1<?php
  2
  3namespace Illuminate\Support;
  4
  5use Dotenv\Repository\Adapter\EnvConstAdapter;
  6use Dotenv\Repository\Adapter\PutenvAdapter;
  7use Dotenv\Repository\Adapter\ServerConstAdapter;
  8use Dotenv\Repository\RepositoryBuilder;
  9use PhpOption\Option;
 10
 11class Env
 12{
 13    /**
 14     * Indicates if the putenv adapter is enabled.
 15     *
 16     * @var bool
 17     */
 18    protected static $putenv = true;
 19
 20    /**
 21     * The environment repository instance.
 22     *
 23     * @var \Dotenv\Repository\RepositoryInterface|null
 24     */
 25    protected static $repository;
 26
 27    /**
 28     * Enable the putenv adapter.
 29     *
 30     * @return void
 31     */
 32    public static function enablePutenv()
 33    {
 34        static::$putenv = true;
 35        static::$repository = null;
 36    }
 37
 38    /**
 39     * Disable the putenv adapter.
 40     *
 41     * @return void
 42     */
 43    public static function disablePutenv()
 44    {
 45        static::$putenv = false;
 46        static::$repository = null;
 47    }
 48
 49    /**
 50     * Get the environment repository instance.
 51     *
 52     * @return \Dotenv\Repository\RepositoryInterface
 53     */
 54    public static function getRepository()
 55    {
 56        if (static::$repository === null) {
 57            $adapters = array_merge(
 58                [new EnvConstAdapter, new ServerConstAdapter],
 59                static::$putenv ? [new PutenvAdapter] : []
 60            );
 61
 62            static::$repository = RepositoryBuilder::create()
 63                ->withReaders($adapters)
 64                ->withWriters($adapters)
 65                ->immutable()
 66                ->make();
 67        }
 68
 69        return static::$repository;
 70    }
 71
 72    /**
 73     * Gets the value of an environment variable.
 74     *
 75     * @param  string  $key
 76     * @param  mixed  $default
 77     * @return mixed
 78     */
 79    public static function get($key, $default = null)
 80    {
 81        return Option::fromValue(static::getRepository()->get($key))
 82            ->map(function ($value) {
 83                switch (strtolower($value)) {
 84                    case 'true':
 85                    case '(true)':
 86                        return true;
 87                    case 'false':
 88                    case '(false)':
 89                        return false;
 90                    case 'empty':
 91                    case '(empty)':
 92                        return '';
 93                    case 'null':
 94                    case '(null)':
 95                        return;
 96                }
 97
 98                if (preg_match('/\A([\'"])(.*)\1\z/', $value, $matches)) {
 99                    return $matches[2];
100                }
101
102                return $value;
103            })
104            ->getOrCall(function () use ($default) {
105                return value($default);
106            });
107    }
108}
109