/* Print --version and bug-reporting information in a consistent format.

   Copyright (C) 1999-2017 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 <http://www.gnu.org/licenses/>.  */

/* Written by Jim Meyering. */

#include <config.h>

/* Specification.  */

#include "version-etc.h"

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#if USE_UNLOCKED_IO

# include "unlocked-io.h"

#endif

#include "gettext.h"

#define _(msgid) gettext (msgid)

/* If you use AM_INIT_AUTOMAKE's no-define option,

   PACKAGE is not defined.  Use PACKAGE_TARNAME instead.  */

#if ! defined PACKAGE && defined PACKAGE_TARNAME

# define PACKAGE PACKAGE_TARNAME

#endif

enum { COPYRIGHT_YEAR = 2017 };

/* The three functions below display the --version information the

   standard way.

   If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of

   the program.  The formats are therefore:

   PACKAGE VERSION

   or

   COMMAND_NAME (PACKAGE) VERSION.

   The functions differ in the way they are passed author names. */

/* Display the --version information the standard way.

   Author names are given in the array AUTHORS. N_AUTHORS is the

   number of elements in the array. */

void

version_etc_arn (FILE *stream,

                 const char *command_name, const char *package,

                 const char *version,

                 const char * const * authors, size_t n_authors)

{

  if (command_name)

    fprintf (stream, "%s (%s) %s\n", command_name, package, version);

  else

    fprintf (stream, "%s %s\n", package, version);

#ifdef PACKAGE_PACKAGER

# ifdef PACKAGE_PACKAGER_VERSION

  fprintf (stream, _("Packaged by %s (%s)\n"), PACKAGE_PACKAGER,

           PACKAGE_PACKAGER_VERSION);

# else

  fprintf (stream, _("Packaged by %s\n"), PACKAGE_PACKAGER);

# endif

#endif

  /* TRANSLATORS: Translate "(C)" to the copyright symbol

     (C-in-a-circle), if this symbol is available in the user's

     locale.  Otherwise, do not translate "(C)"; leave it as-is.  */

  fprintf (stream, version_etc_copyright, _("(C)"), COPYRIGHT_YEAR);

  fputs (_("\

\n\

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\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\

\n\

"),

         stream);

  switch (n_authors)

    {

    case 0:

      /* The caller must provide at least one author name.  */

      abort ();

    case 1:

      /* TRANSLATORS: %s denotes an author name.  */

      fprintf (stream, _("Written by %s.\n"), authors[0]);

      break;

    case 2:

      /* TRANSLATORS: Each %s denotes an author name.  */

      fprintf (stream, _("Written by %s and %s.\n"), authors[0], authors[1]);

      break;

    case 3:

      /* TRANSLATORS: Each %s denotes an author name.  */

      fprintf (stream, _("Written by %s, %s, and %s.\n"),

               authors[0], authors[1], authors[2]);

      break;

    case 4:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("Written by %s, %s, %s,\nand %s.\n"),

               authors[0], authors[1], authors[2], authors[3]);

      break;

    case 5:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("Written by %s, %s, %s,\n%s, and %s.\n"),

               authors[0], authors[1], authors[2], authors[3], authors[4]);

      break;

    case 6:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, and %s.\n"),

               authors[0], authors[1], authors[2], authors[3], authors[4],

               authors[5]);

      break;

    case 7:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("Written by %s, %s, %s,\n%s, %s, %s, and %s.\n"),

               authors[0], authors[1], authors[2], authors[3], authors[4],

               authors[5], authors[6]);

      break;

    case 8:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("\

Written by %s, %s, %s,\n%s, %s, %s, %s,\nand %s.\n"),

                authors[0], authors[1], authors[2], authors[3], authors[4],

                authors[5], authors[6], authors[7]);

      break;

    case 9:

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("\

Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, and %s.\n"),

               authors[0], authors[1], authors[2], authors[3], authors[4],

               authors[5], authors[6], authors[7], authors[8]);

      break;

    default:

      /* 10 or more authors.  Use an abbreviation, since the human reader

         will probably not want to read the entire list anyway.  */

      /* TRANSLATORS: Each %s denotes an author name.

         You can use line breaks, estimating that each author name occupies

         ca. 16 screen columns and that a screen line has ca. 80 columns.  */

      fprintf (stream, _("\

Written by %s, %s, %s,\n%s, %s, %s, %s,\n%s, %s, and others.\n"),

                authors[0], authors[1], authors[2], authors[3], authors[4],

                authors[5], authors[6], authors[7], authors[8]);

      break;

    }

}

/* Display the --version information the standard way.  See the initial

   comment to this module, for more information.

   Author names are given in the NULL-terminated array AUTHORS. */

void

version_etc_ar (FILE *stream,

                const char *command_name, const char *package,

                const char *version, const char * const * authors)

{

  size_t n_authors;

  for (n_authors = 0; authors[n_authors]; n_authors++)

    ;

  version_etc_arn (stream, command_name, package, version, authors, n_authors);

}

/* Display the --version information the standard way.  See the initial

   comment to this module, for more information.

   Author names are given in the NULL-terminated va_list AUTHORS. */

void

version_etc_va (FILE *stream,

                const char *command_name, const char *package,

                const char *version, va_list authors)

{

  size_t n_authors;

  const char *authtab[10];

  for (n_authors = 0;

       n_authors < 10

         && (authtab[n_authors] = va_arg (authors, const char *)) != NULL;

       n_authors++)

    ;

  version_etc_arn (stream, command_name, package, version,

                   authtab, n_authors);

}

/* Display the --version information the standard way.

   If COMMAND_NAME is NULL, the PACKAGE is assumed to be the name of

   the program.  The formats are therefore:

   PACKAGE VERSION

   or

   COMMAND_NAME (PACKAGE) VERSION.

   The authors names are passed as separate arguments, with an additional

   NULL argument at the end.  */

void

version_etc (FILE *stream,

             const char *command_name, const char *package,

             const char *version, /* const char *author1, ...*/ ...)

{

  va_list authors;

  va_start (authors, version);

  version_etc_va (stream, command_name, package, version, authors);

  va_end (authors);

}

void

emit_bug_reporting_address (void)

{

  /* TRANSLATORS: The placeholder indicates the bug-reporting address

     for this package.  Please add _another line_ saying

     "Report translation bugs to <...>\n" with the address for translation

     bugs (typically your translation team's web or email address).  */

  printf (_("\nReport 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: <http://www.gnu.org/software/%s/>\n"),

          PACKAGE_NAME, PACKAGE);

#endif

  fputs (_("General help using GNU software: <http://www.gnu.org/gethelp/>\n"),

         stdout);

}