X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fwchar%2Fwcsspn.c;fp=functions%2Fwchar%2Fwcsspn.c;h=34446bdb6d2b12a5ac46606d9cc51086b78ceafc;hb=14b5b78e19a79f590233caee7848e7cb19084088;hp=0000000000000000000000000000000000000000;hpb=41777e3d5dc655f59a8c3bcd071639e6878e853a;p=pdclib

diff --git a/functions/wchar/wcsspn.c b/functions/wchar/wcsspn.c
new file mode 100644
index 0000000..34446bd
--- /dev/null
+++ b/functions/wchar/wcsspn.c
@@ -0,0 +1,47 @@
+/* wcsspn( const wchar_t *, const wchar_t * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <wchar.h>
+
+#ifndef REGTEST
+
+size_t wcsspn( const wchar_t * s1, const wchar_t * s2 )
+{
+    size_t len = 0;
+    const wchar_t * p;
+    while ( s1[ len ] )
+    {
+        p = s2;
+        while ( *p )
+        {
+            if ( s1[len] == *p )
+            {
+                break;
+            }
+            ++p;
+        }
+        if ( ! *p )
+        {
+            return len;
+        }
+        ++len;
+    }
+    return len;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( wcsspn( wabcde, L"abc" ) == 3 );
+    TESTCASE( wcsspn( wabcde, L"b" ) == 0 );
+    TESTCASE( wcsspn( wabcde, wabcde ) == 5 );
+    return TEST_RESULTS;
+}
+#endif