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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 <sys/stat.h>
#include <sys/param.h>
const char which_usage[] =
"which [COMMAND ...]\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nLocates a COMMAND.\n"
#endif
;
extern int which_main(int argc, char **argv)
{
char *path_list, *test, *tmp, *path_parsed;
char buf[PATH_MAX];
struct stat filestat;
int count = 0;
if (argc <= 1 || **(argv + 1) == '-')
usage(which_usage);
argc--;
path_list = getenv("PATH");
if (!path_list)
path_list = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin";
path_parsed = malloc (strlen(path_list) + 1);
strcpy (path_parsed, path_list);
/* Replace colons with zeros in path_parsed and count them */
count = 1;
test = path_parsed;
while (1) {
tmp = strchr(test, ':');
if (tmp == NULL)
break;
*tmp = 0;
test = tmp + 1;
count++;
}
while(argc-- > 0) {
int i;
int found = FALSE;
test = path_parsed;
argv++;
for (i = 0; i < count; i++) {
strcpy (buf, test);
strcat (buf, "/");
strcat (buf, *argv);
if (stat (buf, &filestat) == 0
&& filestat.st_mode & S_IXUSR)
{
found = TRUE;
break;
}
test += (strlen(test) + 1);
}
if (found == TRUE)
printf ("%s\n", buf);
else
{
printf ("which: no %s in (%s)\n", *argv, path_list);
exit (FALSE);
}
}
return(TRUE);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
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