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authorSascha Hauer <s.hauer@pengutronix.de>2012-10-30 15:36:52 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2012-10-30 15:42:39 +0100
commite8018cf5f0eb6d70fb62a855206efe41918b726c (patch)
treea1ece5359cb1aba96f178e9bf6ea1784296fad61 /commands/filetype.c
parentcc9fffc825d7404315c60b70f68f293c355b90fd (diff)
downloadbarebox-e8018cf5f0eb6d70fb62a855206efe41918b726c.tar.gz
add filetype command support
This adds support for a filetype detection command. It can be used to print a filename on the console or to set a variable with the detection result for use in shell scripts. The command also has an option to print the known filetypes so that a user knows what to match for. Based on an earlier version from Jean-Christophe. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/filetype.c')
-rw-r--r--commands/filetype.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/commands/filetype.c b/commands/filetype.c
new file mode 100644
index 0000000..20d335b
--- /dev/null
+++ b/commands/filetype.c
@@ -0,0 +1,97 @@
+/*
+ * (C) Copyright 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2 Only
+ */
+
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <filetype.h>
+#include <environment.h>
+#include <magicvar.h>
+#include <getopt.h>
+#include <linux/stat.h>
+#include <fs.h>
+
+static int do_filetype(int argc, char *argv[])
+{
+ int opt;
+ enum filetype type;
+ char *filename = NULL;
+ int verbose = -1, list = 0;
+ const char *varname = NULL;
+ struct stat s;
+ int ret;
+
+ while ((opt = getopt(argc, argv, "vls:")) > 0) {
+ switch (opt) {
+ case 'v':
+ verbose = 1;
+ break;
+ case 'l':
+ list = 1;
+ break;
+ case 's':
+ varname = optarg;
+ /* in scripting mode default to nonverbose */
+ if (verbose < 0)
+ verbose = 0;
+ break;
+ default:
+ return COMMAND_ERROR_USAGE;
+ }
+ }
+
+ if (verbose < 0)
+ verbose = 1;
+
+ if (list) {
+ int i;
+
+ printf("known filetypes:\n");
+
+ for (i = 1; i < filetype_max; i++)
+ printf("%-16s: %s\n", file_type_to_short_string(i),
+ file_type_to_string(i));
+ return 0;
+ }
+
+ if (argc - optind < 1)
+ return COMMAND_ERROR_USAGE;
+
+ filename = argv[optind];
+
+ ret = stat(filename, &s);
+ if (ret)
+ return ret;
+
+ if (S_ISDIR(s.st_mode))
+ return -EISDIR;
+
+ type = file_name_detect_type(filename);
+
+ if (verbose)
+ printf("%s: %s (%s)\n", filename,
+ file_type_to_string(type),
+ file_type_to_short_string(type));
+
+ if (varname)
+ setenv(varname, file_type_to_short_string(type));
+
+ return 0;
+}
+
+BAREBOX_CMD_HELP_START(filetype)
+BAREBOX_CMD_HELP_USAGE("filetype [OPTIONS] <file>\n")
+BAREBOX_CMD_HELP_SHORT("detect type of a file and export result to a variable\n")
+BAREBOX_CMD_HELP_OPT("-v", "verbose\n")
+BAREBOX_CMD_HELP_OPT("-s <v>", "set <v> to shortname\n")
+BAREBOX_CMD_HELP_OPT("-l", "list known filetypes\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(filetype)
+ .cmd = do_filetype,
+ .usage = "detect file type",
+ BAREBOX_CMD_HELP(cmd_filetype_help)
+BAREBOX_CMD_END