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//
// HtURLCodec.h
//
// HtURLCodec: Specialized HtWordCodec which just caters to the
// needs of "url_part_aliases" and "common_url_parts".
// Used for coding URLs when they are on disk; the key and the
// href field in db.docdb.
//
// 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: HtURLCodec.h,v 1.4 2004/05/28 13:15:12 lha Exp $
//
#ifndef __HtURLCodec_h
#define __HtURLCodec_h
#include "HtWordCodec.h"
// Container for a HtWordCodec (not subclassed from it due to
// portability-problems using initializers).
// Not for subclassing.
class HtURLCodec
{
public:
static HtURLCodec *instance();
virtual ~HtURLCodec();
// Same as in the HtWordCodec class. Each string may contain
// zero or more of words from the lists.
inline String encode(const String &uncoded) const
{ return myWordCodec->encode(uncoded); }
String decode(const String &coded) const
{ return myWordCodec->decode(coded); }
// If an error was discovered during the parsing of
// url_part_aliases or common_url_parts, this member gives a
// nonempty String with an error message.
String& ErrMsg();
// 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.
HtURLCodec();
HtURLCodec(const HtURLCodec &);
void operator= (const HtURLCodec &);
HtWordCodec *myWordCodec;
String myErrMsg;
};
#endif /* __HtURLCodec_h */