/* private */ function Tokenizer()
{
+ global $wgLang;
+
$this->mPos=0;
$this->mTokenQueue=array();
+ $this->linkPrefixExtension = $wgLang->linkPrefixExtension();
}
# factory function
function newFromString( $s )
{
+ $fname = "Tokenizer::newFromString";
+ wfProfileIn( $fname );
+
$t = new Tokenizer();
$t->mText = $s;
$t->mTextLength = strlen( $s );
- // echo "New tokenizer generated. <pre>{$s}</pre>\n";
+
+ wfProfileOut( $fname );
return $t;
}
// the stored token.
function previewToken()
{
+ $fname = "Tokenizer::previewToken";
+ wfProfileIn( $fname );
+
if ( count( $this->mQueuedToken ) != 0 ) {
// still one token from the last round around. Return that one first.
$token = $this->mQueuedToken[0];
$token = $this->nextToken();
array_unshift( $this->mQueuedToken, $token );
}
+
+ wfProfileOut( $fname );
return $token;
}
// proceeds character by character through the text, looking for characters needing
// special attention. Those are currently: I, R, ', [, ], newline
//
- // TODO: prefixed links for Arabic wikipedia not implemented yet
- // handling of French blanks not yet implemented
+ // TODO: handling of French blanks not yet implemented
function nextToken()
{
+ $fname = "Tokenizer::nextToken";
+ wfProfileIn( $fname );
+
if ( count( $this->mQueuedToken ) != 0 ) {
// still one token from the last round around. Return that one first.
$token = array_shift( $this->mQueuedToken );
+ } else if ( $this->mPos > $this->mTextLength ) {
+ // If no text is left, return "false".
+ $token = false;
} else {
$token["text"]="";
$token["type"]="text";
- // If no text is left, return "false".
- if ( $this->mPos > $this->mTextLength )
- return false;
-
while ( $this->mPos <= $this->mTextLength ) {
switch ( @$ch = $this->mText[$this->mPos] ) {
case 'R': // for "RFC "
- if ( $this->mText[$this->mPos+1] == 'F' &&
- $this->mText[$this->mPos+2] == 'C' &&
- $this->mText[$this->mPos+4] == ' ' ) {
+ if ( $this->continues("FC ") ) {
$queueToken["type"] = $queueToken["text"] = "RFC ";
$this->mQueuedToken[] = $queueToken;
$this->mPos += 3;
}
break;
case 'I': // for "ISBN "
- if ( $this->mText[$this->mPos+1] == 'S' &&
- $this->mText[$this->mPos+2] == 'B' &&
- $this->mText[$this->mPos+3] == 'N' &&
- $this->mText[$this->mPos+4] == ' ' ) {
+ if ( $this->continues("SBN ") ) {
$queueToken["type"] = $queueToken["text"] = "ISBN ";
$this->mQueuedToken[] = $queueToken;
$this->mPos += 4;
}
break;
case "[": // for links "[["
- if ( $this->mText[$this->mPos+1] == "[" &&
- $this->mText[$this->mPos+2] == "[" ) {
+ if ( $this->continues("[[") ) {
$queueToken["type"] = "[[[";
$queueToken["text"] = "";
$this->mQueuedToken[] = $queueToken;
$this->mPos += 3;
break 2; // switch + while
- } else if ( $this->mText[$this->mPos+1] == "[" ) {
- $queueToken["type"] = "[[";
+ } else if ( $this->continues("[") ) {
+ $queueToken["type"] = "[[";
$queueToken["text"] = "";
+ // Check for a "prefixed link", e.g. Al[[Khazar]]
+ // Mostly for arabic wikipedia
+ if ( $this->linkPrefixExtension ) {
+ while ( $this->linkPrefixExtension
+ && ($len = strlen( $token["text"] ) ) > 0
+ && !ctype_space( $token["text"][$len-1] ) )
+ {
+ //prepend the character to the link's open tag
+ $queueToken["text"] = $token["text"][$len-1] . $queueToken["text"];
+ //remove character from the end of the text token
+ $token["text"] = substr( $token["text"], 0, -1);
+ }
+ }
$this->mQueuedToken[] = $queueToken;
$this->mPos += 2;
break 2; // switch + while
}
break;
case "]": // for end of links "]]"
- if ( $this->mText[$this->mPos+1] == "]" ) {
+ if ( $this->continues("]") ) {
$queueToken["type"] = "]]";
$queueToken["text"] = "";
$this->mQueuedToken[] = $queueToken;
}
break;
case "'": // for all kind of em's and strong's
- if ( $this->mText[$this->mPos+1] == "'" ) {
+ if ( $this->continues("'") ) {
$queueToken["type"] = "'";
$queueToken["text"] = "";
- while(isset($this->mText[$this->mPos+1]) && $this->mText[$this->mPos+1] == "'" ) {
+ while( ($this->mPos+1 < $this->mTextLength)
+ && $this->mText[$this->mPos+1] == "'" )
+ {
$queueToken["type"] .= "'";
$this->mPos ++;
}
break;
case "\n": // for block levels, actually, only "----" is handled.
case "\r":
- if ( isset($this->mText[$this->mPos+4]) &&
- $this->mText[$this->mPos+1] == "-" &&
- $this->mText[$this->mPos+2] == "-" &&
- $this->mText[$this->mPos+3] == "-" &&
- $this->mText[$this->mPos+4] == "-" ) {
+ if ( $this->continues( "----" ) )
+ {
$queueToken["type"] = "----";
$queueToken["text"] = "";
$this->mQueuedToken[] = $queueToken;
$this->mPos += 5;
- while (isset($this->mText[$this->mPos]) and $this->mText[$this->mPos] == "-" ) {
+ while ( $this->mPos<$this->mTextLength
+ and $this->mText[$this->mPos] == "-" )
+ {
$this->mPos ++;
}
break 2;
}
+ break;
+ case "!": // French spacing rules have a space before exclamation
+ case "?": // and question marks. Those have to become
+ case ":": // And colons, Hashar says ...
+ if ( $this->preceeded( " " ) )
+ {
+ // strip blank from Token
+ $token["text"] = substr( $token["text"], 0, -1 );
+ $queueToken["type"] = "blank";
+ $queueToken["text"] = " {$ch}";
+ $this->mQueuedToken[] = $queueToken;
+ $this->mPos ++;
+ break 2; // switch + while
+ }
+ break;
+ case "0": // A space between two numbers is used to ease reading
+ case "1": // of big numbers, e.g. 1 000 000. Those spaces need
+ case "2": // to be unbreakable
+ case "3":
+ case "4":
+ case "5":
+ case "6":
+ case "7":
+ case "8":
+ case "9":
+ if ( ($this->mTextLength >= $this->mPos +2)
+ && ($this->mText[$this->mPos+1] == " ")
+ && ctype_digit( $this->mText[$this->mPos+2] ) )
+ {
+ $queueToken["type"] = "blank";
+ $queueToken["text"] = $ch . " ";
+ $this->mQueuedToken[] = $queueToken;
+ $this->mPos += 2;
+ break 2; // switch + while
+ }
+ break;
+ case "\302": // first byte of UTF-8 Character Guillemet-left
+ if ( $this->continues( "\253 ") ) // second byte and a blank
+ {
+ $queueToken["type"] = "blank";
+ $queueToken["text"] = "\302\253 ";
+ $this->mQueuedToken[] = $queueToken;
+ $this->mPos += 3;
+ break 2; // switch + while
+ }
+ break;
+ case "\273": //last byte of UTF-8 Character Guillemet-right
+ if ( $this->preceeded( " \302" ) )
+ {
+ $queueToken["type"] = "blank";
+ $queueToken["text"] = " \302\273";
+ $token["text"] = substr( $token["text"], 0, -2 );
+ $this->mQueuedToken[] = $queueToken;
+ $this->mPos ++;
+ break 2; // switch + while
+ }
+ break;
+
} /* switch */
$token["text"].=$ch;
$this->mPos ++;
// echo $this->mPos . "<br>\n";
} /* while */
} /* if (nothing left in queue) */
+
+ wfProfileOut( $fname );
return $token;
}
-
+ // function continues
+ // checks whether the mText continues with $cont from mPos+1
+ /* private */ function continues( $cont )
+ {
+ // If string is not long enough to contain $cont, return false
+ if ( $this->mTextLength < $this->mPos + strlen( $cont ) )
+ return false;
+ for ( $i=0; $i < strlen( $cont ); $i++ )
+ {
+ if ( $this->mText[$this->mPos+1+$i] != $cont[$i] )
+ return false;
+ }
+ return true;
+ }
+
+ // function preceeded
+ // checks whether the mText is preceeded by $prec at position mPos
+ /* private */ function preceeded( $prec )
+ {
+ $len = strlen( $prec );
+ // if $prec is longer than the text up to mPos, return false
+ if ( $this->mPos < $len )
+ return false;
+ return ( 0 == strcmp( $prec, substr($this->mText, $this->mPos-$len, $len) ) );
+ }
}
dépôts / lhc / web / wiklou.git / blobdiff