130 lines
3.2 KiB
PHP
130 lines
3.2 KiB
PHP
<?php namespace System;
|
|
|
|
class Config {
|
|
|
|
/**
|
|
* All of the loaded configuration items.
|
|
*
|
|
* @var array
|
|
*/
|
|
private static $items = array();
|
|
|
|
/**
|
|
* Determine if a configuration item exists.
|
|
*
|
|
* @param string $key
|
|
* @return bool
|
|
*/
|
|
public static function has($key)
|
|
{
|
|
return ! is_null(static::get($key));
|
|
}
|
|
|
|
/**
|
|
* Get a configuration item.
|
|
*
|
|
* @param string $key
|
|
* @param string $default
|
|
* @return mixed
|
|
*/
|
|
public static function get($key, $default = null)
|
|
{
|
|
// -----------------------------------------------------
|
|
// If a dot is not present, we will just return the
|
|
// entire configuration array.
|
|
//
|
|
// If the configuration file does not exist, the default
|
|
// value will be returned.
|
|
// -----------------------------------------------------
|
|
if(strpos($key, '.') === false)
|
|
{
|
|
static::load($key);
|
|
|
|
return (array_key_exists($key, static::$items)) ? static::$items[$key] : $default;
|
|
}
|
|
|
|
list($file, $key) = static::parse($key);
|
|
|
|
static::load($file);
|
|
|
|
// -----------------------------------------------------
|
|
// If the file doesn't exist, return the default.
|
|
// -----------------------------------------------------
|
|
if ( ! array_key_exists($file, static::$items))
|
|
{
|
|
return $default;
|
|
}
|
|
|
|
// -----------------------------------------------------
|
|
// Return the configuration item. If the item doesn't
|
|
// exist, the default value will be returned.
|
|
// -----------------------------------------------------
|
|
return (array_key_exists($key, static::$items[$file])) ? static::$items[$file][$key] : $default;
|
|
}
|
|
|
|
/**
|
|
* Set a configuration item.
|
|
*
|
|
* @param string $key
|
|
* @param mixed $value
|
|
* @return void
|
|
*/
|
|
public static function set($key, $value)
|
|
{
|
|
list($file, $key) = static::parse($key);
|
|
|
|
static::load($file);
|
|
|
|
static::$items[$file][$key] = $value;
|
|
}
|
|
|
|
/**
|
|
* Parse a configuration key.
|
|
*
|
|
* @param string $key
|
|
* @return array
|
|
*/
|
|
private static function parse($key)
|
|
{
|
|
// -----------------------------------------------------
|
|
// The left side of the dot is the file name, while
|
|
// the right side of the dot is the item within that
|
|
// file being requested.
|
|
//
|
|
// This syntax allows for the easy retrieval and setting
|
|
// of configuration items.
|
|
// -----------------------------------------------------
|
|
$segments = explode('.', $key);
|
|
|
|
if (count($segments) < 2)
|
|
{
|
|
throw new \Exception("Invalid configuration key [$key].");
|
|
}
|
|
|
|
return array($segments[0], implode('.', array_slice($segments, 1)));
|
|
}
|
|
|
|
/**
|
|
* Load all of the configuration items.
|
|
*
|
|
* @param string $file
|
|
* @return void
|
|
*/
|
|
public static function load($file)
|
|
{
|
|
// -----------------------------------------------------
|
|
// Bail out if already loaded or doesn't exist.
|
|
// -----------------------------------------------------
|
|
if (array_key_exists($file, static::$items) or ! file_exists($path = APP_PATH.'config/'.$file.EXT))
|
|
{
|
|
return;
|
|
}
|
|
|
|
// -----------------------------------------------------
|
|
// Load the configuration array into the array of items.
|
|
// The items array is keyed by filename.
|
|
// -----------------------------------------------------
|
|
static::$items[$file] = require $path;
|
|
}
|
|
|
|
} |