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28a8798c03
`Written by ...' part of --version output. Include stdarg.h, stdlib.h, string.h, and xalloc.h. (version_etc): Make this function variadic, with a NULL-terminated list of author name strings. (version_etc_va): New function.
148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
/* Utility to help print --version output in a consistent format.
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Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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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,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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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/* Written by Jim Meyering. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "unlocked-io.h"
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#include "version-etc.h"
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#include "xalloc.h"
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#include "gettext.h"
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#define _(msgid) gettext (msgid)
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/* Default copyright goes to the FSF. */
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char* version_etc_copyright =
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/* Do *not* mark this string for translation. */
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"Copyright (C) 2003 Free Software Foundation, Inc.";
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/* Like version_etc, below, but with the NULL-terminated author list
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provided via a variable of type va_list. */
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void
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version_etc_va (FILE *stream,
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char const *command_name, char const *package,
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char const *version, va_list authors)
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{
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unsigned int n_authors;
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va_list saved_authors;
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#ifdef __va_copy
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__va_copy (saved_authors, authors);
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#else
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saved_authors = authors;
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#endif
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for (n_authors = 0; va_arg (authors, char const *); ++n_authors)
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{
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/* empty */
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}
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va_end (authors);
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if (n_authors == 0)
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abort ();
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if (command_name)
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fprintf (stream, "%s (%s) %s\n", command_name, package, version);
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else
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fprintf (stream, "%s %s\n", package, version);
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switch (n_authors)
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{
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case 1:
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vfprintf (stream, _("Written by %s.\n"), saved_authors);
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break;
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case 2:
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vfprintf (stream, _("Written by %s and %s.\n"), saved_authors);
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break;
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case 3:
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vfprintf (stream, _("Written by %s, %s, and %s.\n"), saved_authors);
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break;
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case 4:
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vfprintf (stream, _("Written by %s, %s, %s, and %s.\n"), saved_authors);
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break;
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default:
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{
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/* Note that the following must have one `%s' and one `%%s'. */
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#define FMT_TEMPLATE _("Written by %sand %%s.\n")
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/* for the string "%s, %s, ..., %s, " */
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size_t s_len = (n_authors - 1) * strlen ("%s, ");
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char *s_fmt = xmalloc (s_len + 1);
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/* This could be a few bytes tighter, but don't bother because
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that'd just make it a little more fragile. */
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char *full_fmt = xmalloc (strlen (FMT_TEMPLATE) + s_len + 1);
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unsigned int i;
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char *s = s_fmt;
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for (i = 0; i < n_authors - 1; i++)
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s = stpcpy (s, "%s, ");
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sprintf (full_fmt, FMT_TEMPLATE, s_fmt);
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free (s_fmt);
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vfprintf (stream, full_fmt, saved_authors);
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free (full_fmt);
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}
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break;
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}
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va_end (saved_authors);
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putc ('\n', stream);
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fputs (version_etc_copyright, stream);
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putc ('\n', stream);
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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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stream);
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}
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/* Display the --version information the standard way.
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If COMMAND_NAME is NULL, the PACKAGE is asumed to be the name of
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the program. The formats are therefore:
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PACKAGE VERSION
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or
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COMMAND_NAME (PACKAGE) VERSION.
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There must be one or more author names (each as a separate string)
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after the VERSION argument, and the final argument must be `NULL'. */
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void
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version_etc (FILE *stream,
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char const *command_name, char const *package,
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char const *version, ...)
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{
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va_list authors;
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va_start (authors, version);
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version_etc_va (stream, command_name, package, version, authors);
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}
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