1 files changed, 68 insertions, 0 deletions
diff --git a/private/crt32/string/strstr.c b/private/crt32/string/strstr.c
new file mode 100644
index 000000000..d523dbbef
--- /dev/null
+++ b/private/crt32/string/strstr.c
@@ -0,0 +1,68 @@
+/***
+*strstr.c - search for one string inside another
+*
+*	Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+*	defines strstr() - search for one string inside another
+*
+*Revision History:
+*	02-27-90   GJF	Fixed calling type, #include <cruntime.h>, fixed
+*			copyright.
+*	08-14-90   SBM	Removed now redundant #include <stddef.h>
+*	10-02-90   GJF	New-style function declarator.
+*	03-14-94   GJF	If string2 is empty, return string1.
+*
+*******************************************************************************/
+
+#include <cruntime.h>
+#include <string.h>
+
+/***
+*char *strstr(string1, string2) - search for string2 in string1
+*
+*Purpose:
+*	finds the first occurrence of string2 in string1
+*
+*Entry:
+*	char *string1 - string to search in
+*	char *string2 - string to search for
+*
+*Exit:
+*	returns a pointer to the first occurrence of string2 in
+*	string1, or NULL if string2 does not occur in string1
+*
+*Uses:
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+char * _CALLTYPE1 strstr (
+	const char * str1,
+	const char * str2
+	)
+{
+	char *cp = (char *) str1;
+	char *s1, *s2;
+
+	if ( !*str2 )
+	    return(str1);
+
+	while (*cp)
+	{
+		s1 = cp;
+		s2 = (char *) str2;
+
+		while ( *s1 && *s2 && !(*s1-*s2) )
+			s1++, s2++;
+
+		if (!*s2)
+			return(cp);
+
+		cp++;
+	}
+
+	return(NULL);
+
+}