1 files changed, 52 insertions, 0 deletions
diff --git a/src/clparser.h b/src/clparser.h
new file mode 100644
index 0000000..e597e7e
--- /dev/null
+++ b/src/clparser.h
@@ -0,0 +1,52 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// Licensed 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.
+
+#ifndef NINJA_CLPARSER_H_
+#define NINJA_CLPARSER_H_
+
+#include <set>
+#include <string>
+using namespace std;
+
+/// Visual Studio's cl.exe requires some massaging to work with Ninja;
+/// for example, it emits include information on stderr in a funny
+/// format when building with /showIncludes.  This class parses this
+/// output.
+struct CLParser {
+  /// Parse a line of cl.exe output and extract /showIncludes info.
+  /// If a dependency is extracted, returns a nonempty string.
+  /// Exposed for testing.
+  static string FilterShowIncludes(const string& line,
+                                   const string& deps_prefix);
+
+  /// Return true if a mentioned include file is a system path.
+  /// Filtering these out reduces dependency information considerably.
+  static bool IsSystemInclude(string path);
+
+  /// Parse a line of cl.exe output and return true if it looks like
+  /// it's printing an input filename.  This is a heuristic but it appears
+  /// to be the best we can do.
+  /// Exposed for testing.
+  static bool FilterInputFilename(string line);
+
+  /// Parse the full output of cl, filling filtered_output with the text that
+  /// should be printed (if any). Returns true on success, or false with err
+  /// filled. output must not be the same object as filtered_object.
+  bool Parse(const string& output, const string& deps_prefix,
+             string* filtered_output, string* err);
+
+  set<string> includes_;
+};
+
+#endif  // NINJA_CLPARSER_H_