\Dana\ShellConf

\Dana\ShellConf is a PHP project which provides methods for parsing and manipulating shell-style (specifically bash-style) variable assignments, which can be useful for simple configuration needs. (But see Rationale below.)

Usage

Install via Composer:

composer require dana/shellconf

Given a config.sh like this:

# comment here
MYVAR1=foo # another comment here
MYVAR2='foo bar'
MYVAR3="foo \"bar\" baz"

And a config.php like this:

<?php

require_once __DIR__ . '/vendor/autoload.php';

$conf = new \Dana\ShellConf\ShellConf();
$conf->load('config.sh');

echo json_encode($conf->toArray(), \JSON_PRETTY_PRINT), "\n";

php config.php produces:

{
    "MYVAR1": "foo",
    "MYVAR2": "foo bar",
    "MYVAR3": "foo \"bar\" baz"
}

Useful methods:

• load($file) — Load config file $file
• parse($string) — Parse config string $string
• reset() — Reset any loaded variables between parse() calls
• set($name, $value) — Create and set variable $name to $value
• unset($name) — Unset variable $name
• get($name, $default) — Get the value of variable $name
• toArray() — Get all loaded variables and their values as an array
• toString() — Get all loaded variables and their values as a bash-compatible config string (to write to a file for example)

Rationale

This project is extremely similar to a number of others designed to read 'dotenv' files, but i had some specific goals in mind that didn't necessarily align with theirs:

• Most of them are focussed on loading files into environment variables, which isn't what i needed. I just want to parse the file, and maybe write it back.

• Some of them don't seem to handle escaping and unescaping in exactly the same way as bash.

• Many of them are overly clever for my purposes, supporting things like bash-incompatible extensions, variable interpolation, even command substition, which i don't want.

• I was interested in some finer-grained methods related to escaping as well as writing bash-compatible lines back out.

For all of those reasons, i decided to write my own implementation. But if you don't care about any of that, you should absolutely check out one of these, much more widely used, projects:

• symfony/dotenv
• vlucas/phpdotenv
• josegonzalez/php-dotenv

To do

More tests.