/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_flush.c,v 1.3.2.1 2010-06-08 18:50:42 bfriesen Exp $ */

/*

 * Copyright (c) 1988-1997 Sam Leffler

 * Copyright (c) 1991-1997 Silicon Graphics, Inc.

 *

 * Permission to use, copy, modify, distribute, and sell this software and 

 * its documentation for any purpose is hereby granted without fee, provided

 * that (i) the above copyright notices and this permission notice appear in

 * all copies of the software and related documentation, and (ii) the names of

 * Sam Leffler and Silicon Graphics may not be used in any advertising or

 * publicity relating to the software without the specific, prior written

 * permission of Sam Leffler and Silicon Graphics.

 * 

 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 

 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 

 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

 * 

 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR

 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,

 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 

 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 

 * OF THIS SOFTWARE.

 */

/*

 * TIFF Library.

 */

#include "tiffiop.h"

int

TIFFFlush(TIFF* tif)

{

	if (tif->tif_mode != O_RDONLY) {

		if (!TIFFFlushData(tif))

			return (0);

		if ((tif->tif_flags & TIFF_DIRTYDIRECT) &&

		    !TIFFWriteDirectory(tif))

			return (0);

	}

	return (1);

}

/*

 * Flush buffered data to the file.

 *

 * Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING

 * is not set, so that TIFFFlush() will proceed to write out the directory.

 * The documentation says returning 1 is an error indicator, but not having

 * been writing isn't exactly a an error.  Hopefully this doesn't cause

 * problems for other people. 

 */

int

TIFFFlushData(TIFF* tif)

{

	if ((tif->tif_flags & TIFF_BEENWRITING) == 0)

		return (0);

	if (tif->tif_flags & TIFF_POSTENCODE) {

		tif->tif_flags &= ~TIFF_POSTENCODE;

		if (!(*tif->tif_postencode)(tif))

			return (0);

	}

	return (TIFFFlushData1(tif));

}

/*

 * Local Variables:

 * mode: c

 * c-basic-offset: 8

 * fill-column: 78

 * End:

 */