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<?php
// warning: this file is encoded in UTF-8!
class HTML5_Data
{
// at some point this should be moved to a .ser file. Another
// possible optimization is to give UTF-8 bytes, not Unicode
// codepoints
protected static $realCodepointTable = array(
0x0D => 0x000A, // LINE FEED (LF)
0x80 => 0x20AC, // EURO SIGN ('€')
0x81 => 0xFFFD, // REPLACEMENT CHARACTER
0x82 => 0x201A, // SINGLE LOW-9 QUOTATION MARK ('‚')
0x83 => 0x0192, // LATIN SMALL LETTER F WITH HOOK ('ƒ')
0x84 => 0x201E, // DOUBLE LOW-9 QUOTATION MARK ('„')
0x85 => 0x2026, // HORIZONTAL ELLIPSIS ('…')
0x86 => 0x2020, // DAGGER ('†')
0x87 => 0x2021, // DOUBLE DAGGER ('‡')
0x88 => 0x02C6, // MODIFIER LETTER CIRCUMFLEX ACCENT ('ˆ')
0x89 => 0x2030, // PER MILLE SIGN ('‰')
0x8A => 0x0160, // LATIN CAPITAL LETTER S WITH CARON ('Š')
0x8B => 0x2039, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK ('‹')
0x8C => 0x0152, // LATIN CAPITAL LIGATURE OE ('Œ')
0x8D => 0xFFFD, // REPLACEMENT CHARACTER
0x8E => 0x017D, // LATIN CAPITAL LETTER Z WITH CARON ('Ž')
0x8F => 0xFFFD, // REPLACEMENT CHARACTER
0x90 => 0xFFFD, // REPLACEMENT CHARACTER
0x91 => 0x2018, // LEFT SINGLE QUOTATION MARK ('‘')
0x92 => 0x2019, // RIGHT SINGLE QUOTATION MARK ('’')
0x93 => 0x201C, // LEFT DOUBLE QUOTATION MARK ('“')
0x94 => 0x201D, // RIGHT DOUBLE QUOTATION MARK ('”')
0x95 => 0x2022, // BULLET ('•')
0x96 => 0x2013, // EN DASH ('–')
0x97 => 0x2014, // EM DASH ('—')
0x98 => 0x02DC, // SMALL TILDE ('˜')
0x99 => 0x2122, // TRADE MARK SIGN ('™')
0x9A => 0x0161, // LATIN SMALL LETTER S WITH CARON ('š')
0x9B => 0x203A, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK ('›')
0x9C => 0x0153, // LATIN SMALL LIGATURE OE ('œ')
0x9D => 0xFFFD, // REPLACEMENT CHARACTER
0x9E => 0x017E, // LATIN SMALL LETTER Z WITH CARON ('ž')
0x9F => 0x0178, // LATIN CAPITAL LETTER Y WITH DIAERESIS ('Ÿ')
);
protected static $namedCharacterReferences;
protected static $namedCharacterReferenceMaxLength;
/**
* Returns the "real" Unicode codepoint of a malformed character
* reference.
*/
public static function getRealCodepoint($ref) {
if (!isset(self::$realCodepointTable[$ref])) return false;
else return self::$realCodepointTable[$ref];
}
public static function getNamedCharacterReferences() {
if (!self::$namedCharacterReferences) {
self::$namedCharacterReferences = unserialize(
file_get_contents(dirname(__FILE__) . '/named-character-references.ser'));
}
return self::$namedCharacterReferences;
}
public static function getNamedCharacterReferenceMaxLength() {
if (!self::$namedCharacterReferenceMaxLength) {
$namedCharacterReferences = self::getNamedCharacterReferences();
$lengths = array_map('strlen', array_keys($namedCharacterReferences));
self::$namedCharacterReferenceMaxLength = max($lengths);
}
return self::$namedCharacterReferenceMaxLength;
}
/**
* Converts a Unicode codepoint to sequence of UTF-8 bytes.
* @note Shamelessly stolen from HTML Purifier, which is also
* shamelessly stolen from Feyd (which is in public domain).
*/
public static function utf8chr($code) {
if($code > 0x10FFFF or $code < 0x0 or
($code >= 0xD800 and $code <= 0xDFFF) ) {
// bits are set outside the "valid" range as defined
// by UNICODE 4.1.0
return "\xEF\xBF\xBD";
}
$x = $y = $z = $w = 0;
if ($code < 0x80) {
// regular ASCII character
$x = $code;
} else {
// set up bits for UTF-8
$x = ($code & 0x3F) | 0x80;
if ($code < 0x800) {
$y = (($code & 0x7FF) >> 6) | 0xC0;
} else {
$y = (($code & 0xFC0) >> 6) | 0x80;
if($code < 0x10000) {
$z = (($code >> 12) & 0x0F) | 0xE0;
} else {
$z = (($code >> 12) & 0x3F) | 0x80;
$w = (($code >> 18) & 0x07) | 0xF0;
}
}
}
// set up the actual character
$ret = '';
if($w) $ret .= chr($w);
if($z) $ret .= chr($z);
if($y) $ret .= chr($y);
$ret .= chr($x);
return $ret;
}
}
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