Add strcasecmp() and strncasecmp() to libkern and connect to the build.

1 files changed, 69 insertions, 0 deletions

diff --git a/sys/libkern/strcasecmp.c b/sys/libkern/strcasecmp.c
new file mode 100644
index 0000000..8e65827
--- /dev/null
+++ b/sys/libkern/strcasecmp.c
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/ctype.h>
+#include <sys/libkern.h>
+
+int
+strcasecmp(const char *s1, const char *s2)
+{
+	const u_char *us1 = (const u_char *)s1, *us2 = (const u_char *)s2;
+
+	while (tolower(*us1) == tolower(*us2++)) {
+		if (*us1++ == '\0')
+			return (0);
+	}
+	return (tolower(*us1) - tolower(*--us2));
+}
+
+int
+strncasecmp(const char *s1, const char *s2, size_t n)
+{
+
+	if (n != 0) {
+		const u_char *us1 = (const u_char *)s1;
+		const u_char *us2 = (const u_char *)s2;
+
+		do {
+			if (tolower(*us1) != tolower(*us2++))
+				return (tolower(*us1) - tolower(*--us2));
+			if (*us1++ == '\0')
+				break;
+		} while (--n != 0);
+	}
+	return (0);
+}