/* yesno.c - Yes/No questions

 * Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.

 *

 * This file is part of GnuPG.

 *

 * This file is free software; you can redistribute it and/or modify

 * it under the terms of either

 *

 *   - the GNU Lesser General Public License as published by the Free

 *     Software Foundation; either version 3 of the License, or (at

 *     your option) any later version.

 *

 * or

 *

 *   - the GNU General Public License as published by the Free

 *     Software Foundation; either version 2 of the License, or (at

 *     your option) any later version.

 *

 * or both in parallel, as here.

 *

 * This file 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 <https://www.gnu.org/licenses/>.

 */

#include <config.h>

#include <stdlib.h>

#include <errno.h>

#include "i18n.h"

#include "util.h"

/* Check the string S for a YES or NO answer and take care of

   localization.  If no valid string is given the value of DEF_ANSWER

   is returned.  Returns 1 for yes and 0 for no.  */

int

answer_is_yes_no_default (const char *s, int def_answer)

{

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_yes = _("yes");

  const char *short_yes = _("yY");

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_no = _("no");

  const char *short_no = _("nN");

  /* Note: we have to use the local dependent compare here. */

  if ( match_multistr(long_yes,s) )

    return 1;

  if ( *s && strchr( short_yes, *s ) && !s[1] )

    return 1;

  /* Test for "no" strings to catch ambiguities for the next test. */

  if ( match_multistr(long_no,s) )

    return 0;

  if ( *s && strchr( short_no, *s ) && !s[1] )

    return 0;

  /* Test for the english version (for those who are used to type yes). */

  if ( !ascii_strcasecmp(s, "yes" ) )

    return 1;

  if ( *s && strchr( "yY", *s ) && !s[1] )

    return 1;

  return def_answer;

}

int

answer_is_yes ( const char *s )

{

  return answer_is_yes_no_default(s,0);

}

/****************

 * Return 1 for yes, -1 for quit, or 0 for no

 */

int

answer_is_yes_no_quit ( const char *s )

{

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_yes = _("yes");

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_no = _("no");

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_quit = _("quit");

  const char *short_yes = _("yY");

  const char *short_no = _("nN");

  const char *short_quit = _("qQ");

  /* Note: we have to use a local dependent compare here. */

  if ( match_multistr(long_no,s) )

    return 0;

  if ( match_multistr(long_yes,s) )

    return 1;

  if ( match_multistr(long_quit,s) )

    return -1;

  if ( *s && strchr( short_no, *s ) && !s[1] )

    return 0;

  if ( *s && strchr( short_yes, *s ) && !s[1] )

      return 1;

  if ( *s && strchr( short_quit, *s ) && !s[1] )

    return -1;

  /* but not here. */

  if ( !ascii_strcasecmp(s, "yes" ) )

    return 1;

  if ( !ascii_strcasecmp(s, "quit" ) )

      return -1;

  if ( *s && strchr( "yY", *s ) && !s[1] )

    return 1;

  if ( *s && strchr( "qQ", *s ) && !s[1] )

    return -1;

  return 0;

}

/*

   Return 1 for okay, 0 for cancel or DEF_ANSWER for default.

 */

int

answer_is_okay_cancel (const char *s, int def_answer)

{

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_okay = _("okay|okay");

  /* TRANSLATORS: See doc/TRANSLATE about this string. */

  const char *long_cancel = _("cancel|cancel");

  const char *short_okay = _("oO");

  const char *short_cancel = _("cC");

  /* Note: We have to use the locale dependent compare. */

  if ( match_multistr(long_okay,s) )

    return 1;

  if ( match_multistr(long_cancel,s) )

    return 0;

  if ( *s && strchr( short_okay, *s ) && !s[1] )

    return 1;

  if ( *s && strchr( short_cancel, *s ) && !s[1] )

    return 0;

  /* Always test for the English values (not locale here). */

  if ( !ascii_strcasecmp(s, "okay" ) )

    return 1;

  if ( !ascii_strcasecmp(s, "ok" ) )

    return 1;

  if ( !ascii_strcasecmp(s, "cancel" ) )

    return 0;

  if ( *s && strchr( "oO", *s ) && !s[1] )

    return 1;

  if ( *s && strchr( "cC", *s ) && !s[1] )

    return 0;

  return def_answer;

}