<?php

/**
 * Post-transform that copies lang's value to xml:lang (and vice-versa)
 * @note Theoretically speaking, this could be a pre-transform, but putting
 *       post is more efficient.
 */
class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
{

    /**
     * @param array $attr
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return array
     */
    public function transform($attr, $config, $context)
    {
        $lang = isset($attr['lang']) ? $attr['lang'] : false;
        $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;

        if ($lang !== false && $xml_lang === false) {
            $attr['xml:lang'] = $lang;
        } elseif ($xml_lang !== false) {
            $attr['lang'] = $xml_lang;
        }
        return $attr;
    }
}

// vim: et sw=4 sts=4

• [F] Background.php
  Delete
• [F] BdoDir.php
  Delete
• [F] BgColor.php
  Delete
• [F] BoolToCSS.php
  Delete
• [F] Border.php
  Delete
• [F] EnumToCSS.php
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• [F] ImgRequired.php
  Delete
• [F] ImgSpace.php
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• [F] Input.php
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• [F] Lang.php
  Delete
• [F] Length.php
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• [F] Name.php
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• [F] NameSync.php
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• [F] Nofollow.php
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• [F] SafeEmbed.php
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• [F] SafeObject.php
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• [F] SafeParam.php
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• [F] ScriptRequired.php
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• [F] TargetBlank.php
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• [F] TargetNoopener.php
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• [F] TargetNoreferrer.php
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• [F] Textarea.php
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