zlib_util.h

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/*
 * $Id: zlib_util.h,v 1.8 2005/07/04 07:40:19 cbiere Exp $
 *
 * Copyright (c) 2002-2003, Raphael Manfredi
 *
 *----------------------------------------------------------------------
 * This file is part of gtk-gnutella.
 *
 *  gtk-gnutella is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  gtk-gnutella is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with gtk-gnutella; if not, write to the Free Software
 *  Foundation, Inc.:
 *      59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *----------------------------------------------------------------------
 */

#ifndef _zlib_util_h_
#define _zlib_util_h_

#include <glib.h>

typedef struct  {
    gconstpointer in;   
    gint inlen;         
    gpointer out;       
    gint outlen;        
    gint inlen_total;   
    gpointer opaque;    
    gboolean allocated; 
} zlib_deflater_t;

#define zlib_deflater_out(z)    ((z)->out)
#define zlib_deflater_outlen(z) ((z)->outlen)
#define zlib_deflater_inlen(z)  ((z)->inlen_total)

/*
 * Public interface.
 */

gchar *zlib_strerror(gint errnum);

zlib_deflater_t *zlib_deflater_make(gconstpointer data, gint len, gint level);
zlib_deflater_t *zlib_deflater_make_into(
    gconstpointer data, gint len, gpointer dest, gint destlen, gint level);
gint zlib_deflate(zlib_deflater_t *zd, gint amount);
gboolean zlib_deflate_data(zlib_deflater_t *zd, gconstpointer data, gint len);
gboolean zlib_deflate_close(zlib_deflater_t *zd);
void zlib_deflater_free(zlib_deflater_t *zd, gboolean output);

gpointer zlib_uncompress(gconstpointer data, gint len, gulong uncompressed_len);
gboolean zlib_is_valid_header(gconstpointer data, gint len);

#endif  /* _zlib_util_h_ */

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