lib/vendor/symfony/http-foundation/AcceptHeaderItem.php

<?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;
 
class AcceptHeaderItem
{
    private $value;
 
    private $quality = 1.0;
 
    private $index = 0;
 
    private $attributes = array();
 
    public function __construct($value, array $attributes = array())
    {
        $this->value = $value;
        foreach ($attributes as $name => $value) {
            $this->setAttribute($name, $value);
        }
    }
 
    public static function fromString($itemValue)
    {
        $bits = preg_split('/\s*(?:;*("[^"]+");*|;*(\'[^\']+\');*|;+)\s*/', $itemValue, 0, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
        $value = array_shift($bits);
        $attributes = array();
 
        $lastNullAttribute = null;
        foreach ($bits as $bit) {
            if (($start = substr($bit, 0, 1)) === ($end = substr($bit, -1)) && ($start === '"' || $start === '\'')) {
                $attributes[$lastNullAttribute] = substr($bit, 1, -1);
            } elseif ('=' === $end) {
                $lastNullAttribute = $bit = substr($bit, 0, -1);
                $attributes[$bit] = null;
            } else {
                $parts = explode('=', $bit);
                $attributes[$parts[0]] = isset($parts[1]) && strlen($parts[1]) > 0 ? $parts[1] : '';
            }
        }
 
        return new self(($start = substr($value, 0, 1)) === ($end = substr($value, -1)) && ($start === '"' || $start === '\'') ? substr($value, 1, -1) : $value, $attributes);
    }
 
    public function __toString()
    {
        $string = $this->value.($this->quality < 1 ? ';q='.$this->quality : '');
        if (count($this->attributes) > 0) {
            $string .= ';'.implode(';', array_map(function ($name, $value) {
                return sprintf(preg_match('/[,;=]/', $value) ? '%s="%s"' : '%s=%s', $name, $value);
            }, array_keys($this->attributes), $this->attributes));
        }
 
        return $string;
    }
 
    public function setValue($value)
    {
        $this->value = $value;
 
        return $this;
    }
 
    public function getValue()
    {
        return $this->value;
    }
 
    public function setQuality($quality)
    {
        $this->quality = $quality;
 
        return $this;
    }
 
    public function getQuality()
    {
        return $this->quality;
    }
 
    public function setIndex($index)
    {
        $this->index = $index;
 
        return $this;
    }
 
    public function getIndex()
    {
        return $this->index;
    }
 
    public function hasAttribute($name)
    {
        return isset($this->attributes[$name]);
    }
 
    public function getAttribute($name, $default = null)
    {
        return isset($this->attributes[$name]) ? $this->attributes[$name] : $default;
    }
 
    public function getAttributes()
    {
        return $this->attributes;
    }
 
    public function setAttribute($name, $value)
    {
        if ('q' === $name) {
            $this->quality = (float) $value;
        } else {
            $this->attributes[$name] = (string) $value;
        }
 
        return $this;
    }
}