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