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<?php |
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/** |
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* This file is part of the m1\vars library |
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* |
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* (c) m1 <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @package m1/vars |
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* @version 1.1.0 |
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* @author Miles Croxford <[email protected]> |
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* @copyright Copyright (c) Miles Croxford <[email protected]> |
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* @license http://github.com/m1/vars/blob/master/LICENSE |
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* @link http://github.com/m1/vars/blob/master/README.MD Documentation |
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*/ |
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namespace M1\Vars; |
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use M1\Vars\Cache\CacheProvider; |
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use M1\Vars\Loader\LoaderProvider; |
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use M1\Vars\Resource\AbstractResource; |
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use M1\Vars\Resource\ResourceProvider; |
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use M1\Vars\Traits\PathTrait; |
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use M1\Vars\Traits\TransformerTrait; |
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use M1\Vars\Variables\VariableProvider; |
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/** |
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* Vars core class |
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* |
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* @since 0.1.0 |
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*/ |
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class Vars extends AbstractResource |
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{ |
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/** |
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* Used for path functions and variables |
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*/ |
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use PathTrait; |
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/** |
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* Used for to* functions |
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*/ |
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use TransformerTrait; |
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/** |
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* The cache object if the cache is wanted, else false |
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* |
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* @var \M1\Vars\Cache\CacheProvider $cache |
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*/ |
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public $cache; |
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/** |
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* The default options for Vars |
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* |
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* @var array $default_options |
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*/ |
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private $default_options = array( |
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'path' => null, |
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'cache' => true, |
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'cache_path' => null, |
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'cache_expire' => 300, // 5 minutes |
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'loaders' => array('env', 'ini', 'json', 'php', 'toml', 'yaml', 'xml',), |
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'merge_globals' => true, |
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); |
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/** |
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* The global file variables |
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* |
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* @var array globals |
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*/ |
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private $globals = array(); |
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/** |
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* The loaderProvider for Vars supplies the file loaders and the extensions that are supported |
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* |
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* @var \M1\Vars\Loader\LoaderProvider $loader |
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*/ |
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public $loader; |
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/** |
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* Have the base and cache paths been set |
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* |
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* @var bool $paths_loaded |
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*/ |
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private $paths_loaded = false; |
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/** |
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* The imported resources |
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* |
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* @var array $resources |
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*/ |
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private $resources = array(); |
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/** |
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* The variable provider |
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* |
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* @var \M1\Vars\Variables\VariableProvider $variables |
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*/ |
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public $variables; |
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/** |
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* Creates a new instance of Vars |
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* |
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* @param string|array $resource The main configuration resource |
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* @param array $options The options being used for Vars |
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*/ |
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public function __construct($resource, $options = array()) |
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{ |
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$options = $this->parseOptions($options); |
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$this->makeCache($options, $resource); |
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$this->makePaths($options); |
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if (!$this->cache->checkCache()) { |
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$this->makeLoader($options); |
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$this->makeVariables($options); |
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$resource = new ResourceProvider($this, $resource); |
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} |
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if ($this->cache->isHit()) { |
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$this->loadFromCache(); |
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} else { |
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$resource->mergeParentContent(); |
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$this->content = $this->mergeGlobals($resource->getContent(), $options); |
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$this->cache->setTime(time()); |
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$this->cache->makeCache($this); |
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} |
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} |
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/** |
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* Parses the options so Vars can use them |
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* |
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* @param array $options The options being used for Vars |
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* |
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* @return array The parsed options |
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*/ |
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private function parseOptions(array $options) |
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{ |
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$parsed_options = array_merge($this->default_options, $options); |
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$parsed_options['loaders'] = (isset($options['loaders'])) ? |
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$options['loaders'] : $this->default_options['loaders']; |
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return $parsed_options; |
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} |
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/** |
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* Makes the CacheProvider with the options |
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* |
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* @param array $options The options being used for Vars |
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* @param array|string $resource The main configuration resource |
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*/ |
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private function makeCache($options, $resource) |
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{ |
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$cache = new CacheProvider($resource, $options); |
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$this->cache = $cache; |
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} |
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/** |
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* Sets the base path if the options have been set and the cache path if the cache path has not been set but the |
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* base path has |
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* |
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* @param array $options The options being used for Vars |
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*/ |
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private function makePaths($options) |
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{ |
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$this->setPath($options['path']); |
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if (is_null($options['cache_path']) && !is_null($options['path'])) { |
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$this->cache->setPath($options['path']); |
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$this->paths_loaded = true; |
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} |
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} |
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/** |
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* Makes the LoaderProvider with the options |
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* |
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* @param array $options The options being used for Vars |
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*/ |
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private function makeLoader($options) |
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{ |
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$loader = new LoaderProvider($options, $this->default_options['loaders']); |
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$this->loader = $loader; |
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} |
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/** |
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* Sets the replacement variables if the option has been set |
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* |
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* @param array|null $options The options being used for Vars |
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*/ |
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private function makeVariables($options) |
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{ |
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$this->variables = new VariableProvider($this); |
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if (isset($options['replacements'])) { |
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$this->variables->rstore->load($options['replacements']); |
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} |
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} |
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/** |
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* Loads the cached file into the current class |
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*/ |
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private function loadFromCache() |
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{ |
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$this->cache->load(); |
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$passed_keys = array( |
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'path', |
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'content', |
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'extensions', |
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'loaders', |
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'resources', |
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'replacements', |
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'globals', |
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); |
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$loaded_vars = get_object_vars($this->cache->getLoadedVars()); |
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foreach ($loaded_vars as $key => $value) { |
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if (in_array($key, $passed_keys)) { |
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$this->$key = $value; |
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} |
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} |
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$this->cache->setTime($loaded_vars['cache']->getTime()); |
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} |
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/** |
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* Checks if the base and cache paths have been set, if not\ set then will use the $resource as the base path |
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* |
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* @param string $resource The resource to use to set the paths if they haven't been set |
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*/ |
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public function pathsLoadedCheck($resource) |
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{ |
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if (!$this->paths_loaded) { |
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$path = $this->getPath(); |
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if (!$path) { |
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$file = pathinfo(realpath($resource)); |
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$path = $file['dirname']; |
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$this->setPath($path); |
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} |
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if ($this->cache->getProvide() && !$this->cache->getPath()) { |
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$this->cache->setPath($path); |
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} |
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$this->paths_loaded = true; |
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} |
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} |
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/** |
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* Gets the _globals from the file and merges them if merge_globals is true |
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* |
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* @param array $content The unparsed content |
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* @param array $options The options being used for Vars |
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* |
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* @return array $content The parsed content |
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*/ |
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private function mergeGlobals($content, $options) |
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{ |
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if (array_key_exists('_globals', $content)) { |
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$this->globals = $content['_globals']; |
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if ($options['merge_globals']) { |
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$content = array_replace_recursive($content, $content['_globals']); |
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} |
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unset($content['_globals']); |
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} |
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return $content; |
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} |
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/** |
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* Adds a resource to $this->resources |
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* |
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* @param string $resource Resource to add to the stack |
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* |
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* @return int The position of the added resource |
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*/ |
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public function addResource($resource) |
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{ |
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$r = realpath($resource); |
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$pos = count($this->resources); |
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$this->resources[$pos] = $r; |
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return $pos; |
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} |
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/** |
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* Updates the string resource with the FileResource |
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* |
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* @param \M1\Vars\Resource\FileResource $resource The FileResource to add |
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* @param int $pos The position of the string resource |
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* |
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* @return \M1\Vars\Vars |
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*/ |
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public function updateResource($resource, $pos) |
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{ |
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$this->resources[$pos] = $resource; |
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return $this; |
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} |
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/** |
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* Tests to see if the resource has been imported already -- this is to avoid getting into a infinite loop |
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* |
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* @param \M1\Vars\Resource\FileResource|string $resource Resource to check |
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* |
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* @return bool Has resource already been imported |
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*/ |
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public function resourceImported($resource) |
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{ |
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$resource = realpath($resource); |
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foreach ($this->getResources() as $r) { |
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if ((is_a($r, 'M1\Vars\Resource\FileResource') && $resource === $r->getFile()) || |
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(is_string($r) && $resource === $r)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Searches the resource stack for a certain resource |
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* |
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* @param string $resource The resource to search for |
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* |
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* @return \M1\Vars\Resource\FileResource|bool Returns the resource if found |
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*/ |
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public function getResource($resource) |
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{ |
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foreach ($this->getResources() as $r) { |
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if ($resource === $r->getFilename()) { |
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return $r; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns the imported resources |
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* |
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* @return array The Vars imported resources |
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*/ |
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public function getResources() |
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{ |
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return $this->resources; |
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} |
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/** |
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* Returns the imported resources |
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* |
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* @return array The Vars imported resources |
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*/ |
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public function getGlobals() |
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{ |
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return $this->globals; |
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} |
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/** |
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* Returns the CacheProvider if set |
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* |
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* @return \M1\Vars\Cache\CacheProvider The CacheProvider |
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*/ |
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public function getCache() |
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{ |
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return $this->cache; |
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} |
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} |
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If a variable is not always an object, we recommend to add an additional type check to ensure your method call is safe: