Added #ifdef to allow regression against system lib.

[pdclib] / functions / string / strlen.c

diff --git a/functions/string/strlen.c b/functions/string/strlen.c
index 9dfc38fed0a058172142e2441820e6b2aaffa1c0..17ab3cfd948b4331b43904a9f8f959b6db011347 100644 (file)
--- a/functions/string/strlen.c
+++ b/functions/string/strlen.c
@@ -1,29 +1,37 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
 
-size_t strlen( const char * s ) { /* TODO */ };
+/* Release $Name$ */
 
-/* Therx code
+/* strlen( const char * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+#ifndef REGTEST
+
+size_t strlen( const char * s )
 {
-    const char * start = s1;
-    while (*s1)
+    size_t rc = 0;
+    while ( s[rc] )
     {
-        s1++;
+        ++rc;
     }
-    return s1 - start;
+    return rc;
 }
-*/
 
-/* PDPC code - unreviewed
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
 {
-    const char *p;
-    
-    p = s;
-    while (*p != '\0') p++;
-    return ((size_t)(p - s));
+    BEGIN_TESTS;
+    TESTCASE( strlen( abcde ) == 5 );
+    TESTCASE( strlen( "" ) == 0 );
+    return TEST_RESULTS;
 }
-*/
+#endif