Libc-1439.100.3.tar.gz

[apple/libc.git] / locale / FreeBSD / tolower.c

diff --git a/locale/FreeBSD/tolower.c b/locale/FreeBSD/tolower.c
index bac8445f2aaddbddb3a2c25c0b3d48fa0fc14987..298b321263339f00880cb50dd29589bc5a5d0a23 100644 (file)
--- a/locale/FreeBSD/tolower.c
+++ b/locale/FreeBSD/tolower.c
@@ -13,10 +13,6 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *     This product includes software developed by the University of
- *     California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -35,28 +31,53 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/locale/tolower.c,v 1.8 2002/08/21 16:19:56 mike Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/locale/tolower.c,v 1.13 2007/01/09 00:28:01 imp Exp $");
+  
+#include "xlocale_private.h"
 
+#include <ctype.h>
 #include <stdio.h>
-#include <rune.h>
+#include <runetype.h>
 
 __ct_rune_t
-___tolower(c)
+___tolower_l(c, loc)
        __ct_rune_t c;
+       locale_t loc;
 {
-       int x;
-       _RuneRange *rr = &_CurrentRuneLocale->maplower_ext;
-       _RuneEntry *re = rr->ranges;
+       size_t lim;
+       _RuneRange *rr;
+       _RuneEntry *base, *re;
 
        if (c < 0 || c == EOF)
                return(c);
 
-       for (x = 0; x < rr->nranges; ++x, ++re) {
-               if (c < re->min)
-                       return(c);
-               if (c <= re->max)
-                       return(re->map + c - re->min);
+       NORMALIZE_LOCALE(loc);
+       /*
+        * the following is not used by tolower(), but can be used by
+        * tolower_l().  This provides the oppurtunity to optimize tolower()
+        * when compatibility for Panther and lower is no longer needed
+        */
+       if (c < _CACHED_RUNES)
+               return loc->__lc_ctype->_CurrentRuneLocale.__maplower[c];
+       rr = &loc->__lc_ctype->_CurrentRuneLocale.__maplower_ext;
+       /* Binary search -- see bsearch.c for explanation. */
+       base = rr->__ranges;
+       for (lim = rr->__nranges; lim != 0; lim >>= 1) {
+               re = base + (lim >> 1);
+               if (re->__min <= c && c <= re->__max)
+                       return (re->__map + c - re->__min);
+               else if (c > re->__max) {
+                       base = re + 1;
+                       lim--;
+               }
        }
 
        return(c);
 }
+
+__ct_rune_t
+___tolower(c)
+       __ct_rune_t c;
+{
+       return ___tolower_l(c, __current_locale());
+}