https://github.com/nixman/config-ctor

C++ preprocessor type constuctor for processing structured (JSON) configuration files
https://github.com/nixman/config-ctor

configuration cplusplus cplusplus-11

Last synced: 16 days ago
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C++ preprocessor type constuctor for processing structured (JSON) configuration files

• Host: GitHub
• URL: https://github.com/nixman/config-ctor
• Owner: niXman
• License: mit
• Created: 2014-10-27T08:14:32.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2020-09-18T22:00:15.000Z (over 4 years ago)
• Last Synced: 2024-11-19T13:15:08.433Z (3 months ago)
• Topics: configuration, cplusplus, cplusplus-11
• Language: C++
• Homepage:
• Size: 95.7 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
[![Build Status](https://travis-ci.org/niXman/config-ctor.svg?branch=master)](https://travis-ci.org/niXman/config-ctor)

config-ctor

===========

C++ preprocessor type constuctor for processing structured (JSON) configuration files.

Tutorial

===========

Describe the info about options you need:

```cpp

CONSTRUCT_CONFIG(

    myconfig, // the name of the generated type(struct)

    (int, a) // the sequence of the variables

    (double, b)

)

```

For read the options from file:

```cpp

myconfig cfg = myconfig::read("myconfig.cfg");

```

For write the options to file:

```cpp

myconfig cfg;

cfg.a = 33;

cfg.b = 44.55;

myconfig::write("myconfig.cfg", cfg);

```

Nested config-ctor types

===========

As members now you can use nested config-ctor types:

```cpp

CONSTRUCT_CONFIG(

    option,

    (int, i)

    (std::string, s)

)

CONSTRUCT_CONFIG(

    myconfig, // the name of the generated type(struct)

    (int, a) // the sequence of the variables

    (double, b)

    (option, o) // <<<<<<<<<<<<<<<<<<<<<<

)

```

Default values

===========

You can specify the default values for options. To do this, specify the third parameter for that variable:

```cpp

CONSTRUCT_CONFIG(

    myconfig, // the name of the generated type(struct)

    (int, a, 33) // the sequence of the variables

    (double, b, 44.55)

)

```

Placeholders

===========

Also you can use placeholders in your config files.

For example, this(`stat_log={HOME}/procs/{PID}/stat.log`) line in config file will be readed as `stat_log=/home/nixman/procs/18151/stat.log`

The following placeholders are supported:

 - `{USER}            // user name`

 - `{HOME}            // user home path`

 - `{CWD}             // current path`

 - `{TEMP}            // user temp path`

 - `{PID}             // process ID`

 - `{PATH}            // PATH env`

 - `{PROC}            // executable path`

 - `{GETENV(ENV_VAR)} // gets the system env var value. also you can use it with default value: {GETENV(ENV_VAR, defaul_value)}`