C++ 的 ini 配置文件读写/注释库 inicpp 用法 [ header-file-only ]

原创

ThatJin

修改于 2024-05-14 21:51:14

8440

一、库介绍

平常的ini配置文件只能读取，但是这个库不光可以读取、写入配置项，还能给配置项写注释。只有一个hpp头文件，不需要编译，支持C++11及之后版本。

MIT license。

二、库使用

- git clone

git clone https://github.com/dujingning/inicpp.git

包含 `inicpp.hpp`,声明类 `inicpp::iniReader`,然后就可以随意使用了.

1.读取INI文件示例

#include "inicpp.hpp"
int main()
{
    // Load and parse the INI file.
    inicpp::iniReader _ini("config.ini");
    std::cout << _ini["rtsp"]["port"] << std::endl;
}

2.写示例

#include "inicpp.hpp"

int main()
{
    // Load and parse the INI file.
    inicpp::iniReader _ini("config.ini");
    _ini.modify("rtsp","port","554");
    std::cout << _ini["rtsp"]["port"] << std::endl;
}

3.添加注释

#include "inicpp.hpp"
int main()
{
    // Load and parse the INI file.
    inicpp::iniReader _ini("config.ini");
    _ini.modify("rtsp","port","554","this is the listen port for rtsp server");
    std::cout << _ini["rtsp"]["port"] << std::endl;
}

* 4.toString()、toInt()、toDouble()

#include "inicpp.hpp"

int main()
{
    // Load and parse the INI file.
    inicpp::iniReader _ini("config.ini");
    _ini.modify("rtsp","port","554","this is the listen port for rtsp server");
    std::cout << _ini["rtsp"]["port"] << std::endl;

    // Convert to string, default is string
    std::string http_port_s = _ini["http"].toString("port");
    std::cout << "to string:\thttp.port = " << http_port_s << std::endl;

    // Convert to double
    double http_port_d = _ini["http"].toDouble("port");
    std::cout << "to double:\thttp.port = " << http_port_d << std::endl;

    // Convert to int
    int http_port_i = _ini["http"].toInt("port");
    std::cout << "to int:\t\thttp.port = " << http_port_i << std::endl;
}

5.完整示例：`example/main.cpp`.

编译demo到example目录下make一下就好了： `example/Makefile` .

没有make命令，只需要执行: `g++ -I../ -std=c++11 main.cpp -o iniExample`

6.linux下使用demo的完整示例：example/main.cpp

- 编译 `example/main.cpp`

[jn@jn inicpp]$ ls
example  inicpp.hpp  LICENSE  README.md
[jn@jn inicpp]$ cd example/
[jn@jn example]$ make
g++ -I../ -std=c++11 main.cpp -o iniExample
[jn@jn example]$ ls
iniExample  main.cpp  Makefile

- 运行 `iniExample`

[jn@jn example]$ ./iniExample
get rtsp port:555
to string:      rtsp.port = 554
to string:      math.PI   = 3.1415926
to string:      math.PI   = 3.1415926
to double:      math.PI   = 3.1415926
to int:         math.PI   = 3
to wstring:     other.desc= 你好，世界
[jn@jn example]$

- 生成 `config.ini`

[jn@jn example]$ cat config.ini
;no section test:add comment later.
noSection=yes
key0=noSectionAndComment
key1=noSectionAndComment
key2=noSectionAndComment
[head]
;thanks for your using inicpp project.
title=inicpp
;Permissive license for open-source software distribution.
license=MIT


[rtsp]
;this is the listen ip for rtsp server.
port=554
ip=127.0.0.1


[math]
;This is pi in mathematics.
PI=3.1415926


[other]
;this test for std::wstring. comment it.
desc=你好，世界
[jn@jn example]$

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c++11