Libc-498.tar.gz

[apple/libc.git] / string / strcasecmp-fbsd.c

diff --git a/string/strcasecmp-fbsd.c b/string/strcasecmp-fbsd.c
new file mode 100644 (file)
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+++ b/string/strcasecmp-fbsd.c
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+/*
+ * Copyright (c) 1987, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcasecmp.c       8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/string/strcasecmp.c,v 1.6 2002/08/30 15:40:01 robert Exp $");
+
+#include "xlocale_private.h"
+
+#include <strings.h>
+#include <ctype.h>
+
+typedef unsigned char u_char;
+
+int
+strcasecmp_l(s1, s2, loc)
+       const char *s1, *s2;
+       locale_t loc;
+{
+       const u_char
+                       *us1 = (const u_char *)s1,
+                       *us2 = (const u_char *)s2;
+
+       NORMALIZE_LOCALE(loc);
+       while (tolower_l(*us1, loc) == tolower_l(*us2++, loc))
+               if (*us1++ == '\0')
+                       return (0);
+       return (tolower_l(*us1, loc) - tolower_l(*--us2, loc));
+}
+
+int
+strcasecmp(s1, s2)
+       const char *s1, *s2;
+{
+       return strcasecmp_l(s1, s2, __current_locale());
+}
+
+int
+strncasecmp_l(s1, s2, n, loc)
+       const char *s1, *s2;
+       size_t n;
+       locale_t loc;
+{
+       NORMALIZE_LOCALE(loc);
+       if (n != 0) {
+               const u_char
+                               *us1 = (const u_char *)s1,
+                               *us2 = (const u_char *)s2;
+
+               do {
+                       if (tolower_l(*us1, loc) != tolower_l(*us2++, loc))
+                               return (tolower_l(*us1, loc) - tolower_l(*--us2, loc));
+                       if (*us1++ == '\0')
+                               break;
+               } while (--n != 0);
+       }
+       return (0);
+}
+
+int
+strncasecmp(s1, s2, n)
+       const char *s1, *s2;
+       size_t n;
+{
+       return strncasecmp_l(s1, s2, n, __current_locale());
+}