X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrcoll.c;h=a139adb4728171c50fecc6d0941d3820d1eaa173;hb=d446b1531b82def47b9b684517a7c629c7400aab;hp=c89b8cfd3bdc88bc1829ad014a5b39a372d3a492;hpb=19b4cc9a30c2ede7a0cd6c417b5f26851376b708;p=pdclib

diff --git a/functions/string/strcoll.c b/functions/string/strcoll.c
index c89b8cf..a139adb 100644
--- a/functions/string/strcoll.c
+++ b/functions/string/strcoll.c
@@ -1,15 +1,43 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* strcoll( const char *, const char * )
 
-// TODO: Dummy function, does not support locales.
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
 
-int strcmp( const char * src_1, const char * src_2 );
+#include <string.h>
 
-int strcoll( const char * src_1, const char * src_2 )
+#ifndef REGTEST
+
+#include <locale.h>
+
+int strcoll( const char * s1, const char * s2 )
+{
+    const _PDCLIB_ctype_t * ctype = _PDCLIB_lconv.ctype;
+
+    while ( ( *s1 ) && ( ctype[(unsigned char)*s1].collation == ctype[(unsigned char)*s2].collation ) )
+    {
+        ++s1;
+        ++s2;
+    }
+    return ( ctype[(unsigned char)*s1].collation == ctype[(unsigned char)*s2].collation );
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+int main( void )
 {
-    return strcmp( src_1, src_2 );
+    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