81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "RegEx.h"
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#include <regex>
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#include <android-base/logging.h>
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namespace simpleperf {
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RegExMatch::~RegExMatch() {}
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class RegExMatchImpl : public RegExMatch {
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public:
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RegExMatchImpl(std::string_view s, const std::regex& re)
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: match_it_(s.data(), s.data() + s.size(), re) {}
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bool IsValid() const override { return match_it_ != std::cregex_iterator(); }
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std::string GetField(size_t index) const override { return match_it_->str(index); }
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void MoveToNextMatch() override { ++match_it_; }
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private:
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std::cregex_iterator match_it_;
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};
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class RegExImpl : public RegEx {
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public:
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RegExImpl(std::string_view pattern)
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: RegEx(pattern), re_(pattern_, std::regex::ECMAScript | std::regex::optimize) {}
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bool Match(std::string_view s) const override {
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return std::regex_match(s.begin(), s.end(), re_);
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}
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bool Search(std::string_view s) const override {
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return std::regex_search(s.begin(), s.end(), re_);
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}
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std::unique_ptr<RegExMatch> SearchAll(std::string_view s) const override {
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return std::unique_ptr<RegExMatch>(new RegExMatchImpl(s, re_));
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}
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std::optional<std::string> Replace(const std::string& s,
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const std::string& format) const override {
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try {
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return {std::regex_replace(s, re_, format)};
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} catch (std::regex_error& e) {
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LOG(ERROR) << "regex_error: " << e.what() << ", pattern " << pattern_ << ", format "
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<< format;
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return std::nullopt;
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}
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}
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private:
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std::regex re_;
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};
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std::unique_ptr<RegEx> RegEx::Create(std::string_view pattern) {
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try {
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return std::make_unique<RegExImpl>(pattern);
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} catch (std::regex_error& e) {
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LOG(ERROR) << "regex_error: " << e.what() << ", pattern " << pattern;
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return nullptr;
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}
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}
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} // namespace simpleperf
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