1 files changed, 96 insertions, 0 deletions
diff --git a/common/yesno.c b/common/yesno.c
new file mode 100644
index 000000000..2a96b4e5d
--- /dev/null
+++ b/common/yesno.c
@@ -0,0 +1,96 @@
+/* yesno.c - Yes/No questions
+ * Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "i18n.h"
+#include "util.h"
+
+int
+answer_is_yes_no_default( const char *s, int def_answer )
+{
+    const char *long_yes = _("yes");
+    const char *short_yes = _("yY");
+    const char *long_no = _("no");
+    const char *short_no = _("nN");
+
+    /* Note: we have to use the local dependent strcasecmp here */
+    if( !strcasecmp(s, long_yes ) )
+	return 1;
+    if( *s && strchr( short_yes, *s ) && !s[1] )
+	return 1;
+    /* test for no strings to catch ambiguities for the next test */
+    if( !strcasecmp(s, long_no ) )
+	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 )
+{
+    const char *long_yes = _("yes");
+    const char *long_no = _("no");
+    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 the locale dependent strcasecmp */
+    if( !strcasecmp(s, long_no ) )
+	return 0;
+    if( !strcasecmp(s, long_yes ) )
+	return 1;
+    if( !strcasecmp(s, long_quit ) )
+	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;
+}