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/* vi: set sw=4 ts=4: */
/*
* Which implementation for busybox
*
* Copyright (C) 2000 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* 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
*
*/
#include "internal.h"
#include <stdio.h>
#include <dirent.h>
extern int which_main(int argc, char **argv)
{
char *path_list, *test, *tmp;
struct dirent *next;
if (**(argv + 1) == '-') {
usage("which [COMMAND ...]\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nLocates a COMMAND.\n"
#endif
);
}
argc--;
path_list = getenv("PATH");
if (!path_list)
path_list = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin";
while(argc-- > 0 && *(argv++) != '\0' && strlen(*argv)) {
for( test=path_list; (tmp=strchr(test, ':')) && (tmp+1)!=NULL; test=++tmp) {
DIR *dir;
*tmp='\0';
//printf("Checking directory '%s'\n", test);
dir = opendir(test);
if (!dir)
continue;
while ((next = readdir(dir)) != NULL) {
//printf("Checking file '%s'\n", next->d_name);
if ((strcmp(next->d_name, *argv) == 0)) {
printf("%s/%s\n", test, next->d_name);
exit(TRUE);
}
}
}
}
exit(TRUE);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
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