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/* $Id: tif_flush.c,v 1.9 2010-03-31 06:40:10 fwarmerdam 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 )
return 1;
if (!TIFFFlushData(tif))
return (0);
/* In update (r+) mode we try to detect the case where
only the strip/tile map has been altered, and we try to
rewrite only that portion of the directory without
making any other changes */
if( (tif->tif_flags & TIFF_DIRTYSTRIP)
&& !(tif->tif_flags & TIFF_DIRTYDIRECT)
&& tif->tif_mode == O_RDWR )
{
uint64 *offsets=NULL, *sizes=NULL;
if( TIFFIsTiled(tif) )
{
if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets )
&& TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes )
&& _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8,
tif->tif_dir.td_nstrips, offsets )
&& _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8,
tif->tif_dir.td_nstrips, sizes ) )
{
tif->tif_flags &= ~TIFF_DIRTYSTRIP;
tif->tif_flags &= ~TIFF_BEENWRITING;
return 1;
}
}
else
{
if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets )
&& TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes )
&& _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8,
tif->tif_dir.td_nstrips, offsets )
&& _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8,
tif->tif_dir.td_nstrips, sizes ) )
{
tif->tif_flags &= ~TIFF_DIRTYSTRIP;
tif->tif_flags &= ~TIFF_BEENWRITING;
return 1;
}
}
}
if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP))
&& !TIFFRewriteDirectory(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 (1);
if (tif->tif_flags & TIFF_POSTENCODE) {
tif->tif_flags &= ~TIFF_POSTENCODE;
if (!(*tif->tif_postencode)(tif))
return (0);
}
return (TIFFFlushData1(tif));
}
/* vim: set ts=8 sts=8 sw=8 noet: */
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
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