From: Alan Cox <alan@linux.intel.com>
Date: Fri, 2 Jan 2015 23:06:15 +0000 (+0000)
Subject: strcasestr: another BSDism
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=7ea9309a6dab417fa6f9982ac5e3ecef25a68634;p=FUZIX.git

strcasestr: another BSDism
---

diff --git a/Library/include/string.h b/Library/include/string.h
index 8d60d3ce..858f7728 100644
--- a/Library/include/string.h
+++ b/Library/include/string.h
@@ -51,6 +51,9 @@ extern size_t strspn __P ((const char *, const char *));
 
 extern size_t strlcpy __P((char *, const char *, size_t));
 extern size_t strlcat __P((char *, const char *, size_t));
+
+extern char *strcasestr __P((const char *, const char *));
+
 #ifdef	z80
 #pagma inline(memcpy)
 #pagma inline(memset)
diff --git a/Library/libs/strcasestr.c b/Library/libs/strcasestr.c
new file mode 100644
index 00000000..67cd83da
--- /dev/null
+++ b/Library/libs/strcasestr.c
@@ -0,0 +1,20 @@
+/* Another BSDism */
+
+#include <string.h>
+#include <ctype.h>
+
+char *strcasestr(const char *needle, const char *haystack)
+{
+  size_t s = strlen(needle);
+  char c = tolower(needle[0]);
+
+  while(*haystack) {
+    /* check the lead byte here for speed */
+    if (tolower(*haystack) == c) {
+      if (strncasecmp(needle, haystack, s) == 0)
+        return haystack;
+    }
+    haystack++;
+  }
+  return NULL;
+}