35c5bcc89c
Add the ability to override the current section being parsed and instead parse a line by itself if a given line starts with a specific prefix. Test: Boot bullhead Change-Id: Idbbf2682b78996b41d05f3db655c8937a8c6ccda
96 lines
4.1 KiB
C++
96 lines
4.1 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _INIT_INIT_PARSER_H_
|
|
#define _INIT_INIT_PARSER_H_
|
|
|
|
#include <map>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
// SectionParser is an interface that can parse a given 'section' in init.
|
|
//
|
|
// You can implement up to 4 functions below, with ParseSection() being mandatory.
|
|
// The first two function return bool with false indicating a failure and has a std::string* err
|
|
// parameter into which an error string can be written. It will be reported along with the
|
|
// filename and line number of where the error occurred.
|
|
//
|
|
// 1) bool ParseSection(std::vector<std::string>&& args, const std::string& filename,
|
|
// int line, std::string* err)
|
|
// This function is called when a section is first encountered.
|
|
//
|
|
// 2) bool ParseLineSection(std::vector<std::string>&& args, int line, std::string* err)
|
|
// This function is called on each subsequent line until the next section is encountered.
|
|
//
|
|
// 3) bool EndSection()
|
|
// This function is called either when a new section is found or at the end of the file.
|
|
// It indicates that parsing of the current section is complete and any relevant objects should
|
|
// be committed.
|
|
//
|
|
// 4) bool EndFile()
|
|
// This function is called at the end of the file.
|
|
// It indicates that the parsing has completed and any relevant objects should be committed.
|
|
|
|
class SectionParser {
|
|
public:
|
|
virtual ~SectionParser() {}
|
|
virtual bool ParseSection(std::vector<std::string>&& args, const std::string& filename,
|
|
int line, std::string* err) = 0;
|
|
virtual bool ParseLineSection(std::vector<std::string>&&, int, std::string*) { return true; };
|
|
virtual void EndSection(){};
|
|
virtual void EndFile(){};
|
|
};
|
|
|
|
class Parser {
|
|
public:
|
|
// LineCallback is the type for callbacks that can parse a line starting with a given prefix.
|
|
//
|
|
// They take the form of bool Callback(std::vector<std::string>&& args, std::string* err)
|
|
//
|
|
// Similar to ParseSection() and ParseLineSection(), this function returns bool with false
|
|
// indicating a failure and has an std::string* err parameter into which an error string can
|
|
// be written.
|
|
using LineCallback = std::function<bool(std::vector<std::string>&&, std::string*)>;
|
|
|
|
static Parser& GetInstance();
|
|
|
|
// Exposed for testing
|
|
Parser();
|
|
|
|
bool ParseConfig(const std::string& path);
|
|
void AddSectionParser(const std::string& name, std::unique_ptr<SectionParser> parser);
|
|
void AddSingleLineParser(const std::string& prefix, LineCallback callback);
|
|
void set_is_system_etc_init_loaded(bool loaded) { is_system_etc_init_loaded_ = loaded; }
|
|
void set_is_vendor_etc_init_loaded(bool loaded) { is_vendor_etc_init_loaded_ = loaded; }
|
|
void set_is_odm_etc_init_loaded(bool loaded) { is_odm_etc_init_loaded_ = loaded; }
|
|
bool is_system_etc_init_loaded() { return is_system_etc_init_loaded_; }
|
|
bool is_vendor_etc_init_loaded() { return is_vendor_etc_init_loaded_; }
|
|
bool is_odm_etc_init_loaded() { return is_odm_etc_init_loaded_; }
|
|
|
|
private:
|
|
void ParseData(const std::string& filename, const std::string& data);
|
|
bool ParseConfigFile(const std::string& path);
|
|
bool ParseConfigDir(const std::string& path);
|
|
|
|
std::map<std::string, std::unique_ptr<SectionParser>> section_parsers_;
|
|
std::vector<std::pair<std::string, LineCallback>> line_callbacks_;
|
|
bool is_system_etc_init_loaded_ = false;
|
|
bool is_vendor_etc_init_loaded_ = false;
|
|
bool is_odm_etc_init_loaded_ = false;
|
|
};
|
|
|
|
#endif
|