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tif_close.c

/* $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);
}


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