tif_close.c

奇趣公司比较新的qt/emd版本

/* $Id: tif_close.c,v 1.9 2005/11/23 22:20:56 dron 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"

/************************************************************************/
/*                            TIFFCleanup()                             */
/************************************************************************/

/**
 * Auxiliary function to free the TIFF structure. Given structure will be
 * completetly freed, so you should save opened file handle and pointer
 * to the close procedure in external variables before calling
 * _TIFFCleanup(), if you will need these ones to close the file.
 * 
 * @param tif A TIFF pointer.
 */

void
TIFFCleanup(TIFF* tif)
{
	if (tif->tif_mode != O_RDONLY)
	    /*
	     * Flush buffered data and directory (if dirty).
	     */
	    TIFFFlush(tif);
	(*tif->tif_cleanup)(tif);
	TIFFFreeDirectory(tif);

	if (tif->tif_dirlist)
	    _TIFFfree(tif->tif_dirlist);
	    
	/* Clean up client info links */
	while( tif->tif_clientinfo )
	{
	    TIFFClientInfoLink *link = tif->tif_clientinfo;

	    tif->tif_clientinfo = link->next;
	    _TIFFfree( link->name );
	    _TIFFfree( link );
	}

	if (tif->tif_rawdata && (tif->tif_flags&TIFF_MYBUFFER))
	    _TIFFfree(tif->tif_rawdata);
	if (isMapped(tif))
	    TIFFUnmapFileContents(tif, tif->tif_base, tif->tif_size);

	/* Clean up custom fields */
	if (tif->tif_nfields > 0) 
	{
	    size_t  i;

	    for (i = 0; i < tif->tif_nfields; i++) 
	    {
		TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
		if (fld->field_bit == FIELD_CUSTOM && 
		    strncmp("Tag ", fld->field_name, 4) == 0) 
		{
		    _TIFFfree(fld->field_name);
		    _TIFFfree(fld);
		}
	    }   
	  
	    _TIFFfree(tif->tif_fieldinfo);
	}

	_TIFFfree(tif);
}

/************************************************************************/
/*                            TIFFClose()                               */
/************************************************************************/

/**
 * Close a previously opened TIFF file.
 *
 * TIFFClose closes a file that was previously opened with TIFFOpen().
 * Any buffered data are flushed to the file, including the contents of
 * the current directory (if modified); and all resources are reclaimed.
 * 
 * @param tif A TIFF pointer.
 */

void
TIFFClose(TIFF* tif)
{
	TIFFCloseProc closeproc = tif->tif_closeproc;
	thandle_t fd = tif->tif_clientdata;

	TIFFCleanup(tif);
	(void) (*closeproc)(fd);
}