/*
* Which implementation for busybox
*
- * Copyright (C) 2000 by Lineo, inc.
+ * Copyright (C) 1999,2000,2001 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
*
*/
-#include "internal.h"
+/* getopt not needed */
+#include <string.h>
#include <stdio.h>
-#include <dirent.h>
-
+#include <stdlib.h>
+#include "busybox.h"
extern int which_main(int argc, char **argv)
{
- char *path_list, *test, *tmp;
- struct dirent *next;
+ char *path_list, *path_n;
+ struct stat filestat;
+ int i, count=1, found, status = EXIT_SUCCESS;
- if (**(argv + 1) == '-') {
- usage("which [COMMAND ...]\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nLocates a COMMAND.\n"
-#endif
- );
- }
+ if (argc <= 1 || **(argv + 1) == '-')
+ show_usage();
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);
- }
+ /* Replace colons with zeros in path_parsed and count them */
+ for(i=strlen(path_list); i > 0; i--)
+ if (path_list[i]==':') {
+ path_list[i]=0;
+ count++;
+ }
+
+ while(argc-- > 0) {
+ path_n = path_list;
+ argv++;
+ found = 0;
+ for (i = 0; i < count; i++) {
+ char *buf;
+ buf = concat_path_file(path_n, *argv);
+ if (stat (buf, &filestat) == 0
+ && filestat.st_mode & S_IXUSR)
+ {
+ puts(buf);
+ found = 1;
+ break;
}
+ free(buf);
+ path_n += (strlen(path_n) + 1);
}
+ if (!found)
+ status = EXIT_FAILURE;
}
- exit(TRUE);
+ return status;
}
/*