X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Frename.c;h=f3ff01ee604a44ba46fc65c4802d8c17ef22ba9a;hb=f0ac10970fd7b6bca57495e1aa41517c1e673110;hp=5cb5665f940bf79913bbab0cf2fe34b7c7cf805b;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/rename.c b/functions/stdio/rename.c
index 5cb5665..f3ff01e 100644
--- a/functions/stdio/rename.c
+++ b/functions/stdio/rename.c
@@ -1,8 +1,70 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int rename( const char * old, const char * new ) { /* TODO */ };
+/* $Id$ */
+
+/* rename( 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 <stdio.h>
+
+#ifndef REGTEST
+#include <_PDCLIB_glue.h>
+
+int rename( const char * old, const char * new )
+{
+    /* TODO: Search open file list, flush and close file */
+    return _PDCLIB_rename( old, new );
+}
+
+#endif
+
+#ifdef TEST
+/* TODO: Work around the following undef */
+#undef SEEK_SET
+#include <_PDCLIB_test.h>
+
+#include <stdlib.h>
+
+int main( void )
+{
+    /* TODO: Extend to internal testing (buffer etc.) */
+    char filename1[] = "touch testfile1";
+    char filename2[] = "testfile2";
+    /* check that neither file exists */
+    TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+    TESTCASE( fopen( filename2, "r" ) == NULL );
+    /* rename file 1 to file 2 - expected to fail */
+    TESTCASE( rename( filename1 + 6, filename2 ) == -1 );
+    /* create file 1 */
+    system( filename1 );
+    /* check that file 1 exists */
+    TESTCASE( fopen( filename1 + 6, "r" ) != NULL );
+    /* rename file 1 to file 2 */
+    TESTCASE( rename( filename1 + 6, filename2 ) == 0 );
+    /* check that file 2 exists, file 1 does not */
+    TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+    TESTCASE( fopen( filename2, "r" ) != NULL );
+    /* create another file 1 */
+    system( filename1 );
+    /* check that file 1 exists */
+    TESTCASE( fopen( filename1 + 6, "r" ) != NULL );
+    /* rename file 1 to file 2 - expected to fail, see comment in
+       _PDCLIB_rename() itself.
+    */
+#ifndef REGTEST
+    TESTCASE( rename( filename1 + 6, filename2 ) == -1 );
+#else
+    /* glibc rename() overwrites existing destination file. */
+    TESTCASE( rename( filename1 + 6, filename2 ) == 0 );
+#endif
+    /* remove both files */
+    remove( filename1 + 6 );
+    remove( filename2 );
+    /* check that they're gone */
+    TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
+    TESTCASE( fopen( filename2, "r" ) == NULL );
+    return TEST_RESULTS;
+}
+
+#endif