Length.php

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<?php
 
class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
{
 
    protected $min;
 
    protected $max;
 
    public function __construct($min = null, $max = null)
    {
        $this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
        $this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
    }
 
    public function validate($string, $config, $context)
    {
        $string = $this->parseCDATA($string);
 
        // Optimizations
        if ($string === '') {
            return false;
        }
        if ($string === '0') {
            return '0';
        }
        if (strlen($string) === 1) {
            return false;
        }
 
        $length = HTMLPurifier_Length::make($string);
        if (!$length->isValid()) {
            return false;
        }
 
        if ($this->min) {
            $c = $length->compareTo($this->min);
            if ($c === false) {
                return false;
            }
            if ($c < 0) {
                return false;
            }
        }
        if ($this->max) {
            $c = $length->compareTo($this->max);
            if ($c === false) {
                return false;
            }
            if ($c > 0) {
                return false;
            }
        }
        return $length->toString();
    }
}
 
// vim: et sw=4 sts=4