Added some of <string.h>.

[pdclib] / functions / string / strcspn.c

diff --git a/functions/string/strcspn.c b/functions/string/strcspn.c
new file mode 100644 (file)
index 0000000..0417d51
--- /dev/null
+++ b/functions/string/strcspn.c
@@ -0,0 +1,30 @@
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* strcspn( const char *, 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>
+
+size_t strcspn( const char * src_1, const char * src_2 )
+{
+    size_t len = 0;
+    const char * src_p;
+    while ( src_1[len] != '\0' )
+    {
+        src_p = src_2;
+        while ( *src_p != '\0' )
+        {
+            if ( src_1[len] == *src_p++ )
+            {
+                return len;
+            }
+        }
+        ++len;
+    }
+    return len;
+}