149 lines
4.4 KiB
C++
149 lines
4.4 KiB
C++
/*
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* Copyright (C) 2010 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 <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include "action.h"
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#include "init_parser.h"
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#include "log.h"
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#include "parser.h"
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#include "service.h"
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#include "util.h"
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#include <base/stringprintf.h>
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Parser::Parser() {
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}
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Parser& Parser::GetInstance() {
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static Parser instance;
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return instance;
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}
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void Parser::AddSectionParser(const std::string& name,
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std::unique_ptr<SectionParser> parser) {
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section_parsers_[name] = std::move(parser);
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}
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void Parser::ParseData(const std::string& filename, const std::string& data) {
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//TODO: Use a parser with const input and remove this copy
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std::vector<char> data_copy(data.begin(), data.end());
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data_copy.push_back('\0');
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parse_state state;
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state.filename = filename.c_str();
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state.line = 0;
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state.ptr = &data_copy[0];
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state.nexttoken = 0;
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SectionParser* section_parser = nullptr;
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std::vector<std::string> args;
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for (;;) {
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switch (next_token(&state)) {
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case T_EOF:
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if (section_parser) {
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section_parser->EndSection();
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}
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return;
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case T_NEWLINE:
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state.line++;
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if (args.empty()) {
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break;
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}
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if (section_parsers_.count(args[0])) {
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if (section_parser) {
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section_parser->EndSection();
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}
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section_parser = section_parsers_[args[0]].get();
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std::string ret_err;
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if (!section_parser->ParseSection(args, &ret_err)) {
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parse_error(&state, "%s\n", ret_err.c_str());
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section_parser = nullptr;
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}
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} else if (section_parser) {
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std::string ret_err;
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if (!section_parser->ParseLineSection(args, state.filename,
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state.line, &ret_err)) {
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parse_error(&state, "%s\n", ret_err.c_str());
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}
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}
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args.clear();
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break;
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case T_TEXT:
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args.emplace_back(state.text);
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break;
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}
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}
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}
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bool Parser::ParseConfigFile(const std::string& path) {
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INFO("Parsing file %s...\n", path.c_str());
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Timer t;
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std::string data;
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if (!read_file(path.c_str(), &data)) {
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return false;
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}
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data.push_back('\n'); // TODO: fix parse_config.
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ParseData(path, data);
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for (const auto& sp : section_parsers_) {
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sp.second->EndFile(path);
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}
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// Turning this on and letting the INFO logging be discarded adds 0.2s to
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// Nexus 9 boot time, so it's disabled by default.
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if (false) DumpState();
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NOTICE("(Parsing %s took %.2fs.)\n", path.c_str(), t.duration());
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return true;
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}
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bool Parser::ParseConfigDir(const std::string& path) {
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INFO("Parsing directory %s...\n", path.c_str());
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std::unique_ptr<DIR, int(*)(DIR*)> config_dir(opendir(path.c_str()), closedir);
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if (!config_dir) {
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ERROR("Could not import directory '%s'\n", path.c_str());
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return false;
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}
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dirent* current_file;
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while ((current_file = readdir(config_dir.get()))) {
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std::string current_path =
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android::base::StringPrintf("%s/%s", path.c_str(), current_file->d_name);
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// Ignore directories and only process regular files.
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if (current_file->d_type == DT_REG) {
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if (!ParseConfigFile(current_path)) {
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ERROR("could not import file '%s'\n", current_path.c_str());
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}
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}
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}
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return true;
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}
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bool Parser::ParseConfig(const std::string& path) {
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if (is_dir(path.c_str())) {
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return ParseConfigDir(path);
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}
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return ParseConfigFile(path);
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}
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void Parser::DumpState() const {
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ServiceManager::GetInstance().DumpState();
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ActionManager::GetInstance().DumpState();
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}
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