1 files changed, 150 insertions, 0 deletions
diff --git a/common/yesno.c b/common/yesno.c
new file mode 100644
index 0000000..ebe8d82
--- /dev/null
+++ b/common/yesno.c
@@ -0,0 +1,150 @@
+/* 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;
+}