96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
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/*
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* Copyright (C) 2021 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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#include <utils/Log.h>
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#include <string>
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#include <vector>
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#include "MemoryFileSystem.h"
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namespace clearkeydrm {
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std::string MemoryFileSystem::GetFileName(const std::string& path) {
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size_t index = path.find_last_of('/');
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if (index != std::string::npos) {
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return path.substr(index + 1);
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} else {
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return path;
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}
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}
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bool MemoryFileSystem::FileExists(const std::string& fileName) const {
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auto result = mMemoryFileSystem.find(fileName);
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return result != mMemoryFileSystem.end();
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}
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ssize_t MemoryFileSystem::GetFileSize(const std::string& fileName) const {
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auto result = mMemoryFileSystem.find(fileName);
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if (result != mMemoryFileSystem.end()) {
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return static_cast<ssize_t>(result->second.getFileSize());
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} else {
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ALOGE("Failed to get size for %s", fileName.c_str());
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return -1;
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}
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}
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std::vector<std::string> MemoryFileSystem::ListFiles() const {
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std::vector<std::string> list;
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for (const auto& filename : mMemoryFileSystem) {
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list.push_back(filename.first);
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}
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return list;
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}
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size_t MemoryFileSystem::Read(const std::string& path, std::string* buffer) {
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std::string key = GetFileName(path);
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auto result = mMemoryFileSystem.find(key);
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if (result != mMemoryFileSystem.end()) {
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std::string serializedHashFile = result->second.getContent();
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buffer->assign(serializedHashFile);
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return buffer->size();
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} else {
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ALOGE("Failed to read from %s", path.c_str());
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return -1;
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}
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}
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size_t MemoryFileSystem::Write(const std::string& path, const MemoryFile& memoryFile) {
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std::string key = GetFileName(path);
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auto result = mMemoryFileSystem.find(key);
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if (result != mMemoryFileSystem.end()) {
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mMemoryFileSystem.erase(key);
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}
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mMemoryFileSystem.insert(std::pair<std::string, MemoryFile>(key, memoryFile));
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return memoryFile.getFileSize();
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}
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bool MemoryFileSystem::RemoveFile(const std::string& fileName) {
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auto result = mMemoryFileSystem.find(fileName);
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if (result != mMemoryFileSystem.end()) {
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mMemoryFileSystem.erase(result);
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return true;
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} else {
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ALOGE("Cannot find license to remove: %s", fileName.c_str());
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return false;
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}
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}
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bool MemoryFileSystem::RemoveAllFiles() {
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mMemoryFileSystem.clear();
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return mMemoryFileSystem.empty();
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}
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} // namespace clearkeydrm
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