common/yesno.c

   1 /* yesno.c - Yes/No questions
   2  * Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
   3  *
   4  * This file is part of GnuPG.
   5  *
   6  * GnuPG is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GnuPG is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <stdlib.h>
  22 #include <errno.h>
  23
  24 #include "i18n.h"
  25 #include "util.h"
  26
  27
  28 /* Check the string S for a YES or NO answer and take care of
  29    localization.  If no valid string is given the value of DEF_ANSWER
  30    is returned.  Returns 1 for yes and 0 for no.  */
  31 int
  32 answer_is_yes_no_default (const char *s, int def_answer)
  33 {
  34   /* TRANSLATORS: See doc/TRANSLATE about this string. */
  35   const char *long_yes = _("yes");
  36   const char *short_yes = _("yY");
  37   /* TRANSLATORS: See doc/TRANSLATE about this string. */
  38   const char *long_no = _("no");
  39   const char *short_no = _("nN");
  40
  41   /* Note: we have to use the local dependent compare here. */
  42   if ( match_multistr(long_yes,s) )
  43     return 1;
  44   if ( *s && strchr( short_yes, *s ) && !s[1] )
  45     return 1;
  46   /* Test for "no" strings to catch ambiguities for the next test. */
  47   if ( match_multistr(long_no,s) )
  48     return 0;
  49   if ( *s && strchr( short_no, *s ) && !s[1] )
  50     return 0;
  51   /* Test for the english version (for those who are used to type yes). */
  52   if ( !ascii_strcasecmp(s, "yes" ) )
  53     return 1;
  54   if ( *s && strchr( "yY", *s ) && !s[1] )
  55     return 1;
  56   return def_answer;
  57 }
  58
  59 int
  60 answer_is_yes ( const char *s )
  61 {
  62   return answer_is_yes_no_default(s,0);
  63 }
  64
  65 /****************
  66  * Return 1 for yes, -1 for quit, or 0 for no
  67  */
  68 int
  69 answer_is_yes_no_quit ( const char *s )
  70 {
  71   /* TRANSLATORS: See doc/TRANSLATE about this string. */
  72   const char *long_yes = _("yes");
  73   /* TRANSLATORS: See doc/TRANSLATE about this string. */
  74   const char *long_no = _("no");
  75   /* TRANSLATORS: See doc/TRANSLATE about this string. */
  76   const char *long_quit = _("quit");
  77   const char *short_yes = _("yY");
  78   const char *short_no = _("nN");
  79   const char *short_quit = _("qQ");
  80
  81   /* Note: we have to use a local dependent compare here. */
  82   if ( match_multistr(long_no,s) )
  83     return 0;
  84   if ( match_multistr(long_yes,s) )
  85     return 1;
  86   if ( match_multistr(long_quit,s) )
  87     return -1;
  88   if ( *s && strchr( short_no, *s ) && !s[1] )
  89     return 0;
  90   if ( *s && strchr( short_yes, *s ) && !s[1] )
  91       return 1;
  92   if ( *s && strchr( short_quit, *s ) && !s[1] )
  93     return -1;
  94   /* but not here. */
  95   if ( !ascii_strcasecmp(s, "yes" ) )
  96     return 1;
  97   if ( !ascii_strcasecmp(s, "quit" ) )
  98       return -1;
  99   if ( *s && strchr( "yY", *s ) && !s[1] )
 100     return 1;
 101   if ( *s && strchr( "qQ", *s ) && !s[1] )
 102     return -1;
 103   return 0;
 104 }
 105
 106 /*
 107    Return 1 for okay, 0 for for cancel or DEF_ANSWER for default.
 108  */
 109 int
 110 answer_is_okay_cancel (const char *s, int def_answer)
 111 {
 112   /* TRANSLATORS: See doc/TRANSLATE about this string. */
 113   const char *long_okay = _("okay|okay");
 114   /* TRANSLATORS: See doc/TRANSLATE about this string. */
 115   const char *long_cancel = _("cancel|cancel");
 116   const char *short_okay = _("oO");
 117   const char *short_cancel = _("cC");
 118
 119   /* Note: We have to use the locale dependent compare. */
 120   if ( match_multistr(long_okay,s) )
 121     return 1;
 122   if ( match_multistr(long_cancel,s) )
 123     return 0;
 124   if ( *s && strchr( short_okay, *s ) && !s[1] )
 125     return 1;
 126   if ( *s && strchr( short_cancel, *s ) && !s[1] )
 127     return 0;
 128   /* Always test for the English values (not locale here). */
 129   if ( !ascii_strcasecmp(s, "okay" ) )
 130     return 1;
 131   if ( !ascii_strcasecmp(s, "ok" ) )
 132     return 1;
 133   if ( !ascii_strcasecmp(s, "cancel" ) )
 134     return 0;
 135   if ( *s && strchr( "oO", *s ) && !s[1] )
 136     return 1;
 137   if ( *s && strchr( "cC", *s ) && !s[1] )
 138     return 0;
 139   return def_answer;
 140 }
 141