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/*
**********************************************************************
* Copyright (c) 2002-2003, International Business Machines Corporation
* and others. All Rights Reserved.
**********************************************************************
* Date Name Description
* 02/04/2002 aliu Creation.
**********************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_TRANSLITERATION
#include "unicode/translit.h"
#include "unicode/uniset.h"
#include "funcrepl.h"
static const UChar AMPERSAND = 38; // '&'
static const UChar OPEN[] = {40,32,0}; // "( "
static const UChar CLOSE[] = {32,41,0}; // " )"
U_NAMESPACE_BEGIN
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(FunctionReplacer)
/**
* Construct a replacer that takes the output of the given
* replacer, passes it through the given transliterator, and emits
* the result as output.
*/
FunctionReplacer::FunctionReplacer(Transliterator* adoptedTranslit,
UnicodeFunctor* adoptedReplacer) {
translit = adoptedTranslit;
replacer = adoptedReplacer;
}
/**
* Copy constructor.
*/
FunctionReplacer::FunctionReplacer(const FunctionReplacer& other) :
UnicodeFunctor(other),
UnicodeReplacer(other)
{
translit = other.translit->clone();
replacer = other.replacer->clone();
}
/**
* Destructor
*/
FunctionReplacer::~FunctionReplacer() {
delete translit;
delete replacer;
}
/**
* Implement UnicodeFunctor
*/
UnicodeFunctor* FunctionReplacer::clone() const {
return new FunctionReplacer(*this);
}
/**
* UnicodeFunctor API. Cast 'this' to a UnicodeReplacer* pointer
* and return the pointer.
*/
UnicodeReplacer* FunctionReplacer::toReplacer() const {
return (UnicodeReplacer*) this;
}
/**
* UnicodeReplacer API
*/
int32_t FunctionReplacer::replace(Replaceable& text,
int32_t start,
int32_t limit,
int32_t& cursor) {
// First delegate to subordinate replacer
int32_t len = replacer->toReplacer()->replace(text, start, limit, cursor);
limit = start + len;
// Now transliterate
limit = translit->transliterate(text, start, limit);
return limit - start;
}
/**
* UnicodeReplacer API
*/
UnicodeString& FunctionReplacer::toReplacerPattern(UnicodeString& rule,
UBool escapeUnprintable) const {
UnicodeString str;
rule.truncate(0);
rule.append(AMPERSAND);
rule.append(translit->getID());
rule.append(OPEN);
rule.append(replacer->toReplacer()->toReplacerPattern(str, escapeUnprintable));
rule.append(CLOSE);
return rule;
}
/**
* Implement UnicodeReplacer
*/
void FunctionReplacer::addReplacementSetTo(UnicodeSet& toUnionTo) const {
UnicodeSet set;
toUnionTo.addAll(translit->getTargetSet(set));
}
/**
* UnicodeFunctor API
*/
void FunctionReplacer::setData(const TransliterationRuleData* d) {
replacer->setData(d);
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_TRANSLITERATION */
//eof
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