-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int fclose( FILE * stream ) { /* TODO */ };
+/* $Id$ */
+
+/* fclose( 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>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifndef REGTEST
+#include <_PDCLIB_io.h>
+#include <threads.h>
+
+extern FILE * _PDCLIB_filelist;
+
+int fclose( FILE * stream )
+{
+ FILE * current = _PDCLIB_filelist;
+ FILE * previous = NULL;
+ /* Checking that the FILE handle is actually one we had opened before. */
+ while ( current != NULL )
+ {
+ if ( stream == current )
+ {
+ /* Flush buffer */
+ if ( stream->status & _PDCLIB_FWRITE )
+ {
+ if ( _PDCLIB_flushbuffer( stream ) == EOF )
+ {
+ /* Flush failed, errno already set */
+ return EOF;
+ }
+ }
+
+ /* Release mutex*/
+ mtx_destroy( &stream->lock );
+
+ /* Close handle */
+ stream->ops->close(stream->handle);
+
+ /* Remove stream from list */
+ if ( previous != NULL )
+ {
+ previous->next = stream->next;
+ }
+ else
+ {
+ _PDCLIB_filelist = stream->next;
+ }
+ /* Delete tmpfile() */
+ if ( stream->status & _PDCLIB_DELONCLOSE )
+ {
+ remove( stream->filename );
+ }
+ /* Free stream */
+ if ( ! ( stream->status & _PDCLIB_STATIC ) )
+ {
+ free( stream );
+ }
+ return 0;
+ }
+ previous = current;
+ current = current->next;
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+#ifndef REGTEST
+ FILE * file1;
+ FILE * file2;
+ remove( testfile1 );
+ remove( testfile2 );
+ TESTCASE( _PDCLIB_filelist == stdin );
+ TESTCASE( ( file1 = fopen( testfile1, "w" ) ) != NULL );
+ TESTCASE( _PDCLIB_filelist == file1 );
+ TESTCASE( ( file2 = fopen( testfile2, "w" ) ) != NULL );
+ TESTCASE( _PDCLIB_filelist == file2 );
+ TESTCASE( fclose( file2 ) == 0 );
+ TESTCASE( _PDCLIB_filelist == file1 );
+ TESTCASE( ( file2 = fopen( testfile2, "w" ) ) != NULL );
+ TESTCASE( _PDCLIB_filelist == file2 );
+ TESTCASE( fclose( file1 ) == 0 );
+ TESTCASE( _PDCLIB_filelist == file2 );
+ TESTCASE( fclose( file2 ) == 0 );
+ TESTCASE( _PDCLIB_filelist == stdin );
+ TESTCASE( remove( testfile1 ) == 0 );
+ TESTCASE( remove( testfile2 ) == 0 );
+#else
+ puts( " NOTEST fclose() test driver is PDCLib-specific." );
+#endif
+ return TEST_RESULTS;
+}
+
+#endif
+