nfig

A header-only C++ config library with a focus on ease of spontaneous use over performance. There is no direct access to variables, but instead each variable is accessed like:

int width = nfig.get<int>("I_WIDTH")

Trying to code spontaneously when I need to create new config values in different locations in code (globals extern, globals local, parsing config, config file itself) is awful. I rarely make a local copy of a config variable, unless I'm going over a high-performance section of code.

Config values are created in a JSON-formatted file, for example:

{
	"B_MUTE_MUSIC": false,
	"I_WIDTH": 100,
	"I_HEIGHT": 100,
	"F_WEIGHT": 10.3,
	"S_TITLE": "This is a sweet title"
}

where the prefix before the underline must correspond to each type. This allows for creating custom config value types in extensions to nfig, such as colour. You'll need to include a parsing function to create a Value of this type.

{
	"CLR_BACKGROUND": [255, 128, 0]
}

Test code is included.

Dependencies

For handling parameters of unknown type:

riffer

For parsing JSON-format config files:

picojson