1 files changed, 96 insertions, 0 deletions
diff --git a/busybox/debianutils/which.c b/busybox/debianutils/which.c
new file mode 100644
index 0000000..999dded
--- /dev/null
+++ b/busybox/debianutils/which.c
@@ -0,0 +1,96 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Which implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.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
+ *
+ * Based on which from debianutils
+ */
+
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "busybox.h"
+
+
+extern int which_main(int argc, char **argv)
+{
+	char *path_list;
+	int i, count=1, status = EXIT_SUCCESS;
+
+	if (argc <= 1 || **(argv + 1) == '-') {
+		bb_show_usage();
+	}
+	argc--;
+
+	path_list = getenv("PATH");
+	if (path_list != NULL) {
+		for (i=strlen(path_list); i > 0; i--) {
+			if (path_list[i]==':') {
+				path_list[i]=0;
+				count++;
+			}
+		}
+	} else {
+		path_list = "/bin\0/sbin\0/usr/bin\0/usr/sbin\0/usr/local/bin";
+		count = 5;
+	}
+
+	while (argc-- > 0) {
+		char *buf;
+		char *path_n;
+		char found = 0;
+		argv++;
+
+		/*
+		 * Check if we were given the full path, first.
+		 * Otherwise see if the file exists in our $PATH.
+		 */
+		path_n = path_list;
+		buf = *argv;
+		if (access(buf, X_OK) == 0) {
+			found = 1;
+		} else {
+			for (i = 0; i < count; i++) {
+				buf = concat_path_file(path_n, *argv);
+				if (access(buf, X_OK) == 0) {
+					found = 1;
+					break;
+				}
+				free(buf);
+				path_n += (strlen(path_n) + 1);
+			}
+		}
+		if (found) {
+			puts(buf);
+		} else {
+			status = EXIT_FAILURE;
+		}
+	}
+	return status;
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/