diff options
Diffstat (limited to 'utility.c')
| -rw-r--r-- | utility.c | 27 |
1 files changed, 25 insertions, 2 deletions
@@ -40,6 +40,7 @@ #define bb_need_full_version #define BB_DECLARE_EXTERN #include "messages.c" +#include "usage.h" #include <stdio.h> #include <string.h> @@ -76,12 +77,23 @@ const char mtab_file[] = "/proc/mounts"; # endif #endif -extern void usage(const char *usage) +static struct BB_applet *applet_using; + +extern void show_usage(void) { - fprintf(stderr, "%s\n\nUsage: %s\n\n", full_version, usage); + static const char no_help[] = "No help available.\n"; + + const char *usage_string = no_help; + + if (applet_using->usage_index >= 0) { + usage_string = usage_messages[applet_using->usage_index]; + } + fprintf(stderr, "%s\n\nUsage: %s %s\n", full_version, + applet_using->name, usage_string); exit(EXIT_FAILURE); } + static void verror_msg(const char *s, va_list p) { fflush(stdout); @@ -1702,6 +1714,17 @@ struct BB_applet *find_applet_by_name(const char *name) applet_name_compare); } +void run_applet_by_name(const char *name, int argc, char **argv) +{ + /* Do a binary search to find the applet entry given the name. */ + if ((applet_using = find_applet_by_name(name)) != NULL) { + applet_name = applet_using->name; + if (argv[1] && strcmp(argv[1], "--help") == 0) + show_usage(); + exit((*(applet_using->main)) (argc, argv)); + } +} + #if defined BB_DD || defined BB_TAIL unsigned long parse_number(const char *numstr, const struct suffix_mult *suffixes) |