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improved comments in config class.

This commit is contained in:
Taylor Otwell 2011-06-16 20:21:23 -05:00
parent e467c831cc
commit 5a4e6ebc75
1 changed files with 18 additions and 18 deletions
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36
system/config.php
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@ -17,17 +17,16 @@ class Config {
*/ */
public static function get($key) public static function get($key)
{ {
// -----------------------------------------------------
// Parse the key to separate the file and key name.
// -----------------------------------------------------
list($file, $key) = static::parse($key); list($file, $key) = static::parse($key);
// -----------------------------------------------------
// Load the appropriate configuration file.
// -----------------------------------------------------
static::load($file); static::load($file);
return (array_key_exists($key, static::$items[$file])) ? static::$items[$file][$key] : null; if (array_key_exists($key, static::$items[$file]))
{
return static::$items[$file][$key];
}
throw new \Exception("Configuration item [$key] is not defined.");
} }
/** /**
@ -39,14 +38,8 @@ public static function get($key)
*/ */
public static function set($key, $value) public static function set($key, $value)
{ {
// -----------------------------------------------------
// Parse the key to separate the file and key name.
// -----------------------------------------------------
list($file, $key) = static::parse($key); list($file, $key) = static::parse($key);
// -----------------------------------------------------
// Load the appropriate configuration file.
// -----------------------------------------------------
static::load($file); static::load($file);
static::$items[$file][$key] = $value; static::$items[$file][$key] = $value;
@ -60,6 +53,14 @@ public static function set($key, $value)
*/ */
private static function parse($key) 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); $segments = explode('.', $key);
if (count($segments) < 2) if (count($segments) < 2)
@ -67,11 +68,6 @@ private static function parse($key)
throw new \Exception("Invalid configuration key [$key]."); throw new \Exception("Invalid configuration key [$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.
// -----------------------------------------------------
return array($segments[0], implode('.', array_slice($segments, 1))); return array($segments[0], implode('.', array_slice($segments, 1)));
} }
@ -96,6 +92,10 @@ public static function load($file)
throw new \Exception("Configuration file [$file] does not exist."); throw new \Exception("Configuration file [$file] does not exist.");
} }
// -----------------------------------------------------
// Load the configuration array into the array of items.
// The items array is keyed by filename.
// -----------------------------------------------------
static::$items[$file] = require $path; static::$items[$file] = require $path;
} }