GYP generator for GN

tools/gn/gyp_target_writer.cc

Index: tools/gn/gyp_target_writer.cc
diff --git a/tools/gn/gyp_target_writer.cc b/tools/gn/gyp_target_writer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eec2b890ccfcdf83829033c0b4245ef34caa9e7b
--- /dev/null
+++ b/tools/gn/gyp_target_writer.cc
@@ -0,0 +1,69 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "tools/gn/gyp_target_writer.h"
+
+#include <iostream>
+
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "tools/gn/build_settings.h"
+#include "tools/gn/filesystem_utils.h"
+#include "tools/gn/gyp_binary_target_writer.h"
+#include "tools/gn/scheduler.h"
+#include "tools/gn/settings.h"
+#include "tools/gn/target.h"
+
+GypTargetWriter::GypTargetWriter(const Target* target, std::ostream& out)
+    : settings_(target->settings()),
+      target_(target),
+      out_(out) {
+}
+
+GypTargetWriter::~GypTargetWriter() {
+}
+
+// static
+void GypTargetWriter::WriteFile(const SourceFile& gyp_file,
+                                const std::vector<TargetPair>& targets,
+                                Err* err) {
+  if (targets.empty())
+    return;
+  const BuildSettings* debug_build_settings =
+      targets[0].debug->settings()->build_settings();
+
+  std::stringstream file;
+  file << "# Generated by GN. Do not edit.\n\n";
+  file << "{\n";
+  file << "  'skip_includes': 1,\n";
+  file << "  'targets': [\n";
+
+  for (size_t i = 0; i < targets.size(); i++) {
+    switch (targets[i].debug->output_type()) {
+      case Target::COPY_FILES:
+      case Target::CUSTOM:
+      case Target::GROUP:
+        break;  // TODO(brettw)
+      case Target::EXECUTABLE:
+      case Target::STATIC_LIBRARY:
+      case Target::SHARED_LIBRARY:
+      case Target::SOURCE_SET: {
+        GypBinaryTargetWriter writer(targets[i].debug, targets[i].release,
+                                     file);
+        writer.Run();
+        break;
+      }
+      default:
+        CHECK(0);
+    }
+  }
+
+  file << "  ],\n}\n";
+
+  base::FilePath gyp_file_path = debug_build_settings->GetFullPath(gyp_file);
+  std::string contents = file.str();
+  file_util::WriteFile(gyp_file_path, contents.c_str(),
+                       static_cast<int>(contents.size()));
+}
+