From f1f532084a6e9ee8225f047353999b459455df7e Mon Sep 17 00:00:00 2001 From: Holger Schurig Date: Tue, 13 May 2014 10:28:42 +0200 Subject: 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 Signed-off-by: Sascha Hauer --- commands/printenv.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'commands/printenv.c') diff --git a/commands/printenv.c b/commands/printenv.c index 27ca10d53e..83353aeb32 100644 --- a/commands/printenv.c +++ b/commands/printenv.c @@ -57,8 +57,9 @@ static int do_printenv(int argc, char *argv[]) } BAREBOX_CMD_HELP_START(printenv) -BAREBOX_CMD_HELP_USAGE("printenv [variable]\n") -BAREBOX_CMD_HELP_SHORT("Print value of one or all environment variables.\n") +BAREBOX_CMD_HELP_TEXT("If an argument is given, printenv prints the content of an environment") +BAREBOX_CMD_HELP_TEXT("variable to the terminal. If no argument is specified, all variables are") +BAREBOX_CMD_HELP_TEXT("printed.") BAREBOX_CMD_HELP_END /** @@ -72,7 +73,8 @@ printed.

BAREBOX_CMD_START(printenv) .cmd = do_printenv, - .usage = "Print value of one or all environment variables.", + BAREBOX_CMD_DESC("print value of environment variables") + BAREBOX_CMD_OPTS("[VARIABLE]") BAREBOX_CMD_GROUP(CMD_GRP_ENV) BAREBOX_CMD_HELP(cmd_printenv_help) BAREBOX_CMD_END -- cgit v1.2.3