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//
// HtZlibCodec.h
//
// HtZlibCodec: Provide a generic access to the zlib compression routines.
// If zlib is not present, encode and decode are simply
// assignment functions.
//
// Part of the ht://Dig package <http://www.htdig.org/>
// Copyright (c) 1995-2004 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU Library General Public License (LGPL) version 2 or later
// <http://www.gnu.org/copyleft/lgpl.html>
//
// $Id: HtZlibCodec.h,v 1.4 2004/05/28 13:15:12 lha Exp $
//
//
#ifndef __HtZlibCodec_h
#define __HtZlibCodec_h
#include "htString.h"
#include "HtCodec.h"
class HtZlibCodec : public HtCodec
{
public:
static HtZlibCodec *instance();
~HtZlibCodec();
// Code what's in this string.
String encode(const String &) const;
// Decode what's in this string.
String decode(const String &) const;
// egcs-1.1 (and some earlier versions) always erroneously
// warns (even without warning flags) about classic singleton
// constructs ("only defines private constructors and has no
// friends"). Rather than adding autoconf tests to shut these
// versions up with -Wno-ctor-dtor-privacy, we fake normal
// conformism for it here (the minimal effort).
friend void my_friend_Harvey__a_faked_friend_function();
private:
// Hide default-constructor, copy-constructor and assignment
// operator, making this a singleton.
HtZlibCodec();
HtZlibCodec(const HtZlibCodec &);
void operator= (const HtZlibCodec &);
};
#endif /* __HtZlibCodec_h */
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