Android: Refactor native test setup in a util class.

testing/android/native_test_util.cc

Index: testing/android/native_test_util.cc
diff --git a/testing/android/native_test_util.cc b/testing/android/native_test_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..08f901b64183542c0a582b32ff290623f2096184
--- /dev/null
+++ b/testing/android/native_test_util.cc
@@ -0,0 +1,90 @@
+// 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 "testing/android/native_test_util.h"
+
+#include <android/log.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "base/command_line.h"
+#include "base/file_path.h"
+#include "base/file_util.h"
+#include "base/string_util.h"
+#include "base/strings/string_tokenizer.h"
+
+namespace {
+
+const char kLogTag[] = "chromium";
+
+void AndroidLogError(const char* format, ...) {
+  va_list args;
+  va_start(args, format);
+  __android_log_vprint(ANDROID_LOG_ERROR, kLogTag, format, args);
+  va_end(args);
+}
+
+void ParseArgsFromString(const std::string& command_line,
+                         std::vector<std::string>* args) {
+  base::StringTokenizer tokenizer(command_line, kWhitespaceASCII);
+  tokenizer.set_quote_chars("\"");
+  while (tokenizer.GetNext()) {
+    std::string token;
+    RemoveChars(tokenizer.token(), "\"", &token);
+    args->push_back(token);
+  }
+}
+
+}  // namespace
+
+namespace testing {
+namespace native_test_util {
+
+void CreateFIFO(const char* fifo_path) {
+  unlink(fifo_path);
+  // Default permissions for mkfifo is ignored, chmod is required.
+  if (mkfifo(fifo_path, 0666) || chmod(fifo_path, 0666)) {
+    AndroidLogError("Failed to create fifo %s: %s\n",
+                    fifo_path, strerror(errno));
+    exit(EXIT_FAILURE);
+  }
+}
+
+void RedirectStream(
+    FILE* stream, const char* path, const char* mode) {
+  if (!freopen(path, mode, stream)) {
+    AndroidLogError("Failed to redirect stream to file: %s: %s\n",
+                    path, strerror(errno));
+    exit(EXIT_FAILURE);
+  }
+}
+
+void ParseArgsFromCommandLineFile(
+    const char* path, std::vector<std::string>* args) {
+  base::FilePath command_line(path);
+  std::string command_line_string;
+  if (file_util::ReadFileToString(command_line, &command_line_string)) {
+    ParseArgsFromString(command_line_string, args);
+  }
+}
+
+int ArgsToArgv(const std::vector<std::string>& args,
+                std::vector<char*>* argv) {
+  // We need to pass in a non-const char**.
+  int argc = args.size();
+
+  argv->resize(argc + 1);
+  for (int i = 0; i < argc; ++i) {
+    (*argv)[i] = const_cast<char*>(args[i].c_str());
+  }
+  (*argv)[argc] = NULL;  // argv must be NULL terminated.
+
+  return argc;
+}
+
+}  // namespace native_test_util
+}  // namespace testing