100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_VINTF_UTILS_H
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#define ANDROID_VINTF_UTILS_H
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <android-base/logging.h>
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#include <utils/Errors.h>
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#include "parse_xml.h"
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namespace android {
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namespace vintf {
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namespace details {
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// Return the file from the given location as a string.
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//
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// This class can be used to create a mock for overriding.
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class FileFetcher {
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public:
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virtual ~FileFetcher() {}
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virtual status_t fetch(const std::string& path, std::string& fetched) {
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std::ifstream in;
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in.open(path);
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if (!in.is_open()) {
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LOG(WARNING) << "Cannot open " << path;
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return INVALID_OPERATION;
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}
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std::stringstream ss;
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ss << in.rdbuf();
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fetched = ss.str();
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return OK;
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}
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};
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extern FileFetcher* gFetcher;
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class PartitionMounter {
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public:
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virtual ~PartitionMounter() {}
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virtual status_t mountSystem() const { return OK; }
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virtual status_t mountVendor() const { return OK; }
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virtual status_t umountSystem() const { return OK; }
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virtual status_t umountVendor() const { return OK; }
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};
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extern PartitionMounter* gPartitionMounter;
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template <typename T>
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status_t fetchAllInformation(const std::string& path, const XmlConverter<T>& converter,
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T* outObject) {
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std::string info;
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if (gFetcher == nullptr) {
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// Should never happen.
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return NO_INIT;
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}
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status_t result = gFetcher->fetch(path, info);
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if (result != OK) {
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return result;
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}
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bool success = converter(outObject, info);
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if (!success) {
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LOG(ERROR) << "Illformed file: " << path << ": "
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<< converter.lastError();
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return BAD_VALUE;
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}
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return OK;
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}
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} // namespace details
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} // namespace vintf
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} // namespace android
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#endif
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