96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/*
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**********************************************************************
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* Copyright (c) 2000, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* Date Name Description
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* 01/17/2000 aliu Ported from Java.
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**********************************************************************
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*/
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#ifndef JAMOHANG_H
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#define JAMOHANG_H
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#include "unicode/translit.h"
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/**
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* A transliterator that converts Jamo to Hangul.
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*
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* @author Mark Davis
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* @version $RCSfile: jamohang.h,v $ $Revision: 1.1 $ $Date: 2000/01/18 01:55:52 $
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*/
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class U_I18N_API JamoHangulTransliterator : public Transliterator {
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/**
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* ID for this transliterator.
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*/
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static const char* _ID;
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public:
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/**
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* Constructs a transliterator.
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*/
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JamoHangulTransliterator(UnicodeFilter* adoptedFilter = 0);
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/**
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* Destructor.
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*/
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virtual ~JamoHangulTransliterator();
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/**
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* Copy constructor.
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*/
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JamoHangulTransliterator(const JamoHangulTransliterator&);
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/**
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* Assignment operator.
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*/
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JamoHangulTransliterator& operator=(const JamoHangulTransliterator&);
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/**
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* Transliterator API.
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*/
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Transliterator* clone(void) const;
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/**
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* Transliterates a segment of a string. <code>Transliterator</code> API.
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* @param text the string to be transliterated
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* @param start the beginning index, inclusive; <code>0 <= start
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* <= limit</code>.
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* @param limit the ending index, exclusive; <code>start <= limit
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* <= text.length()</code>.
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* @return the new limit index
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*/
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virtual int32_t transliterate(Replaceable &text,
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int32_t start, int32_t limit) const;
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/**
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* Implements {@link Transliterator#handleKeyboardTransliterate}.
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*/
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virtual void handleKeyboardTransliterate(Replaceable& text,
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int32_t offsets[3]) const;
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/**
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* Return the length of the longest context required by this transliterator.
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* This is <em>preceding</em> context.
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* @param direction either <code>FORWARD</code> or <code>REVERSE</code>
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* @return maximum number of preceding context characters this
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* transliterator needs to examine
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*/
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virtual int32_t getMaximumContextLength(void) const;
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private:
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/**
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* Return composed character (if it composes)
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* 0 otherwise
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*/
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static UChar composeHangul(UChar last, UChar ch);
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UChar filteredCharAt(Replaceable& text, int32_t i) const;
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};
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inline JamoHangulTransliterator::~JamoHangulTransliterator() {}
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#endif
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