ini.h

/* Copyright (c) 2021 OceanBase and/or its affiliates. All rights reserved.
miniob is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:
         http://license.coscl.org.cn/MulanPSL2
THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details. */
 
//
// Created by Longda on 2010
//
 
#if !defined(__COMMON_CONF_INI_H__)
#define __COMMON_CONF_INI_H__
 
#include <stdio.h>
 
#include <iostream>
 
#include "common/lang/map.h"
#include "common/lang/set.h"
#include "common/lang/string.h"
 
namespace common {
 
//********************************************************************
// #means comments
// Ini configuration format
//[section]
// VARNAME=VALUE
 
class Ini
{
public:
  Ini();
  ~Ini();
 
  int load(const string &ini_file);
 
  const map<string, string> &get(const string &section = DEFAULT_SECTION);
 
  string get(const string &key, const string &default_value, const string &section = DEFAULT_SECTION);
 
  int put(const string &key, const string &value, const string &section = DEFAULT_SECTION);
 
  void to_string(string &output_str);
 
  static const string DEFAULT_SECTION;
 
  // one line max length
  static const int MAX_CFG_LINE_LEN = 1024;
 
  // value split tag
  static const char CFG_DELIMIT_TAG = ',';
 
  // comments's tag
  static const char CFG_COMMENT_TAG = '#';
 
  // continue line tag
  static const char CFG_CONTINUE_TAG = '\\';
 
  // session name tag
  static const char CFG_SESSION_START_TAG = '[';
  static const char CFG_SESSION_END_TAG   = ']';
 
protected:
  void insert_session(const string &session_name);
 
  map<string, string> *switch_session(const string &session_name);
 
  int insert_entry(map<string, string> *session_map, const string &line);
 
  typedef map<string, map<string, string>> SessionsMap;
 
private:
  static const map<string, string> empty_map_;
 
  set<string> file_names_;
  SessionsMap sections_;
};
 
Ini *&get_properties();
//********************************************************************
 
}  // namespace common
#endif  //__COMMON_CONF_INI_H__