From 37da2899f40661e3e9631e497da8dc59b971cbd0 Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Fri, 22 Dec 2006 17:07:39 +0000
Subject: 20060303a

---
 libkern/cistrstr.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 libkern/cistrstr.c

(limited to 'libkern/cistrstr.c')

diff --git a/libkern/cistrstr.c b/libkern/cistrstr.c
new file mode 100644
index 00000000..20d3205d
--- /dev/null
+++ b/libkern/cistrstr.c
@@ -0,0 +1,22 @@
+#include "lib9.h"
+
+char*
+cistrstr(char *s, char *sub)
+{
+	int c, csub, n;
+
+	csub = *sub;
+	if(csub == '\0')
+		return s;
+	if(csub >= 'A' && csub <= 'Z')
+		csub -= 'A' - 'a';
+	sub++;
+	n = strlen(sub);
+	for(; c = *s; s++){
+		if(c >= 'A' && c <= 'Z')
+			c -= 'A' - 'a';
+		if(c == csub && cistrncmp(s+1, sub, n) == 0)
+			return s;
+	}
+	return nil;
+}
-- 
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