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-rwxr-xr-xdocs/com/plugin/markdown/markdown.js402
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-/**
- * The reveal.js markdown plugin. Handles parsing of
- * markdown inside of presentations as well as loading
- * of external markdown documents.
- */
-(function( root, factory ) {
- if( typeof exports === 'object' ) {
- module.exports = factory( require( './marked' ) );
- }
- else {
- // Browser globals (root is window)
- root.RevealMarkdown = factory( root.marked );
- root.RevealMarkdown.initialize();
- }
-}( this, function( marked ) {
-
- if( typeof marked === 'undefined' ) {
- throw 'The reveal.js Markdown plugin requires marked to be loaded';
- }
-
- if( typeof hljs !== 'undefined' ) {
- marked.setOptions({
- highlight: function( lang, code ) {
- return hljs.highlightAuto( lang, code ).value;
- }
- });
- }
-
- var DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$',
- DEFAULT_NOTES_SEPARATOR = 'note:',
- DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
- DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$';
-
- var SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
-
-
- /**
- * Retrieves the markdown contents of a slide section
- * element. Normalizes leading tabs/whitespace.
- */
- function getMarkdownFromSlide( section ) {
-
- var template = section.querySelector( 'script' );
-
- // strip leading whitespace so it isn't evaluated as code
- var text = ( template || section ).textContent;
-
- // restore script end tags
- text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), '</script>' );
-
- var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
- leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
-
- if( leadingTabs > 0 ) {
- text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
- }
- else if( leadingWs > 1 ) {
- text = text.replace( new RegExp('\\n? {' + leadingWs + '}', 'g'), '\n' );
- }
-
- return text;
-
- }
-
- /**
- * Given a markdown slide section element, this will
- * return all arguments that aren't related to markdown
- * parsing. Used to forward any other user-defined arguments
- * to the output markdown slide.
- */
- function getForwardedAttributes( section ) {
-
- var attributes = section.attributes;
- var result = [];
-
- for( var i = 0, len = attributes.length; i < len; i++ ) {
- var name = attributes[i].name,
- value = attributes[i].value;
-
- // disregard attributes that are used for markdown loading/parsing
- if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
-
- if( value ) {
- result.push( name + '="' + value + '"' );
- }
- else {
- result.push( name );
- }
- }
-
- return result.join( ' ' );
-
- }
-
- /**
- * Inspects the given options and fills out default
- * values for what's not defined.
- */
- function getSlidifyOptions( options ) {
-
- options = options || {};
- options.separator = options.separator || DEFAULT_SLIDE_SEPARATOR;
- options.notesSeparator = options.notesSeparator || DEFAULT_NOTES_SEPARATOR;
- options.attributes = options.attributes || '';
-
- return options;
-
- }
-
- /**
- * Helper function for constructing a markdown slide.
- */
- function createMarkdownSlide( content, options ) {
-
- options = getSlidifyOptions( options );
-
- var notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) );
-
- if( notesMatch.length === 2 ) {
- content = notesMatch[0] + '<aside class="notes" data-markdown>' + notesMatch[1].trim() + '</aside>';
- }
-
- // prevent script end tags in the content from interfering
- // with parsing
- content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER );
-
- return '<script type="text/template">' + content + '</script>';
-
- }
-
- /**
- * Parses a data string into multiple slides based
- * on the passed in separator arguments.
- */
- function slidify( markdown, options ) {
-
- options = getSlidifyOptions( options );
-
- var separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
- horizontalSeparatorRegex = new RegExp( options.separator );
-
- var matches,
- lastIndex = 0,
- isHorizontal,
- wasHorizontal = true,
- content,
- sectionStack = [];
-
- // iterate until all blocks between separators are stacked up
- while( matches = separatorRegex.exec( markdown ) ) {
- notes = null;
-
- // determine direction (horizontal by default)
- isHorizontal = horizontalSeparatorRegex.test( matches[0] );
-
- if( !isHorizontal && wasHorizontal ) {
- // create vertical stack
- sectionStack.push( [] );
- }
-
- // pluck slide content from markdown input
- content = markdown.substring( lastIndex, matches.index );
-
- if( isHorizontal && wasHorizontal ) {
- // add to horizontal stack
- sectionStack.push( content );
- }
- else {
- // add to vertical stack
- sectionStack[sectionStack.length-1].push( content );
- }
-
- lastIndex = separatorRegex.lastIndex;
- wasHorizontal = isHorizontal;
- }
-
- // add the remaining slide
- ( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
-
- var markdownSections = '';
-
- // flatten the hierarchical stack, and insert <section data-markdown> tags
- for( var i = 0, len = sectionStack.length; i < len; i++ ) {
- // vertical
- if( sectionStack[i] instanceof Array ) {
- markdownSections += '<section '+ options.attributes +'>';
-
- sectionStack[i].forEach( function( child ) {
- markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
- } );
-
- markdownSections += '</section>';
- }
- else {
- markdownSections += '<section '+ options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], options ) + '</section>';
- }
- }
-
- return markdownSections;
-
- }
-
- /**
- * Parses any current data-markdown slides, splits
- * multi-slide markdown into separate sections and
- * handles loading of external markdown.
- */
- function processSlides() {
-
- var sections = document.querySelectorAll( '[data-markdown]'),
- section;
-
- for( var i = 0, len = sections.length; i < len; i++ ) {
-
- section = sections[i];
-
- if( section.getAttribute( 'data-markdown' ).length ) {
-
- var xhr = new XMLHttpRequest(),
- url = section.getAttribute( 'data-markdown' );
-
- datacharset = section.getAttribute( 'data-charset' );
-
- // see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
- if( datacharset != null && datacharset != '' ) {
- xhr.overrideMimeType( 'text/html; charset=' + datacharset );
- }
-
- xhr.onreadystatechange = function() {
- if( xhr.readyState === 4 ) {
- // file protocol yields status code 0 (useful for local debug, mobile applications etc.)
- if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) {
-
- section.outerHTML = slidify( xhr.responseText, {
- separator: section.getAttribute( 'data-separator' ),
- verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
- notesSeparator: section.getAttribute( 'data-separator-notes' ),
- attributes: getForwardedAttributes( section )
- });
-
- }
- else {
-
- section.outerHTML = '<section data-state="alert">' +
- 'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
- 'Check your browser\'s JavaScript console for more details.' +
- '<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>' +
- '</section>';
-
- }
- }
- };
-
- xhr.open( 'GET', url, false );
-
- try {
- xhr.send();
- }
- catch ( e ) {
- alert( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
- }
-
- }
- else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 'data-separator-notes' ) ) {
-
- section.outerHTML = slidify( getMarkdownFromSlide( section ), {
- separator: section.getAttribute( 'data-separator' ),
- verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
- notesSeparator: section.getAttribute( 'data-separator-notes' ),
- attributes: getForwardedAttributes( section )
- });
-
- }
- else {
- section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) );
- }
- }
-
- }
-
- /**
- * Check if a node value has the attributes pattern.
- * If yes, extract it and add that value as one or several attributes
- * the the terget element.
- *
- * You need Cache Killer on Chrome to see the effect on any FOM transformation
- * directly on refresh (F5)
- * http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
- */
- function addAttributeInElement( node, elementTarget, separator ) {
-
- var mardownClassesInElementsRegex = new RegExp( separator, 'mg' );
- var mardownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"=]+?)\"", 'mg' );
- var nodeValue = node.nodeValue;
- if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) {
-
- var classes = matches[1];
- nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( mardownClassesInElementsRegex.lastIndex );
- node.nodeValue = nodeValue;
- while( matchesClass = mardownClassRegex.exec( classes ) ) {
- elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
- }
- return true;
- }
- return false;
- }
-
- /**
- * Add attributes to the parent element of a text node,
- * or the element of an attribute node.
- */
- function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) {
-
- if ( element != null && element.childNodes != undefined && element.childNodes.length > 0 ) {
- previousParentElement = element;
- for( var i = 0; i < element.childNodes.length; i++ ) {
- childElement = element.childNodes[i];
- if ( i > 0 ) {
- j = i - 1;
- while ( j >= 0 ) {
- aPreviousChildElement = element.childNodes[j];
- if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) {
- previousParentElement = aPreviousChildElement;
- break;
- }
- j = j - 1;
- }
- }
- parentSection = section;
- if( childElement.nodeName == "section" ) {
- parentSection = childElement ;
- previousParentElement = childElement ;
- }
- if ( typeof childElement.setAttribute == 'function' || childElement.nodeType == Node.COMMENT_NODE ) {
- addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes );
- }
- }
- }
-
- if ( element.nodeType == Node.COMMENT_NODE ) {
- if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) == false ) {
- addAttributeInElement( element, section, separatorSectionAttributes );
- }
- }
- }
-
- /**
- * Converts any current data-markdown slides in the
- * DOM to HTML.
- */
- function convertSlides() {
-
- var sections = document.querySelectorAll( '[data-markdown]');
-
- for( var i = 0, len = sections.length; i < len; i++ ) {
-
- var section = sections[i];
-
- // Only parse the same slide once
- if( !section.getAttribute( 'data-markdown-parsed' ) ) {
-
- section.setAttribute( 'data-markdown-parsed', true )
-
- var notes = section.querySelector( 'aside.notes' );
- var markdown = getMarkdownFromSlide( section );
-
- section.innerHTML = marked( markdown );
- addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) ||
- section.parentNode.getAttribute( 'data-element-attributes' ) ||
- DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
- section.getAttribute( 'data-attributes' ) ||
- section.parentNode.getAttribute( 'data-attributes' ) ||
- DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
-
- // If there were notes, we need to re-add them after
- // having overwritten the section's HTML
- if( notes ) {
- section.appendChild( notes );
- }
-
- }
-
- }
-
- }
-
- // API
- return {
-
- initialize: function() {
- processSlides();
- convertSlides();
- },
-
- // TODO: Do these belong in the API?
- processSlides: processSlides,
- convertSlides: convertSlides,
- slidify: slidify
-
- };
-
-}));