// Copyright 2010-2011, Google Inc.
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <sys/stat.h>
#include <sys/types.h>
#include <string>
#include <vector>
#include "base/util.h"
#include "base/singleton.h"
#include "converter/segments.h"
#include "rewriter/calculator_rewriter.h"
#include "rewriter/collocation_rewriter.h"
#include "rewriter/date_rewriter.h"
#include "rewriter/emoticon_rewriter.h"
#include "rewriter/english_variants_rewriter.h"
#include "rewriter/fortune_rewriter.h"
#include "rewriter/number_rewriter.h"
#include "rewriter/rewriter_interface.h"
#include "rewriter/single_kanji_rewriter.h"
#include "rewriter/symbol_rewriter.h"
#include "rewriter/transliteration_rewriter.h"
#include "rewriter/user_segment_history_rewriter.h"
#include "rewriter/user_boundary_history_rewriter.h"
#include "rewriter/variants_rewriter.h"
#include "rewriter/version_rewriter.h"
DEFINE_bool(use_history_rewriter, true, "Use history rewriter or not.");
namespace mozc {
namespace {
class RewriterImpl: public RewriterInterface {
public:
RewriterImpl();
virtual ~RewriterImpl();
// Rewrite request and/or result.
// Can call converter if need be
virtual bool Rewrite(Segments *segments) const;
// Hook(s) for all mutable operations
virtual void Finish(Segments *segments);
virtual bool Sync();
virtual bool Reload();
virtual void Clear();
private:
EnglishVariantsRewriter *english_variants_rewriter_;
SingleKanjiRewriter *single_kanji_rewriter_;
SymbolRewriter *symbol_rewriter_;
NumberRewriter *number_rewriter_;
CollocationRewriter *collocation_rewriter_;
DateRewriter *date_rewriter_;
VariantsRewriter *variants_rewriter_;
UserBoundaryHistoryRewriter *user_boundary_history_rewriter_;
UserSegmentHistoryRewriter *user_segment_history_rewriter_;
VersionRewriter *version_rewriter_;
EmoticonRewriter *emoticon_rewriter_;
CalculatorRewriter *calculator_rewriter_;
FortuneRewriter *fortune_rewriter_;
TransliterationRewriter *t13n_rewriter_;
vector<RewriterInterface *> rewriters_;
};
RewriterImpl::RewriterImpl()
: english_variants_rewriter_(new EnglishVariantsRewriter),
single_kanji_rewriter_(new SingleKanjiRewriter),
symbol_rewriter_(new SymbolRewriter),
number_rewriter_(new NumberRewriter),
collocation_rewriter_(new CollocationRewriter),
date_rewriter_(new DateRewriter),
variants_rewriter_(new VariantsRewriter),
// These two rewriters are initialized later following the
// use_history_rewriter flag. because it will access to the
// local files at the initialization timing. See comments below
// for more details.
user_boundary_history_rewriter_(NULL),
user_segment_history_rewriter_(NULL),
version_rewriter_(new VersionRewriter),
emoticon_rewriter_(new EmoticonRewriter),
calculator_rewriter_(new CalculatorRewriter),
fortune_rewriter_(new FortuneRewriter),
t13n_rewriter_(new TransliterationRewriter) {
rewriters_.push_back(t13n_rewriter_);
rewriters_.push_back(english_variants_rewriter_);
rewriters_.push_back(number_rewriter_);
rewriters_.push_back(collocation_rewriter_);
rewriters_.push_back(single_kanji_rewriter_);
rewriters_.push_back(symbol_rewriter_);
rewriters_.push_back(calculator_rewriter_);
rewriters_.push_back(emoticon_rewriter_);
rewriters_.push_back(date_rewriter_);
rewriters_.push_back(variants_rewriter_);
if (FLAGS_use_history_rewriter) {
user_boundary_history_rewriter_ = new UserBoundaryHistoryRewriter;
user_segment_history_rewriter_ = new UserSegmentHistoryRewriter;
rewriters_.push_back(user_boundary_history_rewriter_);
rewriters_.push_back(user_segment_history_rewriter_);
}
rewriters_.push_back(fortune_rewriter_);
rewriters_.push_back(version_rewriter_);
}
RewriterImpl::~RewriterImpl() {
delete english_variants_rewriter_;
delete single_kanji_rewriter_;
delete symbol_rewriter_;
delete number_rewriter_;
delete collocation_rewriter_;
delete date_rewriter_;
delete variants_rewriter_;
delete user_boundary_history_rewriter_;
delete user_segment_history_rewriter_;
delete version_rewriter_;
delete emoticon_rewriter_;
delete fortune_rewriter_;
delete calculator_rewriter_;
delete t13n_rewriter_;
rewriters_.clear();
}
void RewriterImpl::Finish(Segments *segments) {
for (size_t i = 0; i < rewriters_.size(); ++i) {
rewriters_[i]->Finish(segments);
}
}
bool RewriterImpl::Rewrite(Segments *segments) const {
bool result = false;
for (size_t i = 0; i < rewriters_.size(); ++i) {
result |= rewriters_[i]->Rewrite(segments);
}
return result;
}
bool RewriterImpl::Sync() {
bool result = false;
for (size_t i = 0; i < rewriters_.size(); ++i) {
result |= rewriters_[i]->Sync();
}
return result;
}
bool RewriterImpl::Reload() {
bool result = false;
for (size_t i = 0; i < rewriters_.size(); ++i) {
result |= rewriters_[i]->Reload();
}
return result;
}
void RewriterImpl::Clear() {
for (size_t i = 0; i < rewriters_.size(); ++i) {
rewriters_[i]->Clear();
}
}
RewriterInterface *g_rewriter = NULL;
} // namespace
RewriterInterface *RewriterFactory::GetRewriter() {
if (g_rewriter == NULL) {
return Singleton<RewriterImpl>::get();
} else {
return g_rewriter;
}
}
void RewriterFactory::SetRewriter(RewriterInterface *rewriter) {
g_rewriter = rewriter;
}
} // namespace mozc