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<?php |
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/* |
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* This file is part of the PHP-ENV package. |
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* |
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* (c) Jitendra Adhikari <[email protected]> |
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* <https://github.com/adhocore> |
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* |
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* Licensed under MIT license. |
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*/ |
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namespace Ahc\Env; |
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/** |
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* DotEnv loader for PHP. |
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* |
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* @author Jitendra Adhikari <[email protected]> |
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* @license MIT |
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* |
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* @link https://github.com/adhocore/env |
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*/ |
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class Loader |
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{ |
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/** |
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* Put the parsed key value pair into $_ENV superglobal. |
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*/ |
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const ENV = 1; |
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/** |
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* Put the parsed key value pair into putenv(). |
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*/ |
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const PUTENV = 2; |
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/** |
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* Put the parsed key value pair into $_SERVER superglobal. |
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*/ |
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const SERVER = 4; |
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/** |
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* Put the parsed key value pair into all of the sources. |
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*/ |
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const ALL = 7; |
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/** |
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* Loads .env file and puts the key value pair in one or all of putenv()/$_ENV/$_SERVER. |
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* |
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* @param string $file The full path of .env file. |
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* @param bool $override Whether to override already available env key. |
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* @param int $mode Where to load the env vars. Defaults to putenv(). Use pipe for multiple. |
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* Example: Loader::SERVER | Loader::ENV | Loader::PUTENV |
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* |
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* @throws \InvalidArgumentException If the file does not exist or cant be read. |
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* @throws \RuntimeException If the file content cant be parsed. |
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*/ |
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public function load($file, $override = false, $mode = self::PUTENV) |
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{ |
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if (!\is_file($file)) { |
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throw new \InvalidArgumentException('The .env file does not exist or is not readable'); |
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} |
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// Get file contents, fix the comments and parse as ini. |
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$content = \preg_replace('/^\s*#/m', ';', \file_get_contents($file)); |
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$parsed = \parse_ini_string($content, false, INI_SCANNER_RAW); |
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if ($parsed === false) { |
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throw new \RuntimeException('The .env file cannot be parsed due to malformed values'); |
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} |
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$this->setEnv($parsed, (bool) $override, (int) $mode); |
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} |
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/** |
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* Set the env values from given vars. |
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* |
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* @param array $vars |
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* @param bool $override |
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* @param int $mode |
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*/ |
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protected function setEnv(array $vars, $override, $mode = self::PUTENV) |
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{ |
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$default = \microtime(1); |
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foreach ($vars as $key => $value) { |
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// Skip if we already have value and cant override. |
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if (!$override && $default !== Retriever::getEnv($key, $default)) { |
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continue; |
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} |
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$this->set($key, $value, $mode); |
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} |
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$this->resolveRefs($vars, $mode); |
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} |
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protected function set($key, $value, $mode) |
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{ |
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$this->toEnv($key, $value, $mode); |
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$this->toServer($key, $value, $mode); |
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$this->toPutenv($key, $value, $mode); |
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} |
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protected function resolveRefs($vars, $mode) |
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{ |
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foreach ($vars as $key => $value) { |
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if (!$value || \strpos($value, '${') === false) { |
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continue; |
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} |
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$value = \preg_replace_callback('~\$\{(\w+)\}~', function ($m) { |
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return (null === $ref = Retriever::getEnv($m[1], null)) ? $m[0] : $ref; |
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}, $value); |
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$this->set($key, $value, $mode); |
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} |
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} |
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private function toEnv($key, $value, $mode) |
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{ |
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if ($mode & self::ENV) { |
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$_ENV[$key] = $value; |
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} |
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} |
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private function toServer($key, $value, $mode) |
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{ |
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if ($mode & self::SERVER) { |
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$_SERVER[$key] = $value; |
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} |
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} |
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private function toPutenv($key, $value, $mode) |
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{ |
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if ($mode & self::PUTENV) { |
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\putenv("$key=$value"); |
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} |
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} |
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} |
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adhocore /
php-env
