53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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// Copyright (c) 1997 James Clark
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// See the file COPYING for copying permission.
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#ifndef TranslateCodingSystem_INCLUDED
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#define TranslateCodingSystem_INCLUDED 1
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#include "CodingSystem.h"
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#include "Ptr.h"
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#include "CharMap.h"
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#include "CharsetRegistry.h"
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#include "types.h"
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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class SP_API TranslateCodingSystem : public CodingSystem {
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public:
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struct Desc {
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CharsetRegistry::ISORegistrationNumber number;
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// How much to add to the values in the base set.
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Char add;
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};
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// codingSystem is the underlying BCTF
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// desc describes the meaning of the bit combinations produced by that BCTF
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// charset is the system character set
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// replacementChar is character in systemCharset that should be used to represent
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// characters that do not exist in the systemCharset.
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// illegalChar is a code that can never be produced by the underlying BCTF.
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TranslateCodingSystem(const CodingSystem *codingSystem,
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const Desc *desc,
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const CharsetInfo *charset,
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Char illegalChar,
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Char replacementChar);
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Decoder *makeDecoder() const;
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Encoder *makeEncoder() const;
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unsigned fixedBytesPerChar() const;
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private:
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ConstPtr<CharMapResource<Char> > decodeMap_;
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ConstPtr<CharMapResource<Char> > encodeMap_;
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const CodingSystem *sub_;
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const Desc *desc_;
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const CharsetInfo *charset_;
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Char illegalChar_;
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Char replacementChar_;
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};
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not TranslateCodingSystem_INCLUDED */
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