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<?php
/**
* Validates tel (for phone numbers).
*
* The relevant specifications for this protocol are RFC 3966 and RFC 5341,
* but this class takes a much simpler approach: we normalize phone
* numbers so that they only include (possibly) a leading plus,
* and then any number of digits and x'es.
*/
class HTMLPurifier_URIScheme_tel extends HTMLPurifier_URIScheme
{
/**
* @type bool
*/
public $browsable = false;
/**
* @type bool
*/
public $may_omit_host = true;
/**
* @param HTMLPurifier_URI $uri
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool
*/
public function doValidate(&$uri, $config, $context)
{
$uri->userinfo = null;
$uri->host = null;
$uri->port = null;
// Delete all non-numeric characters, non-x characters
// from phone number, EXCEPT for a leading plus sign.
$uri->path = preg_replace('/(?!^\+)[^\dx]/', '',
// Normalize e(x)tension to lower-case
str_replace('X', 'x', $uri->path));
return true;
}
}
// vim: et sw=4 sts=4
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