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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation;
/**
* Represents an Accept-* header item.
*
* @author Jean-François Simon <contact@jfsimon.fr>
*/
class AcceptHeaderItem
{
private $value;
private $quality = 1.0;
private $index = 0;
private $attributes = [];
public function __construct(string $value, array $attributes = [])
{
$this->value = $value;
foreach ($attributes as $name => $value) {
$this->setAttribute($name, $value);
}
}
/**
* Builds an AcceptHeaderInstance instance from a string.
*
* @return self
*/
public static function fromString(?string $itemValue)
{
$parts = HeaderUtils::split($itemValue ?? '', ';=');
$part = array_shift($parts);
$attributes = HeaderUtils::combine($parts);
return new self($part[0], $attributes);
}
/**
* Returns header value's string representation.
*
* @return string
*/
public function __toString()
{
$string = $this->value.($this->quality < 1 ? ';q='.$this->quality : '');
if (\count($this->attributes) > 0) {
$string .= '; '.HeaderUtils::toString($this->attributes, ';');
}
return $string;
}
/**
* Set the item value.
*
* @return $this
*/
public function setValue(string $value)
{
$this->value = $value;
return $this;
}
/**
* Returns the item value.
*
* @return string
*/
public function getValue()
{
return $this->value;
}
/**
* Set the item quality.
*
* @return $this
*/
public function setQuality(float $quality)
{
$this->quality = $quality;
return $this;
}
/**
* Returns the item quality.
*
* @return float
*/
public function getQuality()
{
return $this->quality;
}
/**
* Set the item index.
*
* @return $this
*/
public function setIndex(int $index)
{
$this->index = $index;
return $this;
}
/**
* Returns the item index.
*
* @return int
*/
public function getIndex()
{
return $this->index;
}
/**
* Tests if an attribute exists.
*
* @return bool
*/
public function hasAttribute(string $name)
{
return isset($this->attributes[$name]);
}
/**
* Returns an attribute by its name.
*
* @param mixed $default
*
* @return mixed
*/
public function getAttribute(string $name, $default = null)
{
return $this->attributes[$name] ?? $default;
}
/**
* Returns all attributes.
*
* @return array
*/
public function getAttributes()
{
return $this->attributes;
}
/**
* Set an attribute.
*
* @return $this
*/
public function setAttribute(string $name, string $value)
{
if ('q' === $name) {
$this->quality = (float) $value;
} else {
$this->attributes[$name] = $value;
}
return $this;
}
}
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