114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) tons of folks. Tracking down who wrote what
|
|
* isn't something I'm going to worry about... If you wrote something
|
|
* here, please feel free to acknowledge your work.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
|
|
* Permission has been granted to redistribute this code under the GPL.
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "busybox.h"
|
|
|
|
#undef APPLET
|
|
#undef APPLET_NOUSAGE
|
|
#undef PROTOTYPES
|
|
#include "applets.h"
|
|
|
|
struct BB_applet *applet_using;
|
|
|
|
/* The -1 arises because of the {0,NULL,0,-1} entry above. */
|
|
const size_t NUM_APPLETS = (sizeof (applets) / sizeof (struct BB_applet) - 1);
|
|
|
|
extern void show_usage(void)
|
|
{
|
|
const char *format_string;
|
|
const char *usage_string = usage_messages;
|
|
int i;
|
|
/* From busybox.c */
|
|
extern int been_there_done_that;
|
|
|
|
if (strcmp(applet_using->name, "busybox")==0) {
|
|
been_there_done_that=1;
|
|
busybox_main(0, NULL);
|
|
}
|
|
|
|
for (i = applet_using - applets; i > 0; ) {
|
|
if (!*usage_string++) {
|
|
--i;
|
|
}
|
|
}
|
|
format_string = "%s\n\nUsage: %s %s\n\n";
|
|
if(*usage_string == 0)
|
|
format_string = "%s\n\nNo help available.\n\n";
|
|
fprintf(stderr, format_string,
|
|
full_version, applet_using->name, usage_string);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static int applet_name_compare(const void *x, const void *y)
|
|
{
|
|
const char *name = x;
|
|
const struct BB_applet *applet = y;
|
|
|
|
return strcmp(name, applet->name);
|
|
}
|
|
|
|
extern const size_t NUM_APPLETS;
|
|
|
|
struct BB_applet *find_applet_by_name(const char *name)
|
|
{
|
|
return bsearch(name, applets, NUM_APPLETS, sizeof(struct BB_applet),
|
|
applet_name_compare);
|
|
}
|
|
|
|
void run_applet_by_name(const char *name, int argc, char **argv)
|
|
{
|
|
static int recurse_level = 0;
|
|
|
|
recurse_level++;
|
|
/* 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));
|
|
}
|
|
/* Just in case they have renamed busybox - Check argv[1] */
|
|
if (recurse_level == 1) {
|
|
run_applet_by_name("busybox", argc, argv);
|
|
}
|
|
recurse_level = 0;
|
|
}
|
|
|
|
|
|
/* END CODE */
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|