xref: /dokuwiki/inc/parser/xhtml.php (revision 7196b54129bb4bdc58761a19ba279ff0675a67bf)

<?php
if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');

if ( !defined('DOKU_LF') ) {
    // Some whitespace to help View > Source
    define ('DOKU_LF',"\n");
}

if ( !defined('DOKU_TAB') ) {
    // Some whitespace to help View > Source
    define ('DOKU_TAB',"\t");
}

/**
* @TODO Probably useful for have constant for linefeed formatting
*/
class Doku_Renderer_XHTML {

    var $doc = '';

    var $headers = array();

    var $footnotes = array();

    var $footnoteIdStack = array();

    var $acronyms = array();
    var $smileys = array();
    var $badwords = array();
    var $entities = array();
    var $interwiki = array();

    function document_start() {
        ob_start();
    }

    function document_end() {

        if ( count ($this->footnotes) > 0 ) {
            echo '<div class="footnotes">'.DOKU_LF;
            foreach ( $this->footnotes as $footnote ) {
                echo $footnote;
            }
            echo '</div>'.DOKU_LF;
        }

        $this->doc .= ob_get_contents();
        ob_end_clean();

    }

    function toc_open() {
        echo '<div class="toc">'.DOKU_LF;
        echo '<div class="tocheader">Table of Contents <script type="text/javascript">showTocToggle("+","-")</script></div>'.DOKU_LF;
        echo '<div id="tocinside">'.DOKU_LF;
    }

    function tocbranch_open($level) {
        echo '<ul class="toc">'.DOKU_LF;
    }

    function tocitem_open($level, $empty = FALSE) {
        if ( !$empty ) {
            echo '<li class="level'.$level.'">';
        } else {
            echo '<li class="clear">';
        }
    }

    function tocelement($level, $title) {
        echo '<span class="li"><a href="#'.$this->__headerToLink($title).'" class="toc">';
        echo $this->__xmlEntities($title);
        echo '</a></span>';
    }

    function tocitem_close($level) {
        echo '</li>'.DOKU_LF;
    }

    function tocbranch_close($level) {
        echo '</ul>'.DOKU_LF;
    }

    function toc_close() {
        echo '</div>'.DOKU_LF.'</div>'.DOKU_LF;
    }

    function header($text, $level) {
        echo DOKU_LF.'<a name="'.$this->__headerToLink($text).'"></a><h'.$level.'>';
        echo $this->__xmlEntities($text);
        echo "</h$level>".DOKU_LF;
    }

    function section_open($level) {
        echo "<div class=\"level$level\">".DOKU_LF;
    }

    function section_close() {
        echo DOKU_LF.'</div>'.DOKU_LF;
    }

    function cdata($text) {
        echo $this->__xmlEntities($text);
    }

    function p_open() {
        echo DOKU_LF.'<p>'.DOKU_LF;
    }

    function p_close() {
        echo DOKU_LF.'</p>'.DOKU_LF;
    }

    function linebreak() {
        echo '<br/>'.DOKU_LF;
    }

    function hr() {
        echo '<hr noshade="noshade" size="1" />'.DOKU_LF;
    }

    function strong_open() {
        echo '<strong>';
    }

    function strong_close() {
        echo '</strong>';
    }

    function emphasis_open() {
        echo '<em>';
    }

    function emphasis_close() {
        echo '</em>';
    }

    function underline_open() {
        echo '<u>';
    }

    function underline_close() {
        echo '</u>';
    }

    function monospace_open() {
        echo '<code>';
    }

    function monospace_close() {
        echo '</code>';
    }

    function subscript_open() {
        echo '<sub>';
    }

    function subscript_close() {
        echo '</sub>';
    }

    function superscript_open() {
        echo '<sup>';
    }

    function superscript_close() {
        echo '</sup>';
    }

    function deleted_open() {
        echo '<del>';
    }

    function deleted_close() {
        echo '</del>';
    }

    function footnote_open() {
        $id = $this->__newFootnoteId();
        echo '<a href="#fn'.$id.'" name="fnt'.$id.'" class="fn_top">'.$id.')</a>';
        $this->footnoteIdStack[] = $id;
        ob_start();
    }

    function footnote_close() {
        $contents = ob_get_contents();
        ob_end_clean();
        $id = array_pop($this->footnoteIdStack);

        $contents = '<div class="fn"><a href="#fnt'.
            $id.'" name="fn'.$id.'" class="fn_bot">'.
                $id.')</a> ' .DOKU_LF .$contents. "\n" . '</div>' . DOKU_LF;
        $this->footnotes[$id] = $contents;
    }

    function listu_open() {
        echo '<ul>'.DOKU_LF;
    }

    function listu_close() {
        echo '</ul>'.DOKU_LF;
    }

    function listo_open() {
        echo '<ol>'.DOKU_LF;
    }

    function listo_close() {
        echo '</ol>'.DOKU_LF;
    }

    function listitem_open($level) {
        echo '<li class="level'.$level.'">';
    }

    function listitem_close() {
        echo '</li>'.DOKU_LF;
    }

    function listcontent_open() {
        echo '<span class="li">';
    }

    function listcontent_close() {
        echo '</span>'.DOKU_LF;
    }

    function unformatted($text) {
        echo $this->__xmlEntities($text);
    }

    /**
    * @TODO Support optional eval of code depending on conf/dokuwiki.php
    */
    function php($text) {
        $this->preformatted($text);
    }

    /**
    * @TODO Support optional echo of HTML depending on conf/dokuwiki.php
    */
    function html($text) {
        $this->file($text);
    }

    function preformatted($text) {
        echo '<pre class="code">' . $this->__xmlEntities($text) . '</pre>'. DOKU_LF;
    }

    function file($text) {
        echo '<pre class="file">' . $this->__xmlEntities($text). '</pre>'. DOKU_LF;
    }

    /**
    * @TODO Shouldn't this output <blockquote??
    */
    function quote_open() {
        echo '<div class="quote">'.DOKU_LF;
    }

    /**
    * @TODO Shouldn't this output </blockquote>?
    */
    function quote_close() {
        echo '</div>'.DOKU_LF;
    }

    /**
    * @TODO Hook up correctly with Geshi
    */
    function code($text, $language = NULL) {

        if ( is_null($language) ) {
            $this->preformatted($text);
        } else {

            // Handle with Geshi here (needs tuning)
            require_once(DOKU_INC . 'inc/geshi.php');
            $geshi = new GeSHi($text, strtolower($language), DOKU_INC . 'inc/geshi');
            $geshi->enable_classes();
            $geshi->set_header_type(GESHI_HEADER_PRE);
            $geshi->set_overall_class('code');

            // Fix this
            $geshi->set_link_target('_blank');

            $text = $geshi->parse_code();
            echo $text;
        }
    }

    function acronym($acronym) {

        if ( array_key_exists($acronym, $this->acronyms) ) {

            $title = $this->__xmlEntities($this->acronyms[$acronym]);

            echo '<acronym title="'.$title
                .'">'.$this->__xmlEntities($acronym).'</acronym>';

        } else {
            echo $this->__xmlEntities($acronym);
        }
    }

    /**
    * @TODO Remove hard coded link to splitbrain.org
    */
    function smiley($smiley) {

        if ( array_key_exists($smiley, $this->smileys) ) {
            $title = $this->__xmlEntities($this->smileys[$smiley]);
            echo '<img src="http://wiki.splitbrain.org/smileys/'.$this->smileys[$smiley].
                '" align="middle" alt="'.
                    $this->__xmlEntities($smiley).'" />';
        } else {
            echo $this->__xmlEntities($smiley);
        }
    }

    /**
    * @TODO localization?
    */
    function wordblock($word) {
        if ( array_key_exists($word, $this->badwords) ) {
            echo '** BLEEP **';
        } else {
            echo $this->__xmlEntities($word);
        }
    }

    function entity($entity) {
        if ( array_key_exists($entity, $this->entities) ) {
            echo $this->entities[$entity];
        } else {
            echo $this->__xmlEntities($entity);
        }
    }

    function multiplyentity($x, $y) {
        echo "$x&#215;$y";
    }

    function singlequoteopening() {
        echo "&#8216;";
    }

    function singlequoteclosing() {
        echo "&#8217;";
    }

    function doublequoteopening() {
        echo "&#8220;";
    }

    function doublequoteclosing() {
        echo "&#8221;";
    }

    /**
    * @TODO Handle local vs. global namespace checks
    */
    function camelcaselink($link) {

        echo '<a href="'.$link.'"';

        if ( wikiPageExists($link) ) {
            echo ' class="wikilink1"';
        } else {
            echo ' class="wikilink2"';
        }

        // Probably dont need to convert entities - parser would have rejected it
        echo ' onclick="return svchk()" onkeypress="return svchk()">';
        echo $this->__xmlEntities($link);
        echo '</a>';
    }

    /**
    * @TODO Hook up with page resolver.
    * @TODO Support media
    * @TODO correct attributes
    */
    function internallink($link, $title = NULL) {

        echo '<a';

        $title = $this->__getLinkTitle($title,$link, $isImage);

        if ( !$isImage ) {

            if ( wikiPageExists($link) ) {
                echo ' class="wikilink1"';
            } else {
                echo ' class="wikilink2"';
            }

        } else {
            echo ' class="media"';
        }

        echo ' href="http://wiki.splitbrain.org/'.$this->__xmlEntities($link).'"';

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';
    }


    /**
    * @TODO Should list assume blacklist check already made?
    * @TODO External link icon
    * @TODO correct attributes
    */
    function externallink($link, $title = NULL) {

        echo '<a';

        $title = $this->__getLinkTitle($title, $link, $isImage);

        if ( !$isImage ) {
            echo ' class="urlextern"';
        } else {
            echo ' class="media"';
        }

        echo ' target="_blank" href="'.$this->__xmlEntities($link).'"';

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';
    }

    /**
    * @TODO Remove hard coded link to splitbrain.org on style
    */
    function interwikilink($link, $title = NULL, $wikiName, $wikiUri) {

        // RESOLVE THE URL
        if ( isset($this->interwiki[$wikiName]) ) {

            $wikiUriEnc = urlencode($wikiUri);

            if ( strstr($this->interwiki[$wikiName],'{URL}' ) !== FALSE ) {

                $url = str_replace('{URL}', $wikiUriEnc, $this->interwiki[$wikiName] );

            } else if ( strstr($this->interwiki[$wikiName],'{NAME}' ) !== FALSE ) {

                $url = str_replace('{NAME}', $wikiUriEnc, $this->interwiki[$wikiName] );

            } else {

                $url = $this->interwiki[$wikiName] . urlencode($wikiUri);

            }

        } else {
            // Default to Google I'm feeling lucky
            $url = 'http://www.google.com/search?q='.urlencode($wikiUri).'&amp;btnI=lucky';
        }

        // BUILD THE LINK
        echo '<a';

        $title = $this->__getLinkTitle($title, $wikiUri, $isImage);

        if ( !$isImage ) {
            echo ' class="interwiki"';
        } else {
            echo ' class="media"';
        }

        echo ' href="'.$this->__xmlEntities($url).'"';

        if ( FALSE !== ( $type = interwikiImgExists($wikiName) ) ) {
            echo ' style="background: transparent url(http://wiki.splitbrain.org/interwiki/'.
                $wikiName.'.'.$type.') 0px 1px no-repeat;"';
        }

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';
    }

    /**
    * @TODO Correct the CSS class for files? (not windows)
    * @TODO Remove hard coded URL to splitbrain.org
    */
    function filelink($link, $title = NULL) {
        echo '<a';

        $title = $this->__getLinkTitle($title, $link, $isImage);

        if ( !$isImage ) {
            echo ' class="windows"';
        } else {
            echo ' class="media"';
        }

        echo ' href="'.$this->__xmlEntities($link).'"';

        echo ' style="background: transparent url(http://wiki.splitbrain.org/images/windows.gif) 0px 1px no-repeat;"';

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';
    }

    /**
    * @TODO Remove hard coded URL to splitbrain.org
    * @TODO Add error message for non-IE users
    */
    function windowssharelink($link, $title = NULL) {
        echo '<a';

        $title = $this->__getLinkTitle($title, $link, $isImage);

        if ( !$isImage ) {
            echo ' class="windows"';
        } else {
            echo ' class="media"';
        }

        $link = str_replace('\\','/',$link);
        $link = 'file:///'.$link;
        echo ' href="'.$this->__xmlEntities($link).'"';

        echo ' style="background: transparent url(http://wiki.splitbrain.org/images/windows.gif) 0px 1px no-repeat;"';

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';
    }

    /**
    * @TODO Protect email address from harvesters
    * @TODO Remove hard coded link to splitbrain.org
    */
    function email($address, $title = NULL) {
        echo '<a';

        $title = $this->__getLinkTitle($title, $address, $isImage);

        if ( !$isImage ) {
            echo ' class="mail"';
        } else {
            echo ' class="media"';
        }

        echo ' href="mailto:'.$this->__xmlEntities($address).'"';

        echo ' style="background: transparent url(http://wiki.splitbrain.org/images/mail_icon.gif) 0px 1px no-repeat;"';

        echo ' onclick="return svchk()" onkeypress="return svchk()">';

        echo $title;

        echo '</a>';

    }

    /**
    * @TODO Resolve namespaces
    * @TODO Add image caching
    * @TODO Remove hard coded link to splitbrain.org
    */
    function internalmedia (
        $src,$title=NULL,$align=NULL,$width=NULL,$height=NULL,$cache=NULL
        ) {

        // Sort out the namespace here...
        if ( strpos($src,':') ) {
            $src = explode(':',$src);
            $src = $src[1];
        }
        echo '<img class="media" src="http://wiki.splitbrain.org/media/wiki/'.$this->__xmlEntities($src).'"';

        if ( !is_null($title) ) {
            echo ' title="'.$this->__xmlEntities($title).'"';
        }

        if ( !is_null($align) ) {
            echo ' align="'.$align.'"';
        }

        if ( !is_null($width) ) {
            echo ' width="'.$this->__xmlEntities($width).'"';
        }

        if ( !is_null($height) ) {
            echo ' height="'.$this->__xmlEntities($height).'"';
        }

        echo '/>';

    }

    /**
    * @TODO Add image caching
    */
    function externalmedia (
        $src,$title=NULL,$align=NULL,$width=NULL,$height=NULL,$cache=NULL
        ) {

        echo '<img class="media" src="'.$this->__xmlEntities($src).'"';

        if ( !is_null($title) ) {
            echo ' title="'.$this->__xmlEntities($title).'"';
        }

        if ( !is_null($align) ) {
            echo ' align="'.$align.'"';
        }

        if ( !is_null($width) ) {
            echo ' width="'.$this->__xmlEntities($width).'"';
        }

        if ( !is_null($height) ) {
            echo ' height="'.$this->__xmlEntities($height).'"';
        }

        echo '/>';
    }

    // $numrows not yet implemented
    function table_open($maxcols = NULL, $numrows = NULL){
        echo '<table class="inline">'.DOKU_LF;
    }

    function table_close(){
        echo '</table>'.DOKU_LF.'<br />'.DOKU_LF;
    }

    function tablerow_open(){
        echo DOKU_TAB . '<tr>' . DOKU_LF . DOKU_TAB . DOKU_TAB;
    }

    function tablerow_close(){
        echo DOKU_LF . DOKU_TAB . '</tr>' . DOKU_LF;
    }

    function tableheader_open($colspan = 1, $align = NULL){
        echo '<th';
        if ( !is_null($align) ) {
            echo ' class="'.$align.'align"';
        }
        if ( $colspan > 1 ) {
            echo ' colspan="'.$colspan.'"';
        }
        echo '>';
    }

    function tableheader_close(){
        echo '</th>';
    }

    function tablecell_open($colspan = 1, $align = NULL){
        echo '<td';
        if ( !is_null($align) ) {
            echo ' class="'.$align.'align"';
        }
        if ( $colspan > 1 ) {
            echo ' colspan="'.$colspan.'"';
        }
        echo '>';
    }

    function tablecell_close(){
        echo '</td>';
    }

    //----------------------------------------------------------
    // Utils

    function __newFootnoteId() {
        static $id = 1;
        return $id++;
    }

    function __xmlEntities($string) {
        return htmlspecialchars($string);
    }

    /**
    * @TODO Tuning needed - e.g. utf8 strtolower ?
    */
    function __headerToLink($title) {
        return preg_replace('/\W/','_',trim($title));
    }

    function __getLinkTitle($title, $default, & $isImage) {
        $isImage = FALSE;

        if ( is_null($title) ) {

            return $this->__xmlEntities($default);

        } else if ( is_string($title) ) {

            return $this->__xmlEntities($title);

        } else if ( is_array($title) ) {

            $isImage = TRUE;
            return $this->__imageTitle($title);

        }
    }

    /**
    * @TODO Resolve namespace on internal images
    * @TODO Remove hard coded url to splitbrain.org
    * @TODO Image caching
    */
    function __imageTitle($img) {

        if ( $img['type'] == 'internalmedia' ) {

            // Resolve here...
            if ( strpos($img['src'],':') ) {
                $src = explode(':',$img['src']);
                $src = $src[1];
            } else {
                $src = $img['src'];
            }

            $imgStr = '<img class="media" src="http://wiki.splitbrain.org/media/wiki/'.$this->__xmlEntities($src).'"';

        } else {

            $imgStr = '<img class="media" src="'.$this->__xmlEntities($img['src']).'"';

        }

        if ( !is_null($img['title']) ) {
            $imgStr .= ' alt="'.$this->__xmlEntities($img['title']).'"';
        } else {
            $imgStr .= ' alt=""';
        }

        if ( !is_null($img['align']) ) {
            $imgStr .= ' align="'.$img['align'].'"';
        }

        if ( !is_null($img['width']) ) {
            $imgStr .= ' width="'.$this->__xmlEntities($img['width']).'"';
        }

        if ( !is_null($img['height']) ) {
            $imgStr .= ' height="'.$this->__xmlEntities($img['height']).'"';
        }

        $imgStr .= '/>';

        return $imgStr;
    }
}

/**
* Test whether there's an image to display with this interwiki link
*/
function interwikiImgExists($name) {

    static $exists = array();

    if ( array_key_exists($name,$exists) ) {
        return $exists[$name];
    }

    if( @file_exists( DOKU. 'interwiki/'.$name.'.png') ) {
        $exists[$name] = 'png';
    } else if ( @file_exists( DOKU . 'interwiki/'.$name.'.gif') ) {
        $exists[$name] = 'gif';
    } else {
        $exists[$name] = FALSE;
    }

    return $exists[$name];
}

/**
* For determining whether to use CSS class "wikilink1" or "wikilink2"
* @todo use configinstead of DOKU_DATA
*/
function wikiPageExists($name) {

    static $pages = array();

    if ( array_key_exists($name,$pages) ) {
        return $pages[$name];
    }

    $file = str_replace(':','/',$name).'.txt';

    if ( @file_exists( DOKU_DATA . $file ) ) {
        $pages[$name] = TRUE;
    } else {
        $pages[$name] = FALSE;
    }

    return $pages[$name];
}