1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/funcrepl.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,128 @@
1.4 +/*
1.5 +**********************************************************************
1.6 +* Copyright (c) 2002-2012, International Business Machines Corporation
1.7 +* and others. All Rights Reserved.
1.8 +**********************************************************************
1.9 +* Date Name Description
1.10 +* 02/04/2002 aliu Creation.
1.11 +**********************************************************************
1.12 +*/
1.13 +
1.14 +#include "unicode/utypes.h"
1.15 +
1.16 +#if !UCONFIG_NO_TRANSLITERATION
1.17 +
1.18 +#include "unicode/translit.h"
1.19 +#include "unicode/uniset.h"
1.20 +#include "funcrepl.h"
1.21 +
1.22 +static const UChar AMPERSAND = 38; // '&'
1.23 +static const UChar OPEN[] = {40,32,0}; // "( "
1.24 +static const UChar CLOSE[] = {32,41,0}; // " )"
1.25 +
1.26 +U_NAMESPACE_BEGIN
1.27 +
1.28 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(FunctionReplacer)
1.29 +
1.30 +/**
1.31 + * Construct a replacer that takes the output of the given
1.32 + * replacer, passes it through the given transliterator, and emits
1.33 + * the result as output.
1.34 + */
1.35 +FunctionReplacer::FunctionReplacer(Transliterator* adoptedTranslit,
1.36 + UnicodeFunctor* adoptedReplacer) {
1.37 + translit = adoptedTranslit;
1.38 + replacer = adoptedReplacer;
1.39 +}
1.40 +
1.41 +/**
1.42 + * Copy constructor.
1.43 + */
1.44 +FunctionReplacer::FunctionReplacer(const FunctionReplacer& other) :
1.45 + UnicodeFunctor(other),
1.46 + UnicodeReplacer(other)
1.47 +{
1.48 + translit = other.translit->clone();
1.49 + replacer = other.replacer->clone();
1.50 +}
1.51 +
1.52 +/**
1.53 + * Destructor
1.54 + */
1.55 +FunctionReplacer::~FunctionReplacer() {
1.56 + delete translit;
1.57 + delete replacer;
1.58 +}
1.59 +
1.60 +/**
1.61 + * Implement UnicodeFunctor
1.62 + */
1.63 +UnicodeFunctor* FunctionReplacer::clone() const {
1.64 + return new FunctionReplacer(*this);
1.65 +}
1.66 +
1.67 +/**
1.68 + * UnicodeFunctor API. Cast 'this' to a UnicodeReplacer* pointer
1.69 + * and return the pointer.
1.70 + */
1.71 +UnicodeReplacer* FunctionReplacer::toReplacer() const {
1.72 + FunctionReplacer *nonconst_this = const_cast<FunctionReplacer *>(this);
1.73 + UnicodeReplacer *nonconst_base = static_cast<UnicodeReplacer *>(nonconst_this);
1.74 +
1.75 + return nonconst_base;
1.76 +}
1.77 +
1.78 +/**
1.79 + * UnicodeReplacer API
1.80 + */
1.81 +int32_t FunctionReplacer::replace(Replaceable& text,
1.82 + int32_t start,
1.83 + int32_t limit,
1.84 + int32_t& cursor)
1.85 +{
1.86 +
1.87 + // First delegate to subordinate replacer
1.88 + int32_t len = replacer->toReplacer()->replace(text, start, limit, cursor);
1.89 + limit = start + len;
1.90 +
1.91 + // Now transliterate
1.92 + limit = translit->transliterate(text, start, limit);
1.93 +
1.94 + return limit - start;
1.95 +}
1.96 +
1.97 +/**
1.98 + * UnicodeReplacer API
1.99 + */
1.100 +UnicodeString& FunctionReplacer::toReplacerPattern(UnicodeString& rule,
1.101 + UBool escapeUnprintable) const {
1.102 + UnicodeString str;
1.103 + rule.truncate(0);
1.104 + rule.append(AMPERSAND);
1.105 + rule.append(translit->getID());
1.106 + rule.append(OPEN, 2);
1.107 + rule.append(replacer->toReplacer()->toReplacerPattern(str, escapeUnprintable));
1.108 + rule.append(CLOSE, 2);
1.109 + return rule;
1.110 +}
1.111 +
1.112 +/**
1.113 + * Implement UnicodeReplacer
1.114 + */
1.115 +void FunctionReplacer::addReplacementSetTo(UnicodeSet& toUnionTo) const {
1.116 + UnicodeSet set;
1.117 + toUnionTo.addAll(translit->getTargetSet(set));
1.118 +}
1.119 +
1.120 +/**
1.121 + * UnicodeFunctor API
1.122 + */
1.123 +void FunctionReplacer::setData(const TransliterationRuleData* d) {
1.124 + replacer->setData(d);
1.125 +}
1.126 +
1.127 +U_NAMESPACE_END
1.128 +
1.129 +#endif /* #if !UCONFIG_NO_TRANSLITERATION */
1.130 +
1.131 +//eof
