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-rw-r--r--src/true.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/src/true.c b/src/true.c
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index 0000000..99170b6
--- /dev/null
+++ b/src/true.c
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+/* Exit with a status code indicating success.
+ Copyright (C) 1999-2022 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
+ the Free Software Foundation, either version 3 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, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include "system.h"
+
+/* Act like "true" by default; false.c overrides this. */
+#ifndef EXIT_STATUS
+# define EXIT_STATUS EXIT_SUCCESS
+#endif
+
+#if EXIT_STATUS == EXIT_SUCCESS
+# define PROGRAM_NAME "true"
+#else
+# define PROGRAM_NAME "false"
+#endif
+
+#define AUTHORS proper_name ("Jim Meyering")
+
+void
+usage (int status)
+{
+ printf (_("\
+Usage: %s [ignored command line arguments]\n\
+ or: %s OPTION\n\
+"),
+ program_name, program_name);
+ printf ("%s\n\n",
+ _(EXIT_STATUS == EXIT_SUCCESS
+ ? N_("Exit with a status code indicating success.")
+ : N_("Exit with a status code indicating failure.")));
+ fputs (HELP_OPTION_DESCRIPTION, stdout);
+ fputs (VERSION_OPTION_DESCRIPTION, stdout);
+ printf (USAGE_BUILTIN_WARNING, PROGRAM_NAME);
+ emit_ancillary_info (PROGRAM_NAME);
+ exit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+ /* Recognize --help or --version only if it's the only command-line
+ argument. */
+ if (argc == 2)
+ {
+ initialize_main (&argc, &argv);
+ set_program_name (argv[0]);
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ /* Note true(1) will return EXIT_FAILURE in the
+ edge case where writes fail with GNU specific options. */
+ atexit (close_stdout);
+
+ if (STREQ (argv[1], "--help"))
+ usage (EXIT_STATUS);
+
+ if (STREQ (argv[1], "--version"))
+ version_etc (stdout, PROGRAM_NAME, PACKAGE_NAME, Version, AUTHORS,
+ (char *) NULL);
+ }
+
+ return EXIT_STATUS;
+}