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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include "action.h"
#include "init_parser.h"
#include "log.h"
#include "parser.h"
#include "service.h"
#include "util.h"
#include <android-base/stringprintf.h>
Parser::Parser() {
}
Parser& Parser::GetInstance() {
static Parser instance;
return instance;
}
void Parser::AddSectionParser(const std::string& name,
std::unique_ptr<SectionParser> parser) {
section_parsers_[name] = std::move(parser);
}
void Parser::ParseData(const std::string& filename, const std::string& data) {
//TODO: Use a parser with const input and remove this copy
std::vector<char> data_copy(data.begin(), data.end());
data_copy.push_back('\0');
parse_state state;
state.filename = filename.c_str();
state.line = 0;
state.ptr = &data_copy[0];
state.nexttoken = 0;
SectionParser* section_parser = nullptr;
std::vector<std::string> args;
for (;;) {
switch (next_token(&state)) {
case T_EOF:
if (section_parser) {
section_parser->EndSection();
}
return;
case T_NEWLINE:
state.line++;
if (args.empty()) {
break;
}
if (section_parsers_.count(args[0])) {
if (section_parser) {
section_parser->EndSection();
}
section_parser = section_parsers_[args[0]].get();
std::string ret_err;
if (!section_parser->ParseSection(args, &ret_err)) {
parse_error(&state, "%s\n", ret_err.c_str());
section_parser = nullptr;
}
} else if (section_parser) {
std::string ret_err;
if (!section_parser->ParseLineSection(args, state.filename,
state.line, &ret_err)) {
parse_error(&state, "%s\n", ret_err.c_str());
}
}
args.clear();
break;
case T_TEXT:
args.emplace_back(state.text);
break;
}
}
}
bool Parser::ParseConfigFile(const std::string& path) {
INFO("Parsing file %s...\n", path.c_str());
Timer t;
std::string data;
if (!read_file(path.c_str(), &data)) {
return false;
}
data.push_back('\n'); // TODO: fix parse_config.
ParseData(path, data);
for (const auto& sp : section_parsers_) {
sp.second->EndFile(path);
}
// Turning this on and letting the INFO logging be discarded adds 0.2s to
// Nexus 9 boot time, so it's disabled by default.
if (false) DumpState();
NOTICE("(Parsing %s took %.2fs.)\n", path.c_str(), t.duration());
return true;
}
bool Parser::ParseConfigDir(const std::string& path) {
INFO("Parsing directory %s...\n", path.c_str());
std::unique_ptr<DIR, int(*)(DIR*)> config_dir(opendir(path.c_str()), closedir);
if (!config_dir) {
ERROR("Could not import directory '%s'\n", path.c_str());
return false;
}
dirent* current_file;
while ((current_file = readdir(config_dir.get()))) {
std::string current_path =
android::base::StringPrintf("%s/%s", path.c_str(), current_file->d_name);
// Ignore directories and only process regular files.
if (current_file->d_type == DT_REG) {
if (!ParseConfigFile(current_path)) {
ERROR("could not import file '%s'\n", current_path.c_str());
}
}
}
return true;
}
bool Parser::ParseConfig(const std::string& path) {
if (is_dir(path.c_str())) {
return ParseConfigDir(path);
}
return ParseConfigFile(path);
}
void Parser::DumpState() const {
ServiceManager::GetInstance().DumpState();
ActionManager::GetInstance().DumpState();
}
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