tar 1.13
This commit is contained in:
Paul Eggert
194
tests/genfile.c
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194
tests/genfile.c
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/* Generate a file containing some preset patterns.
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Copyright <20> 1995, 1996, 1997 Free Software Foundation, Inc.
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Fran<61>ois Pinard <pinard@iro.umontreal.ca>, 1995.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "system.h"
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#include <getopt.h>
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#ifndef EXIT_SUCCESS
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# define EXIT_SUCCESS 0
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#endif
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#ifndef EXIT_FAILURE
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# define EXIT_FAILURE 1
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#endif
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enum pattern
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{
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DEFAULT,
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ZEROS
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};
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/* The name this program was run with. */
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const char *program_name;
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/* If nonzero, display usage information and exit. */
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static int show_help = 0;
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/* If nonzero, print the version on standard output and exit. */
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static int show_version = 0;
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/* Length of file to generate. */
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static int file_length = 0;
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/* Pattern to generate. */
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static enum pattern pattern = DEFAULT;
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/*-----------------------------------------------.
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| Explain how to use the program, then get out. |
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`-----------------------------------------------*/
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void
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usage (int status)
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{
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if (status != EXIT_SUCCESS)
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fprintf (stderr, _("Try `%s --help' for more information.\n"),
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program_name);
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else
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{
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printf (_("Generate data files for GNU tar test suite.\n"));
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printf (_("\
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\n\
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Usage: %s [OPTION]...\n"), program_name);
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fputs (_("\
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If a long option shows an argument as mandatory, then it is mandatory\n\
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for the equivalent short option also.\n\
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\n\
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-l, --file-length=LENGTH LENGTH of generated file\n\
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-p, --pattern=PATTERN PATTERN is `default' or `zeros'\n\
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--help display this help and exit\n\
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--version output version information and exit\n"),
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stdout);
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}
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exit (status);
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}
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/*----------------------------------------------------------------------.
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| Main program. Decode ARGC arguments passed through the ARGV array of |
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| strings, then launch execution. |
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`----------------------------------------------------------------------*/
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/* Long options equivalences. */
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static const struct option long_options[] =
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{
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{"help", no_argument, &show_help, 1},
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{"length", required_argument, NULL, 'l'},
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{"pattern", required_argument, NULL, 'p'},
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{"version", no_argument, &show_version, 1},
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{0, 0, 0, 0},
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};
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const char *pattern_strings[] =
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{
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"default", /* 0 */
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"zeros", /* 1 */
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NULL
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};
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int
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main (int argc, char *const *argv)
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{
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int option_char; /* option character */
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int counter; /* general purpose counter */
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/* Decode command options. */
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program_name = argv[0];
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setlocale (LC_ALL, "");
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while (option_char = getopt_long (argc, argv, "l:p:", long_options, NULL),
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option_char != EOF)
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switch (option_char)
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{
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default:
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usage (EXIT_FAILURE);
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case '\0':
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break;
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case 'l':
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file_length = atoi (optarg);
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break;
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case 'p':
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switch (argmatch (optarg, pattern_strings))
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{
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case -2:
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error (0, 0, _("Ambiguous pattern `%s'"), optarg);
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usage (EXIT_FAILURE);
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case -1:
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error (0, 0, _("Unknown pattern `%s'"), optarg);
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usage (EXIT_FAILURE);
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case 0:
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pattern = DEFAULT;
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break;
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case 1:
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pattern = ZEROS;
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break;
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}
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break;
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}
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/* Process trivial options. */
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if (show_version)
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{
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printf ("genfile (GNU %s) %s\n", PACKAGE, VERSION);
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fputs (_("\
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\n\
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Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.\n"),
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stdout);
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fputs (_("\
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This is free software; see the source for copying conditions. There is NO\n\
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"),
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stdout);
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fputs (_("\
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\n\
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Written by Fran<61>ois Pinard <pinard@iro.umontreal.ca>.\n"),
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stdout);
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exit (EXIT_SUCCESS);
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}
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if (show_help)
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usage (EXIT_SUCCESS);
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if (optind < argc)
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usage (EXIT_FAILURE);
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/* Generate file. */
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switch (pattern)
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{
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case DEFAULT:
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for (counter = 0; counter < file_length; counter++)
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putchar (counter & 255);
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break;
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case ZEROS:
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for (counter = 0; counter < file_length; counter++)
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putchar (0);
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break;
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}
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exit (0);
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}
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