friendica/library/HTML5/Data.php
2010-07-01 16:48:07 -07:00

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PHP
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This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?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;
}
}