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86 lines
2.6 KiB
86 lines
2.6 KiB
/*
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* Copyright 2020 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 "storage/legacy_config_file.h"
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#include <cerrno>
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#include <fstream>
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#include <sstream>
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#include "common/strings.h"
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#include "os/files.h"
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#include "os/log.h"
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#include "storage/device.h"
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namespace bluetooth {
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namespace storage {
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LegacyConfigFile::LegacyConfigFile(std::string path) : path_(std::move(path)) {
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ASSERT(!path_.empty());
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};
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std::optional<ConfigCache> LegacyConfigFile::Read(size_t temp_devices_capacity) {
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ASSERT(!path_.empty());
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std::ifstream config_file(path_);
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if (!config_file || !config_file.is_open()) {
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LOG_ERROR("unable to open file '%s', error: %s", path_.c_str(), strerror(errno));
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return std::nullopt;
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}
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int line_num = 0;
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ConfigCache cache(temp_devices_capacity, Device::kLinkKeyProperties);
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std::string line;
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std::string section(ConfigCache::kDefaultSectionName);
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while (std::getline(config_file, line)) {
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++line_num;
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line = common::StringTrim(std::move(line));
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if (line.front() == '\0' || line.front() == '#') {
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continue;
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}
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if (line.front() == '[') {
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if (line.back() != ']') {
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LOG_WARN("unterminated section name on line %d", line_num);
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return std::nullopt;
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}
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// Read 'test' from '[text]', hence -2
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section = line.substr(1, line.size() - 2);
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} else {
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auto tokens = common::StringSplit(line, "=", 2);
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if (tokens.size() != 2) {
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LOG_WARN("no key/value separator found on line %d", line_num);
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return std::nullopt;
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}
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tokens[0] = common::StringTrim(std::move(tokens[0]));
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tokens[1] = common::StringTrim(std::move(tokens[1]));
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cache.SetProperty(section, tokens[0], std::move(tokens[1]));
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}
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}
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return cache;
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}
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bool LegacyConfigFile::Write(const ConfigCache& cache) {
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return os::WriteToFile(path_, cache.SerializeToLegacyFormat());
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}
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bool LegacyConfigFile::Delete() {
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if (!os::FileExists(path_)) {
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LOG_WARN("Config file at \"%s\" does not exist", path_.c_str());
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return false;
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}
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return os::RemoveFile(path_);
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}
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} // namespace storage
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} // namespace bluetooth
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