/home/edulekha/studygroup.edulekha.com/ow_libraries/jevix/jevix.class.php
<?php
class Jevix
{
const PRINTABLE = 0x1;
const ALPHA = 0x2;
const LAT = 0x4;
const RUS = 0x8;
const NUMERIC = 0x10;
const SPACE = 0x20;
const NAME = 0x40;
const URL = 0x100;
const NOPRINT = 0x200;
const PUNCTUATUON = 0x400;
const HTML_QUOTE = 0x2000;
const TAG_QUOTE = 0x4000;
const QUOTE_CLOSE = 0x8000;
const NL = 0x10000;
const QUOTE_OPEN = 0;
const STATE_TEXT = 0;
const STATE_TAG_PARAMS = 1;
const STATE_TAG_PARAM_VALUE = 2;
const STATE_INSIDE_TAG = 3;
const STATE_INSIDE_NOTEXT_TAG = 4;
const STATE_INSIDE_PREFORMATTED_TAG = 5;
public $blackListMode = false;
public $commonTagParamRules = array();
public $tagsRules = array();
public $entities1 = array();
public $entities2 = array();
public $dash = " — ";
public $apostrof = "’";
public $dotes = "…";
public $nl = "\r\n";
public $mediaSrcValidate = false;
public $mediaValidSrc = array();
public $forceShortTags = array('br', 'img', 'input', 'hr', 'link');
protected $text;
protected $textBuf;
protected $textLen = 0;
protected $curPos;
protected $curCh;
protected $curChOrd;
protected $curChClass;
protected $curParentTag;
protected $states;
protected $quotesOpened = 0;
protected $brAdded = 0;
protected $state;
protected $tagsStack;
protected $openedTag;
protected $isXHTMLMode = false;
protected $noTypoMode = true;
public $isAutoLinkMode = false;
public $outBuffer = '';
public $errors;
const TR_TAG_LIST = 1;
const TR_PARAM_ALLOWED = 2;
const TR_PARAM_REQUIRED = 3;
const TR_TAG_SHORT = 4;
const TR_TAG_CUT = 5;
const TR_TAG_CHILD = 6;
const TR_TAG_CONTAINER = 7;
const TR_TAG_CHILD_TAGS = 8;
const TR_TAG_PARENT = 9;
const TR_TAG_PREFORMATTED = 10;
const TR_PARAM_AUTO_ADD = 11;
const TR_TAG_NO_TYPOGRAPHY = 12;
const TR_TAG_IS_EMPTY = 13;
const TR_TAG_NO_AUTO_BR = 14;
protected $chClasses = array(0 => 512, 1 => 512, 2 => 512, 3 => 512, 4 => 512, 5 => 512, 6 => 512, 7 => 512, 8 => 512, 9 => 32, 10 => 66048, 11 => 512, 12 => 512, 13 => 66048, 14 => 512, 15 => 512, 16 => 512, 17 => 512, 18 => 512, 19 => 512, 20 => 512, 21 => 512, 22 => 512, 23 => 512, 24 => 512, 25 => 512, 26 => 512, 27 => 512, 28 => 512, 29 => 512, 30 => 512, 31 => 512, 32 => 32, 97 => 71, 98 => 71, 99 => 71, 100 => 71, 101 => 71, 102 => 71, 103 => 71, 104 => 71, 105 => 71, 106 => 71, 107 => 71, 108 => 71, 109 => 71, 110 => 71, 111 => 71, 112 => 71, 113 => 71, 114 => 71, 115 => 71, 116 => 71, 117 => 71, 118 => 71, 119 => 71, 120 => 71, 121 => 71, 122 => 71, 65 => 71, 66 => 71, 67 => 71, 68 => 71, 69 => 71, 70 => 71, 71 => 71, 72 => 71, 73 => 71, 74 => 71, 75 => 71, 76 => 71, 77 => 71, 78 => 71, 79 => 71, 80 => 71, 81 => 71, 82 => 71, 83 => 71, 84 => 71, 85 => 71, 86 => 71, 87 => 71, 88 => 71, 89 => 71, 90 => 71, 1072 => 11, 1073 => 11, 1074 => 11, 1075 => 11, 1076 => 11, 1077 => 11, 1078 => 11, 1079 => 11, 1080 => 11, 1081 => 11, 1082 => 11, 1083 => 11, 1084 => 11, 1085 => 11, 1086 => 11, 1087 => 11, 1088 => 11, 1089 => 11, 1090 => 11, 1091 => 11, 1092 => 11, 1093 => 11, 1094 => 11, 1095 => 11, 1096 => 11, 1097 => 11, 1098 => 11, 1099 => 11, 1100 => 11, 1101 => 11, 1102 => 11, 1103 => 11, 1040 => 11, 1041 => 11, 1042 => 11, 1043 => 11, 1044 => 11, 1045 => 11, 1046 => 11, 1047 => 11, 1048 => 11, 1049 => 11, 1050 => 11, 1051 => 11, 1052 => 11, 1053 => 11, 1054 => 11, 1055 => 11, 1056 => 11, 1057 => 11, 1058 => 11, 1059 => 11, 1060 => 11, 1061 => 11, 1062 => 11, 1063 => 11, 1064 => 11, 1065 => 11, 1066 => 11, 1067 => 11, 1068 => 11, 1069 => 11, 1070 => 11, 1071 => 11, 48 => 337, 49 => 337, 50 => 337, 51 => 337, 52 => 337, 53 => 337, 54 => 337, 55 => 337, 56 => 337, 57 => 337, 34 => 57345, 39 => 16385, 46 => 1281, 44 => 1025, 33 => 1025, 63 => 1281, 58 => 1025, 59 => 1281, 1105 => 11, 1025 => 11, 47 => 257, 38 => 257, 37 => 257, 45 => 257, 95 => 257, 61 => 257, 43 => 257, 35 => 257, 124 => 257,);
protected function &strToArray( $str )
{
$chars = null;
preg_match_all('/./su', $str, $chars);
return $chars[0];
}
function parse( $text )
{
$this->curPos = -1;
$this->curCh = null;
$this->curChOrd = 0;
$this->state = self::STATE_TEXT;
$this->states = array();
$this->quotesOpened = 0;
$this->noTypoMode = false;
$this->text = $text;
$this->textBuf = $this->strToArray($this->text);
$this->textLen = count($this->textBuf);
$this->getCh();
$content = '';
$this->outBuffer = '';
$this->brAdded = 0;
$this->tagsStack = array();
$this->openedTag = null;
$this->errors = array();
$this->skipSpaces();
$this->anyThing($content);
if ( mb_strstr($content, '<!--') && (mb_substr_count($content, '<!--') > mb_substr_count($content, '-->')) )
{
$content .= '-->';
}
return $content;
}
protected function getCh()
{
return $this->goToPosition($this->curPos + 1);
}
protected function goToPosition( $position )
{
$this->curPos = $position;
if ( $this->curPos < $this->textLen )
{
$this->curCh = $this->textBuf[$this->curPos];
$this->curChOrd = uniord($this->curCh);
$this->curChClass = $this->getCharClass($this->curChOrd);
}
else
{
$this->curCh = null;
$this->curChOrd = 0;
$this->curChClass = 0;
}
return $this->curCh;
}
protected function saveState()
{
$state = array(
'pos' => $this->curPos,
'ch' => $this->curCh,
'ord' => $this->curChOrd,
'class' => $this->curChClass,
);
$this->states[] = $state;
return count($this->states) - 1;
}
protected function restoreState( $index = null )
{
if ( !count($this->states) )
{
throw new Exception('The end of stack');
}
if ( $index == null )
{
$state = array_pop($this->states);
}
else
{
if ( !isset($this->states[$index]) )
{
throw new Exception('Invalid stack index');
}
$state = $this->states[$index];
$this->states = array_slice($this->states, 0, $index);
}
$this->curPos = $state['pos'];
$this->curCh = $state['ch'];
$this->curChOrd = $state['ord'];
$this->curChClass = $state['class'];
}
protected function matchCh( $ch, $skipSpaces = false )
{
if ( $this->curCh == $ch )
{
$this->getCh();
if ( $skipSpaces )
{
$this->skipSpaces();
}
return true;
}
return false;
}
protected function matchChClass( $chClass, $skipSpaces = false )
{
if ( ($this->curChClass & $chClass) == $chClass )
{
$ch = $this->curCh;
$this->getCh();
if ( $skipSpaces )
{
$this->skipSpaces();
}
return $ch;
}
return false;
}
protected function matchStr( $str, $skipSpaces = false )
{
$this->saveState();
$len = mb_strlen($str, 'UTF-8');
$test = '';
while ( $len-- && $this->curChClass )
{
$test.=$this->curCh;
$this->getCh();
}
if ( $test == $str )
{
if ( $skipSpaces )
{
$this->skipSpaces();
}
return true;
}
else
{
$this->restoreState();
return false;
}
}
protected function skipUntilCh( $ch )
{
$chPos = mb_strpos($this->text, $ch, $this->curPos, 'UTF-8');
if ( $chPos )
{
return $this->goToPosition($chPos);
}
else
{
return false;
}
}
protected function skipUntilStr( $str )
{
$str = $this->strToArray($str);
$firstCh = $str[0];
$len = count($str);
while ( $this->curChClass )
{
if ( $this->curCh == $firstCh )
{
$this->saveState();
$this->getCh();
$strOK = true;
for ( $i = 1; $i < $len; $i++ )
{
if ( !$this->curChClass )
{
return false;
}
if ( $this->curCh != $str[$i] )
{
$strOK = false;
break;
}
$this->getCh();
}
if ( !$strOK )
{
$this->restoreState();
}
else
{
return true;
}
}
$this->getCh();
}
return false;
}
protected function getCharClass( $ord )
{
return isset($this->chClasses[$ord]) ? $this->chClasses[$ord] : self::PRINTABLE;
}
protected function skipSpaces( &$count = 0 )
{
while ( $this->curChClass == self::SPACE )
{
$this->getCh();
$count++;
}
return $count > 0;
}
protected function name( &$name = '', $minus = false )
{
$this->skipNL();
if ( ($this->curChClass & self::LAT) == self::LAT )
{
$name.=$this->curCh;
$this->getCh();
}
else
{
return false;
}
while ( (($this->curChClass & self::NAME) == self::NAME || ($minus && $this->curCh && !in_array($this->curCh, array(' ', '=', '>')) ) ) )
{
$name.=$this->curCh;
$this->getCh();
}
$this->skipSpaces();
return true;
}
protected function tag( &$tag, &$params, &$content, &$short )
{
$this->saveState();
$params = array();
$tag = '';
$closeTag = '';
$params = array();
$short = false;
if ( !$this->tagOpen($tag, $params, $short) )
{
return false;
}
if ( $short )
{
return true;
}
$oldState = $this->state;
$oldNoTypoMode = $this->noTypoMode;
if ( !empty($this->tagsRules[$tag][self::TR_TAG_PREFORMATTED]) )
{
$this->state = self::STATE_INSIDE_PREFORMATTED_TAG;
}
elseif ( !empty($this->tagsRules[$tag][self::TR_TAG_CONTAINER]) )
{
$this->state = self::STATE_INSIDE_NOTEXT_TAG;
}
elseif ( !empty($this->tagsRules[$tag][self::TR_TAG_NO_TYPOGRAPHY]) )
{
$this->noTypoMode = true;
$this->state = self::STATE_INSIDE_TAG;
}
else
{
$this->state = self::STATE_INSIDE_TAG;
}
array_push($this->tagsStack, $tag);
$this->openedTag = $tag;
$content = '';
if ( $this->state == self::STATE_INSIDE_PREFORMATTED_TAG )
{
$this->preformatted($content, $tag);
}
else
{
$this->anyThing($content, $tag);
}
array_pop($this->tagsStack);
$this->openedTag = !empty($this->tagsStack) ? array_pop($this->tagsStack) : null;
$isTagClose = $this->tagClose($closeTag);
if ( $isTagClose && ($tag != $closeTag) )
{
$this->error("Invalid tag close $closeTag. > expected $tag");
}
$this->state = $oldState;
$this->noTypoMode = $oldNoTypoMode;
return true;
}
protected function preformatted( &$content = '', $insideTag = null )
{
while ( $this->curChClass )
{
if ( $this->curCh == '<' )
{
$tag = '';
$this->saveState();
$isClosedTag = $this->tagClose($tag);
if ( $isClosedTag )
{
$this->restoreState();
}
if ( $isClosedTag && $tag == $insideTag )
{
return;
}
}
$content.= isset($this->entities2[$this->curCh]) ? $this->entities2[$this->curCh] : $this->curCh;
$this->getCh();
}
}
protected function tagOpen( &$name, &$params, &$short = false )
{
$restore = $this->saveState();
if ( !$this->matchCh('<') )
{
return false;
}
$this->skipSpaces();
if ( !$this->name($name) )
{
$this->restoreState();
return false;
}
$name = mb_strtolower($name, 'UTF-8');
if ( $this->curCh != '>' && $this->curCh != '/' )
{
$this->tagParams($params);
}
$short = ( /* $this->curCh == '/' && */ in_array($name, $this->forceShortTags) && !empty($this->tagsRules[$name][self::TR_TAG_SHORT]) );
$slash = $this->matchCh('/');
if ( !$short && $slash && empty($this->tagsRules[$name][self::TR_TAG_SHORT]) )
{
$this->restoreState();
return false;
}
if ( $slash )
{
$short = true;
}
$this->skipSpaces();
if ( !$this->matchCh('>') )
{
$this->restoreState($restore);
return false;
}
$this->skipSpaces();
return true;
}
protected function tagParams( &$params = array() )
{
$name = null;
$value = null;
while ( $this->tagParam($name, $value) )
{
$params[$name] = $value;
$name = '';
$value = '';
}
return count($params) > 0;
}
protected function tagParam( &$name, &$value )
{
$this->saveState();
if ( !$this->name($name, true) )
{
return false;
}
if ( !$this->matchCh('=', true) )
{
if ( ($this->curCh == '>' || ($this->curChClass & self::LAT) == self::LAT ) )
{
$value = $name;
return true;
}
else
{
$this->restoreState();
return false;
}
}
$quote = $this->matchChClass(self::TAG_QUOTE, true);
if ( !$this->tagParamValue($value, $quote) )
{
$this->restoreState();
return false;
}
if ( $quote && !$this->matchCh($quote, true) )
{
$this->restoreState();
return false;
}
$this->skipSpaces();
return true;
}
protected function tagParamValue( &$value, $quote )
{
if ( $quote !== false )
{
$escape = false;
while ( $this->curChClass && ($this->curCh != $quote || $escape) )
{
$escape = false;
$value.=isset($this->entities1[$this->curCh]) ? $this->entities1[$this->curCh] : $this->curCh;
if ( $this->curCh == '\\' )
{
$escape = true;
}
$this->getCh();
}
}
else
{
while ( $this->curChClass && !($this->curChClass & self::SPACE) && $this->curCh != '>' )
{
$value.=isset($this->entities1[$this->curCh]) ? $this->entities1[$this->curCh] : $this->curCh;
$this->getCh();
}
}
return true;
}
protected function tagClose( &$name )
{
$this->saveState();
if ( !$this->matchCh('<') )
{
return false;
}
$this->skipSpaces();
if ( !$this->matchCh('/') )
{
$this->restoreState();
return false;
}
$this->skipSpaces();
if ( !$this->name($name) )
{
$this->restoreState();
return false;
}
$name = mb_strtolower($name, 'UTF-8');
$this->skipSpaces();
if ( !$this->matchCh('>') )
{
$this->restoreState();
return false;
}
return true;
}
protected function makeTag( $tag, $params, $content, $short, $parentTag = null )
{
$this->curParentTag = $parentTag;
$tag = mb_strtolower($tag, 'UTF-8');
$tagRules = isset($this->tagsRules[$tag]) ? $this->tagsRules[$tag] : null;
$parentTagIsContainer = $parentTag && isset($this->tagsRules[$parentTag][self::TR_TAG_CONTAINER]);
if ( ( $this->blackListMode && !empty($tagRules[self::TR_TAG_LIST]) ) || (!$this->blackListMode && empty($tagRules[self::TR_TAG_LIST]) ) )
{
return !empty($this->tagsRules[$tag][self::TR_TAG_CUT]) ? '' : $content;
}
if ( (!$this->blackListMode && !$tagRules ) || (!$this->blackListMode && empty($tagRules[self::TR_TAG_LIST])) || ( $this->blackListMode && !empty($tagRules[self::TR_TAG_LIST]) ) )
{
return $parentTagIsContainer ? '' : $content;
}
// hardcoded black list
if ( in_array($tag, array('meta', 'title', 'html', 'body', 'head')) )
{
return '';
}
// params processing
$resParams = array();
foreach ( $params as $param => $value )
{
$param = mb_strtolower($param, 'UTF-8');
$value = trim($value);
// custom iframe processing
if ( $this->mediaSrcValidate && in_array($tag, array('iframe', 'object', 'embed', 'param')) && in_array($param, array('src')) )
{
$val = $value;
if ( mb_substr($val, 0, 2) == '//' )
{
$val = 'http:' . $val;
}
$urlArr = parse_url($val);
$parts = explode('.', $urlArr['host']);
if ( count($parts) < 2 )
{
return '';
}
$d1 = array_pop($parts);
$d2 = array_pop($parts);
$host = $d2 . '.' . $d1;
if ( !in_array($host, $this->mediaValidSrc) && !in_array($urlArr['host'], $this->mediaValidSrc) )
{
return '';
}
}
// if value is empty ignore param
// if ( empty($value) )
// {
// continue;
// }
if ( $this->blackListMode )
{
if ( in_array('*', $this->commonTagParamRules) || !empty($tagRules[self::TR_PARAM_ALLOWED]['*']) || isset($tagRules[self::TR_PARAM_ALLOWED][$param]) || in_array($param, $this->commonTagParamRules) )
{
continue;
}
}
else
{
if ( !in_array('*', $this->commonTagParamRules) && empty($tagRules[self::TR_PARAM_ALLOWED]['*']) && !isset($tagRules[self::TR_PARAM_ALLOWED][$param]) && !in_array($param, $this->commonTagParamRules) )
{
continue;
}
}
$resParams[$param] = $value;
}
$text = '<' . $tag;
foreach ( $resParams as $param => $value )
{
$text.=' ' . $param . '="' . $value . '"';
}
$text.= $short ? ' />' : '>';
if ( isset($tagRules[self::TR_TAG_CONTAINER]) )
{
$text .= "\r\n";
}
if ( !$short )
{
$text.= $content . '</' . $tag . '>';
}
if ( $parentTagIsContainer )
{
$text .= "\r\n";
}
if ( $tag == 'br' )
{
$text.="\r\n";
}
return $text;
}
protected function comment()
{
return false;
if ( !$this->matchStr('<!--') )
{
return false;
}
return $this->skipUntilStr('-->');
}
protected function anyThing( &$content = '', $parentTag = null )
{
$this->skipNL();
while ( $this->curChClass )
{
$tag = '';
$params = null;
$text = null;
$shortTag = false;
$name = null;
if ( $this->state == self::STATE_INSIDE_NOTEXT_TAG && $this->curCh != '<' )
{
$this->skipUntilCh('<');
}
if ( $this->curCh == '<' && $this->tag($tag, $params, $text, $shortTag) )
{
$tagText = $this->makeTag($tag, $params, $text, $shortTag, $parentTag);
$content.=$tagText;
if ( $tag == 'br' )
{
$this->skipNL();
}
elseif ( empty($tagText) )
{
$this->skipSpaces();
}
}
elseif ( $this->curCh == '<' && $this->comment() )
{
continue;
}
elseif ( $this->curCh == '<' )
{
$this->saveState();
if ( $this->tagClose($name) )
{
if ( $this->state == self::STATE_INSIDE_TAG || $this->state == self::STATE_INSIDE_NOTEXT_TAG )
{
$this->restoreState();
return false;
}
else
{
$this->error('Unexpectedly closed tag `>` ' . $name);
}
}
else
{
if ( $this->state != self::STATE_INSIDE_NOTEXT_TAG )
{
$content.= '<'; //$this->entities2['<'];
}
$this->getCh();
}
}
elseif ( $this->text($text) )
{
$content.=$text;
}
}
// $content = str_replace(array('<!--', '-->'), array('##lc##', '##lc##'), $content);
// $content = str_replace(array('<', '>'), array('<', '>'), $content);
// $content = str_replace(array('##lc##', '##lc##'), array('<!--', '-->'), $content);
return true;
}
protected function skipNL( &$count = 0 )
{
if ( !($this->curChClass & self::NL) )
{
return false;
}
$count++;
$firstNL = $this->curCh;
$nl = $this->getCh();
while ( $this->curChClass & self::NL )
{
if ( $nl == $firstNL )
{
$count++;
}
$nl = $this->getCh();
$this->skipSpaces();
}
return true;
}
protected function text( &$text )
{
$text = '';
$dash = '';
$newLine = true;
$newWord = true;
$url = null;
$href = null;
while ( ($this->curCh != '<') && $this->curChClass )
{
$brCount = 0;
$spCount = 0;
$quote = null;
$closed = false;
$punctuation = null;
$entity = null;
$this->skipSpaces($spCount);
if ( $spCount > 0 )
{
$text.=' ';
$newWord = true;
}
elseif ( $this->skipNL($brCount) )
{
if ( $this->curParentTag && isset($this->tagsRules[$this->curParentTag]) && isset($this->tagsRules[$this->curParentTag][self::TR_TAG_NO_AUTO_BR]) && (is_null($this->openedTag) or isset($this->tagsRules[$this->openedTag][self::TR_TAG_NO_AUTO_BR]))
)
{
}
else
{
$text.= str_repeat("\r\n", $brCount);
}
$newLine = true;
$newWord = true;
}
elseif ( $this->isAutoLinkMode && ($this->curChClass & self::LAT) && $this->openedTag != 'a' && $this->url($url, $href) )
{
$linkLabel = $url;
if ( strlen($linkLabel) > 60 )
{
$arr = parse_url($linkLabel);
$domain = (!empty($arr['scheme']) ? $arr['scheme'] . '://' : '' ) . (!empty($arr['host']) ? $arr['host'] : '' ) . (!empty($arr['port']) ? ':' . $arr['port'] : '' ) . '/';
$qs = (!empty($arr['path']) ? $arr['path'] : '' ) . (!empty($arr['query']) ? '?' . $arr['query'] : '' );
if ( strlen($qs) > 23 )
{
$qs = '...' . substr($qs, -20);
}
$linkLabel = $domain . $qs;
}
$text.= $this->makeTag('a', array('href' => $href, 'class' => 'ow_autolink', 'target' => '_blank', 'rel' => 'nofollow'), $linkLabel, false);
$newWord = true;
}
elseif ( $this->curChClass & self::PRINTABLE )
{
$text.=isset($this->entities2[$this->curCh]) ? $this->entities2[$this->curCh] : $this->curCh;
$this->getCh();
$newWord = false;
$newLine = false;
}
else
{
$this->getCh();
}
}
$this->skipSpaces();
return $text != '';
}
// fake function to optimize url function
private function simpleMatchString( $string )
{
$count = mb_strlen($string);
for ( $i = 0; $i < $count; $i++ )
{
if ( !isset($this->textBuf[$this->curPos + $i]) || $this->textBuf[$this->curPos + $i] !== mb_substr($string, $i, 1) )
{
return false;
}
}
return true;
}
protected function url( &$url, &$href )
{
$hrefPrefix = null;
if ( !empty($this->curPos) && $this->getCharClass(uniord($this->textBuf[$this->curPos - 1])) === self::PRINTABLE )
{
return false;
}
if ( $this->curCh === 'h' )
{
if ( $this->simpleMatchString('http://') )
{
$hrefPrefix = 'http://';
$this->goToPosition($this->curPos + 7);
}
else if ( $this->simpleMatchString('https://') )
{
$hrefPrefix = 'https://';
$this->goToPosition($this->curPos + 8);
}
}
else if ( $this->curCh === 'w' )
{
if ( $this->simpleMatchString('www.') )
{
$hrefPrefix = 'http://www.';
$urlPrefix = 'www.';
$this->goToPosition($this->curPos + 4);
}
}
if ( $hrefPrefix === null )
{
return false;
}
$this->saveState();
$url = '';
$urlChMask = self::URL | self::ALPHA;
$urlPunctValidChars = array(":", ",", "!", "'", "~", ".", ";");
while ( $this->curChClass & $urlChMask || in_array($this->curCh, $urlPunctValidChars) )
{
$url.= $this->curCh;
$this->getCh();
}
$chCount = 0;
for( $i = (mb_strlen($url) - 1); $i >= 0; $i-- )
{
if( in_array(mb_substr($url, $i, 1), $urlPunctValidChars) )
{
$chCount++;
}
else
{
break;
}
}
if( $chCount > 0 )
{
$url = mb_substr($url, 0, mb_strlen($url) - $chCount);
$this->goToPosition($this->curPos-$chCount);
}
if( mb_strlen($url) == 0 )
{
return false;
}
if ( !mb_strlen($url) )
{
$this->restoreState();
return false;
}
$href = $hrefPrefix . $url;
$url = !empty($urlPrefix) ? $urlPrefix . $url : $href;
return true;
}
protected function error( $message )
{
$str = '';
$strEnd = min($this->curPos + 8, $this->textLen);
for ( $i = $this->curPos; $i < $strEnd; $i++ )
{
$str.=$this->textBuf[$i];
}
$this->errors[] = array(
'message' => $message,
'pos' => $this->curPos,
'ch' => $this->curCh,
'line' => 0,
'str' => $str,
);
}
}
function uniord( $c )
{
$h = ord($c{0});
if ( $h <= 0x7F )
{
return $h;
}
else if ( $h < 0xC2 )
{
return false;
}
else if ( $h <= 0xDF )
{
return ($h & 0x1F) << 6 | (ord($c{1}) & 0x3F);
}
else if ( $h <= 0xEF )
{
return ($h & 0x0F) << 12 | (ord($c{1}) & 0x3F) << 6 | (ord($c{2}) & 0x3F);
}
else if ( $h <= 0xF4 )
{
return ($h & 0x0F) << 18 | (ord($c{1}) & 0x3F) << 12 | (ord($c{2}) & 0x3F) << 6 | (ord($c{3}) & 0x3F);
}
else
{
return false;
}
}