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<?php |
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/** |
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* Phoole (PHP7.2+) |
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* |
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* @category Library |
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* @package Phoole\Config |
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* @copyright Copyright (c) 2019 Hong Zhang |
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*/ |
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declare(strict_types=1); |
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namespace Phoole\Config\Util; |
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use Phoole\Base\Tree\Tree; |
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use Phoole\Base\Reader\Reader; |
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/** |
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* Config file loader |
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* |
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* @package Phoole\Config |
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*/ |
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class Loader |
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{ |
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/** |
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* tree object |
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*/ |
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protected $tree; |
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/** |
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* reader object |
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*/ |
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protected $reader; |
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/** |
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* conf directory |
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*/ |
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protected $root_dir; |
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/** |
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* default environment |
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*/ |
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protected $environment; |
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/** |
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* Constructor |
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* |
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* @param string $rootDir |
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* @param string $environment |
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*/ |
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public function __construct(string $rootDir, string $environment = '') |
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{ |
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$this->tree = new Tree(); |
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$this->reader = new Reader(); |
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$this->environment = $environment; |
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$this->root_dir = rtrim($rootDir, "/\\"); |
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} |
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/** |
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* Load group(specific) config(s) base on environment value. |
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* |
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* - if $environment == '', use the default environment |
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* - if $group == '', load all avaiable groups |
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* |
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* ```php |
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* $this->load('db')->load('db', 'production/host1'); |
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* ``` |
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* |
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* @param string $group |
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* @param string $environment |
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* @return $this |
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*/ |
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public function load(string $group = '', string $environment = ''): object |
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{ |
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foreach ($this->globFiles($group, $environment) as $file) { |
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$grp = explode('.', basename($file), 2)[0]; |
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$this->tree->add($grp, $this->reader->readFile($file)); |
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} |
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return $this; |
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} |
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/** |
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* @return Tree |
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*/ |
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public function getTree(): Tree |
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{ |
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return $this->tree; |
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} |
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/** |
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* Returns an array of conf files to read from |
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* |
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* @param string $group |
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* @param string $environment |
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* @return array |
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*/ |
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protected function globFiles(string $group, string $environment): array |
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{ |
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$files = []; |
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$grp = ($group ?: '*') . '.*'; |
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foreach ($this->searchDirs($environment) as $dir) { |
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$files = array_merge($files, glob($dir . \DIRECTORY_SEPARATOR . $grp)); |
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} |
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return $files; |
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} |
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/** |
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* Returns an array of directoris to search thru |
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* |
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* @param string $environment |
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* @return array |
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*/ |
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protected function searchDirs(string $environment): array |
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{ |
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$envs = preg_split( |
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'~/~', |
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trim($environment ?: $this->environment, '/'), |
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-1, |
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\PREG_SPLIT_NO_EMPTY |
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); |
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$d = $this->root_dir; |
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$dirs[] = $d; |
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foreach ($envs as $p) { |
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$d .= \DIRECTORY_SEPARATOR . $p; |
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$dirs[] = $d; |
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} |
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return $dirs; |
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} |
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/** |
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* clone tree also |
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*/ |
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public function __clone() |
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{ |
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$this->tree = clone $this->tree; |
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$this->reader = clone $this->reader; |
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} |
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} |
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