1 // Copyright 2015 The Shaderc Authors. 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 "libshaderc_util/version_profile.h" 16 17 #include <cctype> 18 #include <sstream> 19 20 namespace { 21 22 const int kVersionNumberLength = 3; 23 const int kMaxProfileLength = 13; // strlen(compatibility) 24 const int kMaxVersionProfileLength = kVersionNumberLength + kMaxProfileLength; 25 const int kMinVersionProfileLength = kVersionNumberLength; 26 27 } // anonymous namespace 28 29 namespace shaderc_util { 30 ParseVersionProfile(const std::string & version_profile,int * version,EProfile * profile)31bool ParseVersionProfile(const std::string& version_profile, int* version, 32 EProfile* profile) { 33 if (version_profile.size() < kMinVersionProfileLength || 34 version_profile.size() > kMaxVersionProfileLength || 35 !::isdigit(version_profile.front())) 36 return false; 37 38 std::string profile_string; 39 std::istringstream(version_profile) >> *version >> profile_string; 40 41 if (!IsKnownVersion(*version)) { 42 return false; 43 } 44 if (profile_string.empty()) { 45 *profile = ENoProfile; 46 } else if (profile_string == "core") { 47 *profile = ECoreProfile; 48 } else if (profile_string == "es") { 49 *profile = EEsProfile; 50 } else if (profile_string == "compatibility") { 51 *profile = ECompatibilityProfile; 52 } else { 53 return false; 54 } 55 56 return true; 57 } 58 59 } // namespace shaderc_util 60