/**
* Retrieves sole instance of the object.
* @static
* @param Optional prototype of custom lookup table to overload with.
*/
static function instance($prototype = false)
{
// no references, since PHP doesn't copy unless modified
static $instance = null;
if ($prototype) {
$instance = $prototype;
} elseif (!$instance) {
$instance = new HTMLPurifier_EntityLookup();
$instance->setup();
}
return $instance;
}
/**
* Callback function for substituteNonSpecialEntities() that does the work.
*
* @warning Though this is public in order to let the callback happen,
* calling it directly is not recommended.
* @param $matches PCRE matches array, with 0 the entire match, and
* either index 1, 2 or 3 set with a hex value, dec value,
* or string (respectively).
* @returns Replacement string.
*/
function nonSpecialEntityCallback($matches)
{
// replaces all but big five
$entity = $matches[0];
$is_num = @$matches[0][1] === '#';
if ($is_num) {
$is_hex = @$entity[2] === 'x';
$code = $is_hex ? hexdec($matches[1]) : (int) $matches[2];
// abort for special characters
if (isset($this->_special_dec2str[$code])) {
return $entity;
}
return HTMLPurifier_Encoder::unichr($code);
} else {
if (isset($this->_special_ent2dec[$matches[3]])) {
return $entity;
}
if (!$this->_entity_lookup) {
$this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
}
if (isset($this->_entity_lookup->table[$matches[3]])) {
return $this->_entity_lookup->table[$matches[3]];
} else {
return $entity;
}
}
}
public function test()
{
$lookup = HTMLPurifier_EntityLookup::instance();
// latin char
$this->assertIdentical('â', $lookup->table['acirc']);
// special char
$this->assertIdentical('"', $lookup->table['quot']);
$this->assertIdentical('“', $lookup->table['ldquo']);
$this->assertIdentical('<', $lookup->table['lt']);
// expressed strangely in source file
// symbol char
$this->assertIdentical('θ', $lookup->table['theta']);
}
public function __construct()
{
parent::__construct();
$this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
}
public function setUp()
{
$this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
parent::setUp();
}
public function setUp()
{
$this->EntityParser = new HTMLPurifier_EntityParser();
$this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
}