From 330fd2b5767110f29544131d4c72c77e0506b6df Mon Sep 17 00:00:00 2001 From: Erik Andersen Date: Fri, 19 May 2000 05:35:19 +0000 Subject: More libc portability updates, add in the website (which has not been archived previously). Wrote 'which' during the meeting today. -Erik --- which.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 which.c (limited to 'which.c') diff --git a/which.c b/which.c new file mode 100644 index 000000000..46c2204a5 --- /dev/null +++ b/which.c @@ -0,0 +1,73 @@ +/* vi: set sw=4 ts=4: */ +/* + * Which implementation for busybox + * + * Copyright (C) 2000 by Lineo, inc. + * Written by Erik Andersen , + * + * 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 +#include + + +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: +*/ -- cgit v1.2.3