Add a native mate converter for command lines

atom/common/native_mate_converters/command_line_converter.h

@@ -0,0 +1,37 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_COMMON_NATIVE_MATE_CONVERTERS_COMMAND_LINE_CONVERTER_H_
+#define ATOM_COMMON_NATIVE_MATE_CONVERTERS_COMMAND_LINE_CONVERTER_H_
+
+#include <string>
+
+#include "atom/common/native_mate_converters/string16_converter.h"
+#include "base/command_line.h"
+
+namespace mate {
+
+template<>
+struct Converter<base::CommandLine> {
+  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
+                                    const base::CommandLine& val) {
+    return Converter<base::CommandLine::StringType>::ToV8(isolate, val.GetCommandLineString());
+  }
+  static bool FromV8(v8::Isolate* isolate,
+                     v8::Local<v8::Value> val,
+                     base::CommandLine* out) {
+    base::FilePath::StringType path;
+    
+    if (Converter<base::FilePath::StringType>::FromV8(isolate, val, &path)) {
+      *out = base::CommandLine(base::FilePath(path));
+      return true;
+    } else {
+      return false;
+    }
+  }
+};
+
+}  // namespace mate
+
+#endif  // ATOM_COMMON_NATIVE_MATE_CONVERTERS_FILE_PATH_CONVERTER_H_