Implement a feature to generate a dependency file. By giving protoc the flag

"--dependency_manifest_out=FILE", protoc will write dependencies of
input proto files into FILE. In FILE, the format will be
<full path to FILE>: <full path to 1st proto>\\\n <full path to 2nd proto> ...
This cl is based on https://github.com/google/protobuf/pull/178

2 files changed, 7 insertions, 0 deletions

diff --git a/src/google/protobuf/testing/file.cc b/src/google/protobuf/testing/file.cc
index 5344ec15..3d07b127 100644
--- a/src/google/protobuf/testing/file.cc
+++ b/src/google/protobuf/testing/file.cc
@@ -192,5 +192,9 @@ void File::DeleteRecursively(const string& name,
 #endif
 }
 
+bool File::ChangeWorkingDirectory(const string& new_working_directory) {
+  return chdir(new_working_directory.c_str()) == 0;
+}
+
 }  // namespace protobuf
 }  // namespace google
diff --git a/src/google/protobuf/testing/file.h b/src/google/protobuf/testing/file.h
index d2aeabf2..2f63f80e 100644
--- a/src/google/protobuf/testing/file.h
+++ b/src/google/protobuf/testing/file.h
@@ -77,6 +77,9 @@ class File {
   static void DeleteRecursively(const string& name,
                                 void* dummy1, void* dummy2);
 
+  // Change working directory to given directory.
+  static bool ChangeWorkingDirectory(const string& new_working_directory);
+
   static bool GetContents(
       const string& name, string* output, bool /*is_default*/) {
     return ReadFileToString(name, output);