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author | Holger Schurig <holgerschurig@gmail.com> | 2014-05-13 10:28:42 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-05-14 10:03:43 +0200 |
commit | f1f532084a6e9ee8225f047353999b459455df7e (patch) | |
tree | f2b8b1f25c5c630209c6970e3a7ce57a3d55d367 /commands/crc.c | |
parent | ab23d0bb3f66cfb7a97a8aa6b8007687ed7a6925 (diff) | |
download | barebox-f1f532084a6e9ee8225f047353999b459455df7e.tar.gz barebox-f1f532084a6e9ee8225f047353999b459455df7e.tar.xz |
commands: harmonize in-barebox documentation
This patch does probably too much, but it's hard (and very
cumbersome/time consuming) to break it out. What is does is this:
* each command has one short description, e.g. "list MUX configuration"
* made sure the short descriptions start lowercase
* each command has one usage. That string contains just the
options, e.g. "[-npn]". It's not part of the long help text.
* that is, it doesn't say "[OPTIONS]" anymore, every usable option
is listed by character in this (short) option string (the long
description is in the long help text, as before)
* help texts have been reworked, to make them
- sometimes smaller
- sometimes describe the options better
- more often present themselves in a nicer format
* all long help texts are now created with BUSYBOX_CMD_HELP_
macros, no more 'static const __maybe_unused char cmd_foobar_help[]'
* made sure the long help texts starts uppercase
* because cmdtp->name and cmdtp->opts together provide the new usage,
all "Usage: foobar" texts have been removed from the long help texts
* BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this
is nicer in the source code
* BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself
* made sure no line gets longer than 77 characters
* delibertely renamed cmdtp->usage, so that we can get compile-time
errors (e.g. in out-of-tree modules that use register_command()
* the 'help' command can now always emit the usage, even without
compiled long help texts
* 'help -v' gives a list of commands with their short description, this
is similar like the old "help" command before my patchset
* 'help -a' gives out help of all commands
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/crc.c')
-rw-r--r-- | commands/crc.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/commands/crc.c b/commands/crc.c index 89b4fb2600..36121623da 100644 --- a/commands/crc.c +++ b/commands/crc.c @@ -108,19 +108,25 @@ static int do_crc(int argc, char *argv[]) } BAREBOX_CMD_HELP_START(crc) -BAREBOX_CMD_HELP_USAGE("crc32 [OPTION] [AREA]\n") -BAREBOX_CMD_HELP_SHORT("Calculate a crc32 checksum of a memory area.\n") -BAREBOX_CMD_HELP_OPT ("-f <file>", "Use file instead of memory.\n") +BAREBOX_CMD_HELP_TEXT("Calculate a CRC32 checksum of a memory area.") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT ("-f FILE", "Use file instead of memory.") #ifdef CONFIG_CMD_CRC_CMP -BAREBOX_CMD_HELP_OPT ("-F <file>", "Use file to compare.\n") +BAREBOX_CMD_HELP_OPT ("-F FILE", "Use file to compare.") #endif -BAREBOX_CMD_HELP_OPT ("-v <crc>", "Verify\n") -BAREBOX_CMD_HELP_OPT ("-V <file>", "Verify with crc read from <file>\n") +BAREBOX_CMD_HELP_OPT ("-v CRC", "Verify") +BAREBOX_CMD_HELP_OPT ("-V FILE", "Verify with CRC read from FILE") BAREBOX_CMD_HELP_END BAREBOX_CMD_START(crc32) .cmd = do_crc, - .usage = "crc32 checksum calculation", + BAREBOX_CMD_DESC("CRC32 checksum calculation") + BAREBOX_CMD_OPTS("[-f" +#ifdef CONFIG_CMD_CRC_CMP + "F" +#endif + "vV] AREA") BAREBOX_CMD_GROUP(CMD_GRP_MEM) BAREBOX_CMD_HELP(cmd_crc_help) BAREBOX_CMD_END |