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// Copyright 2014 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Wrapper around /etc/os-release and /etc/os-release.d.
// Standard fields can come from both places depending on how we set them. They
// should always be accessed through this interface.
#include <string>
#include <vector>
#include <brillo/brillo_export.h>
#include <brillo/key_value_store.h>
#include <gtest/gtest_prod.h>
namespace brillo {
class BRILLO_EXPORT OsReleaseReader final {
// Create an empty reader
OsReleaseReader() = default;
// Loads the key=value pairs from either /etc/os-release.d/<KEY> or
// /etc/os-release.
void Load();
// Same as the private Load method.
// This need to be public so that services can use it in testing mode (for
// autotest tests for example).
// This should not be used in production so suffix it with TestingOnly to
// make it obvious.
void LoadTestingOnly(const base::FilePath& root_dir);
// Getter for the given key. Returns whether the key was found on the store.
bool GetString(const std::string& key, std::string* value) const;
// Getter for all the keys in /etc/os-release.
std::vector<std::string> GetKeys() const;
// The map storing all the key-value pairs.
KeyValueStore store_;
// os-release can be lazily loaded if need be.
bool initialized_;
// Load the data from a given root_dir.
BRILLO_PRIVATE void Load(const base::FilePath& root_dir);
} // namespace brillo