1 // Copyright 2015 Google Inc. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "check.h" 16 #include "re.h" 17 18 namespace benchmark { 19 20 Regex::Regex() : init_(false) { } 21 22 bool Regex::Init(const std::string& spec, std::string* error) { 23 int ec = regcomp(&re_, spec.c_str(), REG_EXTENDED | REG_NOSUB); 24 if (ec != 0) { 25 if (error) { 26 size_t needed = regerror(ec, &re_, nullptr, 0); 27 char* errbuf = new char[needed]; 28 regerror(ec, &re_, errbuf, needed); 29 30 // regerror returns the number of bytes necessary to null terminate 31 // the string, so we move that when assigning to error. 32 CHECK_NE(needed, 0); 33 error->assign(errbuf, needed - 1); 34 35 delete[] errbuf; 36 } 37 38 return false; 39 } 40 41 init_ = true; 42 return true; 43 } 44 45 Regex::~Regex() { 46 if (init_) { 47 regfree(&re_); 48 } 49 } 50 51 bool Regex::Match(const std::string& str) { 52 if (!init_) { 53 return false; 54 } 55 56 return regexec(&re_, str.c_str(), 0, nullptr, 0) == 0; 57 } 58 59 } // end namespace benchmark 60
