github.com/maruel/nin@v0.0.0-20220112143044-f35891e3ce7e/src/clparser.h (about)

     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_