/* printenv -- print all or part of environment
- Copyright (C) 1989-1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1989-1997, 1999-2005 Free Software Foundation, Inc.
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
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. */
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Usage: printenv [variable...]
Exit status:
0 if all variables specified were found
1 if not
+ 2 if some other error occurred
David MacKenzie and Richard Mlynarik */
#include <getopt.h>
#include "system.h"
-#include "closeout.h"
#include "error.h"
#include "long-options.h"
+/* Exit status for syntax errors, etc. */
+enum { PRINTENV_FAILURE = 2 };
+
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "printenv"
-#define AUTHORS "David MacKenzie and Richard Mlynarik"
+#define AUTHORS "David MacKenzie", "Richard Mlynarik"
/* The name this program was run with. */
char *program_name;
-static struct option const long_options[] =
-{
- {0, 0, 0, 0}
-};
-
extern char **environ;
void
usage (int status)
{
- if (status != 0)
+ if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
- printf (_("Usage: %s [OPTION]... [VARIABLE]...\n"), program_name);
printf (_("\
+Usage: %s [VARIABLE]...\n\
+ or: %s OPTION\n\
If no environment VARIABLE specified, print them all.\n\
\n\
- --help display this help and exit\n\
- --version output version information and exit\n"));
- puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
+"),
+ program_name, program_name);
+ fputs (HELP_OPTION_DESCRIPTION, stdout);
+ fputs (VERSION_OPTION_DESCRIPTION, stdout);
+ printf (USAGE_BUILTIN_WARNING, PROGRAM_NAME);
+ printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
}
char **env;
char *ep, *ap;
int i;
- int matches = 0;
- int c;
- int exit_status;
+ bool ok;
+ initialize_main (&argc, &argv);
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
- parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
- AUTHORS, usage);
-
- while ((c = getopt_long (argc, argv, "", long_options, NULL)) != -1)
- {
- switch (c)
- {
- case 0:
- break;
+ initialize_exit_failure (PRINTENV_FAILURE);
+ atexit (close_stdout);
- default:
- usage (1);
- }
- }
+ parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
+ usage, AUTHORS, (char const *) NULL);
+ if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
+ usage (PRINTENV_FAILURE);
- if (optind == argc)
+ if (optind >= argc)
{
for (env = environ; *env != NULL; ++env)
puts (*env);
- exit_status = 0;
+ ok = true;
}
else
{
+ int matches = 0;
+
for (i = optind; i < argc; ++i)
{
+ bool matched = false;
+
for (env = environ; *env; ++env)
{
ep = *env;
if (*ep == '=' && *ap == '\0')
{
puts (ep + 1);
- ++matches;
+ matched = true;
break;
}
}
}
+
+ matches += matched;
}
- exit_status = (matches != argc - optind);
- }
- close_stdout_status (2);
+ ok = (matches == argc - optind);
+ }
- exit (exit_status);
+ exit (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}