2007-06-08 Jeff Johnston <jjohnstn@redhat.com>

        * libc/string/strcasestr.c: New file.
        * libc/include/string.h: Add strcasestr.
        * libc/string/strings.tex: Add strcasestr.
        * libc/string/Makefile.am: Ditto.
        * libc/string/Makefile.in: Regenerated.

1 files changed, 99 insertions, 0 deletions

diff --git a/newlib/libc/string/strcasestr.c b/newlib/libc/string/strcasestr.c
new file mode 100644
index 000000000..f1c14a08b
--- /dev/null
+++ b/newlib/libc/string/strcasestr.c
@@ -0,0 +1,99 @@
+/*
+FUNCTION
+	<<strcasestr>>---case-insensitive character string search
+	
+INDEX
+	strcasestr
+
+ANSI_SYNOPSIS
+	#include <string.h>
+	char *strcasestr(const char *<[s]>, const char *<[find]>);
+
+TRAD_SYNOPSIS
+	#include <string.h>
+	int strcasecmp(<[s]>, <[find]>)
+	char *<[s]>;
+	char *<[find]>;
+
+DESCRIPTION
+	<<strcasestr>> searchs the string <[s]> for
+	the first occurrence of the sequence <[find]>.  <<strcasestr>>
+	is identical to <<strstr>> except the search is
+	case-insensitive.
+
+RETURNS 
+
+	A pointer to the first case-insensitive occurrence of the sequence 
+	<[find]> or <<NULL>> if no match was found.
+
+PORTABILITY
+<<strcasestr>> is in the Berkeley Software Distribution.
+
+<<strcasestr>> requires no supporting OS subroutines. It uses
+tolower() from elsewhere in this library.
+
+QUICKREF
+	strcasestr
+*/
+
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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.
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/string/strcasestr.c,v 1.4 2007/01/09 00:28:12 imp Exp $");
+
+#include <ctype.h>
+#include <string.h>
+
+/*
+ * Find the first occurrence of find in s, ignore case.
+ */
+char *
+strcasestr(s, find)
+	const char *s, *find;
+{
+	char c, sc;
+	size_t len;
+
+	if ((c = *find++) != 0) {
+		c = tolower((unsigned char)c);
+		len = strlen(find);
+		do {
+			do {
+				if ((sc = *s++) == 0)
+					return (NULL);
+			} while ((char)tolower((unsigned char)sc) != c);
+		} while (strncasecmp(s, find, len) != 0);
+		s--;
+	}
+	return ((char *)s);
+}