer <s.hauer@pengutronix.de>2011-12-07 12:03:13 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2011-12-07 12:03:13 +0100
commit0ee6847f7b6d396d3756f6ecd0781a00b9cca980 (patch)
tree1f1bed639ac0bbc9091685538c791b4648f4c342 /lib
parent61b62f6d33d55c9b89ba8a6fbae84cb9c33e342a (diff)
parent8b3d10265da20b8be6138799cee704d53dee1c63 (diff)
downloadbarebox-0ee6847f7b6d396d3756f6ecd0781a00b9cca980.tar.gz
barebox-0ee6847f7b6d396d3756f6ecd0781a00b9cca980.tar.xz
Merge branch 'next'
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig6
-rw-r--r--lib/Makefile5
-rw-r--r--lib/bzlib.c1592
-rw-r--r--lib/bzlib_crctable.c145
-rw-r--r--lib/bzlib_decompress.c674
-rw-r--r--lib/bzlib_huffman.c229
-rw-r--r--lib/bzlib_randtable.c126
-rw-r--r--lib/copy_file.c21
-rw-r--r--lib/decompress_bunzip2.c756
-rw-r--r--lib/decompress_inflate.c183
-rw-r--r--lib/decompress_unlzo.c27
-rw-r--r--lib/gunzip.c85
-rw-r--r--lib/lzo/Kconfig1
-rw-r--r--lib/uncompress.c159
-rw-r--r--lib/vsprintf.c2
-rw-r--r--lib/zlib.c2158
-rw-r--r--lib/zlib_inflate/Makefile18
-rw-r--r--lib/zlib_inflate/inffast.c363
-rw-r--r--lib/zlib_inflate/inffast.h11
-rw-r--r--lib/zlib_inflate/inffixed.h94
-rw-r--r--lib/zlib_inflate/inflate.c918
-rw-r--r--lib/zlib_inflate/inflate.h111
-rw-r--r--lib/zlib_inflate/inftrees.c315
-rw-r--r--lib/zlib_inflate/inftrees.h59
-rw-r--r--lib/zlib_inflate/infutil.c47
-rw-r--r--lib/zlib_inflate/infutil.h25
-rw-r--r--lib/zlib_inflate/modules.builtin1
27 files changed, 3089 insertions, 5042 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 531398f7c1..e16dd35715 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -1,8 +1,9 @@
+menu "Library routines"
config ZLIB
- bool
+ bool "include gzip uncompression support"
config BZLIB
- bool
+ bool "include bzip2 uncompression support"
config GENERIC_FIND_NEXT_BIT
def_bool n
@@ -18,3 +19,4 @@ config FDT
config OFTREE
select FDT
bool
+endmenu
diff --git a/lib/Makefile b/lib/Makefile
index cb72842585..ae76b4c9a7 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -15,8 +15,8 @@ obj-y += libgen.o
obj-y += stringlist.o
obj-y += recursive_action.o
obj-y += make_directory.o
-obj-$(CONFIG_BZLIB) += bzlib.o bzlib_crctable.o bzlib_decompress.o bzlib_huffman.o bzlib_randtable.o
-obj-$(CONFIG_ZLIB) += zlib.o gunzip.o
+obj-$(CONFIG_BZLIB) += decompress_bunzip2.o
+obj-$(CONFIG_ZLIB) += decompress_inflate.o zlib_inflate/
obj-$(CONFIG_CMDLINE_EDITING) += readline.o
obj-$(CONFIG_SIMPLE_READLINE) += readline_simple.o
obj-$(CONFIG_GLOB) += fnmatch.o
@@ -30,3 +30,4 @@ obj-y += show_progress.o
obj-$(CONFIG_LZO_DECOMPRESS) += decompress_unlzo.o
obj-$(CONFIG_PROCESS_ESCAPE_SEQUENCE) += process_escape_sequence.o
obj-$(CONFIG_FDT) += fdt/
+obj-y += uncompress.o
diff --git a/lib/bzlib.c b/lib/bzlib.c
deleted file mode 100644
index 4c928cadc8..0000000000
--- a/lib/bzlib.c
+++ /dev/null
@@ -1,1592 +0,0 @@
-#include <config.h>
-#include <common.h>
-#include <watchdog.h>
-
-/*
- * This file is a modified version of bzlib.c from the bzip2-1.0.2
- * distribution which can be found at http://sources.redhat.com/bzip2/
- */
-
-/*-------------------------------------------------------------*/
-/*--- Library top-level functions. ---*/
-/*--- bzlib.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- 2. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-/*--
- CHANGES
- ~~~~~~~
- 0.9.0 -- original version.
-
- 0.9.0a/b -- no changes in this file.
-
- 0.9.0c
- * made zero-length BZ_FLUSH work correctly in bzCompress().
- * fixed bzWrite/bzRead to ignore zero-length requests.
- * fixed bzread to correctly handle read requests after EOF.
- * wrong parameter order in call to bzDecompressInit in
- bzBuffToBuffDecompress. Fixed.
---*/
-
-#include "bzlib_private.h"
-
-/*---------------------------------------------------*/
-/*--- Compression stuff ---*/
-/*---------------------------------------------------*/
-
-
-/*---------------------------------------------------*/
-#ifndef BZ_NO_STDIO
-void BZ2_bz__AssertH__fail ( int errcode )
-{
- fprintf(stderr,
- "\n\nbzip2/libbzip2: internal error number %d.\n"
- "This is a bug in bzip2/libbzip2, %s.\n"
- "Please report it to me at: jseward@acm.org. If this happened\n"
- "when you were using some program which uses libbzip2 as a\n"
- "component, you should also report this bug to the author(s)\n"
- "of that program. Please make an effort to report this bug;\n"
- "timely and accurate bug reports eventually lead to higher\n"
- "quality software. Thanks. Julian Seward, 30 December 2001.\n\n",
- errcode,
- BZ2_bzlibVersion()
- );
-
- if (errcode == 1007) {
- fprintf(stderr,
- "\n*** A special note about internal error number 1007 ***\n"
- "\n"
- "Experience suggests that a common cause of i.e. 1007\n"
- "is unreliable memory or other hardware. The 1007 assertion\n"
- "just happens to cross-check the results of huge numbers of\n"
- "memory reads/writes, and so acts (unintendedly) as a stress\n"
- "test of your memory system.\n"
- "\n"
- "I suggest the following: try compressing the file again,\n"
- "possibly monitoring progress in detail with the -vv flag.\n"
- "\n"
- "* If the error cannot be reproduced, and/or happens at different\n"
- " points in compression, you may have a flaky memory system.\n"
- " Try a memory-test program. I have used Memtest86\n"
- " (www.memtest86.com). At the time of writing it is free (GPLd).\n"
- " Memtest86 tests memory much more thorougly than your BIOSs\n"
- " power-on test, and may find failures that the BIOS doesn't.\n"
- "\n"
- "* If the error can be repeatably reproduced, this is a bug in\n"
- " bzip2, and I would very much like to hear about it. Please\n"
- " let me know, and, ideally, save a copy of the file causing the\n"
- " problem -- without which I will be unable to investigate it.\n"
- "\n"
- );
- }
-
- exit(3);
-}
-#endif
-
-
-/*---------------------------------------------------*/
-static
-int bz_config_ok ( void )
-{
- if (sizeof(int) != 4) return 0;
- if (sizeof(short) != 2) return 0;
- if (sizeof(char) != 1) return 0;
- return 1;
-}
-
-
-/*---------------------------------------------------*/
-static
-void* default_bzalloc ( void* opaque, Int32 items, Int32 size )
-{
- void* v = malloc ( items * size );
- return v;
-}
-
-static
-void default_bzfree ( void* opaque, void* addr )
-{
- if (addr != NULL) free ( addr );
-}
-
-#ifndef BZ_NO_COMPRESS
-/*---------------------------------------------------*/
-static
-void prepare_new_block ( EState* s )
-{
- Int32 i;
- s->nblock = 0;
- s->numZ = 0;
- s->state_out_pos = 0;
- BZ_INITIALISE_CRC ( s->blockCRC );
- for (i = 0; i < 256; i++) s->inUse[i] = False;
- s->blockNo++;
-}
-
-
-/*---------------------------------------------------*/
-static
-void init_RL ( EState* s )
-{
- s->state_in_ch = 256;
- s->state_in_len = 0;
-}
-
-
-static
-Bool isempty_RL ( EState* s )
-{
- if (s->state_in_ch < 256 && s->state_in_len > 0)
- return False; else
- return True;
-}
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzCompressInit)
- ( bz_stream* strm,
- int blockSize100k,
- int verbosity,
- int workFactor )
-{
- Int32 n;
- EState* s;
-
- if (!bz_config_ok()) return BZ_CONFIG_ERROR;
-
- if (strm == NULL ||
- blockSize100k < 1 || blockSize100k > 9 ||
- workFactor < 0 || workFactor > 250)
- return BZ_PARAM_ERROR;
-
- if (workFactor == 0) workFactor = 30;
- if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
- if (strm->bzfree == NULL) strm->bzfree = default_bzfree;
-
- s = BZALLOC( sizeof(EState) );
- if (s == NULL) return BZ_MEM_ERROR;
- s->strm = strm;
-
- s->arr1 = NULL;
- s->arr2 = NULL;
- s->ftab = NULL;
-
- n = 100000 * blockSize100k;
- s->arr1 = BZALLOC( n * sizeof(UInt32) );
- s->arr2 = BZALLOC( (n+BZ_N_OVERSHOOT) * sizeof(UInt32) );
- s->ftab = BZALLOC( 65537 * sizeof(UInt32) );
-
- if (s->arr1 == NULL || s->arr2 == NULL || s->ftab == NULL) {
- if (s->arr1 != NULL) BZFREE(s->arr1);
- if (s->arr2 != NULL) BZFREE(s->arr2);
- if (s->ftab != NULL) BZFREE(s->ftab);
- if (s != NULL) BZFREE(s);
- return BZ_MEM_ERROR;
- }
-
- s->blockNo = 0;
- s->state = BZ_S_INPUT;
- s->mode = BZ_M_RUNNING;
- s->combinedCRC = 0;
- s->blockSize100k = blockSize100k;
- s->nblockMAX = 100000 * blockSize100k - 19;
- s->verbosity = verbosity;
- s->workFactor = workFactor;
-
- s->block = (UChar*)s->arr2;
- s->mtfv = (UInt16*)s->arr1;
- s->zbits = NULL;
- s->ptr = (UInt32*)s->arr1;
-
- strm->state = s;
- strm->total_in_lo32 = 0;
- strm->total_in_hi32 = 0;
- strm->total_out_lo32 = 0;
- strm->total_out_hi32 = 0;
- init_RL ( s );
- prepare_new_block ( s );
- return BZ_OK;
-}
-
-
-/*---------------------------------------------------*/
-static
-void add_pair_to_block ( EState* s )
-{
- Int32 i;
- UChar ch = (UChar)(s->state_in_ch);
- for (i = 0; i < s->state_in_len; i++) {
- BZ_UPDATE_CRC( s->blockCRC, ch );
- }
- s->inUse[s->state_in_ch] = True;
- switch (s->state_in_len) {
- case 1:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- case 2:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- case 3:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- default:
- s->inUse[s->state_in_len-4] = True;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = ((UChar)(s->state_in_len-4));
- s->nblock++;
- break;
- }
-}
-
-
-/*---------------------------------------------------*/
-static
-void flush_RL ( EState* s )
-{
- if (s->state_in_ch < 256) add_pair_to_block ( s );
- init_RL ( s );
-}
-
-
-/*---------------------------------------------------*/
-#define ADD_CHAR_TO_BLOCK(zs,zchh0) \
-{ \
- UInt32 zchh = (UInt32)(zchh0); \
- /*-- fast track the common case --*/ \
- if (zchh != zs->state_in_ch && \
- zs->state_in_len == 1) { \
- UChar ch = (UChar)(zs->state_in_ch); \
- BZ_UPDATE_CRC( zs->blockCRC, ch ); \
- zs->inUse[zs->state_in_ch] = True; \
- zs->block[zs->nblock] = (UChar)ch; \
- zs->nblock++; \
- zs->state_in_ch = zchh; \
- } \
- else \
- /*-- general, uncommon cases --*/ \
- if (zchh != zs->state_in_ch || \
- zs->state_in_len == 255) { \
- if (zs->state_in_ch < 256) \
- add_pair_to_block ( zs ); \
- zs->state_in_ch = zchh; \
- zs->state_in_len = 1; \
- } else { \
- zs->state_in_len++; \
- } \
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool copy_input_until_stop ( EState* s )
-{
- Bool progress_in = False;
-
- if (s->mode == BZ_M_RUNNING) {
-
- /*-- fast track the common case --*/
- while (True) {
- /*-- block full? --*/
- if (s->nblock >= s->nblockMAX) break;
- /*-- no input? --*/
- if (s->strm->avail_in == 0) break;
- progress_in = True;
- ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
- s->strm->next_in++;
- s->strm->avail_in--;
- s->strm->total_in_lo32++;
- if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
- }
-
- } else {
-
- /*-- general, uncommon case --*/
- while (True) {
- /*-- block full? --*/
- if (s->nblock >= s->nblockMAX) break;
- /*-- no input? --*/
- if (s->strm->avail_in == 0) break;
- /*-- flush/finish end? --*/
- if (s->avail_in_expect == 0) break;
- progress_in = True;
- ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
- s->strm->next_in++;
- s->strm->avail_in--;
- s->strm->total_in_lo32++;
- if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
- s->avail_in_expect--;
- }
- }
- return progress_in;
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool copy_output_until_stop ( EState* s )
-{
- Bool progress_out = False;
-
- while (True) {
-
- /*-- no output space? --*/
- if (s->strm->avail_out == 0) break;
-
- /*-- block done? --*/
- if (s->state_out_pos >= s->numZ) break;
-
- progress_out = True;
- *(s->strm->next_out) = s->zbits[s->state_out_pos];
- s->state_out_pos++;
- s->strm->avail_out--;
- s->strm->next_out++;
- s->strm->total_out_lo32++;
- if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
- }
-
- return progress_out;
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool handle_compress ( bz_stream* strm )
-{
- Bool progress_in = False;
- Bool progress_out = False;
- EState* s = strm->state;
-
- while (True) {
-
- if (s->state == BZ_S_OUTPUT) {
- progress_out |= copy_output_until_stop ( s );
- if (s->state_out_pos < s->numZ) break;
- if (s->mode == BZ_M_FINISHING &&
- s->avail_in_expect == 0 &&
- isempty_RL(s)) break;
- prepare_new_block ( s );
- s->state = BZ_S_INPUT;
- if (s->mode == BZ_M_FLUSHING &&
- s->avail_in_expect == 0 &&
- isempty_RL(s)) break;
- }
-
- if (s->state == BZ_S_INPUT) {
- progress_in |= copy_input_until_stop ( s );
- if (s->mode != BZ_M_RUNNING && s->avail_in_expect == 0) {
- flush_RL ( s );
- BZ2_compressBlock ( s, (Bool)(s->mode == BZ_M_FINISHING) );
- s->state = BZ_S_OUTPUT;
- }
- else
- if (s->nblock >= s->nblockMAX) {
- BZ2_compressBlock ( s, False );
- s->state = BZ_S_OUTPUT;
- }
- else
- if (s->strm->avail_in == 0) {
- break;
- }
- }
-
- }
-
- return progress_in || progress_out;
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzCompress) ( bz_stream *strm, int action )
-{
- Bool progress;
- EState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- preswitch:
- switch (s->mode) {
-
- case BZ_M_IDLE:
- return BZ_SEQUENCE_ERROR;
-
- case BZ_M_RUNNING:
- if (action == BZ_RUN) {
- progress = handle_compress ( strm );
- return progress ? BZ_RUN_OK : BZ_PARAM_ERROR;
- }
- else
- if (action == BZ_FLUSH) {
- s->avail_in_expect = strm->avail_in;
- s->mode = BZ_M_FLUSHING;
- goto preswitch;
- }
- else
- if (action == BZ_FINISH) {
- s->avail_in_expect = strm->avail_in;
- s->mode = BZ_M_FINISHING;
- goto preswitch;
- }
- else
- return BZ_PARAM_ERROR;
-
- case BZ_M_FLUSHING:
- if (action != BZ_FLUSH) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect != s->strm->avail_in)
- return BZ_SEQUENCE_ERROR;
- progress = handle_compress ( strm );
- if (s->avail_in_expect > 0 || !isempty_RL(s) ||
- s->state_out_pos < s->numZ) return BZ_FLUSH_OK;
- s->mode = BZ_M_RUNNING;
- return BZ_RUN_OK;
-
- case BZ_M_FINISHING:
- if (action != BZ_FINISH) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect != s->strm->avail_in)
- return BZ_SEQUENCE_ERROR;
- progress = handle_compress ( strm );
- if (!progress) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect > 0 || !isempty_RL(s) ||
- s->state_out_pos < s->numZ) return BZ_FINISH_OK;
- s->mode = BZ_M_IDLE;
- return BZ_STREAM_END;
- }
- return BZ_OK; /*--not reached--*/
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzCompressEnd) ( bz_stream *strm )
-{
- EState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- if (s->arr1 != NULL) BZFREE(s->arr1);
- if (s->arr2 != NULL) BZFREE(s->arr2);
- if (s->ftab != NULL) BZFREE(s->ftab);
- BZFREE(strm->state);
-
- strm->state = NULL;
-
- return BZ_OK;
-}
-#endif /* BZ_NO_COMPRESS */
-
-/*---------------------------------------------------*/
-/*--- Decompression stuff ---*/
-/*---------------------------------------------------*/
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzDecompressInit)
- ( bz_stream* strm,
- int verbosity,
- int small )
-{
- DState* s;
-
- if (!bz_config_ok()) return BZ_CONFIG_ERROR;
-
- if (strm == NULL) return BZ_PARAM_ERROR;
- if (small != 0 && small != 1) return BZ_PARAM_ERROR;
- if (verbosity < 0 || verbosity > 4) return BZ_PARAM_ERROR;
-
- if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
- if (strm->bzfree == NULL) strm->bzfree = default_bzfree;
-
- s = BZALLOC( sizeof(DState) );
- if (s == NULL) return BZ_MEM_ERROR;
- s->strm = strm;
- strm->state = s;
- s->state = BZ_X_MAGIC_1;
- s->bsLive = 0;
- s->bsBuff = 0;
- s->calculatedCombinedCRC = 0;
- strm->total_in_lo32 = 0;
- strm->total_in_hi32 = 0;
- strm->total_out_lo32 = 0;
- strm->total_out_hi32 = 0;
- s->smallDecompress = (Bool)small;
- s->ll4 = NULL;
- s->ll16 = NULL;
- s->tt = NULL;
- s->currBlockNo = 0;
- s->verbosity = verbosity;
-
- return BZ_OK;
-}
-
-
-/*---------------------------------------------------*/
-static
-void unRLE_obuf_to_output_FAST ( DState* s )
-{
- UChar k1;
-
- if (s->blockRandomised) {
-
- while (True) {
- /* try to finish existing run */
- while (True) {
- if (s->strm->avail_out == 0) return;
- if (s->state_out_len == 0) break;
- *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
- BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
- s->state_out_len--;
- s->strm->next_out++;
- s->strm->avail_out--;
- s->strm->total_out_lo32++;
- if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
- }
-
- /* can a new run be started? */
- if (s->nblock_used == s->save_nblock+1) return;
-
-
- s->state_out_len = 1;
- s->state_out_ch = s->k0;
- BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 2;
- BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 3;
- BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- s->state_out_len = ((Int32)k1) + 4;
- BZ_GET_FAST(s->k0); BZ_RAND_UPD_MASK;
- s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
- }
-
- } else {
-
- /* restore */
- UInt32 c_calculatedBlockCRC = s->calculatedBlockCRC;
- UChar c_state_out_ch = s->state_out_ch;
- Int32 c_state_out_len = s->state_out_len;
- Int32 c_nblock_used = s->nblock_used;
- Int32 c_k0 = s->k0;
- UInt32* c_tt = s->tt;
- UInt32 c_tPos = s->tPos;
- char* cs_next_out = s->strm->next_out;
- unsigned int cs_avail_out = s->strm->avail_out;
- /* end restore */
-
- UInt32 avail_out_INIT = cs_avail_out;
- Int32 s_save_nblockPP = s->save_nblock+1;
- unsigned int total_out_lo32_old;
-
- while (True) {
-
- /* try to finish existing run */
- if (c_state_out_len > 0) {
- while (True) {
- if (cs_avail_out == 0) goto return_notr;
- if (c_state_out_len == 1) break;
- *( (UChar*)(cs_next_out) ) = c_state_out_ch;
- BZ_UPDATE_CRC ( c_calculatedBlockCRC, c_state_out_ch );
- c_state_out_len--;
- cs_next_out++;
- cs_avail_out--;
- }
- s_state_out_len_eq_one:
- {
- if (cs_avail_out == 0) {
- c_state_out_len = 1; goto return_notr;
- };
- *( (UChar*)(cs_next_out) ) = c_state_out_ch;
- BZ_UPDATE_CRC ( c_calculatedBlockCRC, c_state_out_ch );
- cs_next_out++;
- cs_avail_out--;
- }
- }
- /* can a new run be started? */
- if (c_nblock_used == s_save_nblockPP) {
- c_state_out_len = 0; goto return_notr;
- };
- c_state_out_ch = c_k0;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (k1 != c_k0) {
- c_k0 = k1; goto s_state_out_len_eq_one;
- };
- if (c_nblock_used == s_save_nblockPP)
- goto s_state_out_len_eq_one;
-
- c_state_out_len = 2;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (c_nblock_used == s_save_nblockPP) continue;
- if (k1 != c_k0) { c_k0 = k1; continue; };
-
- c_state_out_len = 3;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (c_nblock_used == s_save_nblockPP) continue;
- if (k1 != c_k0) { c_k0 = k1; continue; };
-
- BZ_GET_FAST_C(k1); c_nblock_used++;
- c_state_out_len = ((Int32)k1) + 4;
- BZ_GET_FAST_C(c_k0); c_nblock_used++;
- }
-
- return_notr:
- total_out_lo32_old = s->strm->total_out_lo32;
- s->strm->total_out_lo32 += (avail_out_INIT - cs_avail_out);
- if (s->strm->total_out_lo32 < total_out_lo32_old)
- s->strm->total_out_hi32++;
-
- /* save */
- s->calculatedBlockCRC = c_calculatedBlockCRC;
- s->state_out_ch = c_state_out_ch;
- s->state_out_len = c_state_out_len;
- s->nblock_used = c_nblock_used;
- s->k0 = c_k0;
- s->tt = c_tt;
- s->tPos = c_tPos;
- s->strm->next_out = cs_next_out;
- s->strm->avail_out = cs_avail_out;
- /* end save */
- }
-}
-
-
-/*---------------------------------------------------*/
-__inline__ Int32 BZ2_indexIntoF ( Int32 indx, Int32 *cftab )
-{
- Int32 nb, na, mid;
- nb = 0;
- na = 256;
- do {
- mid = (nb + na) >> 1;
- if (indx >= cftab[mid]) nb = mid; else na = mid;
- }
- while (na - nb != 1);
- return nb;
-}
-
-
-/*---------------------------------------------------*/
-static
-void unRLE_obuf_to_output_SMALL ( DState* s )
-{
- UChar k1;
-
- if (s->blockRandomised) {
-
- while (True) {
- /* try to finish existing run */
- while (True) {
- if (s->strm->avail_out == 0) return;
- if (s->state_out_len == 0) break;
- *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
- BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
- s->state_out_len--;
- s->strm->next_out++;
- s->strm->avail_out--;
- s->strm->total_out_lo32++;
- if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
- }
-
- /* can a new run be started? */
- if (s->nblock_used == s->save_nblock+1) return;
-
-
- s->state_out_len = 1;
- s->state_out_ch = s->k0;
- BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 2;
- BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 3;
- BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
- k1 ^= BZ_RAND_MASK; s->nblock_used++;
- s->state_out_len = ((Int32)k1) + 4;
- BZ_GET_SMALL(s->k0); BZ_RAND_UPD_MASK;
- s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
- }
-
- } else {
-
- while (True) {
- /* try to finish existing run */
- while (True) {
- if (s->strm->avail_out == 0) return;
- if (s->state_out_len == 0) break;
- *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
- BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
- s->state_out_len--;
- s->strm->next_out++;
- s->strm->avail_out--;
- s->strm->total_out_lo32++;
- if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
- }
-
- /* can a new run be started? */
- if (s->nblock_used == s->save_nblock+1) return;
-
- s->state_out_len = 1;
- s->state_out_ch = s->k0;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 2;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 3;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save_nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- BZ_GET_SMALL(k1); s->nblock_used++;
- s->state_out_len = ((Int32)k1) + 4;
- BZ_GET_SMALL(s->k0); s->nblock_used++;
- }
-
- }
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzDecompress) ( bz_stream *strm )
-{
- DState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- while (True) {
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- WATCHDOG_RESET();
-#endif
- if (s->state == BZ_X_IDLE) return BZ_SEQUENCE_ERROR;
- if (s->state == BZ_X_OUTPUT) {
- if (s->smallDecompress)
- unRLE_obuf_to_output_SMALL ( s ); else
- unRLE_obuf_to_output_FAST ( s );
- if (s->nblock_used == s->save_nblock+1 && s->state_out_len == 0) {
- BZ_FINALISE_CRC ( s->calculatedBlockCRC );
- if (s->verbosity >= 3)
- VPrintf2 ( " {0x%x, 0x%x}", s->storedBlockCRC,
- s->calculatedBlockCRC );
- if (s->verbosity >= 2) VPrintf0 ( "]" );
- if (s->calculatedBlockCRC != s->storedBlockCRC)
- return BZ_DATA_ERROR;
- s->calculatedCombinedCRC
- = (s->calculatedCombinedCRC << 1) |
- (s->calculatedCombinedCRC >> 31);
- s->calculatedCombinedCRC ^= s->calculatedBlockCRC;
- s->state = BZ_X_BLKHDR_1;
- } else {
- return BZ_OK;
- }
- }
- if (s->state >= BZ_X_MAGIC_1) {
- Int32 r = BZ2_decompress ( s );
- if (r == BZ_STREAM_END) {
- if (s->verbosity >= 3)
- VPrintf2 ( "\n combined CRCs: stored = 0x%x, computed = 0x%x",
- s->storedCombinedCRC, s->calculatedCombinedCRC );
- if (s->calculatedCombinedCRC != s->storedCombinedCRC)
- return BZ_DATA_ERROR;
- return r;
- }
- if (s->state != BZ_X_OUTPUT) return r;
- }
- }
-
- AssertH ( 0, 6001 );
-
- return 0; /*NOTREACHED*/
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzDecompressEnd) ( bz_stream *strm )
-{
- DState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- if (s->tt != NULL) BZFREE(s->tt);
- if (s->ll16 != NULL) BZFREE(s->ll16);
- if (s->ll4 != NULL) BZFREE(s->ll4);
-
- BZFREE(strm->state);
- strm->state = NULL;
-
- return BZ_OK;
-}
-
-
-#ifndef BZ_NO_STDIO
-/*---------------------------------------------------*/
-/*--- File I/O stuff ---*/
-/*---------------------------------------------------*/
-
-#define BZ_SETERR(eee) \
-{ \
- if (bzerror != NULL) *bzerror = eee; \
- if (bzf != NULL) bzf->lastErr = eee; \
-}
-
-typedef
- struct {
- FILE* handle;
- Char buf[BZ_MAX_UNUSED];
- Int32 bufN;
- Bool writing;
- bz_stream strm;
- Int32 lastErr;
- Bool initialisedOk;
- }
- bzFile;
-
-
-/*---------------------------------------------*/
-static Bool myfeof ( FILE* f )
-{
- Int32 c = fgetc ( f );
- if (c == EOF) return True;
- ungetc ( c, f );
- return False;
-}
-
-
-/*---------------------------------------------------*/
-BZFILE* BZ_API(BZ2_bzWriteOpen)
- ( int* bzerror,
- FILE* f,
- int blockSize100k,
- int verbosity,
- int workFactor )
-{
- Int32 ret;
- bzFile* bzf = NULL;
-
- BZ_SETERR(BZ_OK);
-
- if (f == NULL ||
- (blockSize100k < 1 || blockSize100k > 9) ||
- (workFactor < 0 || workFactor > 250) ||
- (verbosity < 0 || verbosity > 4))
- { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };
-
- if (ferror(f))
- { BZ_SETERR(BZ_IO_ERROR); return NULL; };
-
- bzf = malloc ( sizeof(bzFile) );
- if (bzf == NULL)
- { BZ_SETERR(BZ_MEM_ERROR); return NULL; };
-
- BZ_SETERR(BZ_OK);
- bzf->initialisedOk = False;
- bzf->bufN = 0;
- bzf->handle = f;
- bzf->writing = True;
- bzf->strm.bzalloc = NULL;
- bzf->strm.bzfree = NULL;
- bzf->strm.opaque = NULL;
-
- if (workFactor == 0) workFactor = 30;
- ret = BZ2_bzCompressInit ( &(bzf->strm), blockSize100k,
- verbosity, workFactor );
- if (ret != BZ_OK)
- { BZ_SETERR(ret); free(bzf); return NULL; };
-
- bzf->strm.avail_in = 0;
- bzf->initialisedOk = True;
- return bzf;
-}
-
-
-/*---------------------------------------------------*/
-void BZ_API(BZ2_bzWrite)
- ( int* bzerror,
- BZFILE* b,
- void* buf,
- int len )
-{
- Int32 n, n2, ret;
- bzFile* bzf = (bzFile*)b;
-
- BZ_SETERR(BZ_OK);
- if (bzf == NULL || buf == NULL || len < 0)
- { BZ_SETERR(BZ_PARAM_ERROR); return; };
- if (!(bzf->writing))
- { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
- if (ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return; };
-
- if (len == 0)
- { BZ_SETERR(BZ_OK); return; };
-
- bzf->strm.avail_in = len;
- bzf->strm.next_in = buf;
-
- while (True) {
- bzf->strm.avail_out = BZ_MAX_UNUSED;
- bzf->strm.next_out = bzf->buf;
- ret = BZ2_bzCompress ( &(bzf->strm), BZ_RUN );
- if (ret != BZ_RUN_OK)
- { BZ_SETERR(ret); return; };
-
- if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
- n = BZ_MAX_UNUSED - bzf->strm.avail_out;
- n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar),
- n, bzf->handle );
- if (n != n2 || ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return; };
- }
-
- if (bzf->strm.avail_in == 0)
- { BZ_SETERR(BZ_OK); return; };
- }
-}
-
-
-/*---------------------------------------------------*/
-void BZ_API(BZ2_bzWriteClose)
- ( int* bzerror,
- BZFILE* b,
- int abandon,
- unsigned int* nbytes_in,
- unsigned int* nbytes_out )
-{
- BZ2_bzWriteClose64 ( bzerror, b, abandon,
- nbytes_in, NULL, nbytes_out, NULL );
-}
-
-
-void BZ_API(BZ2_bzWriteClose64)
- ( int* bzerror,
- BZFILE* b,
- int abandon,
- unsigned int* nbytes_in_lo32,
- unsigned int* nbytes_in_hi32,
- unsigned int* nbytes_out_lo32,
- unsigned int* nbytes_out_hi32 )
-{
- Int32 n, n2, ret;
- bzFile* bzf = (bzFile*)b;
-
- if (bzf == NULL)
- { BZ_SETERR(BZ_OK); return; };
- if (!(bzf->writing))
- { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
- if (ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return; };
-
- if (nbytes_in_lo32 != NULL) *nbytes_in_lo32 = 0;
- if (nbytes_in_hi32 != NULL) *nbytes_in_hi32 = 0;
- if (nbytes_out_lo32 != NULL) *nbytes_out_lo32 = 0;
- if (nbytes_out_hi32 != NULL) *nbytes_out_hi32 = 0;
-
- if ((!abandon) && bzf->lastErr == BZ_OK) {
- while (True) {
- bzf->strm.avail_out = BZ_MAX_UNUSED;
- bzf->strm.next_out = bzf->buf;
- ret = BZ2_bzCompress ( &(bzf->strm), BZ_FINISH );
- if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
- { BZ_SETERR(ret); return; };
-
- if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
- n = BZ_MAX_UNUSED - bzf->strm.avail_out;
- n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar),
- n, bzf->handle );
- if (n != n2 || ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return; };
- }
-
- if (ret == BZ_STREAM_END) break;
- }
- }
-
- if ( !abandon && !ferror ( bzf->handle ) ) {
- fflush ( bzf->handle );
- if (ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return; };
- }
-
- if (nbytes_in_lo32 != NULL)
- *nbytes_in_lo32 = bzf->strm.total_in_lo32;
- if (nbytes_in_hi32 != NULL)
- *nbytes_in_hi32 = bzf->strm.total_in_hi32;
- if (nbytes_out_lo32 != NULL)
- *nbytes_out_lo32 = bzf->strm.total_out_lo32;
- if (nbytes_out_hi32 != NULL)
- *nbytes_out_hi32 = bzf->strm.total_out_hi32;
-
- BZ_SETERR(BZ_OK);
- BZ2_bzCompressEnd ( &(bzf->strm) );
- free ( bzf );
-}
-
-
-/*---------------------------------------------------*/
-BZFILE* BZ_API(BZ2_bzReadOpen)
- ( int* bzerror,
- FILE* f,
- int verbosity,
- int small,
- void* unused,
- int nUnused )
-{
- bzFile* bzf = NULL;
- int ret;
-
- BZ_SETERR(BZ_OK);
-
- if (f == NULL ||
- (small != 0 && small != 1) ||
- (verbosity < 0 || verbosity > 4) ||
- (unused == NULL && nUnused != 0) ||
- (unused != NULL && (nUnused < 0 || nUnused > BZ_MAX_UNUSED)))
- { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };
-
- if (ferror(f))
- { BZ_SETERR(BZ_IO_ERROR); return NULL; };
-
- bzf = malloc ( sizeof(bzFile) );
- if (bzf == NULL)
- { BZ_SETERR(BZ_MEM_ERROR); return NULL; };
-
- BZ_SETERR(BZ_OK);
-
- bzf->initialisedOk = False;
- bzf->handle = f;
- bzf->bufN = 0;
- bzf->writing = False;
- bzf->strm.bzalloc = NULL;
- bzf->strm.bzfree = NULL;
- bzf->strm.opaque = NULL;
-
- while (nUnused > 0) {
- bzf->buf[bzf->bufN] = *((UChar*)(unused)); bzf->bufN++;
- unused = ((void*)( 1 + ((UChar*)(unused)) ));
- nUnused--;
- }
-
- ret = BZ2_bzDecompressInit ( &(bzf->strm), verbosity, small );
- if (ret != BZ_OK)
- { BZ_SETERR(ret); free(bzf); return NULL; };
-
- bzf->strm.avail_in = bzf->bufN;
- bzf->strm.next_in = bzf->buf;
-
- bzf->initialisedOk = True;
- return bzf;
-}
-
-
-/*---------------------------------------------------*/
-void BZ_API(BZ2_bzReadClose) ( int *bzerror, BZFILE *b )
-{
- bzFile* bzf = (bzFile*)b;
-
- BZ_SETERR(BZ_OK);
- if (bzf == NULL)
- { BZ_SETERR(BZ_OK); return; };
-
- if (bzf->writing)
- { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
-
- if (bzf->initialisedOk)
- (void)BZ2_bzDecompressEnd ( &(bzf->strm) );
- free ( bzf );
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzRead)
- ( int* bzerror,
- BZFILE* b,
- void* buf,
- int len )
-{
- Int32 n, ret;
- bzFile* bzf = (bzFile*)b;
-
- BZ_SETERR(BZ_OK);
-
- if (bzf == NULL || buf == NULL || len < 0)
- { BZ_SETERR(BZ_PARAM_ERROR); return 0; };
-
- if (bzf->writing)
- { BZ_SETERR(BZ_SEQUENCE_ERROR); return 0; };
-
- if (len == 0)
- { BZ_SETERR(BZ_OK); return 0; };
-
- bzf->strm.avail_out = len;
- bzf->strm.next_out = buf;
-
- while (True) {
-
- if (ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return 0; };
-
- if (bzf->strm.avail_in == 0 && !myfeof(bzf->handle)) {
- n = fread ( bzf->buf, sizeof(UChar),
- BZ_MAX_UNUSED, bzf->handle );
- if (ferror(bzf->handle))
- { BZ_SETERR(BZ_IO_ERROR); return 0; };
- bzf->bufN = n;
- bzf->strm.avail_in = bzf->bufN;
- bzf->strm.next_in = bzf->buf;
- }
-
- ret = BZ2_bzDecompress ( &(bzf->strm) );
-
- if (ret != BZ_OK && ret != BZ_STREAM_END)
- { BZ_SETERR(ret); return 0; };
-
- if (ret == BZ_OK && myfeof(bzf->handle) &&
- bzf->strm.avail_in == 0 && bzf->strm.avail_out > 0)
- { BZ_SETERR(BZ_UNEXPECTED_EOF); return 0; };
-
- if (ret == BZ_STREAM_END)
- { BZ_SETERR(BZ_STREAM_END);
- return len - bzf->strm.avail_out; };
- if (bzf->strm.avail_out == 0)
- { BZ_SETERR(BZ_OK); return len; };
-
- }
-
- return 0; /*not reached*/
-}
-
-
-/*---------------------------------------------------*/
-void BZ_API(BZ2_bzReadGetUnused)
- ( int* bzerror,
- BZFILE* b,
- void** unused,
- int* nUnused )
-{
- bzFile* bzf = (bzFile*)b;
- if (bzf == NULL)
- { BZ_SETERR(BZ_PARAM_ERROR); return; };
- if (bzf->lastErr != BZ_STREAM_END)
- { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
- if (unused == NULL || nUnused == NULL)
- { BZ_SETERR(BZ_PARAM_ERROR); return; };
-
- BZ_SETERR(BZ_OK);
- *nUnused = bzf->strm.avail_in;
- *unused = bzf->strm.next_in;
-}
-#endif
-
-
-/*---------------------------------------------------*/
-/*--- Misc convenience stuff ---*/
-/*---------------------------------------------------*/
-#ifndef BZ_NO_COMPRESS
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzBuffToBuffCompress)
- ( char* dest,
- unsigned int* destLen,
- char* source,
- unsigned int sourceLen,
- int blockSize100k,
- int verbosity,
- int workFactor )
-{
- bz_stream strm;
- int ret;
-
- if (dest == NULL || destLen == NULL ||
- source == NULL ||
- blockSize100k < 1 || blockSize100k > 9 ||
- verbosity < 0 || verbosity > 4 ||
- workFactor < 0 || workFactor > 250)
- return BZ_PARAM_ERROR;
-
- if (workFactor == 0) workFactor = 30;
- strm.bzalloc = NULL;
- strm.bzfree = NULL;
- strm.opaque = NULL;
- ret = BZ2_bzCompressInit ( &strm, blockSize100k,
- verbosity, workFactor );
- if (ret != BZ_OK) return ret;
-
- strm.next_in = source;
- strm.next_out = dest;
- strm.avail_in = sourceLen;
- strm.avail_out = *destLen;
-
- ret = BZ2_bzCompress ( &strm, BZ_FINISH );
- if (ret == BZ_FINISH_OK) goto output_overflow;
- if (ret != BZ_STREAM_END) goto errhandler;
-
- /* normal termination */
- *destLen -= strm.avail_out;
- BZ2_bzCompressEnd ( &strm );
- return BZ_OK;
-
- output_overflow:
- BZ2_bzCompressEnd ( &strm );
- return BZ_OUTBUFF_FULL;
-
- errhandler:
- BZ2_bzCompressEnd ( &strm );
- return ret;
-}
-#endif /* BZ_NO_COMPRESS */
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzBuffToBuffDecompress)
- ( char* dest,
- unsigned int* destLen,
- char* source,
- unsigned int sourceLen,
- int small,
- int verbosity )
-{
- bz_stream strm;
- int ret;
-
- if (destLen == NULL || source == NULL)
- return BZ_PARAM_ERROR;
-
- strm.bzalloc = NULL;
- strm.bzfree = NULL;
- strm.opaque = NULL;
- ret = BZ2_bzDecompressInit ( &strm, verbosity, small );
- if (ret != BZ_OK) return ret;
-
- strm.next_in = source;
- strm.next_out = dest;
- strm.avail_in = sourceLen;
- strm.avail_out = *destLen;
-
- ret = BZ2_bzDecompress ( &strm );
- if (ret == BZ_OK) goto output_overflow_or_eof;
- if (ret != BZ_STREAM_END) goto errhandler;
-
- /* normal termination */
- *destLen -= strm.avail_out;
- BZ2_bzDecompressEnd ( &strm );
- return BZ_OK;
-
- output_overflow_or_eof:
- if (strm.avail_out > 0) {
- BZ2_bzDecompressEnd ( &strm );
- return BZ_UNEXPECTED_EOF;
- } else {
- BZ2_bzDecompressEnd ( &strm );
- return BZ_OUTBUFF_FULL;
- };
-
- errhandler:
- BZ2_bzDecompressEnd ( &strm );
- return ret;
-}
-
-
-/*---------------------------------------------------*/
-/*--
- Code contributed by Yoshioka Tsuneo
- (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
- to support better zlib compatibility.
- This code is not _officially_ part of libbzip2 (yet);
- I haven't tested it, documented it, or considered the
- threading-safeness of it.
- If this code breaks, please contact both Yoshioka and me.
---*/
-/*---------------------------------------------------*/
-
-/*---------------------------------------------------*/
-/*--
- return version like "0.9.0c".
---*/
-const char * BZ_API(BZ2_bzlibVersion)(void)
-{
- return BZ_VERSION;
-}
-
-
-#ifndef BZ_NO_STDIO
-/*---------------------------------------------------*/
-
-#if defined(_WIN32) || defined(OS2) || defined(MSDOS)
-# include <fcntl.h>
-# include <io.h>
-# define SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY)
-#else
-# define SET_BINARY_MODE(file)
-#endif
-static
-BZFILE * bzopen_or_bzdopen
- ( const char *path, /* no use when bzdopen */
- int fd, /* no use when bzdopen */
- const char *mode,
- int open_mode) /* bzopen: 0, bzdopen:1 */
-{
- int bzerr;
- char unused[BZ_MAX_UNUSED];
- int blockSize100k = 9;
- int writing = 0;
- char mode2[10] = "";
- FILE *fp = NULL;
- BZFILE *bzfp = NULL;
- int verbosity = 0;
- int workFactor = 30;
- int smallMode = 0;
- int nUnused = 0;
-
- if (mode == NULL) return NULL;
- while (*mode) {
- switch (*mode) {
- case 'r':
- writing = 0; break;
- case 'w':
- writing = 1; break;
- case 's':
- smallMode = 1; break;
- default:
- if (isdigit((int)(*mode))) {
- blockSize100k = *mode-BZ_HDR_0;
- }
- }
- mode++;
- }
- strcat(mode2, writing ? "w" : "r" );
- strcat(mode2,"b"); /* binary mode */
-
- if (open_mode==0) {
- if (path==NULL || strcmp(path,"")==0) {
- fp = (writing ? stdout : stdin);
- SET_BINARY_MODE(fp);
- } else {
- fp = fopen(path,mode2);
- }
- } else {
-#ifdef BZ_STRICT_ANSI
- fp = NULL;
-#else
- fp = fdopen(fd,mode2);
-#endif
- }
- if (fp == NULL) return NULL;
-
- if (writing) {
- /* Guard against total chaos and anarchy -- JRS */
- if (blockSize100k < 1) blockSize100k = 1;
- if (blockSize100k > 9) blockSize100k = 9;
- bzfp = BZ2_bzWriteOpen(&bzerr,fp,blockSize100k,
- verbosity,workFactor);
- } else {
- bzfp = BZ2_bzReadOpen(&bzerr,fp,verbosity,smallMode,
- unused,nUnused);
- }
- if (bzfp == NULL) {
- if (fp != stdin && fp != stdout) fclose(fp);
- return NULL;
- }
- return bzfp;
-}
-
-
-/*---------------------------------------------------*/
-/*--
- open file for read or write.
- ex) bzopen("file","w9")
- case path="" or NULL => use stdin or stdout.
---*/
-BZFILE * BZ_API(BZ2_bzopen)
- ( const char *path,
- const char *mode )
-{
- return bzopen_or_bzdopen(path,-1,mode,/*bzopen*/0);
-}
-
-
-/*---------------------------------------------------*/
-BZFILE * BZ_API(BZ2_bzdopen)
- ( int fd,
- const char *mode )
-{
- return bzopen_or_bzdopen(NULL,fd,mode,/*bzdopen*/1);
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzread) (BZFILE* b, void* buf, int len )
-{
- int bzerr, nread;
- if (((bzFile*)b)->lastErr == BZ_STREAM_END) return 0;
- nread = BZ2_bzRead(&bzerr,b,buf,len);
- if (bzerr == BZ_OK || bzerr == BZ_STREAM_END) {
- return nread;
- } else {
- return -1;
- }
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzwrite) (BZFILE* b, void* buf, int len )
-{
- int bzerr;
-
- BZ2_bzWrite(&bzerr,b,buf,len);
- if(bzerr == BZ_OK){
- return len;
- }else{
- return -1;
- }
-}
-
-
-/*---------------------------------------------------*/
-int BZ_API(BZ2_bzflush) (BZFILE *b)
-{
- /* do nothing now... */
- return 0;
-}
-
-
-/*---------------------------------------------------*/
-void BZ_API(BZ2_bzclose) (BZFILE* b)
-{
- int bzerr;
- FILE *fp = ((bzFile *)b)->handle;
-
- if (b==NULL) {return;}
- if(((bzFile*)b)->writing){
- BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL);
- if(bzerr != BZ_OK){
- BZ2_bzWriteClose(NULL,b,1,NULL,NULL);
- }
- }else{
- BZ2_bzReadClose(&bzerr,b);
- }
- if(fp!=stdin && fp!=stdout){
- fclose(fp);
- }
-}
-
-
-/*---------------------------------------------------*/
-/*--
- return last error code
---*/
-static char *bzerrorstrings[] = {
- "OK"
- ,"SEQUENCE_ERROR"
- ,"PARAM_ERROR"
- ,"MEM_ERROR"
- ,"DATA_ERROR"
- ,"DATA_ERROR_MAGIC"
- ,"IO_ERROR"
- ,"UNEXPECTED_EOF"
- ,"OUTBUFF_FULL"
- ,"CONFIG_ERROR"
- ,"???" /* for future */
- ,"???" /* for future */
- ,"???" /* for future */
- ,"???" /* for future */
- ,"???" /* for future */
- ,"???" /* for future */
-};
-
-
-const char * BZ_API(BZ2_bzerror) (BZFILE *b, int *errnum)
-{
- int err = ((bzFile *)b)->lastErr;
-
- if(err>0) err = 0;
- *errnum = err;
- return bzerrorstrings[err*-1];
-}
-#endif
diff --git a/lib/bzlib_crctable.c b/lib/bzlib_crctable.c
deleted file mode 100644
index 325b96643e..0000000000
--- a/lib/bzlib_crctable.c
+++ /dev/null
@@ -1,145 +0,0 @@
-#include <config.h>
-
-/*-------------------------------------------------------------*/
-/*--- Table for doing CRCs ---*/
-/*--- crctable.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- 2. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-#include "bzlib_private.h"
-
-/*--
- I think this is an implementation of the AUTODIN-II,
- Ethernet & FDDI 32-bit CRC standard. Vaguely derived
- from code by Rob Warnock, in Section 51 of the
- comp.compression FAQ.
---*/
-
-UInt32 BZ2_crc32Table[256] = {
-
- /*-- Ugly, innit? --*/
-
- 0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
- 0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
- 0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
- 0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
- 0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
- 0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
- 0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
- 0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
- 0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
- 0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
- 0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
- 0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
- 0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
- 0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
- 0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
- 0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
- 0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
- 0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
- 0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
- 0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
- 0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
- 0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
- 0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
- 0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
- 0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
- 0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
- 0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
- 0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
- 0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
- 0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
- 0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
- 0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
- 0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
- 0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
- 0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
- 0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
- 0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
- 0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
- 0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
- 0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
- 0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
- 0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
- 0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
- 0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
- 0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
- 0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
- 0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
- 0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
- 0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
- 0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
- 0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
- 0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
- 0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
- 0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
- 0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
- 0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
- 0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
- 0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
- 0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
- 0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
- 0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
- 0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
- 0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
- 0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
-};
-
-
-/*-------------------------------------------------------------*/
-/*--- end crctable.c ---*/
-/*-------------------------------------------------------------*/
diff --git a/lib/bzlib_decompress.c b/lib/bzlib_decompress.c
deleted file mode 100644
index 4412b8a23e..0000000000
--- a/lib/bzlib_decompress.c
+++ /dev/null
@@ -1,674 +0,0 @@
-#include <config.h>
-#include <common.h>
-#include <watchdog.h>
-
-/*-------------------------------------------------------------*/
-/*--- Decompression machinery ---*/
-/*--- decompress.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- 2. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-#include "bzlib_private.h"
-
-
-/*---------------------------------------------------*/
-static
-void makeMaps_d ( DState* s )
-{
- Int32 i;
- s->nInUse = 0;
- for (i = 0; i < 256; i++)
- if (s->inUse[i]) {
- s->seqToUnseq[s->nInUse] = i;
- s->nInUse++;
- }
-}
-
-
-/*---------------------------------------------------*/
-#define RETURN(rrr) \
- { retVal = rrr; goto save_state_and_return; };
-
-#define GET_BITS(lll,vvv,nnn) \
- case lll: s->state = lll; \
- while (True) { \
- if (s->bsLive >= nnn) { \
- UInt32 v; \
- v = (s->bsBuff >> \
- (s->bsLive-nnn)) & ((1 << nnn)-1); \
- s->bsLive -= nnn; \
- vvv = v; \
- break; \
- } \
- if (s->strm->avail_in == 0) RETURN(BZ_OK); \
- s->bsBuff \
- = (s->bsBuff << 8) | \
- ((UInt32) \
- (*((UChar*)(s->strm->next_in)))); \
- s->bsLive += 8; \
- s->strm->next_in++; \
- s->strm->avail_in--; \
- s->strm->total_in_lo32++; \
- if (s->strm->total_in_lo32 == 0) \
- s->strm->total_in_hi32++; \
- }
-
-#define GET_UCHAR(lll,uuu) \
- GET_BITS(lll,uuu,8)
-
-#define GET_BIT(lll,uuu) \
- GET_BITS(lll,uuu,1)
-
-/*---------------------------------------------------*/
-#define GET_MTF_VAL(label1,label2,lval) \
-{ \
- if (groupPos == 0) { \
- groupNo++; \
- if (groupNo >= nSelectors) \
- RETURN(BZ_DATA_ERROR); \
- groupPos = BZ_G_SIZE; \
- gSel = s->selector[groupNo]; \
- gMinlen = s->minLens[gSel]; \
- gLimit = &(s->limit[gSel][0]); \
- gPerm = &(s->perm[gSel][0]); \
- gBase = &(s->base[gSel][0]); \
- } \
- groupPos--; \
- zn = gMinlen; \
- GET_BITS(label1, zvec, zn); \
- while (1) { \
- if (zn > 20 /* the longest code */) \
- RETURN(BZ_DATA_ERROR); \
- if (zvec <= gLimit[zn]) break; \
- zn++; \
- GET_BIT(label2, zj); \
- zvec = (zvec << 1) | zj; \
- }; \
- if (zvec - gBase[zn] < 0 \
- || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
- RETURN(BZ_DATA_ERROR); \
- lval = gPerm[zvec - gBase[zn]]; \
-}
-
-
-/*---------------------------------------------------*/
-Int32 BZ2_decompress ( DState* s )
-{
- UChar uc;
- Int32 retVal;
- Int32 minLen, maxLen;
- bz_stream* strm = s->strm;
-
- /* stuff that needs to be saved/restored */
- Int32 i;
- Int32 j;
- Int32 t;
- Int32 alphaSize;
- Int32 nGroups;
- Int32 nSelectors;
- Int32 EOB;
- Int32 groupNo;
- Int32 groupPos;
- Int32 nextSym;
- Int32 nblockMAX;
- Int32 nblock;
- Int32 es;
- Int32 N;
- Int32 curr;
- Int32 zt;
- Int32 zn;
- Int32 zvec;
- Int32 zj;
- Int32 gSel;
- Int32 gMinlen;
- Int32* gLimit;
- Int32* gBase;
- Int32* gPerm;
-
- if (s->state == BZ_X_MAGIC_1) {
- /*initialise the save area*/
- s->save_i = 0;
- s->save_j = 0;
- s->save_t = 0;
- s->save_alphaSize = 0;
- s->save_nGroups = 0;
- s->save_nSelectors = 0;
- s->save_EOB = 0;
- s->save_groupNo = 0;
- s->save_groupPos = 0;
- s->save_nextSym = 0;
- s->save_nblockMAX = 0;
- s->save_nblock = 0;
- s->save_es = 0;
- s->save_N = 0;
- s->save_curr = 0;
- s->save_zt = 0;
- s->save_zn = 0;
- s->save_zvec = 0;
- s->save_zj = 0;
- s->save_gSel = 0;
- s->save_gMinlen = 0;
- s->save_gLimit = NULL;
- s->save_gBase = NULL;
- s->save_gPerm = NULL;
- }
-
- /*restore from the save area*/
- i = s->save_i;
- j = s->save_j;
- t = s->save_t;
- alphaSize = s->save_alphaSize;
- nGroups = s->save_nGroups;
- nSelectors = s->save_nSelectors;
- EOB = s->save_EOB;
- groupNo = s->save_groupNo;
- groupPos = s->save_groupPos;
- nextSym = s->save_nextSym;
- nblockMAX = s->save_nblockMAX;
- nblock = s->save_nblock;
- es = s->save_es;
- N = s->save_N;
- curr = s->save_curr;
- zt = s->save_zt;
- zn = s->save_zn;
- zvec = s->save_zvec;
- zj = s->save_zj;
- gSel = s->save_gSel;
- gMinlen = s->save_gMinlen;
- gLimit = s->save_gLimit;
- gBase = s->save_gBase;
- gPerm = s->save_gPerm;
-
- retVal = BZ_OK;
-
- switch (s->state) {
-
- GET_UCHAR(BZ_X_MAGIC_1, uc);
- if (uc != BZ_HDR_B) RETURN(BZ_DATA_ERROR_MAGIC);
-
- GET_UCHAR(BZ_X_MAGIC_2, uc);
- if (uc != BZ_HDR_Z) RETURN(BZ_DATA_ERROR_MAGIC);
-
- GET_UCHAR(BZ_X_MAGIC_3, uc)
- if (uc != BZ_HDR_h) RETURN(BZ_DATA_ERROR_MAGIC);
-
- GET_BITS(BZ_X_MAGIC_4, s->blockSize100k, 8)
- if (s->blockSize100k < (BZ_HDR_0 + 1) ||
- s->blockSize100k > (BZ_HDR_0 + 9)) RETURN(BZ_DATA_ERROR_MAGIC);
- s->blockSize100k -= BZ_HDR_0;
-
- if (s->smallDecompress) {
- s->ll16 = BZALLOC( s->blockSize100k * 100000 * sizeof(UInt16) );
- s->ll4 = BZALLOC(
- ((1 + s->blockSize100k * 100000) >> 1) * sizeof(UChar)
- );
- if (s->ll16 == NULL || s->ll4 == NULL) RETURN(BZ_MEM_ERROR);
- } else {
- s->tt = BZALLOC( s->blockSize100k * 100000 * sizeof(Int32) );
- if (s->tt == NULL) RETURN(BZ_MEM_ERROR);
- }
-
- GET_UCHAR(BZ_X_BLKHDR_1, uc);
-
- if (uc == 0x17) goto endhdr_2;
- if (uc != 0x31) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_BLKHDR_2, uc);
- if (uc != 0x41) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_BLKHDR_3, uc);
- if (uc != 0x59) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_BLKHDR_4, uc);
- if (uc != 0x26) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_BLKHDR_5, uc);
- if (uc != 0x53) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_BLKHDR_6, uc);
- if (uc != 0x59) RETURN(BZ_DATA_ERROR);
-
- s->currBlockNo++;
- if (s->verbosity >= 2)
- VPrintf1 ( "\n [%d: huff+mtf ", s->currBlockNo );
-
- s->storedBlockCRC = 0;
- GET_UCHAR(BZ_X_BCRC_1, uc);
- s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_BCRC_2, uc);
- s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_BCRC_3, uc);
- s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_BCRC_4, uc);
- s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
-
- GET_BITS(BZ_X_RANDBIT, s->blockRandomised, 1);
-
- s->origPtr = 0;
- GET_UCHAR(BZ_X_ORIGPTR_1, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
- GET_UCHAR(BZ_X_ORIGPTR_2, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
- GET_UCHAR(BZ_X_ORIGPTR_3, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
-
- if (s->origPtr < 0)
- RETURN(BZ_DATA_ERROR);
- if (s->origPtr > 10 + 100000*s->blockSize100k)
- RETURN(BZ_DATA_ERROR);
-
- /*--- Receive the mapping table ---*/
- for (i = 0; i < 16; i++) {
- GET_BIT(BZ_X_MAPPING_1, uc);
- if (uc == 1)
- s->inUse16[i] = True; else
- s->inUse16[i] = False;
- }
-
- for (i = 0; i < 256; i++) s->inUse[i] = False;
-
- for (i = 0; i < 16; i++)
- if (s->inUse16[i])
- for (j = 0; j < 16; j++) {
- GET_BIT(BZ_X_MAPPING_2, uc);
- if (uc == 1) s->inUse[i * 16 + j] = True;
- }
- makeMaps_d ( s );
- if (s->nInUse == 0) RETURN(BZ_DATA_ERROR);
- alphaSize = s->nInUse+2;
-
- /*--- Now the selectors ---*/
- GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
- if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
- GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
- if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
- for (i = 0; i < nSelectors; i++) {
- j = 0;
- while (True) {
- GET_BIT(BZ_X_SELECTOR_3, uc);
- if (uc == 0) break;
- j++;
- if (j >= nGroups) RETURN(BZ_DATA_ERROR);
- }
- s->selectorMtf[i] = j;
- }
-
- /*--- Undo the MTF values for the selectors. ---*/
- {
- UChar pos[BZ_N_GROUPS], tmp, v;
- for (v = 0; v < nGroups; v++) pos[v] = v;
-
- for (i = 0; i < nSelectors; i++) {
- v = s->selectorMtf[i];
- tmp = pos[v];
- while (v > 0) { pos[v] = pos[v-1]; v--; }
- pos[0] = tmp;
- s->selector[i] = tmp;
- }
- }
-
- /*--- Now the coding tables ---*/
- for (t = 0; t < nGroups; t++) {
- GET_BITS(BZ_X_CODING_1, curr, 5);
- for (i = 0; i < alphaSize; i++) {
- while (True) {
- if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR);
- GET_BIT(BZ_X_CODING_2, uc);
- if (uc == 0) break;
- GET_BIT(BZ_X_CODING_3, uc);
- if (uc == 0) curr++; else curr--;
- }
- s->len[t][i] = curr;
- }
- }
-
- /*--- Create the Huffman decoding tables ---*/
- for (t = 0; t < nGroups; t++) {
- minLen = 32;
- maxLen = 0;
- for (i = 0; i < alphaSize; i++) {
- if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
- if (s->len[t][i] < minLen) minLen = s->len[t][i];
- }
- BZ2_hbCreateDecodeTables (
- &(s->limit[t][0]),
- &(s->base[t][0]),
- &(s->perm[t][0]),
- &(s->len[t][0]),
- minLen, maxLen, alphaSize
- );
- s->minLens[t] = minLen;
- }
-
- /*--- Now the MTF values ---*/
-
- EOB = s->nInUse+1;
- nblockMAX = 100000 * s->blockSize100k;
- groupNo = -1;
- groupPos = 0;
-
- for (i = 0; i <= 255; i++) s->unzftab[i] = 0;
-
- /*-- MTF init --*/
- {
- Int32 ii, jj, kk;
- kk = MTFA_SIZE-1;
- for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
- for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
- s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj);
- kk--;
- }
- s->mtfbase[ii] = kk + 1;
- }
- }
- /*-- end MTF init --*/
-
- nblock = 0;
- GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym);
-
- while (True) {
-
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- WATCHDOG_RESET();
-#endif
- if (nextSym == EOB) break;
-
- if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
-
- es = -1;
- N = 1;
- do {
- if (nextSym == BZ_RUNA) es = es + (0+1) * N; else
- if (nextSym == BZ_RUNB) es = es + (1+1) * N;
- N = N * 2;
- GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym);
- }
- while (nextSym == BZ_RUNA || nextSym == BZ_RUNB);
-
- es++;
- uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
- s->unzftab[uc] += es;
-
- if (s->smallDecompress)
- while (es > 0) {
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
- s->ll16[nblock] = (UInt16)uc;
- nblock++;
- es--;
- }
- else
- while (es > 0) {
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
- s->tt[nblock] = (UInt32)uc;
- nblock++;
- es--;
- };
-
- continue;
-
- } else {
-
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
-
- /*-- uc = MTF ( nextSym-1 ) --*/
- {
- Int32 ii, jj, kk, pp, lno, off;
- UInt32 nn;
- nn = (UInt32)(nextSym - 1);
-
- if (nn < MTFL_SIZE) {
- /* avoid general-case expense */
- pp = s->mtfbase[0];
- uc = s->mtfa[pp+nn];
- while (nn > 3) {
- Int32 z = pp+nn;
- s->mtfa[(z) ] = s->mtfa[(z)-1];
- s->mtfa[(z)-1] = s->mtfa[(z)-2];
- s->mtfa[(z)-2] = s->mtfa[(z)-3];
- s->mtfa[(z)-3] = s->mtfa[(z)-4];
- nn -= 4;
- }
- while (nn > 0) {
- s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
- };
- s->mtfa[pp] = uc;
- } else {
- /* general case */
- lno = nn / MTFL_SIZE;
- off = nn % MTFL_SIZE;
- pp = s->mtfbase[lno] + off;
- uc = s->mtfa[pp];
- while (pp > s->mtfbase[lno]) {
- s->mtfa[pp] = s->mtfa[pp-1]; pp--;
- };
- s->mtfbase[lno]++;
- while (lno > 0) {
- s->mtfbase[lno]--;
- s->mtfa[s->mtfbase[lno]]
- = s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
- lno--;
- }
- s->mtfbase[0]--;
- s->mtfa[s->mtfbase[0]] = uc;
- if (s->mtfbase[0] == 0) {
- kk = MTFA_SIZE-1;
- for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- WATCHDOG_RESET();
-#endif
- for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
- s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
- kk--;
- }
- s->mtfbase[ii] = kk + 1;
- }
- }
- }
- }
- /*-- end uc = MTF ( nextSym-1 ) --*/
-
- s->unzftab[s->seqToUnseq[uc]]++;
- if (s->smallDecompress)
- s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]); else
- s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]);
- nblock++;
-
- GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym);
- continue;
- }
- }
-
- /* Now we know what nblock is, we can do a better sanity
- check on s->origPtr.
- */
- if (s->origPtr < 0 || s->origPtr >= nblock)
- RETURN(BZ_DATA_ERROR);
-
- s->state_out_len = 0;
- s->state_out_ch = 0;
- BZ_INITIALISE_CRC ( s->calculatedBlockCRC );
- s->state = BZ_X_OUTPUT;
- if (s->verbosity >= 2) VPrintf0 ( "rt+rld" );
-
- /*-- Set up cftab to facilitate generation of T^(-1) --*/
- s->cftab[0] = 0;
- for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1];
- for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1];
-
- if (s->smallDecompress) {
-
- /*-- Make a copy of cftab, used in generation of T --*/
- for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i];
-
- /*-- compute the T vector --*/
- for (i = 0; i < nblock; i++) {
- uc = (UChar)(s->ll16[i]);
- SET_LL(i, s->cftabCopy[uc]);
- s->cftabCopy[uc]++;
- }
-
- /*-- Compute T^(-1) by pointer reversal on T --*/
- i = s->origPtr;
- j = GET_LL(i);
- do {
- Int32 tmp = GET_LL(j);
- SET_LL(j, i);
- i = j;
- j = tmp;
- }
- while (i != s->origPtr);
-
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- WATCHDOG_RESET();
-#endif
- s->tPos = s->origPtr;
- s->nblock_used = 0;
- if (s->blockRandomised) {
- BZ_RAND_INIT_MASK;
- BZ_GET_SMALL(s->k0); s->nblock_used++;
- BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
- } else {
- BZ_GET_SMALL(s->k0); s->nblock_used++;
- }
-
- } else {
-
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- WATCHDOG_RESET();
-#endif
- /*-- compute the T^(-1) vector --*/
- for (i = 0; i < nblock; i++) {
- uc = (UChar)(s->tt[i] & 0xff);
- s->tt[s->cftab[uc]] |= (i << 8);
- s->cftab[uc]++;
- }
-
- s->tPos = s->tt[s->origPtr] >> 8;
- s->nblock_used = 0;
- if (s->blockRandomised) {
- BZ_RAND_INIT_MASK;
- BZ_GET_FAST(s->k0); s->nblock_used++;
- BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
- } else {
- BZ_GET_FAST(s->k0); s->nblock_used++;
- }
-
- }
-
- RETURN(BZ_OK);
-
-
- endhdr_2:
-
- GET_UCHAR(BZ_X_ENDHDR_2, uc);
- if (uc != 0x72) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_ENDHDR_3, uc);
- if (uc != 0x45) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_ENDHDR_4, uc);
- if (uc != 0x38) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_ENDHDR_5, uc);
- if (uc != 0x50) RETURN(BZ_DATA_ERROR);
- GET_UCHAR(BZ_X_ENDHDR_6, uc);
- if (uc != 0x90) RETURN(BZ_DATA_ERROR);
-
- s->storedCombinedCRC = 0;
- GET_UCHAR(BZ_X_CCRC_1, uc);
- s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_CCRC_2, uc);
- s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_CCRC_3, uc);
- s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
- GET_UCHAR(BZ_X_CCRC_4, uc);
- s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
-
- s->state = BZ_X_IDLE;
- RETURN(BZ_STREAM_END);
-
- default: AssertH ( False, 4001 );
- }
-
- AssertH ( False, 4002 );
-
- save_state_and_return:
-
- s->save_i = i;
- s->save_j = j;
- s->save_t = t;
- s->save_alphaSize = alphaSize;
- s->save_nGroups = nGroups;
- s->save_nSelectors = nSelectors;
- s->save_EOB = EOB;
- s->save_groupNo = groupNo;
- s->save_groupPos = groupPos;
- s->save_nextSym = nextSym;
- s->save_nblockMAX = nblockMAX;
- s->save_nblock = nblock;
- s->save_es = es;
- s->save_N = N;
- s->save_curr = curr;
- s->save_zt = zt;
- s->save_zn = zn;
- s->save_zvec = zvec;
- s->save_zj = zj;
- s->save_gSel = gSel;
- s->save_gMinlen = gMinlen;
- s->save_gLimit = gLimit;
- s->save_gBase = gBase;
- s->save_gPerm = gPerm;
-
- return retVal;
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end decompress.c ---*/
-/*-------------------------------------------------------------*/
diff --git a/lib/bzlib_huffman.c b/lib/bzlib_huffman.c
deleted file mode 100644
index 801b8ec39a..0000000000
--- a/lib/bzlib_huffman.c
+++ /dev/null
@@ -1,229 +0,0 @@
-#include <config.h>
-
-/*-------------------------------------------------------------*/
-/*--- Huffman coding low-level stuff ---*/
-/*--- huffman.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- 2. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-#include "bzlib_private.h"
-
-/*---------------------------------------------------*/
-#define WEIGHTOF(zz0) ((zz0) & 0xffffff00)
-#define DEPTHOF(zz1) ((zz1) & 0x000000ff)
-#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3))
-
-#define ADDWEIGHTS(zw1,zw2) \
- (WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
- (1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2)))
-
-#define UPHEAP(z) \
-{ \
- Int32 zz, tmp; \
- zz = z; tmp = heap[zz]; \
- while (weight[tmp] < weight[heap[zz >> 1]]) { \
- heap[zz] = heap[zz >> 1]; \
- zz >>= 1; \
- } \
- heap[zz] = tmp; \
-}
-
-#define DOWNHEAP(z) \
-{ \
- Int32 zz, yy, tmp; \
- zz = z; tmp = heap[zz]; \
- while (True) { \
- yy = zz << 1; \
- if (yy > nHeap) break; \
- if (yy < nHeap && \
- weight[heap[yy+1]] < weight[heap[yy]]) \
- yy++; \
- if (weight[tmp] < weight[heap[yy]]) break; \
- heap[zz] = heap[yy]; \
- zz = yy; \
- } \
- heap[zz] = tmp; \
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_hbMakeCodeLengths ( UChar *len,
- Int32 *freq,
- Int32 alphaSize,
- Int32 maxLen )
-{
- /*--
- Nodes and heap entries run from 1. Entry 0
- for both the heap and nodes is a sentinel.
- --*/
- Int32 nNodes, nHeap, n1, n2, i, j, k;
- Bool tooLong;
-
- Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ];
- Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ];
- Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
-
- for (i = 0; i < alphaSize; i++)
- weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
-
- while (True) {
-
- nNodes = alphaSize;
- nHeap = 0;
-
- heap[0] = 0;
- weight[0] = 0;
- parent[0] = -2;
-
- for (i = 1; i <= alphaSize; i++) {
- parent[i] = -1;
- nHeap++;
- heap[nHeap] = i;
- UPHEAP(nHeap);
- }
-
- AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 );
-
- while (nHeap > 1) {
- n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
- n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
- nNodes++;
- parent[n1] = parent[n2] = nNodes;
- weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]);
- parent[nNodes] = -1;
- nHeap++;
- heap[nHeap] = nNodes;
- UPHEAP(nHeap);
- }
-
- AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 );
-
- tooLong = False;
- for (i = 1; i <= alphaSize; i++) {
- j = 0;
- k = i;
- while (parent[k] >= 0) { k = parent[k]; j++; }
- len[i-1] = j;
- if (j > maxLen) tooLong = True;
- }
-
- if (! tooLong) break;
-
- for (i = 1; i < alphaSize; i++) {
- j = weight[i] >> 8;
- j = 1 + (j / 2);
- weight[i] = j << 8;
- }
- }
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_hbAssignCodes ( Int32 *code,
- UChar *length,
- Int32 minLen,
- Int32 maxLen,
- Int32 alphaSize )
-{
- Int32 n, vec, i;
-
- vec = 0;
- for (n = minLen; n <= maxLen; n++) {
- for (i = 0; i < alphaSize; i++)
- if (length[i] == n) { code[i] = vec; vec++; };
- vec <<= 1;
- }
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_hbCreateDecodeTables ( Int32 *limit,
- Int32 *base,
- Int32 *perm,
- UChar *length,
- Int32 minLen,
- Int32 maxLen,
- Int32 alphaSize )
-{
- Int32 pp, i, j, vec;
-
- pp = 0;
- for (i = minLen; i <= maxLen; i++)
- for (j = 0; j < alphaSize; j++)
- if (length[j] == i) { perm[pp] = j; pp++; };
-
- for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0;
- for (i = 0; i < alphaSize; i++) base[length[i]+1]++;
-
- for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1];
-
- for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0;
- vec = 0;
-
- for (i = minLen; i <= maxLen; i++) {
- vec += (base[i+1] - base[i]);
- limit[i] = vec-1;
- vec <<= 1;
- }
- for (i = minLen + 1; i <= maxLen; i++)
- base[i] = ((limit[i-1] + 1) << 1) - base[i];
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end huffman.c ---*/
-/*-------------------------------------------------------------*/
diff --git a/lib/bzlib_randtable.c b/lib/bzlib_randtable.c
deleted file mode 100644
index e620c3ea96..0000000000
--- a/lib/bzlib_randtable.c
+++ /dev/null
@@ -1,126 +0,0 @@
-#include <config.h>
-
-/*-------------------------------------------------------------*/
-/*--- Table for randomising repetitive blocks ---*/
-/*--- randtable.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- 2. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-#include "bzlib_private.h"
-
-
-/*---------------------------------------------*/
-Int32 BZ2_rNums[512] = {
- 619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
- 985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
- 733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
- 419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
- 878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
- 862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
- 150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
- 170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
- 73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
- 909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
- 641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
- 161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
- 382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
- 98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
- 227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
- 469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
- 184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
- 715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
- 951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
- 652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
- 645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
- 609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
- 653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
- 411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
- 170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
- 857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
- 669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
- 944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
- 344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
- 897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
- 433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
- 686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
- 946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
- 978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
- 680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
- 707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
- 297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
- 134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
- 343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
- 140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
- 170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
- 369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
- 804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
- 896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
- 661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
- 768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
- 61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
- 372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
- 780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
- 920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
- 645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
- 936, 638
-};
-
-
-/*-------------------------------------------------------------*/
-/*--- end randtable.c ---*/
-/*-------------------------------------------------------------*/
-
diff --git a/lib/copy_file.c b/lib/copy_file.c
index 809befe369..967806c3b0 100644
--- a/lib/copy_file.c
+++ b/lib/copy_file.c
@@ -4,20 +4,23 @@
#include <errno.h>
#include <malloc.h>
#include <libbb.h>
+#include <progress.h>
#define RW_BUF_SIZE (ulong)4096
/**
* @param[in] src FIXME
* @param[out] dst FIXME
+ * @param[in] verbose FIXME
*/
-int copy_file(const char *src, const char *dst)
+int copy_file(const char *src, const char *dst, int verbose)
{
char *rw_buf = NULL;
int srcfd = 0, dstfd = 0;
int r, w;
int ret = 1;
void *buf;
+ int total = 0;
rw_buf = xmalloc(RW_BUF_SIZE);
@@ -33,6 +36,15 @@ int copy_file(const char *src, const char *dst)
goto out;
}
+ if (verbose) {
+ struct stat statbuf;
+
+ if (stat(src, &statbuf) < 0)
+ statbuf.st_size = 0;
+
+ init_progression_bar(statbuf.st_size);
+ }
+
while(1) {
r = read(srcfd, rw_buf, RW_BUF_SIZE);
if (r < 0) {
@@ -51,11 +63,18 @@ int copy_file(const char *src, const char *dst)
}
buf += w;
r -= w;
+ total += w;
}
+
+ if (verbose)
+ show_progress(total);
}
ret = 0;
out:
+ if (verbose)
+ putchar('\n');
+
free(rw_buf);
if (srcfd > 0)
close(srcfd);
diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c
new file mode 100644
index 0000000000..4b6edd16a8
--- /dev/null
+++ b/lib/decompress_bunzip2.c
@@ -0,0 +1,756 @@
+/* vi: set sw = 4 ts = 4: */
+/* Small bzip2 deflate implementation, by Rob Landley (rob@landley.net).
+
+ Based on bzip2 decompression code by Julian R Seward (jseward@acm.org),
+ which also acknowledges contributions by Mike Burrows, David Wheeler,
+ Peter Fenwick, Alistair Moffat, Radford Neal, Ian H. Witten,
+ Robert Sedgewick, and Jon L. Bentley.
+
+ This code is licensed under the LGPLv2:
+ LGPL (http://www.gnu.org/copyleft/lgpl.html
+*/
+
+/*
+ Size and speed optimizations by Manuel Novoa III (mjn3@codepoet.org).
+
+ More efficient reading of Huffman codes, a streamlined read_bunzip()
+ function, and various other tweaks. In (limited) tests, approximately
+ 20% faster than bzcat on x86 and about 10% faster on arm.
+
+ Note that about 2/3 of the time is spent in read_unzip() reversing
+ the Burrows-Wheeler transformation. Much of that time is delay
+ resulting from cache misses.
+
+ I would ask that anyone benefiting from this work, especially those
+ using it in commercial products, consider making a donation to my local
+ non-profit hospice organization in the name of the woman I loved, who
+ passed away Feb. 12, 2003.
+
+ In memory of Toni W. Hagan
+
+ Hospice of Acadiana, Inc.
+ 2600 Johnston St., Suite 200
+ Lafayette, LA 70503-3240
+
+ Phone (337) 232-1234 or 1-800-738-2226
+ Fax (337) 232-1297
+
+ http://www.hospiceacadiana.com/
+
+ Manuel
+ */
+
+/*
+ Made it fit for running in Linux Kernel by Alain Knaff (alain@knaff.lu)
+*/
+
+#include <common.h>
+#include <malloc.h>
+
+#ifdef STATIC
+#define PREBOOT
+#else
+#include <bunzip2.h>
+#endif /* STATIC */
+
+#ifndef INT_MAX
+#define INT_MAX 0x7fffffff
+#endif
+
+/* Constants for Huffman coding */
+#define MAX_GROUPS 6
+#define GROUP_SIZE 50 /* 64 would have been more efficient */
+#define MAX_HUFCODE_BITS 20 /* Longest Huffman code allowed */
+#define MAX_SYMBOLS 258 /* 256 literals + RUNA + RUNB */
+#define SYMBOL_RUNA 0
+#define SYMBOL_RUNB 1
+
+/* Status return values */
+#define RETVAL_OK 0
+#define RETVAL_LAST_BLOCK (-1)
+#define RETVAL_NOT_BZIP_DATA (-2)
+#define RETVAL_UNEXPECTED_INPUT_EOF (-3)
+#define RETVAL_UNEXPECTED_OUTPUT_EOF (-4)
+#define RETVAL_DATA_ERROR (-5)
+#define RETVAL_OUT_OF_MEMORY (-6)
+#define RETVAL_OBSOLETE_INPUT (-7)
+
+/* Other housekeeping constants */
+#define BZIP2_IOBUF_SIZE 4096
+
+/* This is what we know about each Huffman coding group */
+struct group_data {
+ /* We have an extra slot at the end of limit[] for a sentinal value. */
+ int limit[MAX_HUFCODE_BITS+1];
+ int base[MAX_HUFCODE_BITS];
+ int permute[MAX_SYMBOLS];
+ int minLen, maxLen;
+};
+
+/* Structure holding all the housekeeping data, including IO buffers and
+ memory that persists between calls to bunzip */
+struct bunzip_data {
+ /* State for interrupting output loop */
+ int writeCopies, writePos, writeRunCountdown, writeCount, writeCurrent;
+ /* I/O tracking data (file handles, buffers, positions, etc.) */
+ int (*fill)(void*, unsigned int);
+ int inbufCount, inbufPos /*, outbufPos*/;
+ unsigned char *inbuf /*,*outbuf*/;
+ unsigned int inbufBitCount, inbufBits;
+ /* The CRC values stored in the block header and calculated from the
+ data */
+ unsigned int crc32Table[256], headerCRC, totalCRC, writeCRC;
+ /* Intermediate buffer and its size (in bytes) */
+ unsigned int *dbuf, dbufSize;
+ /* These things are a bit too big to go on the stack */
+ unsigned char selectors[32768]; /* nSelectors = 15 bits */
+ struct group_data groups[MAX_GROUPS]; /* Huffman coding tables */
+ int io_error; /* non-zero if we have IO error */
+ int byteCount[256];
+ unsigned char symToByte[256], mtfSymbol[256];
+};
+
+
+/* Return the next nnn bits of input. All reads from the compressed input
+ are done through this function. All reads are big endian */
+static unsigned int get_bits(struct bunzip_data *bd, char bits_wanted)
+{
+ unsigned int bits = 0;
+
+ /* If we need to get more data from the byte buffer, do so.
+ (Loop getting one byte at a time to enforce endianness and avoid
+ unaligned access.) */
+ while (bd->inbufBitCount < bits_wanted) {
+ /* If we need to read more data from file into byte buffer, do
+ so */
+ if (bd->inbufPos == bd->inbufCount) {
+ if (bd->io_error)
+ return 0;
+ bd->inbufCount = bd->fill(bd->inbuf, BZIP2_IOBUF_SIZE);
+ if (bd->inbufCount <= 0) {
+ bd->io_error = RETVAL_UNEXPECTED_INPUT_EOF;
+ return 0;
+ }
+ bd->inbufPos = 0;
+ }
+ /* Avoid 32-bit overflow (dump bit buffer to top of output) */
+ if (bd->inbufBitCount >= 24) {
+ bits = bd->inbufBits&((1 << bd->inbufBitCount)-1);
+ bits_wanted -= bd->inbufBitCount;
+ bits <<= bits_wanted;
+ bd->inbufBitCount = 0;
+ }
+ /* Grab next 8 bits of input from buffer. */
+ bd->inbufBits = (bd->inbufBits << 8)|bd->inbuf[bd->inbufPos++];
+ bd->inbufBitCount += 8;
+ }
+ /* Calculate result */
+ bd->inbufBitCount -= bits_wanted;
+ bits |= (bd->inbufBits >> bd->inbufBitCount)&((1 << bits_wanted)-1);
+
+ return bits;
+}
+
+/* Unpacks the next block and sets up for the inverse burrows-wheeler step. */
+
+static int get_next_block(struct bunzip_data *bd)
+{
+ struct group_data *hufGroup = NULL;
+ int *base = NULL;
+ int *limit = NULL;
+ int dbufCount, nextSym, dbufSize, groupCount, selector,
+ i, j, k, t, runPos, symCount, symTotal, nSelectors, *byteCount;
+ unsigned char uc, *symToByte, *mtfSymbol, *selectors;
+ unsigned int *dbuf, origPtr;
+
+ dbuf = bd->dbuf;
+ dbufSize = bd->dbufSize;
+ selectors = bd->selectors;
+ byteCount = bd->byteCount;
+ symToByte = bd->symToByte;
+ mtfSymbol = bd->mtfSymbol;
+
+ /* Read in header signature and CRC, then validate signature.
+ (last block signature means CRC is for whole file, return now) */
+ i = get_bits(bd, 24);
+ j = get_bits(bd, 24);
+ bd->headerCRC = get_bits(bd, 32);
+ if ((i == 0x177245) && (j == 0x385090))
+ return RETVAL_LAST_BLOCK;
+ if ((i != 0x314159) || (j != 0x265359))
+ return RETVAL_NOT_BZIP_DATA;
+ /* We can add support for blockRandomised if anybody complains.
+ There was some code for this in busybox 1.0.0-pre3, but nobody ever
+ noticed that it didn't actually work. */
+ if (get_bits(bd, 1))
+ return RETVAL_OBSOLETE_INPUT;
+ origPtr = get_bits(bd, 24);
+ if (origPtr > dbufSize)
+ return RETVAL_DATA_ERROR;
+ /* mapping table: if some byte values are never used (encoding things
+ like ascii text), the compression code removes the gaps to have fewer
+ symbols to deal with, and writes a sparse bitfield indicating which
+ values were present. We make a translation table to convert the
+ symbols back to the corresponding bytes. */
+ t = get_bits(bd, 16);
+ symTotal = 0;
+ for (i = 0; i < 16; i++) {
+ if (t&(1 << (15-i))) {
+ k = get_bits(bd, 16);
+ for (j = 0; j < 16; j++)
+ if (k&(1 << (15-j)))
+ symToByte[symTotal++] = (16*i)+j;
+ }
+ }
+ /* How many different Huffman coding groups does this block use? */
+ groupCount = get_bits(bd, 3);
+ if (groupCount < 2 || groupCount > MAX_GROUPS)
+ return RETVAL_DATA_ERROR;
+ /* nSelectors: Every GROUP_SIZE many symbols we select a new
+ Huffman coding group. Read in the group selector list,
+ which is stored as MTF encoded bit runs. (MTF = Move To
+ Front, as each value is used it's moved to the start of the
+ list.) */
+ nSelectors = get_bits(bd, 15);
+ if (!nSelectors)
+ return RETVAL_DATA_ERROR;
+ for (i = 0; i < groupCount; i++)
+ mtfSymbol[i] = i;
+ for (i = 0; i < nSelectors; i++) {
+ /* Get next value */
+ for (j = 0; get_bits(bd, 1); j++)
+ if (j >= groupCount)
+ return RETVAL_DATA_ERROR;
+ /* Decode MTF to get the next selector */
+ uc = mtfSymbol[j];
+ for (; j; j--)
+ mtfSymbol[j] = mtfSymbol[j-1];
+ mtfSymbol[0] = selectors[i] = uc;
+ }
+ /* Read the Huffman coding tables for each group, which code
+ for symTotal literal symbols, plus two run symbols (RUNA,
+ RUNB) */
+ symCount = symTotal+2;
+ for (j = 0; j < groupCount; j++) {
+ unsigned char length[MAX_SYMBOLS], temp[MAX_HUFCODE_BITS+1];
+ int minLen, maxLen, pp;
+ /* Read Huffman code lengths for each symbol. They're
+ stored in a way similar to mtf; record a starting
+ value for the first symbol, and an offset from the
+ previous value for everys symbol after that.
+ (Subtracting 1 before the loop and then adding it
+ back at the end is an optimization that makes the
+ test inside the loop simpler: symbol length 0
+ becomes negative, so an unsigned inequality catches
+ it.) */
+ t = get_bits(bd, 5)-1;
+ for (i = 0; i < symCount; i++) {
+ for (;;) {
+ if (((unsigned)t) > (MAX_HUFCODE_BITS-1))
+ return RETVAL_DATA_ERROR;
+
+ /* If first bit is 0, stop. Else
+ second bit indicates whether to
+ increment or decrement the value.
+ Optimization: grab 2 bits and unget
+ the second if the first was 0. */
+
+ k = get_bits(bd, 2);
+ if (k < 2) {
+ bd->inbufBitCount++;
+ break;
+ }
+ /* Add one if second bit 1, else
+ * subtract 1. Avoids if/else */
+ t += (((k+1)&2)-1);
+ }
+ /* Correct for the initial -1, to get the
+ * final symbol length */
+ length[i] = t+1;
+ }
+ /* Find largest and smallest lengths in this group */
+ minLen = maxLen = length[0];
+
+ for (i = 1; i < symCount; i++) {
+ if (length[i] > maxLen)
+ maxLen = length[i];
+ else if (length[i] < minLen)
+ minLen = length[i];
+ }
+
+ /* Calculate permute[], base[], and limit[] tables from
+ * length[].
+ *
+ * permute[] is the lookup table for converting
+ * Huffman coded symbols into decoded symbols. base[]
+ * is the amount to subtract from the value of a
+ * Huffman symbol of a given length when using
+ * permute[].
+ *
+ * limit[] indicates the largest numerical value a
+ * symbol with a given number of bits can have. This
+ * is how the Huffman codes can vary in length: each
+ * code with a value > limit[length] needs another
+ * bit.
+ */
+ hufGroup = bd->groups+j;
+ hufGroup->minLen = minLen;
+ hufGroup->maxLen = maxLen;
+ /* Note that minLen can't be smaller than 1, so we
+ adjust the base and limit array pointers so we're
+ not always wasting the first entry. We do this
+ again when using them (during symbol decoding).*/
+ base = hufGroup->base-1;
+ limit = hufGroup->limit-1;
+ /* Calculate permute[]. Concurrently, initialize
+ * temp[] and limit[]. */
+ pp = 0;
+ for (i = minLen; i <= maxLen; i++) {
+ temp[i] = limit[i] = 0;
+ for (t = 0; t < symCount; t++)
+ if (length[t] == i)
+ hufGroup->permute[pp++] = t;
+ }
+ /* Count symbols coded for at each bit length */
+ for (i = 0; i < symCount; i++)
+ temp[length[i]]++;
+ /* Calculate limit[] (the largest symbol-coding value
+ *at each bit length, which is (previous limit <<
+ *1)+symbols at this level), and base[] (number of
+ *symbols to ignore at each bit length, which is limit
+ *minus the cumulative count of symbols coded for
+ *already). */
+ pp = t = 0;
+ for (i = minLen; i < maxLen; i++) {
+ pp += temp[i];
+ /* We read the largest possible symbol size
+ and then unget bits after determining how
+ many we need, and those extra bits could be
+ set to anything. (They're noise from
+ future symbols.) At each level we're
+ really only interested in the first few
+ bits, so here we set all the trailing
+ to-be-ignored bits to 1 so they don't
+ affect the value > limit[length]
+ comparison. */
+ limit[i] = (pp << (maxLen - i)) - 1;
+ pp <<= 1;
+ base[i+1] = pp-(t += temp[i]);
+ }
+ limit[maxLen+1] = INT_MAX; /* Sentinal value for
+ * reading next sym. */
+ limit[maxLen] = pp+temp[maxLen]-1;
+ base[minLen] = 0;
+ }
+ /* We've finished reading and digesting the block header. Now
+ read this block's Huffman coded symbols from the file and
+ undo the Huffman coding and run length encoding, saving the
+ result into dbuf[dbufCount++] = uc */
+
+ /* Initialize symbol occurrence counters and symbol Move To
+ * Front table */
+ for (i = 0; i < 256; i++) {
+ byteCount[i] = 0;
+ mtfSymbol[i] = (unsigned char)i;
+ }
+ /* Loop through compressed symbols. */
+ runPos = dbufCount = symCount = selector = 0;
+ for (;;) {
+ /* Determine which Huffman coding group to use. */
+ if (!(symCount--)) {
+ symCount = GROUP_SIZE-1;
+ if (selector >= nSelectors)
+ return RETVAL_DATA_ERROR;
+ hufGroup = bd->groups+selectors[selector++];
+ base = hufGroup->base-1;
+ limit = hufGroup->limit-1;
+ }
+ /* Read next Huffman-coded symbol. */
+ /* Note: It is far cheaper to read maxLen bits and
+ back up than it is to read minLen bits and then an
+ additional bit at a time, testing as we go.
+ Because there is a trailing last block (with file
+ CRC), there is no danger of the overread causing an
+ unexpected EOF for a valid compressed file. As a
+ further optimization, we do the read inline
+ (falling back to a call to get_bits if the buffer
+ runs dry). The following (up to got_huff_bits:) is
+ equivalent to j = get_bits(bd, hufGroup->maxLen);
+ */
+ while (bd->inbufBitCount < hufGroup->maxLen) {
+ if (bd->inbufPos == bd->inbufCount) {
+ j = get_bits(bd, hufGroup->maxLen);
+ goto got_huff_bits;
+ }
+ bd->inbufBits =
+ (bd->inbufBits << 8)|bd->inbuf[bd->inbufPos++];
+ bd->inbufBitCount += 8;
+ };
+ bd->inbufBitCount -= hufGroup->maxLen;
+ j = (bd->inbufBits >> bd->inbufBitCount)&
+ ((1 << hufGroup->maxLen)-1);
+got_huff_bits:
+ /* Figure how how many bits are in next symbol and
+ * unget extras */
+ i = hufGroup->minLen;
+ while (j > limit[i])
+ ++i;
+ bd->inbufBitCount += (hufGroup->maxLen - i);
+ /* Huffman decode value to get nextSym (with bounds checking) */
+ if ((i > hufGroup->maxLen)
+ || (((unsigned)(j = (j>>(hufGroup->maxLen-i))-base[i]))
+ >= MAX_SYMBOLS))
+ return RETVAL_DATA_ERROR;
+ nextSym = hufGroup->permute[j];
+ /* We have now decoded the symbol, which indicates
+ either a new literal byte, or a repeated run of the
+ most recent literal byte. First, check if nextSym
+ indicates a repeated run, and if so loop collecting
+ how many times to repeat the last literal. */
+ if (((unsigned)nextSym) <= SYMBOL_RUNB) { /* RUNA or RUNB */
+ /* If this is the start of a new run, zero out
+ * counter */
+ if (!runPos) {
+ runPos = 1;
+ t = 0;
+ }
+ /* Neat trick that saves 1 symbol: instead of
+ or-ing 0 or 1 at each bit position, add 1
+ or 2 instead. For example, 1011 is 1 << 0
+ + 1 << 1 + 2 << 2. 1010 is 2 << 0 + 2 << 1
+ + 1 << 2. You can make any bit pattern
+ that way using 1 less symbol than the basic
+ or 0/1 method (except all bits 0, which
+ would use no symbols, but a run of length 0
+ doesn't mean anything in this context).
+ Thus space is saved. */
+ t += (runPos << nextSym);
+ /* +runPos if RUNA; +2*runPos if RUNB */
+
+ runPos <<= 1;
+ continue;
+ }
+ /* When we hit the first non-run symbol after a run,
+ we now know how many times to repeat the last
+ literal, so append that many copies to our buffer
+ of decoded symbols (dbuf) now. (The last literal
+ used is the one at the head of the mtfSymbol
+ array.) */
+ if (runPos) {
+ runPos = 0;
+ if (dbufCount+t >= dbufSize)
+ return RETVAL_DATA_ERROR;
+
+ uc = symToByte[mtfSymbol[0]];
+ byteCount[uc] += t;
+ while (t--)
+ dbuf[dbufCount++] = uc;
+ }
+ /* Is this the terminating symbol? */
+ if (nextSym > symTotal)
+ break;
+ /* At this point, nextSym indicates a new literal
+ character. Subtract one to get the position in the
+ MTF array at which this literal is currently to be
+ found. (Note that the result can't be -1 or 0,
+ because 0 and 1 are RUNA and RUNB. But another
+ instance of the first symbol in the mtf array,
+ position 0, would have been handled as part of a
+ run above. Therefore 1 unused mtf position minus 2
+ non-literal nextSym values equals -1.) */
+ if (dbufCount >= dbufSize)
+ return RETVAL_DATA_ERROR;
+ i = nextSym - 1;
+ uc = mtfSymbol[i];
+ /* Adjust the MTF array. Since we typically expect to
+ *move only a small number of symbols, and are bound
+ *by 256 in any case, using memmove here would
+ *typically be bigger and slower due to function call
+ *overhead and other assorted setup costs. */
+ do {
+ mtfSymbol[i] = mtfSymbol[i-1];
+ } while (--i);
+ mtfSymbol[0] = uc;
+ uc = symToByte[uc];
+ /* We have our literal byte. Save it into dbuf. */
+ byteCount[uc]++;
+ dbuf[dbufCount++] = (unsigned int)uc;
+ }
+ /* At this point, we've read all the Huffman-coded symbols
+ (and repeated runs) for this block from the input stream,
+ and decoded them into the intermediate buffer. There are
+ dbufCount many decoded bytes in dbuf[]. Now undo the
+ Burrows-Wheeler transform on dbuf. See
+ http://dogma.net/markn/articles/bwt/bwt.htm
+ */
+ /* Turn byteCount into cumulative occurrence counts of 0 to n-1. */
+ j = 0;
+ for (i = 0; i < 256; i++) {
+ k = j+byteCount[i];
+ byteCount[i] = j;
+ j = k;
+ }
+ /* Figure out what order dbuf would be in if we sorted it. */
+ for (i = 0; i < dbufCount; i++) {
+ uc = (unsigned char)(dbuf[i] & 0xff);
+ dbuf[byteCount[uc]] |= (i << 8);
+ byteCount[uc]++;
+ }
+ /* Decode first byte by hand to initialize "previous" byte.
+ Note that it doesn't get output, and if the first three
+ characters are identical it doesn't qualify as a run (hence
+ writeRunCountdown = 5). */
+ if (dbufCount) {
+ if (origPtr >= dbufCount)
+ return RETVAL_DATA_ERROR;
+ bd->writePos = dbuf[origPtr];
+ bd->writeCurrent = (unsigned char)(bd->writePos&0xff);
+ bd->writePos >>= 8;
+ bd->writeRunCountdown = 5;
+ }
+ bd->writeCount = dbufCount;
+
+ return RETVAL_OK;
+}
+
+/* Undo burrows-wheeler transform on intermediate buffer to produce output.
+ If start_bunzip was initialized with out_fd =-1, then up to len bytes of
+ data are written to outbuf. Return value is number of bytes written or
+ error (all errors are negative numbers). If out_fd!=-1, outbuf and len
+ are ignored, data is written to out_fd and return is RETVAL_OK or error.
+*/
+
+static int read_bunzip(struct bunzip_data *bd, char *outbuf, int len)
+{
+ const unsigned int *dbuf;
+ int pos, xcurrent, previous, gotcount;
+
+ /* If last read was short due to end of file, return last block now */
+ if (bd->writeCount < 0)
+ return bd->writeCount;
+
+ gotcount = 0;
+ dbuf = bd->dbuf;
+ pos = bd->writePos;
+ xcurrent = bd->writeCurrent;
+
+ /* We will always have pending decoded data to write into the output
+ buffer unless this is the very first call (in which case we haven't
+ Huffman-decoded a block into the intermediate buffer yet). */
+
+ if (bd->writeCopies) {
+ /* Inside the loop, writeCopies means extra copies (beyond 1) */
+ --bd->writeCopies;
+ /* Loop outputting bytes */
+ for (;;) {
+ /* If the output buffer is full, snapshot
+ * state and return */
+ if (gotcount >= len) {
+ bd->writePos = pos;
+ bd->writeCurrent = xcurrent;
+ bd->writeCopies++;
+ return len;
+ }
+ /* Write next byte into output buffer, updating CRC */
+ outbuf[gotcount++] = xcurrent;
+ bd->writeCRC = (((bd->writeCRC) << 8)
+ ^bd->crc32Table[((bd->writeCRC) >> 24)
+ ^xcurrent]);
+ /* Loop now if we're outputting multiple
+ * copies of this byte */
+ if (bd->writeCopies) {
+ --bd->writeCopies;
+ continue;
+ }
+decode_next_byte:
+ if (!bd->writeCount--)
+ break;
+ /* Follow sequence vector to undo
+ * Burrows-Wheeler transform */
+ previous = xcurrent;
+ pos = dbuf[pos];
+ xcurrent = pos&0xff;
+ pos >>= 8;
+ /* After 3 consecutive copies of the same
+ byte, the 4th is a repeat count. We count
+ down from 4 instead *of counting up because
+ testing for non-zero is faster */
+ if (--bd->writeRunCountdown) {
+ if (xcurrent != previous)
+ bd->writeRunCountdown = 4;
+ } else {
+ /* We have a repeated run, this byte
+ * indicates the count */
+ bd->writeCopies = xcurrent;
+ xcurrent = previous;
+ bd->writeRunCountdown = 5;
+ /* Sometimes there are just 3 bytes
+ * (run length 0) */
+ if (!bd->writeCopies)
+ goto decode_next_byte;
+ /* Subtract the 1 copy we'd output
+ * anyway to get extras */
+ --bd->writeCopies;
+ }
+ }
+ /* Decompression of this block completed successfully */
+ bd->writeCRC = ~bd->writeCRC;
+ bd->totalCRC = ((bd->totalCRC << 1) |
+ (bd->totalCRC >> 31)) ^ bd->writeCRC;
+ /* If this block had a CRC error, force file level CRC error. */
+ if (bd->writeCRC != bd->headerCRC) {
+ bd->totalCRC = bd->headerCRC+1;
+ return RETVAL_LAST_BLOCK;
+ }
+ }
+
+ /* Refill the intermediate buffer by Huffman-decoding next
+ * block of input */
+ /* (previous is just a convenient unused temp variable here) */
+ previous = get_next_block(bd);
+ if (previous) {
+ bd->writeCount = previous;
+ return (previous != RETVAL_LAST_BLOCK) ? previous : gotcount;
+ }
+ bd->writeCRC = 0xffffffffUL;
+ pos = bd->writePos;
+ xcurrent = bd->writeCurrent;
+ goto decode_next_byte;
+}
+
+static int nofill(void *buf, unsigned int len)
+{
+ return -1;
+}
+
+/* Allocate the structure, read file header. If in_fd ==-1, inbuf must contain
+ a complete bunzip file (len bytes long). If in_fd!=-1, inbuf and len are
+ ignored, and data is read from file handle into temporary buffer. */
+static int start_bunzip(struct bunzip_data **bdp, void *inbuf, int len,
+ int (*fill)(void*, unsigned int))
+{
+ struct bunzip_data *bd;
+ unsigned int i, j, c;
+ const unsigned int BZh0 =
+ (((unsigned int)'B') << 24)+(((unsigned int)'Z') << 16)
+ +(((unsigned int)'h') << 8)+(unsigned int)'0';
+
+ /* Figure out how much data to allocate */
+ i = sizeof(struct bunzip_data);
+
+ /* Allocate bunzip_data. Most fields initialize to zero. */
+ bd = *bdp = malloc(i);
+ if (!bd)
+ return RETVAL_OUT_OF_MEMORY;
+ memset(bd, 0, sizeof(struct bunzip_data));
+ /* Setup input buffer */
+ bd->inbuf = inbuf;
+ bd->inbufCount = len;
+ if (fill != NULL)
+ bd->fill = fill;
+ else
+ bd->fill = nofill;
+
+ /* Init the CRC32 table (big endian) */
+ for (i = 0; i < 256; i++) {
+ c = i << 24;
+ for (j = 8; j; j--)
+ c = c&0x80000000 ? (c << 1)^0x04c11db7 : (c << 1);
+ bd->crc32Table[i] = c;
+ }
+
+ /* Ensure that file starts with "BZh['1'-'9']." */
+ i = get_bits(bd, 32);
+ if (((unsigned int)(i-BZh0-1)) >= 9)
+ return RETVAL_NOT_BZIP_DATA;
+
+ /* Fourth byte (ascii '1'-'9'), indicates block size in units of 100k of
+ uncompressed data. Allocate intermediate buffer for block. */
+ bd->dbufSize = 100000*(i-BZh0);
+
+ bd->dbuf = malloc(bd->dbufSize * sizeof(int));
+ if (!bd->dbuf)
+ return RETVAL_OUT_OF_MEMORY;
+ return RETVAL_OK;
+}
+
+/* Example usage: decompress src_fd to dst_fd. (Stops at end of bzip2 data,
+ not end of file.) */
+int bunzip2(unsigned char *buf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *outbuf,
+ int *pos,
+ void(*error)(char *x))
+{
+ struct bunzip_data *bd;
+ int i = -1;
+ unsigned char *inbuf;
+
+ if (flush)
+ outbuf = malloc(BZIP2_IOBUF_SIZE);
+
+ if (!outbuf) {
+ error("Could not allocate output bufer");
+ return RETVAL_OUT_OF_MEMORY;
+ }
+ if (buf)
+ inbuf = buf;
+ else
+ inbuf = malloc(BZIP2_IOBUF_SIZE);
+ if (!inbuf) {
+ error("Could not allocate input bufer");
+ i = RETVAL_OUT_OF_MEMORY;
+ goto exit_0;
+ }
+ i = start_bunzip(&bd, inbuf, len, fill);
+ if (!i) {
+ for (;;) {
+ i = read_bunzip(bd, outbuf, BZIP2_IOBUF_SIZE);
+ if (i <= 0)
+ break;
+ if (!flush)
+ outbuf += i;
+ else
+ if (i != flush(outbuf, i)) {
+ i = RETVAL_UNEXPECTED_OUTPUT_EOF;
+ break;
+ }
+ }
+ }
+ /* Check CRC and release memory */
+ if (i == RETVAL_LAST_BLOCK) {
+ if (bd->headerCRC != bd->totalCRC)
+ error("Data integrity error when decompressing.");
+ else
+ i = RETVAL_OK;
+ } else if (i == RETVAL_UNEXPECTED_OUTPUT_EOF) {
+ error("Compressed file ends unexpectedly");
+ }
+ if (!bd)
+ goto exit_1;
+ if (bd->dbuf)
+ free(bd->dbuf);
+ if (pos)
+ *pos = bd->inbufPos;
+ free(bd);
+exit_1:
+ if (!buf)
+ free(inbuf);
+exit_0:
+ if (flush)
+ free(outbuf);
+ return i;
+}
+
+#ifdef PREBOOT
+STATIC int INIT decompress(unsigned char *buf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *outbuf,
+ int *pos,
+ void(*error)(char *x))
+{
+ return bunzip2(buf, len - 4, fill, flush, outbuf, pos, error);
+}
+#endif
diff --git a/lib/decompress_inflate.c b/lib/decompress_inflate.c
new file mode 100644
index 0000000000..d246d4dc7e
--- /dev/null
+++ b/lib/decompress_inflate.c
@@ -0,0 +1,183 @@
+#ifdef STATIC
+/* Pre-boot environment: included */
+
+/* prevent inclusion of _LINUX_KERNEL_H in pre-boot environment: lots
+ * errors about console_printk etc... on ARM */
+#define _LINUX_KERNEL_H
+
+#include "zlib_inflate/inftrees.c"
+#include "zlib_inflate/inffast.c"
+#include "zlib_inflate/inflate.c"
+
+#else /* STATIC */
+/* initramfs et al: linked */
+
+#include <linux/zutil.h>
+#include <common.h>
+#include <malloc.h>
+
+#include "zlib_inflate/inftrees.h"
+#include "zlib_inflate/inffast.h"
+#include "zlib_inflate/inflate.h"
+
+#include "zlib_inflate/infutil.h"
+
+#endif /* STATIC */
+
+#define GZIP_IOBUF_SIZE (16*1024)
+
+static int nofill(void *buffer, unsigned int len)
+{
+ return -1;
+}
+
+/* Included from initramfs et al code */
+int gunzip(unsigned char *buf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *out_buf,
+ int *pos,
+ void(*error)(char *x)) {
+ u8 *zbuf;
+ struct z_stream_s *strm;
+ int rc;
+ size_t out_len;
+
+ rc = -1;
+ if (flush) {
+ out_len = 0x8000; /* 32 K */
+ out_buf = malloc(out_len);
+ } else {
+ out_len = 0x7fffffff; /* no limit */
+ }
+ if (!out_buf) {
+ error("Out of memory while allocating output buffer");
+ goto gunzip_nomem1;
+ }
+
+ if (buf)
+ zbuf = buf;
+ else {
+ zbuf = malloc(GZIP_IOBUF_SIZE);
+ len = 0;
+ }
+ if (!zbuf) {
+ error("Out of memory while allocating input buffer");
+ goto gunzip_nomem2;
+ }
+
+ strm = malloc(sizeof(*strm));
+ if (strm == NULL) {
+ error("Out of memory while allocating z_stream");
+ goto gunzip_nomem3;
+ }
+
+ strm->workspace = malloc(flush ? zlib_inflate_workspacesize() :
+ sizeof(struct inflate_state));
+ if (strm->workspace == NULL) {
+ error("Out of memory while allocating workspace");
+ goto gunzip_nomem4;
+ }
+
+ if (!fill)
+ fill = nofill;
+
+ if (len == 0)
+ len = fill(zbuf, GZIP_IOBUF_SIZE);
+
+ /* verify the gzip header */
+ if (len < 10 ||
+ zbuf[0] != 0x1f || zbuf[1] != 0x8b || zbuf[2] != 0x08) {
+ if (pos)
+ *pos = 0;
+ error("Not a gzip file");
+ goto gunzip_5;
+ }
+
+ /* skip over gzip header (1f,8b,08... 10 bytes total +
+ * possible asciz filename)
+ */
+ strm->next_in = zbuf + 10;
+ strm->avail_in = len - 10;
+ /* skip over asciz filename */
+ if (zbuf[3] & 0x8) {
+ do {
+ /*
+ * If the filename doesn't fit into the buffer,
+ * the file is very probably corrupt. Don't try
+ * to read more data.
+ */
+ if (strm->avail_in == 0) {
+ error("header error");
+ goto gunzip_5;
+ }
+ --strm->avail_in;
+ } while (*strm->next_in++);
+ }
+
+ strm->next_out = out_buf;
+ strm->avail_out = out_len;
+
+ rc = zlib_inflateInit2(strm, -MAX_WBITS);
+
+ if (!flush) {
+ WS(strm)->inflate_state.wsize = 0;
+ WS(strm)->inflate_state.window = NULL;
+ }
+
+ while (rc == Z_OK) {
+ if (strm->avail_in == 0) {
+ /* TODO: handle case where both pos and fill are set */
+ len = fill(zbuf, GZIP_IOBUF_SIZE);
+ if (len < 0) {
+ rc = -1;
+ error("read error");
+ break;
+ }
+ strm->next_in = zbuf;
+ strm->avail_in = len;
+ }
+ rc = zlib_inflate(strm, 0);
+
+ /* Write any data generated */
+ if (flush && strm->next_out > out_buf) {
+ int l = strm->next_out - out_buf;
+ if (l != flush(out_buf, l)) {
+ rc = -1;
+ error("write error");
+ break;
+ }
+ strm->next_out = out_buf;
+ strm->avail_out = out_len;
+ }
+
+ /* after Z_FINISH, only Z_STREAM_END is "we unpacked it all" */
+ if (rc == Z_STREAM_END) {
+ rc = 0;
+ break;
+ } else if (rc != Z_OK) {
+ error("uncompression error");
+ rc = -1;
+ }
+ }
+
+ zlib_inflateEnd(strm);
+ if (pos)
+ /* add + 8 to skip over trailer */
+ *pos = strm->next_in - zbuf+8;
+
+gunzip_5:
+ free(strm->workspace);
+gunzip_nomem4:
+ free(strm);
+gunzip_nomem3:
+ if (!buf)
+ free(zbuf);
+gunzip_nomem2:
+ if (flush)
+ free(out_buf);
+gunzip_nomem1:
+ return rc; /* returns Z_OK (0) if successful */
+}
+
+#define decompress gunzip
diff --git a/lib/decompress_unlzo.c b/lib/decompress_unlzo.c
index 0ae3d4d049..000bd704c3 100644
--- a/lib/decompress_unlzo.c
+++ b/lib/decompress_unlzo.c
@@ -106,7 +106,7 @@ static inline int parse_header(u8 *input, int *skip, int in_len)
return 1;
}
-static inline int __unlzo(u8 *input, int in_len,
+int decompress_unlzo(u8 *input, int in_len,
int (*fill) (void *, unsigned int),
int (*flush) (void *, unsigned int),
u8 *output, int *posp,
@@ -284,28 +284,3 @@ exit_1:
exit:
return ret;
}
-
-static int in_fd;
-static int out_fd;
-
-static int unlzo_fill(void *buf, unsigned int len)
-{
- return read(in_fd, buf, len);
-}
-
-static int unlzo_flush(void *buf, unsigned int len)
-{
- return write(out_fd, buf, len);
-}
-
-static void unlzo_error(char *s)
-{
- printf("%s\n", s);
-}
-
-int unlzo(int _in_fd, int _out_fd, int *dest_len)
-{
- in_fd = _in_fd;
- out_fd = _out_fd;
- return __unlzo(NULL, 0, unlzo_fill, unlzo_flush, NULL, NULL, unlzo_error);
-}
diff --git a/lib/gunzip.c b/lib/gunzip.c
deleted file mode 100644
index c41568afd6..0000000000
--- a/lib/gunzip.c
+++ /dev/null
@@ -1,85 +0,0 @@
-#include <common.h>
-#include <zlib.h>
-#include <malloc.h>
-
-#define ZALLOC_ALIGNMENT 16
-
-static void *zalloc(void *x, unsigned items, unsigned size)
-{
- void *p;
-
- size *= items;
- size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
-
- p = malloc (size);
-
- return (p);
-}
-
-static void zfree(void *x, void *addr, unsigned nb)
-{
- free (addr);
-}
-
-#define HEAD_CRC 2
-#define EXTRA_FIELD 4
-#define ORIG_NAME 8
-#define COMMENT 0x10
-#define RESERVED 0xe0
-
-#define DEFLATED 8
-
-int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
-{
- z_stream s;
- int r, i, flags;
-
- /* skip header */
- i = 10;
- flags = src[3];
- if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
- puts ("Error: Bad gzipped data\n");
- return (-1);
- }
- if ((flags & EXTRA_FIELD) != 0)
- i = 12 + src[10] + (src[11] << 8);
- if ((flags & ORIG_NAME) != 0)
- while (src[i++] != 0)
- ;
- if ((flags & COMMENT) != 0)
- while (src[i++] != 0)
- ;
- if ((flags & HEAD_CRC) != 0)
- i += 2;
- if (i >= *lenp) {
- puts ("Error: gunzip out of data in header\n");
- return (-1);
- }
-
- s.zalloc = zalloc;
- s.zfree = zfree;
-#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
- s.outcb = (cb_func)WATCHDOG_RESET;
-#else
- s.outcb = Z_NULL;
-#endif /* CONFIG_HW_WATCHDOG */
-
- r = inflateInit2(&s, -MAX_WBITS);
- if (r != Z_OK) {
- printf ("Error: inflateInit2() returned %d\n", r);
- return (-1);
- }
- s.next_in = src + i;
- s.avail_in = *lenp - i;
- s.next_out = dst;
- s.avail_out = dstlen;
- r = inflate(&s, Z_FINISH);
- if (r != Z_OK && r != Z_STREAM_END) {
- printf ("Error: inflate() returned %d\n", r);
- return (-1);
- }
- *lenp = s.next_out - (unsigned char *) dst;
- inflateEnd(&s);
-
- return (0);
-}
diff --git a/lib/lzo/Kconfig b/lib/lzo/Kconfig
index 4016785838..03c3350897 100644
--- a/lib/lzo/Kconfig
+++ b/lib/lzo/Kconfig
@@ -1,4 +1,5 @@
config LZO_DECOMPRESS
+ bool "include lzo uncompression support"
bool
config LZO_COMPRESS
diff --git a/lib/uncompress.c b/lib/uncompress.c
new file mode 100644
index 0000000000..80982f34d6
--- /dev/null
+++ b/lib/uncompress.c
@@ -0,0 +1,159 @@
+/*
+ * uncompress.c - uncompress files
+ *
+ * Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <common.h>
+#include <uncompress.h>
+#include <bunzip2.h>
+#include <gunzip.h>
+#include <lzo.h>
+#include <errno.h>
+#include <filetype.h>
+#include <malloc.h>
+#include <fs.h>
+
+static void *uncompress_buf;
+static unsigned int uncompress_size;
+
+void uncompress_err_stdout(char *x)
+{
+ printf("%s\n", x);
+}
+
+static int (*uncompress_fill_fn)(void*, unsigned int);
+
+static int uncompress_fill(void *buf, unsigned int len)
+{
+ int total = 0;
+
+ if (uncompress_size) {
+ int now = min(len, uncompress_size);
+
+ memcpy(buf, uncompress_buf, now);
+ uncompress_size -= now;
+ len -= now;
+ total = now;
+ buf += now;
+ }
+
+ if (len) {
+ int ret = uncompress_fill_fn(buf, len);
+ if (ret < 0)
+ return ret;
+ total += ret;
+ }
+
+ return total;
+}
+
+int uncompress(unsigned char *inbuf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *output,
+ int *pos,
+ void(*error_fn)(char *x))
+{
+ enum filetype ft;
+ int (*compfn)(unsigned char *inbuf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *output,
+ int *pos,
+ void(*error)(char *x));
+ int ret;
+ char *err;
+
+ BUG_ON(uncompress_size);
+
+ if (inbuf) {
+ ft = file_detect_type(inbuf);
+ } else {
+ if (!fill)
+ return -EINVAL;
+
+ uncompress_fill_fn = fill;
+ uncompress_buf = xzalloc(32);
+ uncompress_size = 32;
+
+ ret = fill(uncompress_buf, 32);
+ if (ret < 0)
+ goto err;
+
+ ft = file_detect_type(uncompress_buf);
+ }
+
+ switch (ft) {
+#ifdef CONFIG_BZLIB
+ case filetype_bzip2:
+ compfn = bunzip2;
+ break;
+#endif
+#ifdef CONFIG_ZLIB
+ case filetype_gzip:
+ compfn = gunzip;
+ break;
+#endif
+#ifdef CONFIG_LZO_DECOMPRESS
+ case filetype_lzo_compressed:
+ compfn = decompress_unlzo;
+ break;
+#endif
+ default:
+ err = asprintf("cannot handle filetype %s", file_type_to_string(ft));
+ error_fn(err);
+ free(err);
+ ret = -ENOSYS;
+ goto err;
+ }
+
+ ret = compfn(inbuf, len, fill ? uncompress_fill : NULL,
+ flush, output, pos, error_fn);
+err:
+ free(uncompress_buf);
+ uncompress_size = 0;
+
+ return ret;
+}
+
+static int uncompress_infd, uncompress_outfd;
+
+static int fill_fd(void *buf, unsigned int len)
+{
+ return read(uncompress_infd, buf, len);
+}
+
+static int flush_fd(void *buf, unsigned int len)
+{
+ return write(uncompress_outfd, buf, len);
+}
+
+int uncompress_fd_to_fd(int infd, int outfd,
+ void(*error_fn)(char *x))
+{
+ uncompress_infd = infd;
+ uncompress_outfd = outfd;
+
+ return uncompress(NULL, 0,
+ fill_fd,
+ flush_fd,
+ NULL,
+ NULL,
+ error_fn);
+}
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 54e162f063..4165f97485 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -56,7 +56,6 @@ long simple_strtol(const char *cp,char **endp,unsigned int base)
}
EXPORT_SYMBOL(simple_strtol);
-#ifdef CFG_64BIT_STRTOUL
unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int base)
{
unsigned long long result = 0, value;
@@ -84,7 +83,6 @@ unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int ba
*endp = (char *) cp;
return result;
}
-#endif /* CFG_64BIT_STRTOUL */
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
diff --git a/lib/zlib.c b/lib/zlib.c
deleted file mode 100644
index 699a6f2c23..0000000000
--- a/lib/zlib.c
+++ /dev/null
@@ -1,2158 +0,0 @@
-/*
- * This file is derived from various .h and .c files from the zlib-0.95
- * distribution by Jean-loup Gailly and Mark Adler, with some additions
- * by Paul Mackerras to aid in implementing Deflate compression and
- * decompression for PPP packets. See zlib.h for conditions of
- * distribution and use.
- *
- * Changes that have been made include:
- * - changed functions not used outside this file to "local"
- * - added minCompression parameter to deflateInit2
- * - added Z_PACKET_FLUSH (see zlib.h for details)
- * - added inflateIncomp
- */
-
-/*+++++*/
-/* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* From: zutil.h,v 1.9 1995/05/03 17:27:12 jloup Exp */
-
-#define _Z_UTIL_H
-
-#include "zlib.h"
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-#define FAR
-
-typedef unsigned char uch;
-typedef uch FAR uchf;
-typedef unsigned short ush;
-typedef ush FAR ushf;
-typedef unsigned long ulg;
-
-extern char *z_errmsg[]; /* indexed by 1-zlib_error */
-
-#define ERR_RETURN(strm,err) return (strm->msg=z_errmsg[1-err], err)
-/* To be used only when the state is known to be valid */
-
-#ifndef NULL
-#define NULL ((void *) 0)
-#endif
-
- /* common constants */
-
-#define DEFLATED 8
-
-#ifndef DEF_WBITS
-# define DEF_WBITS MAX_WBITS
-#endif
-/* default windowBits for decompression. MAX_WBITS is for compression only */
-
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-/* default memLevel */
-
-#define STORED_BLOCK 0
-#define STATIC_TREES 1
-#define DYN_TREES 2
-/* The three kinds of block type */
-
-#define MIN_MATCH 3
-#define MAX_MATCH 258
-/* The minimum and maximum match lengths */
-
- /* functions */
-
-#include <linux/string.h>
-#define zmemcpy memcpy
-#define zmemzero(dest, len) memset(dest, 0, len)
-
-/* Diagnostic functions */
-#ifdef DEBUG_ZLIB
-# include <stdio.h>
-# ifndef verbose
-# define verbose 0
-# endif
-# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-
-typedef uLong (*check_func) OF((uLong check, Bytef *buf, uInt len));
-
-/* voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); */
-/* void zcfree OF((voidpf opaque, voidpf ptr)); */
-
-#define ZALLOC(strm, items, size) \
- (*((strm)->zalloc))((strm)->opaque, (items), (size))
-#define ZFREE(strm, addr, size) \
- (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), (size))
-#define TRY_FREE(s, p, n) {if (p) ZFREE(s, p, n);}
-
-/* deflate.h -- internal compression state
- * Copyright (C) 1995 Jean-loup Gailly
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/*+++++*/
-/* infblock.h -- header to use infblock.c
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-struct inflate_blocks_state;
-typedef struct inflate_blocks_state FAR inflate_blocks_statef;
-
-local inflate_blocks_statef * inflate_blocks_new OF((
- z_stream *z,
- check_func c, /* check function */
- uInt w)); /* window size */
-
-local int inflate_blocks OF((
- inflate_blocks_statef *,
- z_stream *,
- int)); /* initial return code */
-
-local void inflate_blocks_reset OF((
- inflate_blocks_statef *,
- z_stream *,
- uLongf *)); /* check value on output */
-
-local int inflate_blocks_free OF((
- inflate_blocks_statef *,
- z_stream *,
- uLongf *)); /* check value on output */
-
-local int inflate_addhistory OF((
- inflate_blocks_statef *,
- z_stream *));
-
-local int inflate_packet_flush OF((
- inflate_blocks_statef *));
-
-/*+++++*/
-/* inftrees.h -- header to use inftrees.c
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* Huffman code lookup table entry--this entry is four bytes for machines
- that have 16-bit pointers (e.g. PC's in the small or medium model). */
-
-typedef struct inflate_huft_s FAR inflate_huft;
-
-struct inflate_huft_s {
- union {
- struct {
- Byte Exop; /* number of extra bits or operation */
- Byte Bits; /* number of bits in this code or subcode */
- } what;
- uInt Nalloc; /* number of these allocated here */
- Bytef *pad; /* pad structure to a power of 2 (4 bytes for */
- } word; /* 16-bit, 8 bytes for 32-bit machines) */
- union {
- uInt Base; /* literal, length base, or distance base */
- inflate_huft *Next; /* pointer to next level of table */
- } more;
-};
-
-#ifdef DEBUG_ZLIB
- local uInt inflate_hufts;
-#endif
-
-local int inflate_trees_bits OF((
- uIntf *, /* 19 code lengths */
- uIntf *, /* bits tree desired/actual depth */
- inflate_huft * FAR *, /* bits tree result */
- z_stream *)); /* for zalloc, zfree functions */
-
-local int inflate_trees_dynamic OF((
- uInt, /* number of literal/length codes */
- uInt, /* number of distance codes */
- uIntf *, /* that many (total) code lengths */
- uIntf *, /* literal desired/actual bit depth */
- uIntf *, /* distance desired/actual bit depth */
- inflate_huft * FAR *, /* literal/length tree result */
- inflate_huft * FAR *, /* distance tree result */
- z_stream *)); /* for zalloc, zfree functions */
-
-local int inflate_trees_fixed OF((
- uIntf *, /* literal desired/actual bit depth */
- uIntf *, /* distance desired/actual bit depth */
- inflate_huft * FAR *, /* literal/length tree result */
- inflate_huft * FAR *)); /* distance tree result */
-
-local int inflate_trees_free OF((
- inflate_huft *, /* tables to free */
- z_stream *)); /* for zfree function */
-
-
-/*+++++*/
-/* infcodes.h -- header to use infcodes.c
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-struct inflate_codes_state;
-typedef struct inflate_codes_state FAR inflate_codes_statef;
-
-local inflate_codes_statef *inflate_codes_new OF((
- uInt, uInt,
- inflate_huft *, inflate_huft *,
- z_stream *));
-
-local int inflate_codes OF((
- inflate_blocks_statef *,
- z_stream *,
- int));
-
-local void inflate_codes_free OF((
- inflate_codes_statef *,
- z_stream *));
-
-
-/*+++++*/
-/* inflate.c -- zlib interface to inflate modules
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* inflate private state */
-struct internal_state {
-
- /* mode */
- enum {
- METHOD, /* waiting for method byte */
- FLAG, /* waiting for flag byte */
- BLOCKS, /* decompressing blocks */
- CHECK4, /* four check bytes to go */
- CHECK3, /* three check bytes to go */
- CHECK2, /* two check bytes to go */
- CHECK1, /* one check byte to go */
- DONE, /* finished check, done */
- BAD} /* got an error--stay here */
- mode; /* current inflate mode */
-
- /* mode dependent information */
- union {
- uInt method; /* if FLAGS, method byte */
- struct {
- uLong was; /* computed check value */
- uLong need; /* stream check value */
- } check; /* if CHECK, check values to compare */
- uInt marker; /* if BAD, inflateSync's marker bytes count */
- } sub; /* submode */
-
- /* mode independent information */
- int nowrap; /* flag for no wrapper */
- uInt wbits; /* log2(window size) (8..15, defaults to 15) */
- inflate_blocks_statef
- *blocks; /* current inflate_blocks state */
-
-};
-
-
-int inflateReset(z)
-z_stream *z;
-{
- uLong c;
-
- if (z == Z_NULL || z->state == Z_NULL)
- return Z_STREAM_ERROR;
- z->total_in = z->total_out = 0;
- z->msg = Z_NULL;
- z->state->mode = z->state->nowrap ? BLOCKS : METHOD;
- inflate_blocks_reset(z->state->blocks, z, &c);
- Trace((stderr, "inflate: reset\n"));
- return Z_OK;
-}
-
-
-int inflateEnd(z)
-z_stream *z;
-{
- uLong c;
-
- if (z == Z_NULL || z->state == Z_NULL || z->zfree == Z_NULL)
- return Z_STREAM_ERROR;
- if (z->state->blocks != Z_NULL)
- inflate_blocks_free(z->state->blocks, z, &c);
- ZFREE(z, z->state, sizeof(struct internal_state));
- z->state = Z_NULL;
- Trace((stderr, "inflate: end\n"));
- return Z_OK;
-}
-
-
-int inflateInit2(z, w)
-z_stream *z;
-int w;
-{
- /* initialize state */
- if (z == Z_NULL)
- return Z_STREAM_ERROR;
-/* if (z->zalloc == Z_NULL) z->zalloc = zcalloc; */
-/* if (z->zfree == Z_NULL) z->zfree = zcfree; */
- if ((z->state = (struct internal_state FAR *)
- ZALLOC(z,1,sizeof(struct internal_state))) == Z_NULL)
- return Z_MEM_ERROR;
- z->state->blocks = Z_NULL;
-
- /* handle undocumented nowrap option (no zlib header or check) */
- z->state->nowrap = 0;
- if (w < 0)
- {
- w = - w;
- z->state->nowrap = 1;
- }
-
- /* set window size */
- if (w < 8 || w > 15)
- {
- inflateEnd(z);
- return Z_STREAM_ERROR;
- }
- z->state->wbits = (uInt)w;
-
- /* create inflate_blocks state */
- if ((z->state->blocks =
- inflate_blocks_new(z, z->state->nowrap ? Z_NULL : adler32, 1 << w))
- == Z_NULL)
- {
- inflateEnd(z);
- return Z_MEM_ERROR;
- }
- Trace((stderr, "inflate: allocated\n"));
-
- /* reset state */
- inflateReset(z);
- return Z_OK;
-}
-
-
-int inflateInit(z)
-z_stream *z;
-{
- return inflateInit2(z, DEF_WBITS);
-}
-
-
-#define NEEDBYTE {if(z->avail_in==0)goto empty;r=Z_OK;}
-#define NEXTBYTE (z->avail_in--,z->total_in++,*z->next_in++)
-
-int inflate(z, f)
-z_stream *z;
-int f;
-{
- int r;
- uInt b;
-
- if (z == Z_NULL || z->next_in == Z_NULL)
- return Z_STREAM_ERROR;
- r = Z_BUF_ERROR;
- while (1) switch (z->state->mode)
- {
- case METHOD:
- NEEDBYTE
- if (((z->state->sub.method = NEXTBYTE) & 0xf) != DEFLATED)
- {
- z->state->mode = BAD;
- z->msg = "unknown compression method";
- z->state->sub.marker = 5; /* can't try inflateSync */
- break;
- }
- if ((z->state->sub.method >> 4) + 8 > z->state->wbits)
- {
- z->state->mode = BAD;
- z->msg = "invalid window size";
- z->state->sub.marker = 5; /* can't try inflateSync */
- break;
- }
- z->state->mode = FLAG;
- case FLAG:
- NEEDBYTE
- if ((b = NEXTBYTE) & 0x20)
- {
- z->state->mode = BAD;
- z->msg = "invalid reserved bit";
- z->state->sub.marker = 5; /* can't try inflateSync */
- break;
- }
- if (((z->state->sub.method << 8) + b) % 31)
- {
- z->state->mode = BAD;
- z->msg = "incorrect header check";
- z->state->sub.marker = 5; /* can't try inflateSync */
- break;
- }
- Trace((stderr, "inflate: zlib header ok\n"));
- z->state->mode = BLOCKS;
- case BLOCKS:
- r = inflate_blocks(z->state->blocks, z, r);
- if (f == Z_PACKET_FLUSH && z->avail_in == 0 && z->avail_out != 0)
- r = inflate_packet_flush(z->state->blocks);
- if (r == Z_DATA_ERROR)
- {
- z->state->mode = BAD;
- z->state->sub.marker = 0; /* can try inflateSync */
- break;
- }
- if (r != Z_STREAM_END)
- return r;
- r = Z_OK;
- inflate_blocks_reset(z->state->blocks, z, &z->state->sub.check.was);
- if (z->state->nowrap)
- {
- z->state->mode = DONE;
- break;
- }
- z->state->mode = CHECK4;
- case CHECK4:
- NEEDBYTE
- z->state->sub.check.need = (uLong)NEXTBYTE << 24;
- z->state->mode = CHECK3;
- case CHECK3:
- NEEDBYTE
- z->state->sub.check.need += (uLong)NEXTBYTE << 16;
- z->state->mode = CHECK2;
- case CHECK2:
- NEEDBYTE
- z->state->sub.check.need += (uLong)NEXTBYTE << 8;
- z->state->mode = CHECK1;
- case CHECK1:
- NEEDBYTE
- z->state->sub.check.need += (uLong)NEXTBYTE;
-
- if (z->state->sub.check.was != z->state->sub.check.need)
- {
- z->state->mode = BAD;
- z->msg = "incorrect data check";
- z->state->sub.marker = 5; /* can't try inflateSync */
- break;
- }
- Trace((stderr, "inflate: zlib check ok\n"));
- z->state->mode = DONE;
- case DONE:
- return Z_STREAM_END;
- case BAD:
- return Z_DATA_ERROR;
- default:
- return Z_STREAM_ERROR;
- }
-
- empty:
- if (f != Z_PACKET_FLUSH)
- return r;
- z->state->mode = BAD;
- z->state->sub.marker = 0; /* can try inflateSync */
- return Z_DATA_ERROR;
-}
-
-/*
- * This subroutine adds the data at next_in/avail_in to the output history
- * without performing any output. The output buffer must be "caught up";
- * i.e. no pending output (hence s->read equals s->write), and the state must
- * be BLOCKS (i.e. we should be willing to see the start of a series of
- * BLOCKS). On exit, the output will also be caught up, and the checksum
- * will have been updated if need be.
- */
-
-int inflateIncomp(z)
-z_stream *z;
-{
- if (z->state->mode != BLOCKS)
- return Z_DATA_ERROR;
- return inflate_addhistory(z->state->blocks, z);
-}
-
-
-int inflateSync(z)
-z_stream *z;
-{
- uInt n; /* number of bytes to look at */
- Bytef *p; /* pointer to bytes */
- uInt m; /* number of marker bytes found in a row */
- uLong r, w; /* temporaries to save total_in and total_out */
-
- /* set up */
- if (z == Z_NULL || z->state == Z_NULL)
- return Z_STREAM_ERROR;
- if (z->state->mode != BAD)
- {
- z->state->mode = BAD;
- z->state->sub.marker = 0;
- }
- if ((n = z->avail_in) == 0)
- return Z_BUF_ERROR;
- p = z->next_in;
- m = z->state->sub.marker;
-
- /* search */
- while (n && m < 4)
- {
- if (*p == (Byte)(m < 2 ? 0 : 0xff))
- m++;
- else if (*p)
- m = 0;
- else
- m = 4 - m;
- p++, n--;
- }
-
- /* restore */
- z->total_in += p - z->next_in;
- z->next_in = p;
- z->avail_in = n;
- z->state->sub.marker = m;
-
- /* return no joy or set up to restart on a new block */
- if (m != 4)
- return Z_DATA_ERROR;
- r = z->total_in; w = z->total_out;
- inflateReset(z);
- z->total_in = r; z->total_out = w;
- z->state->mode = BLOCKS;
- return Z_OK;
-}
-
-#undef NEEDBYTE
-#undef NEXTBYTE
-
-/*+++++*/
-/* infutil.h -- types and macros common to blocks and codes
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* inflate blocks semi-private state */
-struct inflate_blocks_state {
-
- /* mode */
- enum {
- TYPE, /* get type bits (3, including end bit) */
- LENS, /* get lengths for stored */
- STORED, /* processing stored block */
- TABLE, /* get table lengths */
- BTREE, /* get bit lengths tree for a dynamic block */
- DTREE, /* get length, distance trees for a dynamic block */
- CODES, /* processing fixed or dynamic block */
- DRY, /* output remaining window bytes */
- DONEB, /* finished last block, done */
- BADB} /* got a data error--stuck here */
- mode; /* current inflate_block mode */
-
- /* mode dependent information */
- union {
- uInt left; /* if STORED, bytes left to copy */
- struct {
- uInt table; /* table lengths (14 bits) */
- uInt index; /* index into blens (or border) */
- uIntf *blens; /* bit lengths of codes */
- uInt bb; /* bit length tree depth */
- inflate_huft *tb; /* bit length decoding tree */
- int nblens; /* # elements allocated at blens */
- } trees; /* if DTREE, decoding info for trees */
- struct {
- inflate_huft *tl, *td; /* trees to free */
- inflate_codes_statef
- *codes;
- } decode; /* if CODES, current state */
- } sub; /* submode */
- uInt last; /* true if this block is the last block */
-
- /* mode independent information */
- uInt bitk; /* bits in bit buffer */
- uLong bitb; /* bit buffer */
- Bytef *window; /* sliding window */
- Bytef *end; /* one byte after sliding window */
- Bytef *read; /* window read pointer */
- Bytef *write; /* window write pointer */
- check_func checkfn; /* check function */
- uLong check; /* check on output */
-
-};
-
-
-/* defines for inflate input/output */
-/* update pointers and return */
-#define UPDBITS {s->bitb=b;s->bitk=k;}
-#define UPDIN {z->avail_in=n;z->total_in+=p-z->next_in;z->next_in=p;}
-#define UPDOUT {s->write=q;}
-#define UPDATE {UPDBITS UPDIN UPDOUT}
-#define LEAVE {UPDATE return inflate_flush(s,z,r);}
-/* get bytes and bits */
-#define LOADIN {p=z->next_in;n=z->avail_in;b=s->bitb;k=s->bitk;}
-#define NEEDBYTE {if(n)r=Z_OK;else LEAVE}
-#define NEXTBYTE (n--,*p++)
-#define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
-#define DUMPBITS(j) {b>>=(j);k-=(j);}
-/* output bytes */
-#define WAVAIL (q<s->read?s->read-q-1:s->end-q)
-#define LOADOUT {q=s->write;m=WAVAIL;}
-#define WRAP {if(q==s->end&&s->read!=s->window){q=s->window;m=WAVAIL;}}
-#define FLUSH {UPDOUT r=inflate_flush(s,z,r); LOADOUT}
-#define NEEDOUT {if(m==0){WRAP if(m==0){FLUSH WRAP if(m==0) LEAVE}}r=Z_OK;}
-#define OUTBYTE(a) {*q++=(Byte)(a);m--;}
-/* load local pointers */
-#define LOAD {LOADIN LOADOUT}
-
-/*
- * The IBM 150 firmware munges the data right after _etext[]. This
- * protects it. -- Cort
- */
-/* And'ing with mask[n] masks the lower n bits */
-local uInt inflate_mask[] = {
- 0x0000,
- 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
- 0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
-};
-
-/* copy as much as possible from the sliding window to the output area */
-local int inflate_flush OF((
- inflate_blocks_statef *,
- z_stream *,
- int));
-
-/*+++++*/
-/* inffast.h -- header to use inffast.c
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-local int inflate_fast OF((
- uInt,
- uInt,
- inflate_huft *,
- inflate_huft *,
- inflate_blocks_statef *,
- z_stream *));
-
-
-/*+++++*/
-/* infblock.c -- interpret and process block types to last block
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* Table for deflate from PKZIP's appnote.txt. */
-local uInt border[] = { /* Order of the bit length code lengths */
- 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
-/*
- Notes beyond the 1.93a appnote.txt:
-
- 1. Distance pointers never point before the beginning of the output
- stream.
- 2. Distance pointers can point back across blocks, up to 32k away.
- 3. There is an implied maximum of 7 bits for the bit length table and
- 15 bits for the actual data.
- 4. If only one code exists, then it is encoded using one bit. (Zero
- would be more efficient, but perhaps a little confusing.) If two
- codes exist, they are coded using one bit each (0 and 1).
- 5. There is no way of sending zero distance codes--a dummy must be
- sent if there are none. (History: a pre 2.0 version of PKZIP would
- store blocks with no distance codes, but this was discovered to be
- too harsh a criterion.) Valid only for 1.93a. 2.04c does allow
- zero distance codes, which is sent as one code of zero bits in
- length.
- 6. There are up to 286 literal/length codes. Code 256 represents the
- end-of-block. Note however that the static length tree defines
- 288 codes just to fill out the Huffman codes. Codes 286 and 287
- cannot be used though, since there is no length base or extra bits
- defined for them. Similarily, there are up to 30 distance codes.
- However, static trees define 32 codes (all 5 bits) to fill out the
- Huffman codes, but the last two had better not show up in the data.
- 7. Unzip can check dynamic Huffman blocks for complete code sets.
- The exception is that a single code would not be complete (see #4).
- 8. The five bits following the block type is really the number of
- literal codes sent minus 257.
- 9. Length codes 8,16,16 are interpreted as 13 length codes of 8 bits
- (1+6+6). Therefore, to output three times the length, you output
- three codes (1+1+1), whereas to output four times the same length,
- you only need two codes (1+3). Hmm.
- 10. In the tree reconstruction algorithm, Code = Code + Increment
- only if BitLength(i) is not zero. (Pretty obvious.)
- 11. Correction: 4 Bits: # of Bit Length codes - 4 (4 - 19)
- 12. Note: length code 284 can represent 227-258, but length code 285
- really is 258. The last length deserves its own, short code
- since it gets used a lot in very redundant files. The length
- 258 is special since 258 - 3 (the min match length) is 255.
- 13. The literal/length and distance code bit lengths are read as a
- single stream of lengths. It is possible (and advantageous) for
- a repeat code (16, 17, or 18) to go across the boundary between
- the two sets of lengths.
- */
-
-
-local void inflate_blocks_reset(s, z, c)
-inflate_blocks_statef *s;
-z_stream *z;
-uLongf *c;
-{
- if (s->checkfn != Z_NULL)
- *c = s->check;
- if (s->mode == BTREE || s->mode == DTREE)
- ZFREE(z, s->sub.trees.blens, s->sub.trees.nblens * sizeof(uInt));
- if (s->mode == CODES)
- {
- inflate_codes_free(s->sub.decode.codes, z);
- inflate_trees_free(s->sub.decode.td, z);
- inflate_trees_free(s->sub.decode.tl, z);
- }
- s->mode = TYPE;
- s->bitk = 0;
- s->bitb = 0;
- s->read = s->write = s->window;
- if (s->checkfn != Z_NULL)
- s->check = (*s->checkfn)(0L, Z_NULL, 0);
- if (z->outcb != Z_NULL)
- (*z->outcb)(Z_NULL, 0);
- Trace((stderr, "inflate: blocks reset\n"));
-}
-
-
-local inflate_blocks_statef *inflate_blocks_new(z, c, w)
-z_stream *z;
-check_func c;
-uInt w;
-{
- inflate_blocks_statef *s;
-
- if ((s = (inflate_blocks_statef *)ZALLOC
- (z,1,sizeof(struct inflate_blocks_state))) == Z_NULL)
- return s;
- if ((s->window = (Bytef *)ZALLOC(z, 1, w)) == Z_NULL)
- {
- ZFREE(z, s, sizeof(struct inflate_blocks_state));
- return Z_NULL;
- }
- s->end = s->window + w;
- s->checkfn = c;
- s->mode = TYPE;
- Trace((stderr, "inflate: blocks allocated\n"));
- inflate_blocks_reset(s, z, &s->check);
- return s;
-}
-
-
-local int inflate_blocks(s, z, r)
-inflate_blocks_statef *s;
-z_stream *z;
-int r;
-{
- uInt t; /* temporary storage */
- uLong b; /* bit buffer */
- uInt k; /* bits in bit buffer */
- Bytef *p; /* input data pointer */
- uInt n; /* bytes available there */
- Bytef *q; /* output window write pointer */
- uInt m; /* bytes to end of window or read pointer */
-
- /* copy input/output information to locals (UPDATE macro restores) */
- LOAD
-
- /* process input based on current state */
- while (1) switch (s->mode)
- {
- case TYPE:
- NEEDBITS(3)
- t = (uInt)b & 7;
- s->last = t & 1;
- switch (t >> 1)
- {
- case 0: /* stored */
- Trace((stderr, "inflate: stored block%s\n",
- s->last ? " (last)" : ""));
- DUMPBITS(3)
- t = k & 7; /* go to byte boundary */
- DUMPBITS(t)
- s->mode = LENS; /* get length of stored block */
- break;
- case 1: /* fixed */
- Trace((stderr, "inflate: fixed codes block%s\n",
- s->last ? " (last)" : ""));
- {
- uInt bl, bd;
- inflate_huft *tl, *td;
-
- inflate_trees_fixed(&bl, &bd, &tl, &td);
- s->sub.decode.codes = inflate_codes_new(bl, bd, tl, td, z);
- if (s->sub.decode.codes == Z_NULL)
- {
- r = Z_MEM_ERROR;
- LEAVE
- }
- s->sub.decode.tl = Z_NULL; /* don't try to free these */
- s->sub.decode.td = Z_NULL;
- }
- DUMPBITS(3)
- s->mode = CODES;
- break;
- case 2: /* dynamic */
- Trace((stderr, "inflate: dynamic codes block%s\n",
- s->last ? " (last)" : ""));
- DUMPBITS(3)
- s->mode = TABLE;
- break;
- case 3: /* illegal */
- DUMPBITS(3)
- s->mode = BADB;
- z->msg = "invalid block type";
- r = Z_DATA_ERROR;
- LEAVE
- }
- break;
- case LENS:
- NEEDBITS(32)
- if (((~b) >> 16) != (b & 0xffff))
- {
- s->mode = BADB;
- z->msg = "invalid stored block lengths";
- r = Z_DATA_ERROR;
- LEAVE
- }
- s->sub.left = (uInt)b & 0xffff;
- b = k = 0; /* dump bits */
- Tracev((stderr, "inflate: stored length %u\n", s->sub.left));
- s->mode = s->sub.left ? STORED : TYPE;
- break;
- case STORED:
- if (n == 0)
- LEAVE
- NEEDOUT
- t = s->sub.left;
- if (t > n) t = n;
- if (t > m) t = m;
- zmemcpy(q, p, t);
- p += t; n -= t;
- q += t; m -= t;
- if ((s->sub.left -= t) != 0)
- break;
- Tracev((stderr, "inflate: stored end, %lu total out\n",
- z->total_out + (q >= s->read ? q - s->read :
- (s->end - s->read) + (q - s->window))));
- s->mode = s->last ? DRY : TYPE;
- break;
- case TABLE:
- NEEDBITS(14)
- s->sub.trees.table = t = (uInt)b & 0x3fff;
-#ifndef PKZIP_BUG_WORKAROUND
- if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
- {
- s->mode = BADB;
- z->msg = "too many length or distance symbols";
- r = Z_DATA_ERROR;
- LEAVE
- }
-#endif
- t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
- if (t < 19)
- t = 19;
- if ((s->sub.trees.blens = (uIntf*)ZALLOC(z, t, sizeof(uInt))) == Z_NULL)
- {
- r = Z_MEM_ERROR;
- LEAVE
- }
- s->sub.trees.nblens = t;
- DUMPBITS(14)
- s->sub.trees.index = 0;
- Tracev((stderr, "inflate: table sizes ok\n"));
- s->mode = BTREE;
- case BTREE:
- while (s->sub.trees.index < 4 + (s->sub.trees.table >> 10))
- {
- NEEDBITS(3)
- s->sub.trees.blens[border[s->sub.trees.index++]] = (uInt)b & 7;
- DUMPBITS(3)
- }
- while (s->sub.trees.index < 19)
- s->sub.trees.blens[border[s->sub.trees.index++]] = 0;
- s->sub.trees.bb = 7;
- t = inflate_trees_bits(s->sub.trees.blens, &s->sub.trees.bb,
- &s->sub.trees.tb, z);
- if (t != Z_OK)
- {
- r = t;
- if (r == Z_DATA_ERROR)
- s->mode = BADB;
- LEAVE
- }
- s->sub.trees.index = 0;
- Tracev((stderr, "inflate: bits tree ok\n"));
- s->mode = DTREE;
- case DTREE:
- while (t = s->sub.trees.table,
- s->sub.trees.index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))
- {
- inflate_huft *h;
- uInt i, j, c;
-
- t = s->sub.trees.bb;
- NEEDBITS(t)
- h = s->sub.trees.tb + ((uInt)b & inflate_mask[t]);
- t = h->word.what.Bits;
- c = h->more.Base;
- if (c < 16)
- {
- DUMPBITS(t)
- s->sub.trees.blens[s->sub.trees.index++] = c;
- }
- else /* c == 16..18 */
- {
- i = c == 18 ? 7 : c - 14;
- j = c == 18 ? 11 : 3;
- NEEDBITS(t + i)
- DUMPBITS(t)
- j += (uInt)b & inflate_mask[i];
- DUMPBITS(i)
- i = s->sub.trees.index;
- t = s->sub.trees.table;
- if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
- (c == 16 && i < 1))
- {
- s->mode = BADB;
- z->msg = "invalid bit length repeat";
- r = Z_DATA_ERROR;
- LEAVE
- }
- c = c == 16 ? s->sub.trees.blens[i - 1] : 0;
- do {
- s->sub.trees.blens[i++] = c;
- } while (--j);
- s->sub.trees.index = i;
- }
- }
- inflate_trees_free(s->sub.trees.tb, z);
- s->sub.trees.tb = Z_NULL;
- {
- uInt bl, bd;
- inflate_huft *tl, *td;
- inflate_codes_statef *c;
-
- bl = 9; /* must be <= 9 for lookahead assumptions */
- bd = 6; /* must be <= 9 for lookahead assumptions */
- t = s->sub.trees.table;
- t = inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f),
- s->sub.trees.blens, &bl, &bd, &tl, &td, z);
- if (t != Z_OK)
- {
- if (t == (uInt)Z_DATA_ERROR)
- s->mode = BADB;
- r = t;
- LEAVE
- }
- Tracev((stderr, "inflate: trees ok\n"));
- if ((c = inflate_codes_new(bl, bd, tl, td, z)) == Z_NULL)
- {
- inflate_trees_free(td, z);
- inflate_trees_free(tl, z);
- r = Z_MEM_ERROR;
- LEAVE
- }
- ZFREE(z, s->sub.trees.blens, s->sub.trees.nblens * sizeof(uInt));
- s->sub.decode.codes = c;
- s->sub.decode.tl = tl;
- s->sub.decode.td = td;
- }
- s->mode = CODES;
- case CODES:
- UPDATE
- if ((r = inflate_codes(s, z, r)) != Z_STREAM_END)
- return inflate_flush(s, z, r);
- r = Z_OK;
- inflate_codes_free(s->sub.decode.codes, z);
- inflate_trees_free(s->sub.decode.td, z);
- inflate_trees_free(s->sub.decode.tl, z);
- LOAD
- Tracev((stderr, "inflate: codes end, %lu total out\n",
- z->total_out + (q >= s->read ? q - s->read :
- (s->end - s->read) + (q - s->window))));
- if (!s->last)
- {
- s->mode = TYPE;
- break;
- }
- if (k > 7) /* return unused byte, if any */
- {
- Assert(k < 16, "inflate_codes grabbed too many bytes")
- k -= 8;
- n++;
- p--; /* can always return one */
- }
- s->mode = DRY;
- case DRY:
- FLUSH
- if (s->read != s->write)
- LEAVE
- s->mode = DONEB;
- case DONEB:
- r = Z_STREAM_END;
- LEAVE
- case BADB:
- r = Z_DATA_ERROR;
- LEAVE
- default:
- r = Z_STREAM_ERROR;
- LEAVE
- }
-}
-
-
-local int inflate_blocks_free(s, z, c)
-inflate_blocks_statef *s;
-z_stream *z;
-uLongf *c;
-{
- inflate_blocks_reset(s, z, c);
- ZFREE(z, s->window, s->end - s->window);
- ZFREE(z, s, sizeof(struct inflate_blocks_state));
- Trace((stderr, "inflate: blocks freed\n"));
- return Z_OK;
-}
-
-/*
- * This subroutine adds the data at next_in/avail_in to the output history
- * without performing any output. The output buffer must be "caught up";
- * i.e. no pending output (hence s->read equals s->write), and the state must
- * be BLOCKS (i.e. we should be willing to see the start of a series of
- * BLOCKS). On exit, the output will also be caught up, and the checksum
- * will have been updated if need be.
- */
-local int inflate_addhistory(s, z)
-inflate_blocks_statef *s;
-z_stream *z;
-{
- uLong b; /* bit buffer */ /* NOT USED HERE */
- uInt k; /* bits in bit buffer */ /* NOT USED HERE */
- uInt t; /* temporary storage */
- Bytef *p; /* input data pointer */
- uInt n; /* bytes available there */
- Bytef *q; /* output window write pointer */
- uInt m; /* bytes to end of window or read pointer */
-
- if (s->read != s->write)
- return Z_STREAM_ERROR;
- if (s->mode != TYPE)
- return Z_DATA_ERROR;
-
- /* we're ready to rock */
- LOAD
- /* while there is input ready, copy to output buffer, moving
- * pointers as needed.
- */
- while (n) {
- t = n; /* how many to do */
- /* is there room until end of buffer? */
- if (t > m) t = m;
- /* update check information */
- if (s->checkfn != Z_NULL)
- s->check = (*s->checkfn)(s->check, q, t);
- /* output callback */
- if (z->outcb != Z_NULL)
- (*z->outcb)(q, t);
- zmemcpy(q, p, t);
- q += t;
- p += t;
- n -= t;
- z->total_out += t;
- s->read = q; /* drag read pointer forward */
-/* WRAP */ /* expand WRAP macro by hand to handle s->read */
- if (q == s->end) {
- s->read = q = s->window;
- m = WAVAIL;
- }
- }
- UPDATE
- return Z_OK;
-}
-
-
-/*
- * At the end of a Deflate-compressed PPP packet, we expect to have seen
- * a `stored' block type value but not the (zero) length bytes.
- */
-local int inflate_packet_flush(s)
- inflate_blocks_statef *s;
-{
- if (s->mode != LENS)
- return Z_DATA_ERROR;
- s->mode = TYPE;
- return Z_OK;
-}
-
-
-/*+++++*/
-/* inftrees.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* simplify the use of the inflate_huft type with some defines */
-#define base more.Base
-#define next more.Next
-#define exop word.what.Exop
-#define bits word.what.Bits
-
-
-local int huft_build OF((
- uIntf *, /* code lengths in bits */
- uInt, /* number of codes */
- uInt, /* number of "simple" codes */
- uIntf *, /* list of base values for non-simple codes */
- uIntf *, /* list of extra bits for non-simple codes */
- inflate_huft * FAR*,/* result: starting table */
- uIntf *, /* maximum lookup bits (returns actual) */
- z_stream *)); /* for zalloc function */
-
-local voidpf falloc OF((
- voidpf, /* opaque pointer (not used) */
- uInt, /* number of items */
- uInt)); /* size of item */
-
-local void ffree OF((
- voidpf q, /* opaque pointer (not used) */
- voidpf p, /* what to free (not used) */
- uInt n)); /* number of bytes (not used) */
-
-/* Tables for deflate from PKZIP's appnote.txt. */
-local uInt cplens[] = { /* Copy lengths for literal codes 257..285 */
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
- 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
- /* actually lengths - 2; also see note #13 above about 258 */
-local uInt cplext[] = { /* Extra bits for literal codes 257..285 */
- 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
- 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 192, 192}; /* 192==invalid */
-local uInt cpdist[] = { /* Copy offsets for distance codes 0..29 */
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
- 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
- 8193, 12289, 16385, 24577};
-local uInt cpdext[] = { /* Extra bits for distance codes */
- 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
- 7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
- 12, 12, 13, 13};
-
-/*
- Huffman code decoding is performed using a multi-level table lookup.
- The fastest way to decode is to simply build a lookup table whose
- size is determined by the longest code. However, the time it takes
- to build this table can also be a factor if the data being decoded
- is not very long. The most common codes are necessarily the
- shortest codes, so those codes dominate the decoding time, and hence
- the speed. The idea is you can have a shorter table that decodes the
- shorter, more probable codes, and then point to subsidiary tables for
- the longer codes. The time it costs to decode the longer codes is
- then traded against the time it takes to make longer tables.
-
- This results of this trade are in the variables lbits and dbits
- below. lbits is the number of bits the first level table for literal/
- length codes can decode in one step, and dbits is the same thing for
- the distance codes. Subsequent tables are also less than or equal to
- those sizes. These values may be adjusted either when all of the
- codes are shorter than that, in which case the longest code length in
- bits is used, or when the shortest code is *longer* than the requested
- table size, in which case the length of the shortest code in bits is
- used.
-
- There are two different values for the two tables, since they code a
- different number of possibilities each. The literal/length table
- codes 286 possible values, or in a flat code, a little over eight
- bits. The distance table codes 30 possible values, or a little less
- than five bits, flat. The optimum values for speed end up being
- about one bit more than those, so lbits is 8+1 and dbits is 5+1.
- The optimum values may differ though from machine to machine, and
- possibly even between compilers. Your mileage may vary.
- */
-
-
-/* If BMAX needs to be larger than 16, then h and x[] should be uLong. */
-#define BMAX 15 /* maximum bit length of any code */
-#define N_MAX 288 /* maximum number of codes in any set */
-
-#ifdef DEBUG_ZLIB
- uInt inflate_hufts;
-#endif
-
-local int huft_build(b, n, s, d, e, t, m, zs)
-uIntf *b; /* code lengths in bits (all assumed <= BMAX) */
-uInt n; /* number of codes (assumed <= N_MAX) */
-uInt s; /* number of simple-valued codes (0..s-1) */
-uIntf *d; /* list of base values for non-simple codes */
-uIntf *e; /* list of extra bits for non-simple codes */
-inflate_huft * FAR *t; /* result: starting table */
-uIntf *m; /* maximum lookup bits, returns actual */
-z_stream *zs; /* for zalloc function */
-/* Given a list of code lengths and a maximum table size, make a set of
- tables to decode that set of codes. Return Z_OK on success, Z_BUF_ERROR
- if the given code set is incomplete (the tables are still built in this
- case), Z_DATA_ERROR if the input is invalid (all zero length codes or an
- over-subscribed set of lengths), or Z_MEM_ERROR if not enough memory. */
-{
-
- uInt a; /* counter for codes of length k */
- uInt c[BMAX+1]; /* bit length count table */
- uInt f; /* i repeats in table every f entries */
- int g; /* maximum code length */
- int h; /* table level */
- register uInt i; /* counter, current code */
- register uInt j; /* counter */
- register int k; /* number of bits in current code */
- int l; /* bits per table (returned in m) */
- register uIntf *p; /* pointer into c[], b[], or v[] */
- inflate_huft *q; /* points to current table */
- struct inflate_huft_s r; /* table entry for structure assignment */
- inflate_huft *u[BMAX]; /* table stack */
- uInt v[N_MAX]; /* values in order of bit length */
- register int w; /* bits before this table == (l * h) */
- uInt x[BMAX+1]; /* bit offsets, then code stack */
- uIntf *xp; /* pointer into x */
- int y; /* number of dummy codes added */
- uInt z; /* number of entries in current table */
-
-
- /* Generate counts for each bit length */
- p = c;
-#define C0 *p++ = 0;
-#define C2 C0 C0 C0 C0
-#define C4 C2 C2 C2 C2
- C4 /* clear c[]--assume BMAX+1 is 16 */
- p = b; i = n;
- do {
- c[*p++]++; /* assume all entries <= BMAX */
- } while (--i);
- if (c[0] == n) /* null input--all zero length codes */
- {
- *t = (inflate_huft *)Z_NULL;
- *m = 0;
- return Z_OK;
- }
-
-
- /* Find minimum and maximum length, bound *m by those */
- l = *m;
- for (j = 1; j <= BMAX; j++)
- if (c[j])
- break;
- k = j; /* minimum code length */
- if ((uInt)l < j)
- l = j;
- for (i = BMAX; i; i--)
- if (c[i])
- break;
- g = i; /* maximum code length */
- if ((uInt)l > i)
- l = i;
- *m = l;
-
-
- /* Adjust last length count to fill out codes, if needed */
- for (y = 1 << j; j < i; j++, y <<= 1)
- if ((y -= c[j]) < 0)
- return Z_DATA_ERROR;
- if ((y -= c[i]) < 0)
- return Z_DATA_ERROR;
- c[i] += y;
-
-
- /* Generate starting offsets into the value table for each length */
- x[1] = j = 0;
- p = c + 1; xp = x + 2;
- while (--i) { /* note that i == g from above */
- *xp++ = (j += *p++);
- }
-
-
- /* Make a table of values in order of bit lengths */
- p = b; i = 0;
- do {
- if ((j = *p++) != 0)
- v[x[j]++] = i;
- } while (++i < n);
-
-
- /* Generate the Huffman codes and for each, make the table entries */
- x[0] = i = 0; /* first Huffman code is zero */
- p = v; /* grab values in bit order */
- h = -1; /* no tables yet--level -1 */
- w = -l; /* bits decoded == (l * h) */
- u[0] = (inflate_huft *)Z_NULL; /* just to keep compilers happy */
- q = (inflate_huft *)Z_NULL; /* ditto */
- z = 0; /* ditto */
-
- /* go through the bit lengths (k already is bits in shortest code) */
- for (; k <= g; k++)
- {
- a = c[k];
- while (a--)
- {
- /* here i is the Huffman code of length k bits for value *p */
- /* make tables up to required level */
- while (k > w + l)
- {
- h++;
- w += l; /* previous table always l bits */
-
- /* compute minimum size table less than or equal to l bits */
- z = (z = g - w) > (uInt)l ? l : z; /* table size upper limit */
- if ((f = 1 << (j = k - w)) > a + 1) /* try a k-w bit table */
- { /* too few codes for k-w bit table */
- f -= a + 1; /* deduct codes from patterns left */
- xp = c + k;
- if (j < z)
- while (++j < z) /* try smaller tables up to z bits */
- {
- if ((f <<= 1) <= *++xp)
- break; /* enough codes to use up j bits */
- f -= *xp; /* else deduct codes from patterns */
- }
- }
- z = 1 << j; /* table entries for j-bit table */
-
- /* allocate and link in new table */
- if ((q = (inflate_huft *)ZALLOC
- (zs,z + 1,sizeof(inflate_huft))) == Z_NULL)
- {
- if (h)
- inflate_trees_free(u[0], zs);
- return Z_MEM_ERROR; /* not enough memory */
- }
- q->word.Nalloc = z + 1;
-#ifdef DEBUG_ZLIB
- inflate_hufts += z + 1;
-#endif
- *t = q + 1; /* link to list for huft_free() */
- *(t = &(q->next)) = Z_NULL;
- u[h] = ++q; /* table starts after link */
-
- /* connect to last table, if there is one */
- if (h)
- {
- x[h] = i; /* save pattern for backing up */
- r.bits = (Byte)l; /* bits to dump before this table */
- r.exop = (Byte)j; /* bits in this table */
- r.next = q; /* pointer to this table */
- j = i >> (w - l); /* (get around Turbo C bug) */
- u[h-1][j] = r; /* connect to last table */
- }
- }
-
- /* set up table entry in r */
- r.bits = (Byte)(k - w);
- if (p >= v + n)
- r.exop = 128 + 64; /* out of values--invalid code */
- else if (*p < s)
- {
- r.exop = (Byte)(*p < 256 ? 0 : 32 + 64); /* 256 is end-of-block */
- r.base = *p++; /* simple code is just the value */
- }
- else
- {
- r.exop = (Byte)e[*p - s] + 16 + 64; /* non-simple--look up in lists */
- r.base = d[*p++ - s];
- }
-
- /* fill code-like entries with r */
- f = 1 << (k - w);
- for (j = i >> w; j < z; j += f)
- q[j] = r;
-
- /* backwards increment the k-bit code i */
- for (j = 1 << (k - 1); i & j; j >>= 1)
- i ^= j;
- i ^= j;
-
- /* backup over finished tables */
- while ((i & ((1 << w) - 1)) != x[h])
- {
- h--; /* don't need to update q */
- w -= l;
- }
- }
- }
-
-
- /* Return Z_BUF_ERROR if we were given an incomplete table */
- return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
-}
-
-
-local int inflate_trees_bits(c, bb, tb, z)
-uIntf *c; /* 19 code lengths */
-uIntf *bb; /* bits tree desired/actual depth */
-inflate_huft * FAR *tb; /* bits tree result */
-z_stream *z; /* for zfree function */
-{
- int r;
-
- r = huft_build(c, 19, 19, (uIntf*)Z_NULL, (uIntf*)Z_NULL, tb, bb, z);
- if (r == Z_DATA_ERROR)
- z->msg = "oversubscribed dynamic bit lengths tree";
- else if (r == Z_BUF_ERROR)
- {
- inflate_trees_free(*tb, z);
- z->msg = "incomplete dynamic bit lengths tree";
- r = Z_DATA_ERROR;
- }
- return r;
-}
-
-
-local int inflate_trees_dynamic(nl, nd, c, bl, bd, tl, td, z)
-uInt nl; /* number of literal/length codes */
-uInt nd; /* number of distance codes */
-uIntf *c; /* that many (total) code lengths */
-uIntf *bl; /* literal desired/actual bit depth */
-uIntf *bd; /* distance desired/actual bit depth */
-inflate_huft * FAR *tl; /* literal/length tree result */
-inflate_huft * FAR *td; /* distance tree result */
-z_stream *z; /* for zfree function */
-{
- int r;
-
- /* build literal/length tree */
- if ((r = huft_build(c, nl, 257, cplens, cplext, tl, bl, z)) != Z_OK)
- {
- if (r == Z_DATA_ERROR)
- z->msg = "oversubscribed literal/length tree";
- else if (r == Z_BUF_ERROR)
- {
- inflate_trees_free(*tl, z);
- z->msg = "incomplete literal/length tree";
- r = Z_DATA_ERROR;
- }
- return r;
- }
-
- /* build distance tree */
- if ((r = huft_build(c + nl, nd, 0, cpdist, cpdext, td, bd, z)) != Z_OK)
- {
- if (r == Z_DATA_ERROR)
- z->msg = "oversubscribed literal/length tree";
- else if (r == Z_BUF_ERROR) {
-#ifdef PKZIP_BUG_WORKAROUND
- r = Z_OK;
- }
-#else
- inflate_trees_free(*td, z);
- z->msg = "incomplete literal/length tree";
- r = Z_DATA_ERROR;
- }
- inflate_trees_free(*tl, z);
- return r;
-#endif
- }
-
- /* done */
- return Z_OK;
-}
-
-
-/* build fixed tables only once--keep them here */
-local int fixed_lock = 0;
-local int fixed_built = 0;
-#define FIXEDH 530 /* number of hufts used by fixed tables */
-local uInt fixed_left = FIXEDH;
-local inflate_huft fixed_mem[FIXEDH];
-local uInt fixed_bl;
-local uInt fixed_bd;
-local inflate_huft *fixed_tl;
-local inflate_huft *fixed_td;
-
-
-local voidpf falloc(q, n, s)
-voidpf q; /* opaque pointer (not used) */
-uInt n; /* number of items */
-uInt s; /* size of item */
-{
- Assert(s == sizeof(inflate_huft) && n <= fixed_left,
- "inflate_trees falloc overflow");
- if (q) s++; /* to make some compilers happy */
- fixed_left -= n;
- return (voidpf)(fixed_mem + fixed_left);
-}
-
-
-local void ffree(q, p, n)
-voidpf q;
-voidpf p;
-uInt n;
-{
- Assert(0, "inflate_trees ffree called!");
- if (q) q = p; /* to make some compilers happy */
-}
-
-
-local int inflate_trees_fixed(bl, bd, tl, td)
-uIntf *bl; /* literal desired/actual bit depth */
-uIntf *bd; /* distance desired/actual bit depth */
-inflate_huft * FAR *tl; /* literal/length tree result */
-inflate_huft * FAR *td; /* distance tree result */
-{
- /* build fixed tables if not built already--lock out other instances */
- while (++fixed_lock > 1)
- fixed_lock--;
- if (!fixed_built)
- {
- int k; /* temporary variable */
- unsigned c[288]; /* length list for huft_build */
- z_stream z; /* for falloc function */
-
- /* set up fake z_stream for memory routines */
- z.zalloc = falloc;
- z.zfree = ffree;
- z.opaque = Z_NULL;
-
- /* literal table */
- for (k = 0; k < 144; k++)
- c[k] = 8;
- for (; k < 256; k++)
- c[k] = 9;
- for (; k < 280; k++)
- c[k] = 7;
- for (; k < 288; k++)
- c[k] = 8;
- fixed_bl = 7;
- huft_build(c, 288, 257, cplens, cplext, &fixed_tl, &fixed_bl, &z);
-
- /* distance table */
- for (k = 0; k < 30; k++)
- c[k] = 5;
- fixed_bd = 5;
- huft_build(c, 30, 0, cpdist, cpdext, &fixed_td, &fixed_bd, &z);
-
- /* done */
- fixed_built = 1;
- }
- fixed_lock--;
- *bl = fixed_bl;
- *bd = fixed_bd;
- *tl = fixed_tl;
- *td = fixed_td;
- return Z_OK;
-}
-
-
-local int inflate_trees_free(t, z)
-inflate_huft *t; /* table to free */
-z_stream *z; /* for zfree function */
-/* Free the malloc'ed tables built by huft_build(), which makes a linked
- list of the tables it made, with the links in a dummy first entry of
- each table. */
-{
- register inflate_huft *p, *q;
-
- /* Go through linked list, freeing from the malloced (t[-1]) address. */
- p = t;
- while (p != Z_NULL)
- {
- q = (--p)->next;
- ZFREE(z, p, p->word.Nalloc * sizeof(inflate_huft));
- p = q;
- }
- return Z_OK;
-}
-
-/*+++++*/
-/* infcodes.c -- process literals and length/distance pairs
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* simplify the use of the inflate_huft type with some defines */
-#define base more.Base
-#define next more.Next
-#define exop word.what.Exop
-#define bits word.what.Bits
-
-/* inflate codes private state */
-struct inflate_codes_state {
-
- /* mode */
- enum { /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
- START, /* x: set up for LEN */
- LEN, /* i: get length/literal/eob next */
- LENEXT, /* i: getting length extra (have base) */
- DIST, /* i: get distance next */
- DISTEXT, /* i: getting distance extra */
- COPY, /* o: copying bytes in window, waiting for space */
- LIT, /* o: got literal, waiting for output space */
- WASH, /* o: got eob, possibly still output waiting */
- END, /* x: got eob and all data flushed */
- BADCODE} /* x: got error */
- mode; /* current inflate_codes mode */
-
- /* mode dependent information */
- uInt len;
- union {
- struct {
- inflate_huft *tree; /* pointer into tree */
- uInt need; /* bits needed */
- } code; /* if LEN or DIST, where in tree */
- uInt lit; /* if LIT, literal */
- struct {
- uInt get; /* bits to get for extra */
- uInt dist; /* distance back to copy from */
- } copy; /* if EXT or COPY, where and how much */
- } sub; /* submode */
-
- /* mode independent information */
- Byte lbits; /* ltree bits decoded per branch */
- Byte dbits; /* dtree bits decoder per branch */
- inflate_huft *ltree; /* literal/length/eob tree */
- inflate_huft *dtree; /* distance tree */
-
-};
-
-
-local inflate_codes_statef *inflate_codes_new(bl, bd, tl, td, z)
-uInt bl, bd;
-inflate_huft *tl, *td;
-z_stream *z;
-{
- inflate_codes_statef *c;
-
- if ((c = (inflate_codes_statef *)
- ZALLOC(z,1,sizeof(struct inflate_codes_state))) != Z_NULL)
- {
- c->mode = START;
- c->lbits = (Byte)bl;
- c->dbits = (Byte)bd;
- c->ltree = tl;
- c->dtree = td;
- Tracev((stderr, "inflate: codes new\n"));
- }
- return c;
-}
-
-
-local int inflate_codes(s, z, r)
-inflate_blocks_statef *s;
-z_stream *z;
-int r;
-{
- uInt j; /* temporary storage */
- inflate_huft *t; /* temporary pointer */
- uInt e; /* extra bits or operation */
- uLong b; /* bit buffer */
- uInt k; /* bits in bit buffer */
- Bytef *p; /* input data pointer */
- uInt n; /* bytes available there */
- Bytef *q; /* output window write pointer */
- uInt m; /* bytes to end of window or read pointer */
- Bytef *f; /* pointer to copy strings from */
- inflate_codes_statef *c = s->sub.decode.codes; /* codes state */
-
- /* copy input/output information to locals (UPDATE macro restores) */
- LOAD
-
- /* process input and output based on current state */
- while (1) switch (c->mode)
- { /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
- case START: /* x: set up for LEN */
-#ifndef SLOW
- if (m >= 258 && n >= 10)
- {
- UPDATE
- r = inflate_fast(c->lbits, c->dbits, c->ltree, c->dtree, s, z);
- LOAD
- if (r != Z_OK)
- {
- c->mode = r == Z_STREAM_END ? WASH : BADCODE;
- break;
- }
- }
-#endif /* !SLOW */
- c->sub.code.need = c->lbits;
- c->sub.code.tree = c->ltree;
- c->mode = LEN;
- case LEN: /* i: get length/literal/eob next */
- j = c->sub.code.need;
- NEEDBITS(j)
- t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
- DUMPBITS(t->bits)
- e = (uInt)(t->exop);
- if (e == 0) /* literal */
- {
- c->sub.lit = t->base;
- Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", t->base));
- c->mode = LIT;
- break;
- }
- if (e & 16) /* length */
- {
- c->sub.copy.get = e & 15;
- c->len = t->base;
- c->mode = LENEXT;
- break;
- }
- if ((e & 64) == 0) /* next table */
- {
- c->sub.code.need = e;
- c->sub.code.tree = t->next;
- break;
- }
- if (e & 32) /* end of block */
- {
- Tracevv((stderr, "inflate: end of block\n"));
- c->mode = WASH;
- break;
- }
- c->mode = BADCODE; /* invalid code */
- z->msg = "invalid literal/length code";
- r = Z_DATA_ERROR;
- LEAVE
- case LENEXT: /* i: getting length extra (have base) */
- j = c->sub.copy.get;
- NEEDBITS(j)
- c->len += (uInt)b & inflate_mask[j];
- DUMPBITS(j)
- c->sub.code.need = c->dbits;
- c->sub.code.tree = c->dtree;
- Tracevv((stderr, "inflate: length %u\n", c->len));
- c->mode = DIST;
- case DIST: /* i: get distance next */
- j = c->sub.code.need;
- NEEDBITS(j)
- t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
- DUMPBITS(t->bits)
- e = (uInt)(t->exop);
- if (e & 16) /* distance */
- {
- c->sub.copy.get = e & 15;
- c->sub.copy.dist = t->base;
- c->mode = DISTEXT;
- break;
- }
- if ((e & 64) == 0) /* next table */
- {
- c->sub.code.need = e;
- c->sub.code.tree = t->next;
- break;
- }
- c->mode = BADCODE; /* invalid code */
- z->msg = "invalid distance code";
- r = Z_DATA_ERROR;
- LEAVE
- case DISTEXT: /* i: getting distance extra */
- j = c->sub.copy.get;
- NEEDBITS(j)
- c->sub.copy.dist += (uInt)b & inflate_mask[j];
- DUMPBITS(j)
- Tracevv((stderr, "inflate: distance %u\n", c->sub.copy.dist));
- c->mode = COPY;
- case COPY: /* o: copying bytes in window, waiting for space */
-#ifndef __TURBOC__ /* Turbo C bug for following expression */
- f = (uInt)(q - s->window) < c->sub.copy.dist ?
- s->end - (c->sub.copy.dist - (q - s->window)) :
- q - c->sub.copy.dist;
-#else
- f = q - c->sub.copy.dist;
- if ((uInt)(q - s->window) < c->sub.copy.dist)
- f = s->end - (c->sub.copy.dist - (q - s->window));
-#endif
- while (c->len)
- {
- NEEDOUT
- OUTBYTE(*f++)
- if (f == s->end)
- f = s->window;
- c->len--;
- }
- c->mode = START;
- break;
- case LIT: /* o: got literal, waiting for output space */
- NEEDOUT
- OUTBYTE(c->sub.lit)
- c->mode = START;
- break;
- case WASH: /* o: got eob, possibly more output */
- FLUSH
- if (s->read != s->write)
- LEAVE
- c->mode = END;
- case END:
- r = Z_STREAM_END;
- LEAVE
- case BADCODE: /* x: got error */
- r = Z_DATA_ERROR;
- LEAVE
- default:
- r = Z_STREAM_ERROR;
- LEAVE
- }
-}
-
-
-local void inflate_codes_free(c, z)
-inflate_codes_statef *c;
-z_stream *z;
-{
- ZFREE(z, c, sizeof(struct inflate_codes_state));
- Tracev((stderr, "inflate: codes free\n"));
-}
-
-/*+++++*/
-/* inflate_util.c -- data and routines common to blocks and codes
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* copy as much as possible from the sliding window to the output area */
-local int inflate_flush(s, z, r)
-inflate_blocks_statef *s;
-z_stream *z;
-int r;
-{
- uInt n;
- Bytef *p, *q;
-
- /* local copies of source and destination pointers */
- p = z->next_out;
- q = s->read;
-
- /* compute number of bytes to copy as far as end of window */
- n = (uInt)((q <= s->write ? s->write : s->end) - q);
- if (n > z->avail_out) n = z->avail_out;
- if (n && r == Z_BUF_ERROR) r = Z_OK;
-
- /* update counters */
- z->avail_out -= n;
- z->total_out += n;
-
- /* update check information */
- if (s->checkfn != Z_NULL)
- s->check = (*s->checkfn)(s->check, q, n);
-
- /* output callback */
- if (z->outcb != Z_NULL)
- (*z->outcb)(q, n);
-
- /* copy as far as end of window */
- zmemcpy(p, q, n);
- p += n;
- q += n;
-
- /* see if more to copy at beginning of window */
- if (q == s->end)
- {
- /* wrap pointers */
- q = s->window;
- if (s->write == s->end)
- s->write = s->window;
-
- /* compute bytes to copy */
- n = (uInt)(s->write - q);
- if (n > z->avail_out) n = z->avail_out;
- if (n && r == Z_BUF_ERROR) r = Z_OK;
-
- /* update counters */
- z->avail_out -= n;
- z->total_out += n;
-
- /* update check information */
- if (s->checkfn != Z_NULL)
- s->check = (*s->checkfn)(s->check, q, n);
-
- /* output callback */
- if (z->outcb != Z_NULL)
- (*z->outcb)(q, n);
-
- /* copy */
- zmemcpy(p, q, n);
- p += n;
- q += n;
- }
-
- /* update pointers */
- z->next_out = p;
- s->read = q;
-
- /* done */
- return r;
-}
-
-
-/*+++++*/
-/* inffast.c -- process literals and length/distance pairs fast
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* simplify the use of the inflate_huft type with some defines */
-#define base more.Base
-#define next more.Next
-#define exop word.what.Exop
-#define bits word.what.Bits
-
-/* macros for bit input with no checking and for returning unused bytes */
-#define GRABBITS(j) {while(k<(j)){b|=((uLong)NEXTBYTE)<<k;k+=8;}}
-#define UNGRAB {n+=(c=k>>3);p-=c;k&=7;}
-
-/* Called with number of bytes left to write in window at least 258
- (the maximum string length) and number of input bytes available
- at least ten. The ten bytes are six bytes for the longest length/
- distance pair plus four bytes for overloading the bit buffer. */
-
-local int inflate_fast(bl, bd, tl, td, s, z)
-uInt bl, bd;
-inflate_huft *tl, *td;
-inflate_blocks_statef *s;
-z_stream *z;
-{
- inflate_huft *t; /* temporary pointer */
- uInt e; /* extra bits or operation */
- uLong b; /* bit buffer */
- uInt k; /* bits in bit buffer */
- Bytef *p; /* input data pointer */
- uInt n; /* bytes available there */
- Bytef *q; /* output window write pointer */
- uInt m; /* bytes to end of window or read pointer */
- uInt ml; /* mask for literal/length tree */
- uInt md; /* mask for distance tree */
- uInt c; /* bytes to copy */
- uInt d; /* distance back to copy from */
- Bytef *r; /* copy source pointer */
-
- /* load input, output, bit values */
- LOAD
-
- /* initialize masks */
- ml = inflate_mask[bl];
- md = inflate_mask[bd];
-
- /* do until not enough input or output space for fast loop */
- do { /* assume called with m >= 258 && n >= 10 */
- /* get literal/length code */
- GRABBITS(20) /* max bits for literal/length code */
- if ((e = (t = tl + ((uInt)b & ml))->exop) == 0)
- {
- DUMPBITS(t->bits)
- Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
- "inflate: * literal '%c'\n" :
- "inflate: * literal 0x%02x\n", t->base));
- *q++ = (Byte)t->base;
- m--;
- continue;
- }
- do {
- DUMPBITS(t->bits)
- if (e & 16)
- {
- /* get extra bits for length */
- e &= 15;
- c = t->base + ((uInt)b & inflate_mask[e]);
- DUMPBITS(e)
- Tracevv((stderr, "inflate: * length %u\n", c));
-
- /* decode distance base of block to copy */
- GRABBITS(15); /* max bits for distance code */
- e = (t = td + ((uInt)b & md))->exop;
- do {
- DUMPBITS(t->bits)
- if (e & 16)
- {
- /* get extra bits to add to distance base */
- e &= 15;
- GRABBITS(e) /* get extra bits (up to 13) */
- d = t->base + ((uInt)b & inflate_mask[e]);
- DUMPBITS(e)
- Tracevv((stderr, "inflate: * distance %u\n", d));
-
- /* do the copy */
- m -= c;
- if ((uInt)(q - s->window) >= d) /* offset before dest */
- { /* just copy */
- r = q - d;
- *q++ = *r++; c--; /* minimum count is three, */
- *q++ = *r++; c--; /* so unroll loop a little */
- }
- else /* else offset after destination */
- {
- e = d - (q - s->window); /* bytes from offset to end */
- r = s->end - e; /* pointer to offset */
- if (c > e) /* if source crosses, */
- {
- c -= e; /* copy to end of window */
- do {
- *q++ = *r++;
- } while (--e);
- r = s->window; /* copy rest from start of window */
- }
- }
- do { /* copy all or what's left */
- *q++ = *r++;
- } while (--c);
- break;
- }
- else if ((e & 64) == 0)
- e = (t = t->next + ((uInt)b & inflate_mask[e]))->exop;
- else
- {
- z->msg = "invalid distance code";
- UNGRAB
- UPDATE
- return Z_DATA_ERROR;
- }
- } while (1);
- break;
- }
- if ((e & 64) == 0)
- {
- if ((e = (t = t->next + ((uInt)b & inflate_mask[e]))->exop) == 0)
- {
- DUMPBITS(t->bits)
- Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
- "inflate: * literal '%c'\n" :
- "inflate: * literal 0x%02x\n", t->base));
- *q++ = (Byte)t->base;
- m--;
- break;
- }
- }
- else if (e & 32)
- {
- Tracevv((stderr, "inflate: * end of block\n"));
- UNGRAB
- UPDATE
- return Z_STREAM_END;
- }
- else
- {
- z->msg = "invalid literal/length code";
- UNGRAB
- UPDATE
- return Z_DATA_ERROR;
- }
- } while (1);
- } while (m >= 258 && n >= 10);
-
- /* not enough input or output--restore pointers and return */
- UNGRAB
- UPDATE
- return Z_OK;
-}
-
-
-/*+++++*/
-/* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* From: zutil.c,v 1.8 1995/05/03 17:27:12 jloup Exp */
-
-char *zlib_version = ZLIB_VERSION;
-
-char *z_errmsg[] = {
-"stream end", /* Z_STREAM_END 1 */
-"", /* Z_OK 0 */
-"file error", /* Z_ERRNO (-1) */
-"stream error", /* Z_STREAM_ERROR (-2) */
-"data error", /* Z_DATA_ERROR (-3) */
-"insufficient memory", /* Z_MEM_ERROR (-4) */
-"buffer error", /* Z_BUF_ERROR (-5) */
-""};
-
-
-/*+++++*/
-/* adler32.c -- compute the Adler-32 checksum of a data stream
- * Copyright (C) 1995 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* From: adler32.c,v 1.6 1995/05/03 17:27:08 jloup Exp */
-
-#define BASE 65521L /* largest prime smaller than 65536 */
-#define NMAX 5552
-/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
-
-#define DO1(buf) {s1 += *buf++; s2 += s1;}
-#define DO2(buf) DO1(buf); DO1(buf);
-#define DO4(buf) DO2(buf); DO2(buf);
-#define DO8(buf) DO4(buf); DO4(buf);
-#define DO16(buf) DO8(buf); DO8(buf);
-
-/* ========================================================================= */
-uLong adler32(adler, buf, len)
- uLong adler;
- Bytef *buf;
- uInt len;
-{
- unsigned long s1 = adler & 0xffff;
- unsigned long s2 = (adler >> 16) & 0xffff;
- int k;
-
- if (buf == Z_NULL) return 1L;
-
- while (len > 0) {
- k = len < NMAX ? len : NMAX;
- len -= k;
- while (k >= 16) {
- DO16(buf);
- k -= 16;
- }
- if (k != 0) do {
- DO1(buf);
- } while (--k);
- s1 %= BASE;
- s2 %= BASE;
- }
- return (s2 << 16) | s1;
-}
diff --git a/lib/zlib_inflate/Makefile b/lib/zlib_inflate/Makefile
new file mode 100644
index 0000000000..8e95fcd3c9
--- /dev/null
+++ b/lib/zlib_inflate/Makefile
@@ -0,0 +1,18 @@
+#
+# This is a modified version of zlib, which does all memory
+# allocation ahead of time.
+#
+# This is only the decompression, see zlib_deflate for the
+# the compression
+#
+# Decompression needs to be serialized for each memory
+# allocation.
+#
+# (The upsides of the simplification is that you can't get in
+# any nasty situations wrt memory management, and that the
+# uncompression can be done without blocking on allocation).
+#
+
+obj-$(CONFIG_ZLIB) += zlib_inflate.o
+
+zlib_inflate-objs := inffast.o inflate.o inftrees.o
diff --git a/lib/zlib_inflate/inffast.c b/lib/zlib_inflate/inffast.c
new file mode 100644
index 0000000000..2c13ecc5bb
--- /dev/null
+++ b/lib/zlib_inflate/inffast.c
@@ -0,0 +1,363 @@
+/* inffast.c -- fast decoding
+ * Copyright (C) 1995-2004 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include <linux/zutil.h>
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+#ifndef ASMINF
+
+/* Allow machine dependent optimization for post-increment or pre-increment.
+ Based on testing to date,
+ Pre-increment preferred for:
+ - PowerPC G3 (Adler)
+ - MIPS R5000 (Randers-Pehrson)
+ Post-increment preferred for:
+ - none
+ No measurable difference:
+ - Pentium III (Anderson)
+ - M68060 (Nikl)
+ */
+union uu {
+ unsigned short us;
+ unsigned char b[2];
+};
+
+/* Endian independed version */
+static inline unsigned short
+get_unaligned16(const unsigned short *p)
+{
+ union uu mm;
+ unsigned char *b = (unsigned char *)p;
+
+ mm.b[0] = b[0];
+ mm.b[1] = b[1];
+ return mm.us;
+}
+
+#ifdef POSTINC
+# define OFF 0
+# define PUP(a) *(a)++
+# define UP_UNALIGNED(a) get_unaligned16((a)++)
+#else
+# define OFF 1
+# define PUP(a) *++(a)
+# define UP_UNALIGNED(a) get_unaligned16(++(a))
+#endif
+
+/*
+ Decode literal, length, and distance codes and write out the resulting
+ literal and match bytes until either not enough input or output is
+ available, an end-of-block is encountered, or a data error is encountered.
+ When large enough input and output buffers are supplied to inflate(), for
+ example, a 16K input buffer and a 64K output buffer, more than 95% of the
+ inflate execution time is spent in this routine.
+
+ Entry assumptions:
+
+ state->mode == LEN
+ strm->avail_in >= 6
+ strm->avail_out >= 258
+ start >= strm->avail_out
+ state->bits < 8
+
+ On return, state->mode is one of:
+
+ LEN -- ran out of enough output space or enough available input
+ TYPE -- reached end of block code, inflate() to interpret next block
+ BAD -- error in block data
+
+ Notes:
+
+ - The maximum input bits used by a length/distance pair is 15 bits for the
+ length code, 5 bits for the length extra, 15 bits for the distance code,
+ and 13 bits for the distance extra. This totals 48 bits, or six bytes.
+ Therefore if strm->avail_in >= 6, then there is enough input to avoid
+ checking for available input while decoding.
+
+ - The maximum bytes that a single length/distance pair can output is 258
+ bytes, which is the maximum length that can be coded. inflate_fast()
+ requires strm->avail_out >= 258 for each loop to avoid checking for
+ output space.
+
+ - @start: inflate()'s starting value for strm->avail_out
+ */
+void inflate_fast(z_streamp strm, unsigned start)
+{
+ struct inflate_state *state;
+ const unsigned char *in; /* local strm->next_in */
+ const unsigned char *last; /* while in < last, enough input available */
+ unsigned char *out; /* local strm->next_out */
+ unsigned char *beg; /* inflate()'s initial strm->next_out */
+ unsigned char *end; /* while out < end, enough space available */
+#ifdef INFLATE_STRICT
+ unsigned dmax; /* maximum distance from zlib header */
+#endif
+ unsigned wsize; /* window size or zero if not using window */
+ unsigned whave; /* valid bytes in the window */
+ unsigned write; /* window write index */
+ unsigned char *window; /* allocated sliding window, if wsize != 0 */
+ unsigned long hold; /* local strm->hold */
+ unsigned bits; /* local strm->bits */
+ code const *lcode; /* local strm->lencode */
+ code const *dcode; /* local strm->distcode */
+ unsigned lmask; /* mask for first level of length codes */
+ unsigned dmask; /* mask for first level of distance codes */
+ code this; /* retrieved table entry */
+ unsigned op; /* code bits, operation, extra bits, or */
+ /* window position, window bytes to copy */
+ unsigned len; /* match length, unused bytes */
+ unsigned dist; /* match distance */
+ unsigned char *from; /* where to copy match from */
+
+ /* copy state to local variables */
+ state = (struct inflate_state *)strm->state;
+ in = strm->next_in - OFF;
+ last = in + (strm->avail_in - 5);
+ out = strm->next_out - OFF;
+ beg = out - (start - strm->avail_out);
+ end = out + (strm->avail_out - 257);
+#ifdef INFLATE_STRICT
+ dmax = state->dmax;
+#endif
+ wsize = state->wsize;
+ whave = state->whave;
+ write = state->write;
+ window = state->window;
+ hold = state->hold;
+ bits = state->bits;
+ lcode = state->lencode;
+ dcode = state->distcode;
+ lmask = (1U << state->lenbits) - 1;
+ dmask = (1U << state->distbits) - 1;
+
+ /* decode literals and length/distances until end-of-block or not enough
+ input data or output space */
+ do {
+ if (bits < 15) {
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ }
+ this = lcode[hold & lmask];
+ dolen:
+ op = (unsigned)(this.bits);
+ hold >>= op;
+ bits -= op;
+ op = (unsigned)(this.op);
+ if (op == 0) { /* literal */
+ PUP(out) = (unsigned char)(this.val);
+ }
+ else if (op & 16) { /* length base */
+ len = (unsigned)(this.val);
+ op &= 15; /* number of extra bits */
+ if (op) {
+ if (bits < op) {
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ }
+ len += (unsigned)hold & ((1U << op) - 1);
+ hold >>= op;
+ bits -= op;
+ }
+ if (bits < 15) {
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ }
+ this = dcode[hold & dmask];
+ dodist:
+ op = (unsigned)(this.bits);
+ hold >>= op;
+ bits -= op;
+ op = (unsigned)(this.op);
+ if (op & 16) { /* distance base */
+ dist = (unsigned)(this.val);
+ op &= 15; /* number of extra bits */
+ if (bits < op) {
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ if (bits < op) {
+ hold += (unsigned long)(PUP(in)) << bits;
+ bits += 8;
+ }
+ }
+ dist += (unsigned)hold & ((1U << op) - 1);
+#ifdef INFLATE_STRICT
+ if (dist > dmax) {
+ strm->msg = (char *)"invalid distance too far back";
+ state->mode = BAD;
+ break;
+ }
+#endif
+ hold >>= op;
+ bits -= op;
+ op = (unsigned)(out - beg); /* max distance in output */
+ if (dist > op) { /* see if copy from window */
+ op = dist - op; /* distance back in window */
+ if (op > whave) {
+ strm->msg = (char *)"invalid distance too far back";
+ state->mode = BAD;
+ break;
+ }
+ from = window - OFF;
+ if (write == 0) { /* very common case */
+ from += wsize - op;
+ if (op < len) { /* some from window */
+ len -= op;
+ do {
+ PUP(out) = PUP(from);
+ } while (--op);
+ from = out - dist; /* rest from output */
+ }
+ }
+ else if (write < op) { /* wrap around window */
+ from += wsize + write - op;
+ op -= write;
+ if (op < len) { /* some from end of window */
+ len -= op;
+ do {
+ PUP(out) = PUP(from);
+ } while (--op);
+ from = window - OFF;
+ if (write < len) { /* some from start of window */
+ op = write;
+ len -= op;
+ do {
+ PUP(out) = PUP(from);
+ } while (--op);
+ from = out - dist; /* rest from output */
+ }
+ }
+ }
+ else { /* contiguous in window */
+ from += write - op;
+ if (op < len) { /* some from window */
+ len -= op;
+ do {
+ PUP(out) = PUP(from);
+ } while (--op);
+ from = out - dist; /* rest from output */
+ }
+ }
+ while (len > 2) {
+ PUP(out) = PUP(from);
+ PUP(out) = PUP(from);
+ PUP(out) = PUP(from);
+ len -= 3;
+ }
+ if (len) {
+ PUP(out) = PUP(from);
+ if (len > 1)
+ PUP(out) = PUP(from);
+ }
+ }
+ else {
+ unsigned short *sout;
+ unsigned long loops;
+
+ from = out - dist; /* copy direct from output */
+ /* minimum length is three */
+ /* Align out addr */
+ if (!((long)(out - 1 + OFF) & 1)) {
+ PUP(out) = PUP(from);
+ len--;
+ }
+ sout = (unsigned short *)(out - OFF);
+ if (dist > 2) {
+ unsigned short *sfrom;
+
+ sfrom = (unsigned short *)(from - OFF);
+ loops = len >> 1;
+ do
+#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+ PUP(sout) = PUP(sfrom);
+#else
+ PUP(sout) = UP_UNALIGNED(sfrom);
+#endif
+ while (--loops);
+ out = (unsigned char *)sout + OFF;
+ from = (unsigned char *)sfrom + OFF;
+ } else { /* dist == 1 or dist == 2 */
+ unsigned short pat16;
+
+ pat16 = *(sout-1+OFF);
+ if (dist == 1) {
+ union uu mm;
+ /* copy one char pattern to both bytes */
+ mm.us = pat16;
+ mm.b[0] = mm.b[1];
+ pat16 = mm.us;
+ }
+ loops = len >> 1;
+ do
+ PUP(sout) = pat16;
+ while (--loops);
+ out = (unsigned char *)sout + OFF;
+ }
+ if (len & 1)
+ PUP(out) = PUP(from);
+ }
+ }
+ else if ((op & 64) == 0) { /* 2nd level distance code */
+ this = dcode[this.val + (hold & ((1U << op) - 1))];
+ goto dodist;
+ }
+ else {
+ strm->msg = (char *)"invalid distance code";
+ state->mode = BAD;
+ break;
+ }
+ }
+ else if ((op & 64) == 0) { /* 2nd level length code */
+ this = lcode[this.val + (hold & ((1U << op) - 1))];
+ goto dolen;
+ }
+ else if (op & 32) { /* end-of-block */
+ state->mode = TYPE;
+ break;
+ }
+ else {
+ strm->msg = (char *)"invalid literal/length code";
+ state->mode = BAD;
+ break;
+ }
+ } while (in < last && out < end);
+
+ /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+ len = bits >> 3;
+ in -= len;
+ bits -= len << 3;
+ hold &= (1U << bits) - 1;
+
+ /* update state and return */
+ strm->next_in = in + OFF;
+ strm->next_out = out + OFF;
+ strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
+ strm->avail_out = (unsigned)(out < end ?
+ 257 + (end - out) : 257 - (out - end));
+ state->hold = hold;
+ state->bits = bits;
+ return;
+}
+
+/*
+ inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
+ - Using bit fields for code structure
+ - Different op definition to avoid & for extra bits (do & for table bits)
+ - Three separate decoding do-loops for direct, window, and write == 0
+ - Special case for distance > 1 copies to do overlapped load and store copy
+ - Explicit branch predictions (based on measured branch probabilities)
+ - Deferring match copy and interspersed it with decoding subsequent codes
+ - Swapping literal/length else
+ - Swapping window/direct else
+ - Larger unrolled copy loops (three is about right)
+ - Moving len -= 3 statement into middle of loop
+ */
+
+#endif /* !ASMINF */
diff --git a/lib/zlib_inflate/inffast.h b/lib/zlib_inflate/inffast.h
new file mode 100644
index 0000000000..40315d9fdd
--- /dev/null
+++ b/lib/zlib_inflate/inffast.h
@@ -0,0 +1,11 @@
+/* inffast.h -- header to use inffast.c
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+ part of the implementation of the compression library and is
+ subject to change. Applications should only use zlib.h.
+ */
+
+void inflate_fast (z_streamp strm, unsigned start);
diff --git a/lib/zlib_inflate/inffixed.h b/lib/zlib_inflate/inffixed.h
new file mode 100644
index 0000000000..75ed4b5978
--- /dev/null
+++ b/lib/zlib_inflate/inffixed.h
@@ -0,0 +1,94 @@
+ /* inffixed.h -- table for decoding fixed codes
+ * Generated automatically by makefixed().
+ */
+
+ /* WARNING: this file should *not* be used by applications. It
+ is part of the implementation of the compression library and
+ is subject to change. Applications should only use zlib.h.
+ */
+
+ static const code lenfix[512] = {
+ {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
+ {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
+ {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
+ {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
+ {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
+ {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
+ {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
+ {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
+ {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
+ {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
+ {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
+ {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
+ {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
+ {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
+ {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
+ {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
+ {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
+ {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
+ {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
+ {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
+ {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
+ {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
+ {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
+ {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
+ {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
+ {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
+ {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
+ {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
+ {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
+ {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
+ {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
+ {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
+ {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
+ {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
+ {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
+ {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
+ {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
+ {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
+ {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
+ {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
+ {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
+ {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
+ {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
+ {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
+ {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
+ {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
+ {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
+ {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
+ {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
+ {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
+ {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
+ {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
+ {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
+ {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
+ {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
+ {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
+ {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
+ {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
+ {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
+ {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
+ {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
+ {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
+ {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
+ {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
+ {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
+ {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
+ {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
+ {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
+ {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
+ {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
+ {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
+ {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
+ {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
+ {0,9,255}
+ };
+
+ static const code distfix[32] = {
+ {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
+ {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
+ {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
+ {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
+ {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
+ {22,5,193},{64,5,0}
+ };
diff --git a/lib/zlib_inflate/inflate.c b/lib/zlib_inflate/inflate.c
new file mode 100644
index 0000000000..f5ce87b080
--- /dev/null
+++ b/lib/zlib_inflate/inflate.c
@@ -0,0 +1,918 @@
+/* inflate.c -- zlib decompression
+ * Copyright (C) 1995-2005 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ *
+ * Based on zlib 1.2.3 but modified for the Linux Kernel by
+ * Richard Purdie <richard@openedhand.com>
+ *
+ * Changes mainly for static instead of dynamic memory allocation
+ *
+ */
+
+#include <linux/zutil.h>
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+#include "infutil.h"
+
+int zlib_inflate_workspacesize(void)
+{
+ return sizeof(struct inflate_workspace);
+}
+
+int zlib_inflateReset(z_streamp strm)
+{
+ struct inflate_state *state;
+
+ if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state *)strm->state;
+ strm->total_in = strm->total_out = state->total = 0;
+ strm->msg = NULL;
+ strm->adler = 1; /* to support ill-conceived Java test suite */
+ state->mode = HEAD;
+ state->last = 0;
+ state->havedict = 0;
+ state->dmax = 32768U;
+ state->hold = 0;
+ state->bits = 0;
+ state->lencode = state->distcode = state->next = state->codes;
+
+ /* Initialise Window */
+ state->wsize = 1U << state->wbits;
+ state->write = 0;
+ state->whave = 0;
+
+ return Z_OK;
+}
+
+#if 0
+int zlib_inflatePrime(z_streamp strm, int bits, int value)
+{
+ struct inflate_state *state;
+
+ if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state *)strm->state;
+ if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;
+ value &= (1L << bits) - 1;
+ state->hold += value << state->bits;
+ state->bits += bits;
+ return Z_OK;
+}
+#endif
+
+int zlib_inflateInit2(z_streamp strm, int windowBits)
+{
+ struct inflate_state *state;
+
+ if (strm == NULL) return Z_STREAM_ERROR;
+ strm->msg = NULL; /* in case we return an error */
+
+ state = &WS(strm)->inflate_state;
+ strm->state = (struct internal_state *)state;
+
+ if (windowBits < 0) {
+ state->wrap = 0;
+ windowBits = -windowBits;
+ }
+ else {
+ state->wrap = (windowBits >> 4) + 1;
+ }
+ if (windowBits < 8 || windowBits > 15) {
+ return Z_STREAM_ERROR;
+ }
+ state->wbits = (unsigned)windowBits;
+ state->window = &WS(strm)->working_window[0];
+
+ return zlib_inflateReset(strm);
+}
+
+/*
+ Return state with length and distance decoding tables and index sizes set to
+ fixed code decoding. This returns fixed tables from inffixed.h.
+ */
+static void zlib_fixedtables(struct inflate_state *state)
+{
+# include "inffixed.h"
+ state->lencode = lenfix;
+ state->lenbits = 9;
+ state->distcode = distfix;
+ state->distbits = 5;
+}
+
+
+/*
+ Update the window with the last wsize (normally 32K) bytes written before
+ returning. This is only called when a window is already in use, or when
+ output has been written during this inflate call, but the end of the deflate
+ stream has not been reached yet. It is also called to window dictionary data
+ when a dictionary is loaded.
+
+ Providing output buffers larger than 32K to inflate() should provide a speed
+ advantage, since only the last 32K of output is copied to the sliding window
+ upon return from inflate(), and since all distances after the first 32K of
+ output will fall in the output data, making match copies simpler and faster.
+ The advantage may be dependent on the size of the processor's data caches.
+ */
+static void zlib_updatewindow(z_streamp strm, unsigned out)
+{
+ struct inflate_state *state;
+ unsigned copy, dist;
+
+ state = (struct inflate_state *)strm->state;
+
+ /* copy state->wsize or less output bytes into the circular window */
+ copy = out - strm->avail_out;
+ if (copy >= state->wsize) {
+ memcpy(state->window, strm->next_out - state->wsize, state->wsize);
+ state->write = 0;
+ state->whave = state->wsize;
+ }
+ else {
+ dist = state->wsize - state->write;
+ if (dist > copy) dist = copy;
+ memcpy(state->window + state->write, strm->next_out - copy, dist);
+ copy -= dist;
+ if (copy) {
+ memcpy(state->window, strm->next_out - copy, copy);
+ state->write = copy;
+ state->whave = state->wsize;
+ }
+ else {
+ state->write += dist;
+ if (state->write == state->wsize) state->write = 0;
+ if (state->whave < state->wsize) state->whave += dist;
+ }
+ }
+}
+
+
+/*
+ * At the end of a Deflate-compressed PPP packet, we expect to have seen
+ * a `stored' block type value but not the (zero) length bytes.
+ */
+/*
+ Returns true if inflate is currently at the end of a block generated by
+ Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+ implementation to provide an additional safety check. PPP uses
+ Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
+ block. When decompressing, PPP checks that at the end of input packet,
+ inflate is waiting for these length bytes.
+ */
+static int zlib_inflateSyncPacket(z_streamp strm)
+{
+ struct inflate_state *state;
+
+ if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state *)strm->state;
+
+ if (state->mode == STORED && state->bits == 0) {
+ state->mode = TYPE;
+ return Z_OK;
+ }
+ return Z_DATA_ERROR;
+}
+
+/* Macros for inflate(): */
+
+/* check function to use adler32() for zlib or crc32() for gzip */
+#define UPDATE(check, buf, len) zlib_adler32(check, buf, len)
+
+/* Load registers with state in inflate() for speed */
+#define LOAD() \
+ do { \
+ put = strm->next_out; \
+ left = strm->avail_out; \
+ next = strm->next_in; \
+ have = strm->avail_in; \
+ hold = state->hold; \
+ bits = state->bits; \
+ } while (0)
+
+/* Restore state from registers in inflate() */
+#define RESTORE() \
+ do { \
+ strm->next_out = put; \
+ strm->avail_out = left; \
+ strm->next_in = next; \
+ strm->avail_in = have; \
+ state->hold = hold; \
+ state->bits = bits; \
+ } while (0)
+
+/* Clear the input bit accumulator */
+#define INITBITS() \
+ do { \
+ hold = 0; \
+ bits = 0; \
+ } while (0)
+
+/* Get a byte of input into the bit accumulator, or return from inflate()
+ if there is no input available. */
+#define PULLBYTE() \
+ do { \
+ if (have == 0) goto inf_leave; \
+ have--; \
+ hold += (unsigned long)(*next++) << bits; \
+ bits += 8; \
+ } while (0)
+
+/* Assure that there are at least n bits in the bit accumulator. If there is
+ not enough available input to do that, then return from inflate(). */
+#define NEEDBITS(n) \
+ do { \
+ while (bits < (unsigned)(n)) \
+ PULLBYTE(); \
+ } while (0)
+
+/* Return the low n bits of the bit accumulator (n < 16) */
+#define BITS(n) \
+ ((unsigned)hold & ((1U << (n)) - 1))
+
+/* Remove n bits from the bit accumulator */
+#define DROPBITS(n) \
+ do { \
+ hold >>= (n); \
+ bits -= (unsigned)(n); \
+ } while (0)
+
+/* Remove zero to seven bits as needed to go to a byte boundary */
+#define BYTEBITS() \
+ do { \
+ hold >>= bits & 7; \
+ bits -= bits & 7; \
+ } while (0)
+
+/* Reverse the bytes in a 32-bit value */
+#define REVERSE(q) \
+ ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
+ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
+
+/*
+ inflate() uses a state machine to process as much input data and generate as
+ much output data as possible before returning. The state machine is
+ structured roughly as follows:
+
+ for (;;) switch (state) {
+ ...
+ case STATEn:
+ if (not enough input data or output space to make progress)
+ return;
+ ... make progress ...
+ state = STATEm;
+ break;
+ ...
+ }
+
+ so when inflate() is called again, the same case is attempted again, and
+ if the appropriate resources are provided, the machine proceeds to the
+ next state. The NEEDBITS() macro is usually the way the state evaluates
+ whether it can proceed or should return. NEEDBITS() does the return if
+ the requested bits are not available. The typical use of the BITS macros
+ is:
+
+ NEEDBITS(n);
+ ... do something with BITS(n) ...
+ DROPBITS(n);
+
+ where NEEDBITS(n) either returns from inflate() if there isn't enough
+ input left to load n bits into the accumulator, or it continues. BITS(n)
+ gives the low n bits in the accumulator. When done, DROPBITS(n) drops
+ the low n bits off the accumulator. INITBITS() clears the accumulator
+ and sets the number of available bits to zero. BYTEBITS() discards just
+ enough bits to put the accumulator on a byte boundary. After BYTEBITS()
+ and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
+
+ NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
+ if there is no input available. The decoding of variable length codes uses
+ PULLBYTE() directly in order to pull just enough bytes to decode the next
+ code, and no more.
+
+ Some states loop until they get enough input, making sure that enough
+ state information is maintained to continue the loop where it left off
+ if NEEDBITS() returns in the loop. For example, want, need, and keep
+ would all have to actually be part of the saved state in case NEEDBITS()
+ returns:
+
+ case STATEw:
+ while (want < need) {
+ NEEDBITS(n);
+ keep[want++] = BITS(n);
+ DROPBITS(n);
+ }
+ state = STATEx;
+ case STATEx:
+
+ As shown above, if the next state is also the next case, then the break
+ is omitted.
+
+ A state may also return if there is not enough output space available to
+ complete that state. Those states are copying stored data, writing a
+ literal byte, and copying a matching string.
+
+ When returning, a "goto inf_leave" is used to update the total counters,
+ update the check value, and determine whether any progress has been made
+ during that inflate() call in order to return the proper return code.
+ Progress is defined as a change in either strm->avail_in or strm->avail_out.
+ When there is a window, goto inf_leave will update the window with the last
+ output written. If a goto inf_leave occurs in the middle of decompression
+ and there is no window currently, goto inf_leave will create one and copy
+ output to the window for the next call of inflate().
+
+ In this implementation, the flush parameter of inflate() only affects the
+ return code (per zlib.h). inflate() always writes as much as possible to
+ strm->next_out, given the space available and the provided input--the effect
+ documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers
+ the allocation of and copying into a sliding window until necessary, which
+ provides the effect documented in zlib.h for Z_FINISH when the entire input
+ stream available. So the only thing the flush parameter actually does is:
+ when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it
+ will return Z_BUF_ERROR if it has not reached the end of the stream.
+ */
+
+int zlib_inflate(z_streamp strm, int flush)
+{
+ struct inflate_state *state;
+ const unsigned char *next; /* next input */
+ unsigned char *put; /* next output */
+ unsigned have, left; /* available input and output */
+ unsigned long hold; /* bit buffer */
+ unsigned bits; /* bits in bit buffer */
+ unsigned in, out; /* save starting available input and output */
+ unsigned copy; /* number of stored or match bytes to copy */
+ unsigned char *from; /* where to copy match bytes from */
+ code this; /* current decoding table entry */
+ code last; /* parent table entry */
+ unsigned len; /* length to copy for repeats, bits to drop */
+ int ret; /* return code */
+ static const unsigned short order[19] = /* permutation of code lengths */
+ {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+ /* Do not check for strm->next_out == NULL here as ppc zImage
+ inflates to strm->next_out = 0 */
+
+ if (strm == NULL || strm->state == NULL ||
+ (strm->next_in == NULL && strm->avail_in != 0))
+ return Z_STREAM_ERROR;
+
+ state = (struct inflate_state *)strm->state;
+
+ if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
+ LOAD();
+ in = have;
+ out = left;
+ ret = Z_OK;
+ for (;;)
+ switch (state->mode) {
+ case HEAD:
+ if (state->wrap == 0) {
+ state->mode = TYPEDO;
+ break;
+ }
+ NEEDBITS(16);
+ if (
+ ((BITS(8) << 8) + (hold >> 8)) % 31) {
+ strm->msg = (char *)"incorrect header check";
+ state->mode = BAD;
+ break;
+ }
+ if (BITS(4) != Z_DEFLATED) {
+ strm->msg = (char *)"unknown compression method";
+ state->mode = BAD;
+ break;
+ }
+ DROPBITS(4);
+ len = BITS(4) + 8;
+ if (len > state->wbits) {
+ strm->msg = (char *)"invalid window size";
+ state->mode = BAD;
+ break;
+ }
+ state->dmax = 1U << len;
+ strm->adler = state->check = zlib_adler32(0L, NULL, 0);
+ state->mode = hold & 0x200 ? DICTID : TYPE;
+ INITBITS();
+ break;
+ case DICTID:
+ NEEDBITS(32);
+ strm->adler = state->check = REVERSE(hold);
+ INITBITS();
+ state->mode = DICT;
+ case DICT:
+ if (state->havedict == 0) {
+ RESTORE();
+ return Z_NEED_DICT;
+ }
+ strm->adler = state->check = zlib_adler32(0L, NULL, 0);
+ state->mode = TYPE;
+ case TYPE:
+ if (flush == Z_BLOCK) goto inf_leave;
+ case TYPEDO:
+ if (state->last) {
+ BYTEBITS();
+ state->mode = CHECK;
+ break;
+ }
+ NEEDBITS(3);
+ state->last = BITS(1);
+ DROPBITS(1);
+ switch (BITS(2)) {
+ case 0: /* stored block */
+ state->mode = STORED;
+ break;
+ case 1: /* fixed block */
+ zlib_fixedtables(state);
+ state->mode = LEN; /* decode codes */
+ break;
+ case 2: /* dynamic block */
+ state->mode = TABLE;
+ break;
+ case 3:
+ strm->msg = (char *)"invalid block type";
+ state->mode = BAD;
+ }
+ DROPBITS(2);
+ break;
+ case STORED:
+ BYTEBITS(); /* go to byte boundary */
+ NEEDBITS(32);
+ if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
+ strm->msg = (char *)"invalid stored block lengths";
+ state->mode = BAD;
+ break;
+ }
+ state->length = (unsigned)hold & 0xffff;
+ INITBITS();
+ state->mode = COPY;
+ case COPY:
+ copy = state->length;
+ if (copy) {
+ if (copy > have) copy = have;
+ if (copy > left) copy = left;
+ if (copy == 0) goto inf_leave;
+ memcpy(put, next, copy);
+ have -= copy;
+ next += copy;
+ left -= copy;
+ put += copy;
+ state->length -= copy;
+ break;
+ }
+ state->mode = TYPE;
+ break;
+ case TABLE:
+ NEEDBITS(14);
+ state->nlen = BITS(5) + 257;
+ DROPBITS(5);
+ state->ndist = BITS(5) + 1;
+ DROPBITS(5);
+ state->ncode = BITS(4) + 4;
+ DROPBITS(4);
+#ifndef PKZIP_BUG_WORKAROUND
+ if (state->nlen > 286 || state->ndist > 30) {
+ strm->msg = (char *)"too many length or distance symbols";
+ state->mode = BAD;
+ break;
+ }
+#endif
+ state->have = 0;
+ state->mode = LENLENS;
+ case LENLENS:
+ while (state->have < state->ncode) {
+ NEEDBITS(3);
+ state->lens[order[state->have++]] = (unsigned short)BITS(3);
+ DROPBITS(3);
+ }
+ while (state->have < 19)
+ state->lens[order[state->have++]] = 0;
+ state->next = state->codes;
+ state->lencode = (code const *)(state->next);
+ state->lenbits = 7;
+ ret = zlib_inflate_table(CODES, state->lens, 19, &(state->next),
+ &(state->lenbits), state->work);
+ if (ret) {
+ strm->msg = (char *)"invalid code lengths set";
+ state->mode = BAD;
+ break;
+ }
+ state->have = 0;
+ state->mode = CODELENS;
+ case CODELENS:
+ while (state->have < state->nlen + state->ndist) {
+ for (;;) {
+ this = state->lencode[BITS(state->lenbits)];
+ if ((unsigned)(this.bits) <= bits) break;
+ PULLBYTE();
+ }
+ if (this.val < 16) {
+ NEEDBITS(this.bits);
+ DROPBITS(this.bits);
+ state->lens[state->have++] = this.val;
+ }
+ else {
+ if (this.val == 16) {
+ NEEDBITS(this.bits + 2);
+ DROPBITS(this.bits);
+ if (state->have == 0) {
+ strm->msg = (char *)"invalid bit length repeat";
+ state->mode = BAD;
+ break;
+ }
+ len = state->lens[state->have - 1];
+ copy = 3 + BITS(2);
+ DROPBITS(2);
+ }
+ else if (this.val == 17) {
+ NEEDBITS(this.bits + 3);
+ DROPBITS(this.bits);
+ len = 0;
+ copy = 3 + BITS(3);
+ DROPBITS(3);
+ }
+ else {
+ NEEDBITS(this.bits + 7);
+ DROPBITS(this.bits);
+ len = 0;
+ copy = 11 + BITS(7);
+ DROPBITS(7);
+ }
+ if (state->have + copy > state->nlen + state->ndist) {
+ strm->msg = (char *)"invalid bit length repeat";
+ state->mode = BAD;
+ break;
+ }
+ while (copy--)
+ state->lens[state->have++] = (unsigned short)len;
+ }
+ }
+
+ /* handle error breaks in while */
+ if (state->mode == BAD) break;
+
+ /* build code tables */
+ state->next = state->codes;
+ state->lencode = (code const *)(state->next);
+ state->lenbits = 9;
+ ret = zlib_inflate_table(LENS, state->lens, state->nlen, &(state->next),
+ &(state->lenbits), state->work);
+ if (ret) {
+ strm->msg = (char *)"invalid literal/lengths set";
+ state->mode = BAD;
+ break;
+ }
+ state->distcode = (code const *)(state->next);
+ state->distbits = 6;
+ ret = zlib_inflate_table(DISTS, state->lens + state->nlen, state->ndist,
+ &(state->next), &(state->distbits), state->work);
+ if (ret) {
+ strm->msg = (char *)"invalid distances set";
+ state->mode = BAD;
+ break;
+ }
+ state->mode = LEN;
+ case LEN:
+ if (have >= 6 && left >= 258) {
+ RESTORE();
+ inflate_fast(strm, out);
+ LOAD();
+ break;
+ }
+ for (;;) {
+ this = state->lencode[BITS(state->lenbits)];
+ if ((unsigned)(this.bits) <= bits) break;
+ PULLBYTE();
+ }
+ if (this.op && (this.op & 0xf0) == 0) {
+ last = this;
+ for (;;) {
+ this = state->lencode[last.val +
+ (BITS(last.bits + last.op) >> last.bits)];
+ if ((unsigned)(last.bits + this.bits) <= bits) break;
+ PULLBYTE();
+ }
+ DROPBITS(last.bits);
+ }
+ DROPBITS(this.bits);
+ state->length = (unsigned)this.val;
+ if ((int)(this.op) == 0) {
+ state->mode = LIT;
+ break;
+ }
+ if (this.op & 32) {
+ state->mode = TYPE;
+ break;
+ }
+ if (this.op & 64) {
+ strm->msg = (char *)"invalid literal/length code";
+ state->mode = BAD;
+ break;
+ }
+ state->extra = (unsigned)(this.op) & 15;
+ state->mode = LENEXT;
+ case LENEXT:
+ if (state->extra) {
+ NEEDBITS(state->extra);
+ state->length += BITS(state->extra);
+ DROPBITS(state->extra);
+ }
+ state->mode = DIST;
+ case DIST:
+ for (;;) {
+ this = state->distcode[BITS(state->distbits)];
+ if ((unsigned)(this.bits) <= bits) break;
+ PULLBYTE();
+ }
+ if ((this.op & 0xf0) == 0) {
+ last = this;
+ for (;;) {
+ this = state->distcode[last.val +
+ (BITS(last.bits + last.op) >> last.bits)];
+ if ((unsigned)(last.bits + this.bits) <= bits) break;
+ PULLBYTE();
+ }
+ DROPBITS(last.bits);
+ }
+ DROPBITS(this.bits);
+ if (this.op & 64) {
+ strm->msg = (char *)"invalid distance code";
+ state->mode = BAD;
+ break;
+ }
+ state->offset = (unsigned)this.val;
+ state->extra = (unsigned)(this.op) & 15;
+ state->mode = DISTEXT;
+ case DISTEXT:
+ if (state->extra) {
+ NEEDBITS(state->extra);
+ state->offset += BITS(state->extra);
+ DROPBITS(state->extra);
+ }
+#ifdef INFLATE_STRICT
+ if (state->offset > state->dmax) {
+ strm->msg = (char *)"invalid distance too far back";
+ state->mode = BAD;
+ break;
+ }
+#endif
+ if (state->offset > state->whave + out - left) {
+ strm->msg = (char *)"invalid distance too far back";
+ state->mode = BAD;
+ break;
+ }
+ state->mode = MATCH;
+ case MATCH:
+ if (left == 0) goto inf_leave;
+ copy = out - left;
+ if (state->offset > copy) { /* copy from window */
+ copy = state->offset - copy;
+ if (copy > state->write) {
+ copy -= state->write;
+ from = state->window + (state->wsize - copy);
+ }
+ else
+ from = state->window + (state->write - copy);
+ if (copy > state->length) copy = state->length;
+ }
+ else { /* copy from output */
+ from = put - state->offset;
+ copy = state->length;
+ }
+ if (copy > left) copy = left;
+ left -= copy;
+ state->length -= copy;
+ do {
+ *put++ = *from++;
+ } while (--copy);
+ if (state->length == 0) state->mode = LEN;
+ break;
+ case LIT:
+ if (left == 0) goto inf_leave;
+ *put++ = (unsigned char)(state->length);
+ left--;
+ state->mode = LEN;
+ break;
+ case CHECK:
+ if (state->wrap) {
+ NEEDBITS(32);
+ out -= left;
+ strm->total_out += out;
+ state->total += out;
+ if (out)
+ strm->adler = state->check =
+ UPDATE(state->check, put - out, out);
+ out = left;
+ if ((
+ REVERSE(hold)) != state->check) {
+ strm->msg = (char *)"incorrect data check";
+ state->mode = BAD;
+ break;
+ }
+ INITBITS();
+ }
+ state->mode = DONE;
+ case DONE:
+ ret = Z_STREAM_END;
+ goto inf_leave;
+ case BAD:
+ ret = Z_DATA_ERROR;
+ goto inf_leave;
+ case MEM:
+ return Z_MEM_ERROR;
+ case SYNC:
+ default:
+ return Z_STREAM_ERROR;
+ }
+
+ /*
+ Return from inflate(), updating the total counts and the check value.
+ If there was no progress during the inflate() call, return a buffer
+ error. Call zlib_updatewindow() to create and/or update the window state.
+ */
+ inf_leave:
+ RESTORE();
+ if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
+ zlib_updatewindow(strm, out);
+
+ in -= strm->avail_in;
+ out -= strm->avail_out;
+ strm->total_in += in;
+ strm->total_out += out;
+ state->total += out;
+ if (state->wrap && out)
+ strm->adler = state->check =
+ UPDATE(state->check, strm->next_out - out, out);
+
+ strm->data_type = state->bits + (state->last ? 64 : 0) +
+ (state->mode == TYPE ? 128 : 0);
+
+ if (flush == Z_PACKET_FLUSH && ret == Z_OK &&
+ strm->avail_out != 0 && strm->avail_in == 0)
+ return zlib_inflateSyncPacket(strm);
+
+ if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
+ ret = Z_BUF_ERROR;
+
+ return ret;
+}
+
+int zlib_inflateEnd(z_streamp strm)
+{
+ if (strm == NULL || strm->state == NULL)
+ return Z_STREAM_ERROR;
+ return Z_OK;
+}
+
+#if 0
+int zlib_inflateSetDictionary(z_streamp strm, const Byte *dictionary,
+ uInt dictLength)
+{
+ struct inflate_state *state;
+ unsigned long id;
+
+ /* check state */
+ if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state *)strm->state;
+ if (state->wrap != 0 && state->mode != DICT)
+ return Z_STREAM_ERROR;
+
+ /* check for correct dictionary id */
+ if (state->mode == DICT) {
+ id = zlib_adler32(0L, NULL, 0);
+ id = zlib_adler32(id, dictionary, dictLength);
+ if (id != state->check)
+ return Z_DATA_ERROR;
+ }
+
+ /* copy dictionary to window */
+ zlib_updatewindow(strm, strm->avail_out);
+
+ if (dictLength > state->wsize) {
+ memcpy(state->window, dictionary + dictLength - state->wsize,
+ state->wsize);
+ state->whave = state->wsize;
+ }
+ else {
+ memcpy(state->window + state->wsize - dictLength, dictionary,
+ dictLength);
+ state->whave = dictLength;
+ }
+ state->havedict = 1;
+ return Z_OK;
+}
+#endif
+
+#if 0
+/*
+ Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
+ or when out of input. When called, *have is the number of pattern bytes
+ found in order so far, in 0..3. On return *have is updated to the new
+ state. If on return *have equals four, then the pattern was found and the
+ return value is how many bytes were read including the last byte of the
+ pattern. If *have is less than four, then the pattern has not been found
+ yet and the return value is len. In the latter case, zlib_syncsearch() can be
+ called again with more data and the *have state. *have is initialized to
+ zero for the first call.
+ */
+static unsigned zlib_syncsearch(unsigned *have, unsigned char *buf,
+ unsigned len)
+{
+ unsigned got;
+ unsigned next;
+
+ got = *have;
+ next = 0;
+ while (next < len && got < 4) {
+ if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
+ got++;
+ else if (buf[next])
+ got = 0;
+ else
+ got = 4 - got;
+ next++;
+ }
+ *have = got;
+ return next;
+}
+#endif
+
+#if 0
+int zlib_inflateSync(z_streamp strm)
+{
+ unsigned len; /* number of bytes to look at or looked at */
+ unsigned long in, out; /* temporary to save total_in and total_out */
+ unsigned char buf[4]; /* to restore bit buffer to byte string */
+ struct inflate_state *state;
+
+ /* check parameters */
+ if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state *)strm->state;
+ if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
+
+ /* if first time, start search in bit buffer */
+ if (state->mode != SYNC) {
+ state->mode = SYNC;
+ state->hold <<= state->bits & 7;
+ state->bits -= state->bits & 7;
+ len = 0;
+ while (state->bits >= 8) {
+ buf[len++] = (unsigned char)(state->hold);
+ state->hold >>= 8;
+ state->bits -= 8;
+ }
+ state->have = 0;
+ zlib_syncsearch(&(state->have), buf, len);
+ }
+
+ /* search available input */
+ len = zlib_syncsearch(&(state->have), strm->next_in, strm->avail_in);
+ strm->avail_in -= len;
+ strm->next_in += len;
+ strm->total_in += len;
+
+ /* return no joy or set up to restart inflate() on a new block */
+ if (state->have != 4) return Z_DATA_ERROR;
+ in = strm->total_in; out = strm->total_out;
+ zlib_inflateReset(strm);
+ strm->total_in = in; strm->total_out = out;
+ state->mode = TYPE;
+ return Z_OK;
+}
+#endif
+
+/*
+ * This subroutine adds the data at next_in/avail_in to the output history
+ * without performing any output. The output buffer must be "caught up";
+ * i.e. no pending output but this should always be the case. The state must
+ * be waiting on the start of a block (i.e. mode == TYPE or HEAD). On exit,
+ * the output will also be caught up, and the checksum will have been updated
+ * if need be.
+ */
+int zlib_inflateIncomp(z_stream *z)
+{
+ struct inflate_state *state = (struct inflate_state *)z->state;
+ Byte *saved_no = z->next_out;
+ uInt saved_ao = z->avail_out;
+
+ if (state->mode != TYPE && state->mode != HEAD)
+ return Z_DATA_ERROR;
+
+ /* Setup some variables to allow misuse of updateWindow */
+ z->avail_out = 0;
+ z->next_out = (unsigned char*)z->next_in + z->avail_in;
+
+ zlib_updatewindow(z, z->avail_in);
+
+ /* Restore saved variables */
+ z->avail_out = saved_ao;
+ z->next_out = saved_no;
+
+ z->adler = state->check =
+ UPDATE(state->check, z->next_in, z->avail_in);
+
+ z->total_out += z->avail_in;
+ z->total_in += z->avail_in;
+ z->next_in += z->avail_in;
+ state->total += z->avail_in;
+ z->avail_in = 0;
+
+ return Z_OK;
+}
diff --git a/lib/zlib_inflate/inflate.h b/lib/zlib_inflate/inflate.h
new file mode 100644
index 0000000000..3d17b3d1b2
--- /dev/null
+++ b/lib/zlib_inflate/inflate.h
@@ -0,0 +1,111 @@
+#ifndef INFLATE_H
+#define INFLATE_H
+
+/* inflate.h -- internal inflate state definition
+ * Copyright (C) 1995-2004 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+ part of the implementation of the compression library and is
+ subject to change. Applications should only use zlib.h.
+ */
+
+/* Possible inflate modes between inflate() calls */
+typedef enum {
+ HEAD, /* i: waiting for magic header */
+ FLAGS, /* i: waiting for method and flags (gzip) */
+ TIME, /* i: waiting for modification time (gzip) */
+ OS, /* i: waiting for extra flags and operating system (gzip) */
+ EXLEN, /* i: waiting for extra length (gzip) */
+ EXTRA, /* i: waiting for extra bytes (gzip) */
+ NAME, /* i: waiting for end of file name (gzip) */
+ COMMENT, /* i: waiting for end of comment (gzip) */
+ HCRC, /* i: waiting for header crc (gzip) */
+ DICTID, /* i: waiting for dictionary check value */
+ DICT, /* waiting for inflateSetDictionary() call */
+ TYPE, /* i: waiting for type bits, including last-flag bit */
+ TYPEDO, /* i: same, but skip check to exit inflate on new block */
+ STORED, /* i: waiting for stored size (length and complement) */
+ COPY, /* i/o: waiting for input or output to copy stored block */
+ TABLE, /* i: waiting for dynamic block table lengths */
+ LENLENS, /* i: waiting for code length code lengths */
+ CODELENS, /* i: waiting for length/lit and distance code lengths */
+ LEN, /* i: waiting for length/lit code */
+ LENEXT, /* i: waiting for length extra bits */
+ DIST, /* i: waiting for distance code */
+ DISTEXT, /* i: waiting for distance extra bits */
+ MATCH, /* o: waiting for output space to copy string */
+ LIT, /* o: waiting for output space to write literal */
+ CHECK, /* i: waiting for 32-bit check value */
+ LENGTH, /* i: waiting for 32-bit length (gzip) */
+ DONE, /* finished check, done -- remain here until reset */
+ BAD, /* got a data error -- remain here until reset */
+ MEM, /* got an inflate() memory error -- remain here until reset */
+ SYNC /* looking for synchronization bytes to restart inflate() */
+} inflate_mode;
+
+/*
+ State transitions between above modes -
+
+ (most modes can go to the BAD or MEM mode -- not shown for clarity)
+
+ Process header:
+ HEAD -> (gzip) or (zlib)
+ (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME
+ NAME -> COMMENT -> HCRC -> TYPE
+ (zlib) -> DICTID or TYPE
+ DICTID -> DICT -> TYPE
+ Read deflate blocks:
+ TYPE -> STORED or TABLE or LEN or CHECK
+ STORED -> COPY -> TYPE
+ TABLE -> LENLENS -> CODELENS -> LEN
+ Read deflate codes:
+ LEN -> LENEXT or LIT or TYPE
+ LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
+ LIT -> LEN
+ Process trailer:
+ CHECK -> LENGTH -> DONE
+ */
+
+/* state maintained between inflate() calls. Approximately 7K bytes. */
+struct inflate_state {
+ inflate_mode mode; /* current inflate mode */
+ int last; /* true if processing last block */
+ int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
+ int havedict; /* true if dictionary provided */
+ int flags; /* gzip header method and flags (0 if zlib) */
+ unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
+ unsigned long check; /* protected copy of check value */
+ unsigned long total; /* protected copy of output count */
+ /* gz_headerp head; */ /* where to save gzip header information */
+ /* sliding window */
+ unsigned wbits; /* log base 2 of requested window size */
+ unsigned wsize; /* window size or zero if not using window */
+ unsigned whave; /* valid bytes in the window */
+ unsigned write; /* window write index */
+ unsigned char *window; /* allocated sliding window, if needed */
+ /* bit accumulator */
+ unsigned long hold; /* input bit accumulator */
+ unsigned bits; /* number of bits in "in" */
+ /* for string and stored block copying */
+ unsigned length; /* literal or length of data to copy */
+ unsigned offset; /* distance back to copy string from */
+ /* for table and code decoding */
+ unsigned extra; /* extra bits needed */
+ /* fixed and dynamic code tables */
+ code const *lencode; /* starting table for length/literal codes */
+ code const *distcode; /* starting table for distance codes */
+ unsigned lenbits; /* index bits for lencode */
+ unsigned distbits; /* index bits for distcode */
+ /* dynamic table building */
+ unsigned ncode; /* number of code length code lengths */
+ unsigned nlen; /* number of length code lengths */
+ unsigned ndist; /* number of distance code lengths */
+ unsigned have; /* number of code lengths in lens[] */
+ code *next; /* next available space in codes[] */
+ unsigned short lens[320]; /* temporary storage for code lengths */
+ unsigned short work[288]; /* work area for code table building */
+ code codes[ENOUGH]; /* space for code tables */
+};
+#endif
diff --git a/lib/zlib_inflate/inftrees.c b/lib/zlib_inflate/inftrees.c
new file mode 100644
index 0000000000..3fe6ce5b53
--- /dev/null
+++ b/lib/zlib_inflate/inftrees.c
@@ -0,0 +1,315 @@
+/* inftrees.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-2005 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include <linux/zutil.h>
+#include "inftrees.h"
+
+#define MAXBITS 15
+
+/*
+ Build a set of tables to decode the provided canonical Huffman code.
+ The code lengths are lens[0..codes-1]. The result starts at *table,
+ whose indices are 0..2^bits-1. work is a writable array of at least
+ lens shorts, which is used as a work area. type is the type of code
+ to be generated, CODES, LENS, or DISTS. On return, zero is success,
+ -1 is an invalid code, and +1 means that ENOUGH isn't enough. table
+ on return points to the next available entry's address. bits is the
+ requested root table index bits, and on return it is the actual root
+ table index bits. It will differ if the request is greater than the
+ longest code or if it is less than the shortest code.
+ */
+int zlib_inflate_table(codetype type, unsigned short *lens, unsigned codes,
+ code **table, unsigned *bits, unsigned short *work)
+{
+ unsigned len; /* a code's length in bits */
+ unsigned sym; /* index of code symbols */
+ unsigned min, max; /* minimum and maximum code lengths */
+ unsigned root; /* number of index bits for root table */
+ unsigned curr; /* number of index bits for current table */
+ unsigned drop; /* code bits to drop for sub-table */
+ int left; /* number of prefix codes available */
+ unsigned used; /* code entries in table used */
+ unsigned huff; /* Huffman code */
+ unsigned incr; /* for incrementing code, index */
+ unsigned fill; /* index for replicating entries */
+ unsigned low; /* low bits for current root entry */
+ unsigned mask; /* mask for low root bits */
+ code this; /* table entry for duplication */
+ code *next; /* next available space in table */
+ const unsigned short *base; /* base value table to use */
+ const unsigned short *extra; /* extra bits table to use */
+ int end; /* use base and extra for symbol > end */
+ unsigned short count[MAXBITS+1]; /* number of codes of each length */
+ unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
+ static const unsigned short lbase[31] = { /* Length codes 257..285 base */
+ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+ 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+ static const unsigned short lext[31] = { /* Length codes 257..285 extra */
+ 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+ 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 201, 196};
+ static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
+ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+ 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+ 8193, 12289, 16385, 24577, 0, 0};
+ static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
+ 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+ 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+ 28, 28, 29, 29, 64, 64};
+
+ /*
+ Process a set of code lengths to create a canonical Huffman code. The
+ code lengths are lens[0..codes-1]. Each length corresponds to the
+ symbols 0..codes-1. The Huffman code is generated by first sorting the
+ symbols by length from short to long, and retaining the symbol order
+ for codes with equal lengths. Then the code starts with all zero bits
+ for the first code of the shortest length, and the codes are integer
+ increments for the same length, and zeros are appended as the length
+ increases. For the deflate format, these bits are stored backwards
+ from their more natural integer increment ordering, and so when the
+ decoding tables are built in the large loop below, the integer codes
+ are incremented backwards.
+
+ This routine assumes, but does not check, that all of the entries in
+ lens[] are in the range 0..MAXBITS. The caller must assure this.
+ 1..MAXBITS is interpreted as that code length. zero means that that
+ symbol does not occur in this code.
+
+ The codes are sorted by computing a count of codes for each length,
+ creating from that a table of starting indices for each length in the
+ sorted table, and then entering the symbols in order in the sorted
+ table. The sorted table is work[], with that space being provided by
+ the caller.
+
+ The length counts are used for other purposes as well, i.e. finding
+ the minimum and maximum length codes, determining if there are any
+ codes at all, checking for a valid set of lengths, and looking ahead
+ at length counts to determine sub-table sizes when building the
+ decoding tables.
+ */
+
+ /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+ for (len = 0; len <= MAXBITS; len++)
+ count[len] = 0;
+ for (sym = 0; sym < codes; sym++)
+ count[lens[sym]]++;
+
+ /* bound code lengths, force root to be within code lengths */
+ root = *bits;
+ for (max = MAXBITS; max >= 1; max--)
+ if (count[max] != 0) break;
+ if (root > max) root = max;
+ if (max == 0) { /* no symbols to code at all */
+ this.op = (unsigned char)64; /* invalid code marker */
+ this.bits = (unsigned char)1;
+ this.val = (unsigned short)0;
+ *(*table)++ = this; /* make a table to force an error */
+ *(*table)++ = this;
+ *bits = 1;
+ return 0; /* no symbols, but wait for decoding to report error */
+ }
+ for (min = 1; min <= MAXBITS; min++)
+ if (count[min] != 0) break;
+ if (root < min) root = min;
+
+ /* check for an over-subscribed or incomplete set of lengths */
+ left = 1;
+ for (len = 1; len <= MAXBITS; len++) {
+ left <<= 1;
+ left -= count[len];
+ if (left < 0) return -1; /* over-subscribed */
+ }
+ if (left > 0 && (type == CODES || max != 1))
+ return -1; /* incomplete set */
+
+ /* generate offsets into symbol table for each length for sorting */
+ offs[1] = 0;
+ for (len = 1; len < MAXBITS; len++)
+ offs[len + 1] = offs[len] + count[len];
+
+ /* sort symbols by length, by symbol order within each length */
+ for (sym = 0; sym < codes; sym++)
+ if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
+
+ /*
+ Create and fill in decoding tables. In this loop, the table being
+ filled is at next and has curr index bits. The code being used is huff
+ with length len. That code is converted to an index by dropping drop
+ bits off of the bottom. For codes where len is less than drop + curr,
+ those top drop + curr - len bits are incremented through all values to
+ fill the table with replicated entries.
+
+ root is the number of index bits for the root table. When len exceeds
+ root, sub-tables are created pointed to by the root entry with an index
+ of the low root bits of huff. This is saved in low to check for when a
+ new sub-table should be started. drop is zero when the root table is
+ being filled, and drop is root when sub-tables are being filled.
+
+ When a new sub-table is needed, it is necessary to look ahead in the
+ code lengths to determine what size sub-table is needed. The length
+ counts are used for this, and so count[] is decremented as codes are
+ entered in the tables.
+
+ used keeps track of how many table entries have been allocated from the
+ provided *table space. It is checked when a LENS table is being made
+ against the space in *table, ENOUGH, minus the maximum space needed by
+ the worst case distance code, MAXD. This should never happen, but the
+ sufficiency of ENOUGH has not been proven exhaustively, hence the check.
+ This assumes that when type == LENS, bits == 9.
+
+ sym increments through all symbols, and the loop terminates when
+ all codes of length max, i.e. all codes, have been processed. This
+ routine permits incomplete codes, so another loop after this one fills
+ in the rest of the decoding tables with invalid code markers.
+ */
+
+ /* set up for code type */
+ switch (type) {
+ case CODES:
+ base = extra = work; /* dummy value--not used */
+ end = 19;
+ break;
+ case LENS:
+ base = lbase;
+ base -= 257;
+ extra = lext;
+ extra -= 257;
+ end = 256;
+ break;
+ default: /* DISTS */
+ base = dbase;
+ extra = dext;
+ end = -1;
+ }
+
+ /* initialize state for loop */
+ huff = 0; /* starting code */
+ sym = 0; /* starting code symbol */
+ len = min; /* starting code length */
+ next = *table; /* current table to fill in */
+ curr = root; /* current table index bits */
+ drop = 0; /* current bits to drop from code for index */
+ low = (unsigned)(-1); /* trigger new sub-table when len > root */
+ used = 1U << root; /* use root table entries */
+ mask = used - 1; /* mask for comparing low */
+
+ /* check available table space */
+ if (type == LENS && used >= ENOUGH - MAXD)
+ return 1;
+
+ /* process all codes and make table entries */
+ for (;;) {
+ /* create table entry */
+ this.bits = (unsigned char)(len - drop);
+ if ((int)(work[sym]) < end) {
+ this.op = (unsigned char)0;
+ this.val = work[sym];
+ }
+ else if ((int)(work[sym]) > end) {
+ this.op = (unsigned char)(extra[work[sym]]);
+ this.val = base[work[sym]];
+ }
+ else {
+ this.op = (unsigned char)(32 + 64); /* end of block */
+ this.val = 0;
+ }
+
+ /* replicate for those indices with low len bits equal to huff */
+ incr = 1U << (len - drop);
+ fill = 1U << curr;
+ min = fill; /* save offset to next table */
+ do {
+ fill -= incr;
+ next[(huff >> drop) + fill] = this;
+ } while (fill != 0);
+
+ /* backwards increment the len-bit code huff */
+ incr = 1U << (len - 1);
+ while (huff & incr)
+ incr >>= 1;
+ if (incr != 0) {
+ huff &= incr - 1;
+ huff += incr;
+ }
+ else
+ huff = 0;
+
+ /* go to next symbol, update count, len */
+ sym++;
+ if (--(count[len]) == 0) {
+ if (len == max) break;
+ len = lens[work[sym]];
+ }
+
+ /* create new sub-table if needed */
+ if (len > root && (huff & mask) != low) {
+ /* if first time, transition to sub-tables */
+ if (drop == 0)
+ drop = root;
+
+ /* increment past last table */
+ next += min; /* here min is 1 << curr */
+
+ /* determine length of next table */
+ curr = len - drop;
+ left = (int)(1 << curr);
+ while (curr + drop < max) {
+ left -= count[curr + drop];
+ if (left <= 0) break;
+ curr++;
+ left <<= 1;
+ }
+
+ /* check for enough space */
+ used += 1U << curr;
+ if (type == LENS && used >= ENOUGH - MAXD)
+ return 1;
+
+ /* point entry in root table to sub-table */
+ low = huff & mask;
+ (*table)[low].op = (unsigned char)curr;
+ (*table)[low].bits = (unsigned char)root;
+ (*table)[low].val = (unsigned short)(next - *table);
+ }
+ }
+
+ /*
+ Fill in rest of table for incomplete codes. This loop is similar to the
+ loop above in incrementing huff for table indices. It is assumed that
+ len is equal to curr + drop, so there is no loop needed to increment
+ through high index bits. When the current sub-table is filled, the loop
+ drops back to the root table to fill in any remaining entries there.
+ */
+ this.op = (unsigned char)64; /* invalid code marker */
+ this.bits = (unsigned char)(len - drop);
+ this.val = (unsigned short)0;
+ while (huff != 0) {
+ /* when done with sub-table, drop back to root table */
+ if (drop != 0 && (huff & mask) != low) {
+ drop = 0;
+ len = root;
+ next = *table;
+ this.bits = (unsigned char)len;
+ }
+
+ /* put invalid code marker in table */
+ next[huff >> drop] = this;
+
+ /* backwards increment the len-bit code huff */
+ incr = 1U << (len - 1);
+ while (huff & incr)
+ incr >>= 1;
+ if (incr != 0) {
+ huff &= incr - 1;
+ huff += incr;
+ }
+ else
+ huff = 0;
+ }
+
+ /* set return parameters */
+ *table += used;
+ *bits = root;
+ return 0;
+}
diff --git a/lib/zlib_inflate/inftrees.h b/lib/zlib_inflate/inftrees.h
new file mode 100644
index 0000000000..b70b4731ac
--- /dev/null
+++ b/lib/zlib_inflate/inftrees.h
@@ -0,0 +1,59 @@
+#ifndef INFTREES_H
+#define INFTREES_H
+
+/* inftrees.h -- header to use inftrees.c
+ * Copyright (C) 1995-2005 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+ part of the implementation of the compression library and is
+ subject to change. Applications should only use zlib.h.
+ */
+
+/* Structure for decoding tables. Each entry provides either the
+ information needed to do the operation requested by the code that
+ indexed that table entry, or it provides a pointer to another
+ table that indexes more bits of the code. op indicates whether
+ the entry is a pointer to another table, a literal, a length or
+ distance, an end-of-block, or an invalid code. For a table
+ pointer, the low four bits of op is the number of index bits of
+ that table. For a length or distance, the low four bits of op
+ is the number of extra bits to get after the code. bits is
+ the number of bits in this code or part of the code to drop off
+ of the bit buffer. val is the actual byte to output in the case
+ of a literal, the base length or distance, or the offset from
+ the current table to the next table. Each entry is four bytes. */
+typedef struct {
+ unsigned char op; /* operation, extra bits, table bits */
+ unsigned char bits; /* bits in this part of the code */
+ unsigned short val; /* offset in table or code value */
+} code;
+
+/* op values as set by inflate_table():
+ 00000000 - literal
+ 0000tttt - table link, tttt != 0 is the number of table index bits
+ 0001eeee - length or distance, eeee is the number of extra bits
+ 01100000 - end of block
+ 01000000 - invalid code
+ */
+
+/* Maximum size of dynamic tree. The maximum found in a long but non-
+ exhaustive search was 1444 code structures (852 for length/literals
+ and 592 for distances, the latter actually the result of an
+ exhaustive search). The true maximum is not known, but the value
+ below is more than safe. */
+#define ENOUGH 2048
+#define MAXD 592
+
+/* Type of code to build for inftable() */
+typedef enum {
+ CODES,
+ LENS,
+ DISTS
+} codetype;
+
+extern int zlib_inflate_table (codetype type, unsigned short *lens,
+ unsigned codes, code **table,
+ unsigned *bits, unsigned short *work);
+#endif
diff --git a/lib/zlib_inflate/infutil.c b/lib/zlib_inflate/infutil.c
new file mode 100644
index 0000000000..f452ba6040
--- /dev/null
+++ b/lib/zlib_inflate/infutil.c
@@ -0,0 +1,47 @@
+#include <linux/zutil.h>
+#include <errno.h>
+
+/* Utility function: initialize zlib, unpack binary blob, clean up zlib,
+ * return len or negative error code.
+ */
+int zlib_inflate_blob(void *gunzip_buf, unsigned int sz,
+ const void *buf, unsigned int len)
+{
+ const u8 *zbuf = buf;
+ struct z_stream_s *strm;
+ int rc;
+
+ rc = -ENOMEM;
+ strm = kmalloc(sizeof(*strm), GFP_KERNEL);
+ if (strm == NULL)
+ goto gunzip_nomem1;
+ strm->workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+ if (strm->workspace == NULL)
+ goto gunzip_nomem2;
+
+ /* gzip header (1f,8b,08... 10 bytes total + possible asciz filename)
+ * expected to be stripped from input
+ */
+ strm->next_in = zbuf;
+ strm->avail_in = len;
+ strm->next_out = gunzip_buf;
+ strm->avail_out = sz;
+
+ rc = zlib_inflateInit2(strm, -MAX_WBITS);
+ if (rc == Z_OK) {
+ rc = zlib_inflate(strm, Z_FINISH);
+ /* after Z_FINISH, only Z_STREAM_END is "we unpacked it all" */
+ if (rc == Z_STREAM_END)
+ rc = sz - strm->avail_out;
+ else
+ rc = -EINVAL;
+ zlib_inflateEnd(strm);
+ } else
+ rc = -EINVAL;
+
+ kfree(strm->workspace);
+gunzip_nomem2:
+ kfree(strm);
+gunzip_nomem1:
+ return rc; /* returns Z_OK (0) if successful */
+}
diff --git a/lib/zlib_inflate/infutil.h b/lib/zlib_inflate/infutil.h
new file mode 100644
index 0000000000..e7dea7a88a
--- /dev/null
+++ b/lib/zlib_inflate/infutil.h
@@ -0,0 +1,25 @@
+/* infutil.h -- types and macros common to blocks and codes
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+ part of the implementation of the compression library and is
+ subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFUTIL_H
+#define _INFUTIL_H
+
+#include <linux/zlib.h>
+
+/* memory allocation for inflation */
+
+struct inflate_workspace {
+ struct inflate_state inflate_state;
+ unsigned char working_window[1 << MAX_WBITS];
+};
+
+#define WS(z) ((struct inflate_workspace *)(z->workspace))
+
+#endif
diff --git a/lib/zlib_inflate/modules.builtin b/lib/zlib_inflate/modules.builtin
new file mode 100644
index 0000000000..720622562c
--- /dev/null
+++ b/lib/zlib_inflate/modules.builtin
@@ -0,0 +1 @@
+kernel/lib/zlib_inflate/zlib_inflate.ko
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 15:21:56 +0000