131 lines
3.3 KiB
C++
131 lines
3.3 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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**********************************************************************
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* Copyright (c) 2002-2012, International Business Machines Corporation
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* and others. All Rights Reserved.
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**********************************************************************
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* Date Name Description
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* 02/04/2002 aliu Creation.
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**********************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_TRANSLITERATION
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#include "unicode/translit.h"
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#include "unicode/uniset.h"
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#include "funcrepl.h"
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static const UChar AMPERSAND = 38; // '&'
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static const UChar OPEN[] = {40,32,0}; // "( "
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static const UChar CLOSE[] = {32,41,0}; // " )"
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(FunctionReplacer)
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/**
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* Construct a replacer that takes the output of the given
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* replacer, passes it through the given transliterator, and emits
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* the result as output.
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*/
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FunctionReplacer::FunctionReplacer(Transliterator* adoptedTranslit,
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UnicodeFunctor* adoptedReplacer) {
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translit = adoptedTranslit;
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replacer = adoptedReplacer;
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}
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/**
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* Copy constructor.
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*/
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FunctionReplacer::FunctionReplacer(const FunctionReplacer& other) :
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UnicodeFunctor(other),
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UnicodeReplacer(other)
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{
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translit = other.translit->clone();
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replacer = other.replacer->clone();
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}
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/**
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* Destructor
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*/
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FunctionReplacer::~FunctionReplacer() {
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delete translit;
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delete replacer;
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}
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/**
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* Implement UnicodeFunctor
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*/
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UnicodeFunctor* FunctionReplacer::clone() const {
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return new FunctionReplacer(*this);
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}
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/**
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* UnicodeFunctor API. Cast 'this' to a UnicodeReplacer* pointer
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* and return the pointer.
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*/
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UnicodeReplacer* FunctionReplacer::toReplacer() const {
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FunctionReplacer *nonconst_this = const_cast<FunctionReplacer *>(this);
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UnicodeReplacer *nonconst_base = static_cast<UnicodeReplacer *>(nonconst_this);
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return nonconst_base;
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}
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/**
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* UnicodeReplacer API
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*/
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int32_t FunctionReplacer::replace(Replaceable& text,
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int32_t start,
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int32_t limit,
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int32_t& cursor)
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{
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// First delegate to subordinate replacer
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int32_t len = replacer->toReplacer()->replace(text, start, limit, cursor);
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limit = start + len;
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// Now transliterate
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limit = translit->transliterate(text, start, limit);
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return limit - start;
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}
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/**
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* UnicodeReplacer API
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*/
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UnicodeString& FunctionReplacer::toReplacerPattern(UnicodeString& rule,
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UBool escapeUnprintable) const {
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UnicodeString str;
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rule.truncate(0);
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rule.append(AMPERSAND);
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rule.append(translit->getID());
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rule.append(OPEN, 2);
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rule.append(replacer->toReplacer()->toReplacerPattern(str, escapeUnprintable));
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rule.append(CLOSE, 2);
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return rule;
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}
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/**
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* Implement UnicodeReplacer
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*/
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void FunctionReplacer::addReplacementSetTo(UnicodeSet& toUnionTo) const {
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UnicodeSet set;
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toUnionTo.addAll(translit->getTargetSet(set));
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}
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/**
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* UnicodeFunctor API
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*/
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void FunctionReplacer::setData(const TransliterationRuleData* d) {
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replacer->setData(d);
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}
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_TRANSLITERATION */
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//eof
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