Comment cleanups.

[pdclib] / functions / string / strcoll.c

diff --git a/functions/string/strcoll.c b/functions/string/strcoll.c
index 898eeb565d49619a03092693979e8957a04f80c6..461f80925311ff1e429b3b37e9507a241143dc58 100644 (file)
--- a/functions/string/strcoll.c
+++ b/functions/string/strcoll.c
@@ -1,8 +1,39 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int strcoll( const char * s1, const char * s2 ) { /* TODO */ };
+/* strcoll( 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>
+
+#ifndef REGTEST
+
+#include <locale.h>
+
+int strcoll( const char * s1, const char * s2 )
+{
+    while ( ( *s1 ) && ( _PDCLIB_lconv.ctype[(unsigned char)*s1].collation == _PDCLIB_lconv.ctype[(unsigned char)*s2].collation ) )
+    {
+        ++s1;
+        ++s2;
+    }
+    return ( _PDCLIB_lconv.ctype[(unsigned char)*s1].collation == _PDCLIB_lconv.ctype[(unsigned char)*s2].collation );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    char cmpabcde[] = "abcde";
+    char empty[] = "";
+    TESTCASE( strcmp( abcde, cmpabcde ) == 0 );
+    TESTCASE( strcmp( abcde, abcdx ) < 0 );
+    TESTCASE( strcmp( abcdx, abcde ) > 0 );
+    TESTCASE( strcmp( empty, abcde ) < 0 );
+    TESTCASE( strcmp( abcde, empty ) > 0 );
+    return TEST_RESULTS;
+}
+#endif