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/* Utility to help print --version output in a consistent format.
Copyright (C) 1999, 2000, 2001, 2002, 2003 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 2, 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, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by Jim Meyering. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unlocked-io.h"
#include "version-etc.h"
#include "xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
/* Default copyright goes to the FSF. */
char* version_etc_copyright =
/* Do *not* mark this string for translation. */
"Copyright (C) 2003 Free Software Foundation, Inc.";
/* Like version_etc, below, but with the NULL-terminated author list
provided via a variable of type va_list. */
void
version_etc_va (FILE *stream,
char const *command_name, char const *package,
char const *version, va_list authors)
{
unsigned int n_authors;
va_list saved_authors;
#ifdef __va_copy
__va_copy (saved_authors, authors);
#else
saved_authors = authors;
#endif
for (n_authors = 0; va_arg (authors, char const *); ++n_authors)
{
/* empty */
}
va_end (authors);
if (n_authors == 0)
abort ();
if (command_name)
fprintf (stream, "%s (%s) %s\n", command_name, package, version);
else
fprintf (stream, "%s %s\n", package, version);
switch (n_authors)
{
case 1:
vfprintf (stream, _("Written by %s.\n"), saved_authors);
break;
case 2:
vfprintf (stream, _("Written by %s and %s.\n"), saved_authors);
break;
case 3:
vfprintf (stream, _("Written by %s, %s, and %s.\n"), saved_authors);
break;
case 4:
vfprintf (stream, _("Written by %s, %s, %s, and %s.\n"), saved_authors);
break;
default:
{
/* Note that the following must have one `%s' and one `%%s'. */
#define FMT_TEMPLATE _("Written by %sand %%s.\n")
/* for the string "%s, %s, ..., %s, " */
size_t s_len = (n_authors - 1) * strlen ("%s, ");
char *s_fmt = xmalloc (s_len + 1);
/* This could be a few bytes tighter, but don't bother because
that'd just make it a little more fragile. */
char *full_fmt = xmalloc (strlen (FMT_TEMPLATE) + s_len + 1);
unsigned int i;
char *s = s_fmt;
for (i = 0; i < n_authors - 1; i++)
s = stpcpy (s, "%s, ");
sprintf (full_fmt, FMT_TEMPLATE, s_fmt);
free (s_fmt);
vfprintf (stream, full_fmt, saved_authors);
free (full_fmt);
}
break;
}
va_end (saved_authors);
putc ('\n', stream);
fputs (version_etc_copyright, stream);
putc ('\n', stream);
fputs (_("\
This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"),
stream);
}
/* Display the --version information the standard way.
If COMMAND_NAME is NULL, the PACKAGE is asumed to be the name of
the program. The formats are therefore:
PACKAGE VERSION
or
COMMAND_NAME (PACKAGE) VERSION.
There must be one or more author names (each as a separate string)
after the VERSION argument, and the final argument must be `NULL'. */
void
version_etc (FILE *stream,
char const *command_name, char const *package,
char const *version, ...)
{
va_list authors;
va_start (authors, version);
version_etc_va (stream, command_name, package, version, authors);
}
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