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64 lines
2.1 KiB
64 lines
2.1 KiB
3 years ago
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//
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// HtSGMLCodec.h
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//
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// HtSGMLCodec: A Specialized HtWordCodec class to convert between SGML
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// ISO 8859-1 entities and high-bit characters.
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//
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// Part of the ht://Dig package <http://www.htdig.org/>
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// Copyright (c) 1995-2004 The ht://Dig Group
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// For copyright details, see the file COPYING in your distribution
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// or the GNU Library General Public License (LGPL) version 2 or later
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// <http://www.gnu.org/copyleft/lgpl.html>
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//
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// $Id: HtSGMLCodec.h,v 1.4 2004/05/28 13:15:12 lha Exp $
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//
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#ifndef __HtSGMLCodec_h
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#define __HtSGMLCodec_h
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#include "HtWordCodec.h"
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// Container for a HtWordCodec (not subclassed from it due to
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// portability-problems using initializers).
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// Not for subclassing.
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class HtSGMLCodec
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{
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public:
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static HtSGMLCodec *instance();
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virtual ~HtSGMLCodec();
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// Similar to the HtWordCodec class. Each string may contain
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// zero or more of words from the lists. Here we need to run
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// it through two codecs because we might have two different forms
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inline String encode(const String &uncoded) const
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{ return myTextWordCodec->encode(myNumWordCodec->encode(uncoded)); }
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// But we only want to decode into one form i.e. &foo; NOT &#nnn;
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String decode(const String &coded) const
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{ return myTextWordCodec->decode(coded); }
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// If an error was discovered during the parsing of
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// entities, this returns an error message
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String& ErrMsg();
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// egcs-1.1 (and some earlier versions) always erroneously
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// warns (even without warning flags) about classic singleton
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// constructs ("only defines private constructors and has no
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// friends"). Rather than adding autoconf tests to shut these
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// versions up with -Wno-ctor-dtor-privacy, we fake normal
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// conformism for it here (the minimal effort).
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friend void my_friend_Harvey__a_faked_friend_function();
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private:
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// Hide default-constructor, copy-constructor and assignment
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// operator, making this a singleton.
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HtSGMLCodec();
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HtSGMLCodec(const HtSGMLCodec &);
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void operator= (const HtSGMLCodec &);
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HtWordCodec *myTextWordCodec; // For &foo;
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HtWordCodec *myNumWordCodec; // For &#foo;
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String myErrMsg;
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};
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#endif /* __HtSGMLCodec_h */
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