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 #ifndef NINJA_CLPARSER_H_ 16 #define NINJA_CLPARSER_H_ 17 18 #include <set> 19 #include <string> 20 21 /// Visual Studio's cl.exe requires some massaging to work with Ninja; 22 /// for example, it emits include information on stderr in a funny 23 /// format when building with /showIncludes. This class parses this 24 /// output. 25 struct CLParser { 26 /// Parse a line of cl.exe output and extract /showIncludes info. 27 /// If a dependency is extracted, returns a nonempty string. 28 /// Exposed for testing. 29 static std::string FilterShowIncludes(const std::string& line, 30 const std::string& deps_prefix); 31 32 /// Return true if a mentioned include file is a system path. 33 /// Filtering these out reduces dependency information considerably. 34 static bool IsSystemInclude(std::string path); 35 36 /// Parse a line of cl.exe output and return true if it looks like 37 /// it's printing an input filename. This is a heuristic but it appears 38 /// to be the best we can do. 39 /// Exposed for testing. 40 static bool FilterInputFilename(std::string line); 41 42 /// Parse the full output of cl, filling filtered_output with the text that 43 /// should be printed (if any). Returns true on success, or false with err 44 /// filled. output must not be the same object as filtered_object. 45 bool Parse(const std::string& output, const std::string& deps_prefix, 46 std::string* filtered_output, std::string* err); 47 48 std::set<std::string> includes_; 49 }; 50 51 #endif // NINJA_CLPARSER_H_ 52