EdmondsCommerce\DoctrineStaticMeta\SimpleEnv

Complexity

Total Complexity

9

Size/Duplication

Total Lines	51
Duplicated Lines	0 %

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	processLine()	0	35	5
A	setEnv()	0	11	4

<?php declare(strict_types=1);

namespace EdmondsCommerce\DoctrineStaticMeta;

use EdmondsCommerce\DoctrineStaticMeta\Exception\ConfigException;

/**
 * Class SimpleEnv
 *
 * A simplistic take on reading .env files
 *
 * We only require parsing very simple key=value pairs
 *
 * For a more fully featured library, see https://github.com/vlucas/phpdotenv
 *
 * @package EdmondsCommerce\DoctrineStaticMeta
 * @SuppressWarnings(PHPMD.Superglobals)
 */
class SimpleEnv
{
    public static function setEnv(string $filePath, array &$server = null): void
    {
        if (null === $server) {
            $server =& $_SERVER;
        }
        if (!file_exists($filePath)) {
            throw new ConfigException('Env file path '.$filePath.' does not exist');
        }
        $lines = file($filePath);
        foreach ($lines as $line) {
            self::processLine($line, $server);
        }
    }

    private static function processLine(string $line, array &$server)
    {
        #skip comments
        if (preg_match('%^\s*#%', $line)) {
            return;
        }
        preg_match(
            #strip leading spaces
            '%^[[:space:]]*'
            #strip leading `export`
            .'(?:export[[:space:]]+|)'
            #parse out the key and assign to named match
            .'(?<key>[^=]+?)'
            #strip out `=`, possibly with space around it
            .'[[:space:]]*=[[:space:]]*'
            #strip out possible quotes
            ."(?:\"|'|)"
            #parse out the value and assign to named match
            ."(?<value>[^\"']+?)"
            #strip out possible quotes
            ."(?:\"|'|)"
            #string out trailing space to end of line
            .'[[:space:]]*$%',
            $line,
            $matches
        );
        if (5 !== count($matches)) {
            return;
        }
        list(, $key, $value) = $matches;
        if (empty($value)) {
            $value = '';
        }
        if (!isset($server[$key])) {
            $server[$key] = $value;
        }
    }
}