public function testLookupDecimal()
{
$this->assertEquals('&', CharacterReference::lookupDecimal(38));
$this->assertEquals('&', CharacterReference::lookupDecimal('38'));
$this->assertEquals('<', CharacterReference::lookupDecimal(60));
$this->assertEquals('Σ', CharacterReference::lookupDecimal(931));
$this->assertEquals('Σ', CharacterReference::lookupDecimal('0931'));
}
/**
* Decode a character reference and return the string.
*
* Returns false if the entity could not be found. If $inAttribute is set
* to true, a bare & will be returned as-is.
*
* @param boolean $inAttribute
* Set to true if the text is inside of an attribute value.
* false otherwise.
*/
protected function decodeCharacterReference($inAttribute = false)
{
// If it fails this, it's definitely not an entity.
if ($this->scanner->current() != '&') {
return false;
}
// Next char after &.
$tok = $this->scanner->next();
$entity = '';
$start = $this->scanner->position();
if ($tok == false) {
return '&';
}
// These indicate not an entity. We return just
// the &.
if (strspn($tok, static::WHITE . "&<") == 1) {
// $this->scanner->next();
return '&';
}
// Numeric entity
if ($tok == '#') {
$tok = $this->scanner->next();
// Hexidecimal encoding.
// X[0-9a-fA-F]+;
// x[0-9a-fA-F]+;
if ($tok == 'x' || $tok == 'X') {
$tok = $this->scanner->next();
// Consume x
// Convert from hex code to char.
$hex = $this->scanner->getHex();
if (empty($hex)) {
$this->parseError("Expected &#xHEX;, got &#x%s", $tok);
// We unconsume because we don't know what parser rules might
// be in effect for the remaining chars. For example. '&#>'
// might result in a specific parsing rule inside of tag
// contexts, while not inside of pcdata context.
$this->scanner->unconsume(2);
return '&';
}
$entity = CharacterReference::lookupHex($hex);
} else {
// Convert from decimal to char.
$numeric = $this->scanner->getNumeric();
if ($numeric === false) {
$this->parseError("Expected &#DIGITS;, got &#%s", $tok);
$this->scanner->unconsume(2);
return '&';
}
$entity = CharacterReference::lookupDecimal($numeric);
}
} else {
// Attempt to consume a string up to a ';'.
// [a-zA-Z0-9]+;
$cname = $this->scanner->getAsciiAlpha();
$entity = CharacterReference::lookupName($cname);
// When no entity is found provide the name of the unmatched string
// and continue on as the & is not part of an entity. The & will
// be converted to & elsewhere.
if ($entity == null) {
$this->parseError("No match in entity table for '%s'", $cname);
$this->scanner->unconsume($this->scanner->position() - $start);
return '&';
}
}
// The scanner has advanced the cursor for us.
$tok = $this->scanner->current();
// We have an entity. We're done here.
if ($tok == ';') {
$this->scanner->next();
return $entity;
}
// If in an attribute, then failing to match ; means unconsume the
// entire string. Otherwise, failure to match is an error.
if ($inAttribute) {
$this->scanner->unconsume($this->scanner->position() - $start);
return '&';
}
$this->parseError("Expected &ENTITY;, got &ENTITY%s (no trailing ;) ", $tok);
return '&' . $entity;
}