X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=functions%2Fstring%2Fstrspn.c;h=55cf29a084aa87f8ae2e5b2f8522b99e2f8a70d7;hp=47b28618b7a0004072d85fb0a0171b5c1957f3ff;hb=1d9d92ba957a0b8307c9a65c35867fde68e6533b;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec

diff --git a/functions/string/strspn.c b/functions/string/strspn.c
index 47b2861..55cf29a 100644
--- a/functions/string/strspn.c
+++ b/functions/string/strspn.c
@@ -1,8 +1,32 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* ----------------------------------------------------------------------------
+ * $Id$
+ * ----------------------------------------------------------------------------
+ * Public Domain C Library - http://pdclib.sourceforge.net
+ * This code is Public Domain. Use, modify, and redistribute at will.
+ * --------------------------------------------------------------------------*/
 
-size_t strspn( const char * s1, const char * s2 ) { /* TODO */ };
+#include <__size_t.h>
+
+size_t strspn( const char * src_1, const char * src_2 )
+{
+    size_t len = 0;
+    const char * p;
+    while ( src_1[ len ] != '\0' )
+    {
+        p = src_2;
+        while ( *p != '\0' )
+        {
+            if ( *src_1 == *p )
+            {
+                break;
+            }
+            ++p;
+        }
+        if ( *p == '\0' )
+        {
+            return len;
+        }
+        ++len;
+    }
+    return len;
+}