PDCLIB-2: Pure wide character functions

[pdclib] / functions / wchar / wcsspn.c

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