mojo: Utility class to parse .data file.

mojo/android/javatests/validation_test_util.cc

+// Copyright 2014 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 "mojo/android/javatests/validation_test_util.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/test/test_support_android.h"
+#include "jni/ValidationTestUtil_jni.h"
+#include "mojo/public/cpp/bindings/tests/validation_test_input_parser.h"
+
+namespace mojo {
+namespace android {
+
+bool RegisterValidationTestUtil(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+jobject ParseData(JNIEnv* env, jclass jcaller, jstring data_as_string) {
+  std::string input =
+      base::android::ConvertJavaStringToUTF8(env, data_as_string);
+  std::vector<uint8_t> data;
+  size_t num_handles;
+  std::string error_message;
+  if (!mojo::test::ParseValidationTestInput(

[darin (slow to review), 2014/08/27 15:55:56]

nit: "mojo::" prefix isn't necessary since you are in the mojo namespace
already.

[qsr, 2014/08/27 16:02:24]

Done.

+          input, &data, &num_handles, &error_message)) {
+    ScopedJavaLocalRef<jstring> j_error_message =
+        base::android::ConvertUTF8ToJavaString(env, error_message);
+    return Java_ValidationTestUtil_buildData(
+               env, NULL, 0, j_error_message.obj()).Release();
+  }
+
+  jobject byte_buffer =
+      env->NewDirectByteBuffer(&data[0], data.size());
+  return Java_ValidationTestUtil_buildData(env, byte_buffer, num_handles, NULL)
+      .Release();
+}
+
+}  // namespace android
+}  // namespace mojo