/* hello.c -- print a greeting message and exit. Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2006, 2007, 2008, 2010, 2011 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 . */ #include #include "system.h" #include "progname.h" static const struct option longopts[] = { { "greeting", required_argument, NULL, 'g' }, { "help", no_argument, NULL, 'h' }, { "next-generation", no_argument, NULL, 'n' }, { "traditional", no_argument, NULL, 't' }, { "version", no_argument, NULL, 'v' }, { NULL, 0, NULL, 0 } }; /* Different types of greetings; only one per invocation. */ typedef enum { greet_gnu, greet_new, greet_traditional, greet_user } greeting_type; /* Forward declarations. */ static void print_help (void); static void print_version (void); int main (int argc, char *argv[]) { int optc; int lose = 0; const char *greeting_msg = NULL; greeting_type g = greet_gnu; set_program_name (argv[0]); /* Set locale via LC_ALL. */ setlocale (LC_ALL, ""); #if ENABLE_NLS /* Set the text message domain. */ bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); #endif /* Even exiting has subtleties. On exit, if any writes failed, change the exit status. The /dev/full device on GNU/Linux can be used for testing; for instance, hello >/dev/full should exit unsuccessfully. This is implemented in the Gnulib module "closeout". */ atexit (close_stdout); while ((optc = getopt_long (argc, argv, "g:hntv", longopts, NULL)) != -1) switch (optc) { /* --help and --version exit immediately, per GNU coding standards. */ case 'v': print_version (); exit (EXIT_SUCCESS); break; case 'g': greeting_msg = optarg; g = greet_user; break; case 'h': print_help (); exit (EXIT_SUCCESS); break; case 'n': g = greet_new; break; case 't': g = greet_traditional; break; default: lose = 1; break; } if (lose || optind < argc) { /* Print error message and exit. */ if (optind < argc) fprintf (stderr, _("%s: extra operand: %s\n"), program_name, argv[optind]); fprintf (stderr, _("Try `%s --help' for more information.\n"), program_name); exit (EXIT_FAILURE); } /* Print greeting message and exit. */ if (g == greet_traditional) printf (_("hello, world\n")); else if (g == greet_new) /* TRANSLATORS: Use box drawing characters or other fancy stuff if your encoding (e.g., UTF-8) allows it. If done so add the following note, please: [Note: For best viewing results use a UTF-8 locale, please.] */ printf (_("\ +---------------+\n\ | Hello, world! |\n\ +---------------+\n\ ")); else if (g == greet_user) puts (greeting_msg); else if (g == greet_gnu) puts (_("Hello, world!")); else { /* No need for this impossible message to be translated. */ fprintf (stderr, "Impossible hello value %d\n", g); exit (EXIT_FAILURE); } exit (EXIT_SUCCESS); } /* Print help info. This long message is split into several pieces to help translators be able to align different blocks and identify the various pieces. */ static void print_help (void) { /* TRANSLATORS: --help output 1 (synopsis) no-wrap */ printf (_("\ Usage: %s [OPTION]...\n"), program_name); /* TRANSLATORS: --help output 2 (brief description) no-wrap */ fputs (_("\ Print a friendly, customizable greeting.\n"), stdout); puts (""); /* TRANSLATORS: --help output 3: options 1/2 no-wrap */ fputs (_("\ -h, --help display this help and exit\n\ -v, --version display version information and exit\n"), stdout); puts (""); /* TRANSLATORS: --help output 4: options 2/2 no-wrap */ fputs (_("\ -t, --traditional use traditional greeting format\n\ -n, --next-generation use next-generation greeting format\n\ -g, --greeting=TEXT use TEXT as the greeting message\n"), stdout); printf ("\n"); /* TRANSLATORS: --help output 5+ (reports) TRANSLATORS: the placeholder indicates the bug-reporting address for this application. Please add _another line_ with the address for translation bugs. no-wrap */ printf (_("\ Report bugs to: %s\n"), PACKAGE_BUGREPORT); #ifdef PACKAGE_PACKAGER_BUG_REPORTS printf (_("Report %s bugs to: %s\n"), PACKAGE_PACKAGER, PACKAGE_PACKAGER_BUG_REPORTS); #endif #ifdef PACKAGE_URL printf (_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL); #else printf (_("%s home page: \n"), PACKAGE_NAME, PACKAGE); #endif fputs (_("General help using GNU software: \n"), stdout); } /* Print version and copyright information. */ static void print_version (void) { printf ("hello (GNU %s) %s\n", PACKAGE, VERSION); /* xgettext: no-wrap */ puts (""); /* It is important to separate the year from the rest of the message, as done here, to avoid having to retranslate the message when a new year comes around. */ printf (_("\ Copyright (C) %s Free Software Foundation, Inc.\n\ License GPLv3+: GNU GPL version 3 or later \n\ This is free software: you are free to change and redistribute it.\n\ There is NO WARRANTY, to the extent permitted by law.\n"), "2011"); }