| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| #pragma once |
| |
| #include <mutex> |
| #include <string> |
| #include <vector> |
| |
| #include <glog/logging.h> |
| #include <regex.h> |
| |
| // Wrapper around regex_t to get the regex matches from a string. |
| class KuduRegex { |
| public: |
| // A regex for the given pattern that is expected to have 'num_matches' |
| // matches. |
| KuduRegex(const char* pattern, size_t num_matches) |
| : num_matches_(num_matches) { |
| CHECK_EQ(0, regcomp(&re_, pattern, REG_EXTENDED)); |
| } |
| |
| bool Match(const std::string& in, std::vector<std::string>* matches) { |
| regmatch_t match[num_matches_ + 1]; |
| if (regexec(&re_, in.c_str(), num_matches_ + 1, match, 0) != 0) { |
| return false; |
| } |
| for (size_t i = 1; i < num_matches_ + 1; ++i) { |
| if (match[i].rm_so == -1) { |
| // An empty string for each optional regex component. |
| matches->emplace_back(""); |
| } else { |
| matches->emplace_back(in.substr(match[i].rm_so, |
| match[i].rm_eo - match[i].rm_so)); |
| } |
| } |
| return true; |
| } |
| |
| private: |
| const size_t num_matches_; |
| regex_t re_; |
| }; |