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<?php
/**
* Case-insensitive dictionary, suitable for HTTP headers
*
* @package Requests
* @subpackage Utilities
*/
/**
* Case-insensitive dictionary, suitable for HTTP headers
*
* @package Requests
* @subpackage Utilities
*/
class Requests_Utility_CaseInsensitiveDictionary implements ArrayAccess, IteratorAggregate {
/**
* Actual item data
*
* @var array
*/
protected $data = array();
/**
* Creates a case insensitive dictionary.
*
* @param array $data Dictionary/map to convert to case-insensitive
*/
public function __construct(array $data = array()) {
foreach ($data as $key => $value) {
$this->offsetSet($key, $value);
}
}
/**
* Check if the given item exists
*
* @param string $key Item key
* @return boolean Does the item exist?
*/
public function offsetExists($key) {
$key = strtolower($key);
return isset($this->data[$key]);
}
/**
* Get the value for the item
*
* @param string $key Item key
* @return string|null Item value (null if offsetExists is false)
*/
public function offsetGet($key) {
$key = strtolower($key);
if (!isset($this->data[$key])) {
return null;
}
return $this->data[$key];
}
/**
* Set the given item
*
* @throws Requests_Exception On attempting to use dictionary as list (`invalidset`)
*
* @param string $key Item name
* @param string $value Item value
*/
public function offsetSet($key, $value) {
if ($key === null) {
throw new Requests_Exception('Object is a dictionary, not a list', 'invalidset');
}
$key = strtolower($key);
$this->data[$key] = $value;
}
/**
* Unset the given header
*
* @param string $key
*/
public function offsetUnset($key) {
unset($this->data[strtolower($key)]);
}
/**
* Get an iterator for the data
*
* @return ArrayIterator
*/
public function getIterator() {
return new ArrayIterator($this->data);
}
/**
* Get the headers as an array
*
* @return array Header data
*/
public function getAll() {
return $this->data;
}
}
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