97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/*
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**********************************************************************
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* Copyright (c) 2002, 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 "funcrepl.h"
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#include "unicode/translit.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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/**
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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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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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return (UnicodeReplacer*) this;
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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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// 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);
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rule.append(replacer->toReplacer()->toReplacerPattern(str, escapeUnprintable));
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rule.append(CLOSE);
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return rule;
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}
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U_NAMESPACE_END
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//eof
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