* Adapted by Frank Luithle * * WikiLinks and binary already stripped off -> just the rendering core */ // URL prefixes $ewiki_idf_url = array( "http://", "mailto:", "ftp://", "irc://", "telnet://", "news://", "internal://", "chrome://", "file://" ); // allowed wikinames //define( "EWIKI_CHARS_L", "a-z����_��$" ); //define( "EWIKI_CHARS_U", "A-Z���" ); function wiki_format( $wiki_source, $strip_slashes = true, $safe_html_allowed = true, $table_html_allowed = false ) { if ( $strip_slashes ) { $wiki_source = stripslashes( $wiki_source ); } // formatted output $o = "

\n"; // state vars $li_o = ""; $tbl_o = 0; $post = ""; $wm_whole_line = array( "!!!" => "h2", "!!" => "h3", "!" => "h4", " " => "tt", ";:" => 'div style="left-margin:10pt;"' ); $table_defaults = 'cellpadding="2" border="1" cellspacing="0"'; // these tags will be preserved if the $safe_html_allowed argument // is set to 'true' $rescue_html = array( "tt", "b", "i", "strong", "em", "s", "kbd", "var", "xmp", "sup", "sub", "pre", "q", "h2", "h3", "h4", "h5", "h6", "cite", "code", "u" ); $syn_htmlentities = array( "&" => "&", ">" => ">", "<" => "<", "%%%" => "
" ); $wm_list = array( "-" => array('ul type="square"', "", "li"), "*" => array('ul type="circle"', "", "li"), "#" => array("ol", "", "li"), ":" => array("dl", "dt", "dd") ); $wm_text_style = array( "'''" => array("''__", "__''"), "___" => array("''__", "__''"), "''" => array("", ""), "__" => array("", ""), // "^^" => array("", ""), // "***" => array("", ""), // "###" => array("", ""), "**" => array("", ""), "##" => array("", ""), "��" => array("", "") ); $link_regex = "#(!?\[[^[\]\n]+\])|((?:!?[a-z]{2,6}://|mailto:)[^\s\[\]\'\"\)\,<]+)#"; #$link_regex = "#(!?\[[^[\]\n]+\])|((?:!?[".EWIKI_CHARS_U."]+[".EWIKI_CHARS_L. # ":]+){2}[\w\d]*)|((?:!?[a-z]{2,6}://|mailto:)[^\s\[\]\'\"\)\,<]+)#"; // eliminate html foreach ( $syn_htmlentities as $find => $replace ) { $wiki_source = str_replace( $find, $replace, $wiki_source ); } array_pop( $syn_htmlentities ); // unescape allowed html if ( $safe_html_allowed ) { foreach ( $rescue_html as $tag ) { foreach( array( $tag, "/$tag", ( $tag = strtoupper($tag) ), "/$tag" ) as $tag ) { $wiki_source = str_replace( '<' . $tag . '>', "<" . $tag . ">", $wiki_source ); } } } $wiki_source = trim( $wiki_source ) . "\n"; foreach ( explode( "\n", $wiki_source ) as $line ) { $line = rtrim( $line ); $post = ""; // paragraphs if ( empty($line) ) { $post .= "

\n\n

"; } elseif ( strpos( $line, "----" ) === 0 ) { $o .= "

\n"; continue; } elseif ( strpos( $line, "<!--" ) === 0 ) { $o .= "\n"; continue; } // unescape html markup || tables wiki markup if ( strlen( $line ) && ( $line[0] == "|" ) ) { if ( strlen( $line ) > strlen( trim( $line, "|" ) ) + 1 ) { $line = substr( $line, 1, strlen( $line ) - 2 ); if ( !$tbl_o ) { $o .= "\n"; } $line = "\n\n\n"; $tbl_o = 1; } elseif ( $table_html_allowed ) { $line = ltrim( substr( $line, 1 ) ); foreach ( array_flip( $syn_htmlentities ) as $find => $replace ) { $line = str_replace( $find, $replace, $line ); } } } elseif ($tbl_o) { $o .= "
" . str_replace("|", "", $line) . "
\n"; $tbl_o = 0; } // whole-line wikimarkup foreach ( $wm_whole_line as $find => $replace ) { if ( substr( $line, 0, strlen($find) ) == $find ) { $line = ltrim( substr( $line, strlen($find) ) ); $o .= "<$replace>"; $post = "" . $post; } } // wiki list markup if ( strlen( $li_o ) || strlen( $line ) && isset( $wm_list[@$line[0]] ) ) { $n = 0; $li = ""; // count differences to previous list wikimarkup while ( strlen( $line ) && ( $li0 = $line[0] ) && isset( $wm_list[$li0] ) ) { $li .= $li0; $n++; $line = substr($line, 1); } $line = ltrim($line); // fetch list definition if ( strlen( $li ) && ( $last_list_i = $li[strlen($li)-1] ) ) list( $list_tag, $list_dt0, $list_entry_tag ) = $wm_list[$last_list_i]; // output lists until "$li_o" == "$li" (list wikimarkup state var) while ( strlen($li_o) > strlen($li) ) { $del = $li_o[ strlen($li_o) - 1 ]; $o .= "\n"; $li_o = substr( $li_o, 0, strlen($li_o) - 1 ); } // more work for
lists if ( !empty($list_dt0) ) { list( $line_dt, $line ) = explode( $last_list_i, $line, 2 ); $o .= "<$list_dt0>$line_dt"; $list_dt0 = $last_list_i = false; } // finally enclose current line in
  • ...
    • if ( !empty($line) ) { $o .= "<$list_entry_tag>"; $post = "" . $post; } $li_o = $li; } // link-regex here?? // (was formerly, may be faster if applied to the whole formatted // page, but this could also introduce some rendering bugs) // text style triggers foreach ( $wm_text_style as $find => $replace ) { $n = strlen( $find ); $loop = 20; while( ( $loop-- ) && ( ($l = strpos($line, $find)) !== false ) && ( $r = strpos($line, $find, $l + $n) ) ) { $line = substr( $line, 0, $l ) . $replace[0] . substr( $line, $l + strlen($find), $r - $l - $n ) . $replace[1] . substr( $line, $r + $n ); } } // add formatted line to page-output $o .= $line . $post . "\n"; } // close last line $o .= "

    \n"; // finally the link-detection-regex // (impossible to do with simple string arithmetics) $o = preg_replace_callback( $link_regex, "wiki_link_regex_callback", $o ); return( $o ); } function wiki_link_regex_callback( $uu ) { global $ewiki_idf_url; $str = $uu[0]; // link bracket '[' escaped with '!' if ( $str[0] == "!" ) { return(substr($str, 1)); } elseif ( $str[0] == "[" ) { $str = substr( $str, 1, strlen($str) - 2 ); } // explicit title given via [ foo | bar ] $href = $title = strtok( $str, "|" ); if ( $uu = strtok("|") ) { $href = $uu; } // title and href swapped: swap back if ( strpos( "://", $title ) || strpos( $title, ":" ) && !strpos( $href, ":" ) ) { $uu = $title; $title = $href; $href = $uu; } $title = trim($title); $href = trim($href); /* create _no_ WikiLinks */ if ( false ){ // interwiki links if ( strpos($href, ":") && !strpos($href, "//") && ($p1 = @$ewiki_interwiki[strtok($href, ":")]) ) { while ($p1_alias = @$ewiki_interwiki[$p1]) { $p1 = $p1_alias; } $href = $p1 . strtok("\000"); } elseif (($ewiki_links === true) || @$ewiki_links[$href] || @$ewiki_internal_pages[$href]) { // ordinary internal WikiLinks $str = '' . $title . ''; } else { $str = '' . $title . '?'; } } // convert normal URLs foreach ( $ewiki_idf_url as $find ) { if ( strpos( $href, $find ) === 0 ) { $str = '' . $title . ''; break; } } return($str); } ?>