146 lines
3.2 KiB
PHP
146 lines
3.2 KiB
PHP
<?php namespace Laravel;
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class Config {
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/**
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* All of the loaded configuration items.
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*
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* The configuration arrays are keyed by their owning file name.
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*
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* @var array
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*/
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protected $items = array();
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/**
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* The paths to the configuration files.
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*
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* @var array
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*/
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protected $paths = array();
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/**
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* Create a new configuration manager instance.
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*
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* @param array $paths
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* @return void
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*/
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public function __construct($paths)
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{
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$this->paths = $paths;
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}
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/**
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* Determine if a configuration item or file exists.
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*
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* @param string $key
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* @return bool
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*/
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public function has($key)
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{
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return ! is_null($this->get($key));
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}
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/**
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* Get a configuration item.
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*
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* If the name of a configuration file is passed without specifying an item, the
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* entire configuration array will be returned.
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*
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* <code>
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* // Get the "timezone" option from the "application" file
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* $timezone = Config::get('application.timezone');
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*
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* // Get the SQLite connection configuration from the "database" file
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* $sqlite = Config::get('database.connections.sqlite');
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*
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* // Get a configuration option and return "Fred" if it doesn't exist
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* $option = Config::get('config.option', 'Fred');
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* </code>
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*
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* @param string $key
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* @param string $default
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* @return array
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*/
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public function get($key, $default = null)
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{
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list($file, $key) = $this->parse($key);
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if ( ! $this->load($file))
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{
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return ($default instanceof \Closure) ? call_user_func($default) : $default;
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}
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if (is_null($key)) return $this->items[$file];
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return Arr::get($this->items[$file], $key, $default);
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}
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/**
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* Set a configuration item.
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*
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* If a specific configuration item is not specified, the entire configuration
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* array will be replaced with the given value.
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*
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* <code>
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* // Set the "timezone" option in the "application" file
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* Config::set('application.timezone', 'America/Chicago');
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*
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* // Set the entire "session" array to an empty array
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* Config::set('session', array());
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* </code>
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*
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* @param string $key
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* @param mixed $value
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* @return void
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*/
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public function set($key, $value)
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{
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list($file, $key) = $this->parse($key);
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$this->load($file);
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(is_null($key)) ? Arr::set($this->items, $file, $value) : Arr::set($this->items[$file], $key, $value);
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}
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/**
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* Parse a configuration key and return its file and key segments.
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*
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* Configuration keys follow a {file}.{key} convention.
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*
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* @param string $key
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* @return array
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*/
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protected function parse($key)
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{
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$segments = explode('.', $key);
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$key = (count($segments) > 1) ? implode('.', array_slice($segments, 1)) : null;
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return array($segments[0], $key);
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}
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/**
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* Load all of the configuration items from a module configuration file.
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*
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* If the configuration file has already been loaded, it will not be loaded again.
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*
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* @param string $file
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* @return bool
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*/
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protected function load($file)
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{
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if (isset($this->items[$file])) return true;
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$config = array();
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foreach ($this->paths as $directory)
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{
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$config = (file_exists($path = $directory.$file.EXT)) ? array_merge($config, require $path) : $config;
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}
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if (count($config) > 0) $this->items[$file] = $config;
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return isset($this->items[$file]);
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}
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} |