X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fclearerr.c;h=2bfe7c508448eb92830605de1f78031825ef16d2;hb=38c392a0b8812ee3d1a60b7bda4540a306484e7c;hp=28a042d8bd12affa09be2ea7d11737a5931f8ec2;hpb=1d9d92ba957a0b8307c9a65c35867fde68e6533b;p=pdclib

diff --git a/functions/stdio/clearerr.c b/functions/stdio/clearerr.c
index 28a042d..2bfe7c5 100644
--- a/functions/stdio/clearerr.c
+++ b/functions/stdio/clearerr.c
@@ -1,18 +1,58 @@
-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
-
-#ifndef __FILE_H
-#define __FILE_H __FILE_H
-#include <__FILE.h>
-#endif // __FILE_H
-
-void clearerr( FILE * fh )
+/* $Id$ */
+
+/* clearerr( FILE * )
+
+   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
+
+void clearerr( struct _PDCLIB_file_t * stream )
 {
-    fh->ErrorIndicator = 0;
-    fh->EOFIndicator = 0;
-    return;
+    stream->status &= ~( _PDCLIB_ERRORFLAG | _PDCLIB_EOFFLAG );
 }
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+#ifndef REGTEST
+    FILE file = { 0, { 0, 0 }, NULL, 0, 0, 0, _IONBF, NULL, NULL };
+    FILE * fh = &file;
+    TESTCASE( ! ferror( fh ) );
+    TESTCASE( ! feof( fh ) );
+    fh->status |= _PDCLIB_ERRORFLAG;
+    TESTCASE( ferror( fh ) );
+    TESTCASE( ! feof( fh ) );
+    clearerr( fh );
+    TESTCASE( ! ferror( fh ) );
+    TESTCASE( ! feof( fh ) );
+    fh->status |= _PDCLIB_EOFFLAG;
+    TESTCASE( ! ferror( fh ) );
+    TESTCASE( feof( fh ) );
+    clearerr( fh );
+    TESTCASE( ! ferror( fh ) );
+    TESTCASE( ! feof( fh ) );
+    fh->status |= _PDCLIB_EOFFLAG | _PDCLIB_ERRORFLAG;
+    TESTCASE( ferror( fh ) );
+    TESTCASE( feof( fh ) );
+    clearerr( fh );
+    TESTCASE( ! ferror( fh ) );
+    TESTCASE( ! feof( fh ) );
+#else
+    /* TODO: The above is ad-hoc and PDCLib specific. A better test driver
+       should be internals-agnostic (provoking the error / eof flag by
+       "regular" operations).
+    */
+    TESTCASE( NO_TESTDRIVER );
+#endif
+    return TEST_RESULTS;
+}
+
+#endif