-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
+/* $Id$ */
-FILE * freopen( const char * restrict filename, const char * restrict mode, FILE * stream ) { /* TODO */ };
+/* freopen( const char *, const char *, FILE * )
-/* PDPC code - unreviewed
+ 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>
+#include <stdlib.h>
+
+/* Close any file currently associated with the given stream. Open the file
+ identified by the given filename with the given mode (equivalent to fopen()),
+ and associate it with the given stream. If filename is a NULL pointer,
+ attempt to change the mode of the given stream.
+ This implementation allows any mode changes.
+ (Primary use of this function is to redirect stdin, stdout, and stderr.)
+*/
+struct _PDCLIB_file_t * freopen( const char * _PDCLIB_restrict filename, const char * _PDCLIB_restrict mode, struct _PDCLIB_file_t * _PDCLIB_restrict stream )
{
- fclose(stream);
- return (fopen(filename, mode));
+ unsigned int status = stream->status & ( _IONBF | _IOLBF | _IOFBF | _PDCLIB_FREEBUFFER | _PDCLIB_DELONCLOSE );
+ /* TODO: This function can change wide orientation of a stream */
+ if ( stream->status & _PDCLIB_FWRITE )
+ {
+ _PDCLIB_flushbuffer( stream );
+ }
+ _PDCLIB_close( stream->handle );
+ clearerr( stream );
+ /* FIXME: Copy filename into the FILE structure. */
+ /* FIXME: filename cannot reside in "big block" memory */
+ if ( filename == NULL )
+ {
+ filename = stream->filename;
+ }
+ if ( ( mode == NULL ) || ( filename[0] == '\0' ) )
+ {
+ return NULL;
+ }
+ if ( ( stream->status = _PDCLIB_filemode( mode ) ) == 0 )
+ {
+ return NULL;
+ }
+ /* Re-add the flags we saved above */
+ stream->status |= status;
+ stream->bufidx = 0;
+ stream->bufend = 0;
+ stream->ungetidx = 0;
+ /* TODO: Setting mbstate */
+ if ( ( stream->handle = _PDCLIB_open( filename, stream->status ) ) == _PDCLIB_NOHANDLE )
+ {
+ return NULL;
+ }
+ return stream;
}
-*/
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ TESTCASE( NO_TESTDRIVER );
+ return TEST_RESULTS;
+}
+
+#endif