* README: Document signed integer overflow situation more

[gnulib.git] / lib / rpmatch.c

diff --git a/lib/rpmatch.c b/lib/rpmatch.c
index 9cc5175..e5f79f8 100644 (file)
--- a/lib/rpmatch.c
+++ b/lib/rpmatch.c
@@ -1,6 +1,8 @@
 /* Determine whether string value is affirmation or negative response
    according to current locale's data.
-   Copyright (C) 1996, 1998 Free Software Foundation, Inc.
+
+   Copyright (C) 1996, 1998, 2000, 2002, 2003, 2006 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
@@ -14,33 +16,23 @@
 
    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.  */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-#if STDC_HEADERS || _LIBC
-# include <stddef.h>
-# include <stdlib.h>
-#else
-# ifndef NULL
-#  define NULL 0
-# endif
-#endif
+#include <config.h>
 
-#include <sys/types.h>
-#include <regex.h>
+#include <stddef.h>
+#include <stdlib.h>
 
 #if ENABLE_NLS
-# include <libintl.h>
-# define _(Text) gettext (Text)
-#else
-# define _(Text) Text
-#endif
+# include <sys/types.h>
+# include <limits.h>
+# include <regex.h>
+# include "gettext.h"
+# define _(msgid) gettext (msgid)
 
 static int
-try (const char *response, const char *pattern, const int match, const int nomatch, const char **lastp, regex_t *re)
+try (const char *response, const char *pattern, const int match,
+     const int nomatch, const char **lastp, regex_t *re)
 {
   if (pattern != *lastp)
     {
@@ -60,11 +52,13 @@ try (const char *response, const char *pattern, const int match, const int nomat
   /* See if the regular expression matches RESPONSE.  */
   return regexec (re, response, 0, NULL, 0) == 0 ? match : nomatch;
 }
+#endif
 
 
 int
 rpmatch (const char *response)
 {
+#if ENABLE_NLS
   /* Match against one of the response patterns, compiling the pattern
      first if necessary.  */
 
@@ -77,4 +71,9 @@ rpmatch (const char *response)
                         &yesexpr, &yesre))
          ? result
          : try (response, _("^[nN]"), 0, -1, &noexpr, &nore));
+#else
+  /* Test against "^[yY]" and "^[nN]", hardcoded to avoid requiring regex */
+  return (*response == 'y' || *response == 'Y' ? 1
+         : *response == 'n' || *response == 'N' ? 0 : -1);
+#endif
 }