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ash/hush: provide help text

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$ ./busybox ash --help
BusyBox v1.19.0.git (2011-03-07 11:25:29 CET) multi-call binary.

Usage: ash [-/+OPTCHARS] [-/+o OPTNAME]... [-c 'SCRIPT' [ARG0 [ARGS]] / SCRIPT_FILE [ARGS]]

Unix shell interpreter

$ ./busybox hush --help
BusyBox v1.19.0.git (2011-03-07 11:25:29 CET) multi-call binary.

Usage: hush [-nx] [-c 'SCRIPT' [ARG0 [ARGS]] / SCRIPT_FILE [ARGS]]

Unix shell interpreter

function                                             old     new   delta
packed_usage                                       28163   28212     +49
setcmd                                                85      78      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 49/-7)              Total: 42 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-03-07 12:34:59 +01:00
parent aefe1c260e
commit b0b834342f
2 changed files with 40 additions and 21 deletions
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40
shell/ash.c
View File

@ -190,13 +190,6 @@
//config: variable each time it is displayed.
//config:
//usage:#define ash_trivial_usage NOUSAGE_STR
//usage:#define ash_full_usage ""
//usage:#define sh_trivial_usage NOUSAGE_STR
//usage:#define sh_full_usage ""
//usage:#define bash_trivial_usage NOUSAGE_STR
//usage:#define bash_full_usage ""
/* ============ Hash table sizes. Configurable. */
@ -10155,6 +10148,7 @@ setoption(int flag, int val)
/* NOTREACHED */
}
static int
options(int cmdline)
{
char *p;
@ -10180,7 +10174,7 @@ options(int cmdline)
else if (*argptr == NULL)
setparam(argptr);
}
break; /* "-" or "--" terminates options */
break; /* "-" or "--" terminates options */
}
}
/* first char was + or - */
@ -10282,10 +10276,10 @@ setcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
if (!argv[1])
return showvars(nullstr, 0, VUNSET);
INT_OFF;
retval = 1;
if (!options(0)) { /* if no parse error... */
retval = 0;
retval = options(/*cmdline:*/ 0);
if (retval == 0) { /* if no parse error... */
optschanged();
if (*argptr != NULL) {
setparam(argptr);
@ -12938,14 +12932,32 @@ init(void)
setvar("PPID", utoa(getppid()), 0);
p = lookupvar("PWD");
if (p)
if (p) {
if (*p != '/' || stat(p, &st1) || stat(".", &st2)
|| st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
|| st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino
) {
p = '\0';
}
}
setpwd(p, 0);
}
}
//usage:#define ash_trivial_usage
//usage: "[-/+OPTCHARS] [-/+o OPTNAME]... [-c 'SCRIPT' [ARG0 [ARGS]] / SCRIPT_FILE [ARGS]]"
//usage:#define ash_full_usage "\n\n"
//usage: "Unix shell interpreter"
//usage:#if ENABLE_FEATURE_SH_IS_ASH
//usage:# define sh_trivial_usage ash_trivial_usage
//usage:# define sh_full_usage ash_full_usage
//usage:#endif
//usage:#if ENABLE_FEATURE_BASH_IS_ASH
//usage:# define bash_trivial_usage ash_trivial_usage
//usage:# define bash_full_usage ash_full_usage
//usage:#endif
/*
* Process the shell command line arguments.
*/
@ -12963,7 +12975,7 @@ procargs(char **argv)
for (i = 0; i < NOPTS; i++)
optlist[i] = 2;
argptr = xargv;
if (options(1)) {
if (options(/*cmdline:*/ 1)) {
/* it already printed err message */
raise_exception(EXERROR);
}

21
shell/hush.c
View File

@ -255,14 +255,21 @@
* therefore we don't show them either.
*/
//usage:#define hush_trivial_usage
//usage: "[-nx] [-c SCRIPT]"
//usage:#define hush_full_usage ""
//usage: "[-nx] [-c 'SCRIPT' [ARG0 [ARGS]] / SCRIPT_FILE [ARGS]]"
//usage:#define hush_full_usage "\n\n"
//usage: "Unix shell interpreter"
//usage:#define msh_trivial_usage hush_trivial_usage
//usage:#define msh_full_usage ""
//usage:#define sh_trivial_usage NOUSAGE_STR
//usage:#define sh_full_usage ""
//usage:#define bash_trivial_usage NOUSAGE_STR
//usage:#define bash_full_usage ""
//usage:#define msh_full_usage hush_full_usage
//usage:#if ENABLE_FEATURE_SH_IS_HUSH
//usage:# define sh_trivial_usage hush_trivial_usage
//usage:# define sh_full_usage hush_full_usage
//usage:#endif
//usage:#if ENABLE_FEATURE_BASH_IS_HUSH
//usage:# define bash_trivial_usage hush_trivial_usage
//usage:# define bash_full_usage hush_full_usage
//usage:#endif
/* Build knobs */