* Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "busybox.h"
+#include "libbb.h"
-int printenv_main(int argc, char **argv);
-int printenv_main(int argc, char **argv)
+int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int printenv_main(int argc UNUSED_PARAM, char **argv)
{
- extern char **environ;
- int e = 0;
+ int exit_code = EXIT_SUCCESS;
/* no variables specified, show whole env */
- if (argc == 1)
+ if (!argv[1]) {
+ int e = 0;
while (environ[e])
puts(environ[e++]);
-
- /* search for specified variables and print them out if found */
- else {
- int i;
- size_t l;
+ } else {
+ /* search for specified variables and print them out if found */
char *arg, *env;
- for (i=1; (arg = argv[i]); ++i)
- for (; (env = environ[e]); ++e) {
- l = strlen(arg);
- if (!strncmp(env, arg, l) && env[l] == '=')
- puts(env + l + 1);
- }
+ while ((arg = *++argv) != NULL) {
+ env = getenv(arg);
+ if (env)
+ puts(env);
+ else
+ exit_code = EXIT_FAILURE;
+ }
}
- fflush_stdout_and_exit(0);
+ fflush_stdout_and_exit(exit_code);
}