update markdown plugin formatting to match reveal.js core
This commit is contained in:
Hakim El Hattab
@@ -2,219 +2,230 @@
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// Modified by Hakim to handle Markdown indented with tabs
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(function(){
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if( typeof marked === 'undefined' ) {
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throw 'The reveal.js Markdown plugin requires marked to be loaded';
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}
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if( typeof marked === 'undefined' ) {
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throw 'The reveal.js Markdown plugin requires marked to be loaded';
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}
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if (typeof hljs !== 'undefined') {
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marked.setOptions({
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highlight: function (lang, code) {
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return hljs.highlightAuto(lang, code).value;
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}
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});
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}
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if( typeof hljs !== 'undefined' ) {
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marked.setOptions({
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highlight: function( lang, code ) {
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return hljs.highlightAuto( lang, code ).value;
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}
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});
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}
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var stripLeadingWhitespace = function(section) {
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var stripLeadingWhitespace = function( section ) {
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var template = section.querySelector( 'script' );
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var template = section.querySelector( 'script' );
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// strip leading whitespace so it isn't evaluated as code
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var text = ( template || section ).textContent;
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// strip leading whitespace so it isn't evaluated as code
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var text = ( template || section ).textContent;
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var leadingWs = text.match(/^\n?(\s*)/)[1].length,
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leadingTabs = text.match(/^\n?(\t*)/)[1].length;
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var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
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leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
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if( leadingTabs > 0 ) {
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text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
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}
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else if( leadingWs > 1 ) {
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text = text.replace( new RegExp('\\n? {' + leadingWs + '}','g'), '\n' );
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}
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if( leadingTabs > 0 ) {
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text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
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}
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else if( leadingWs > 1 ) {
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text = text.replace( new RegExp('\\n? {' + leadingWs + '}','g'), '\n' );
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}
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return text;
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return text;
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};
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};
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var twrap = function(el) {
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var content = el.content || el;
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content += el.asideContent ? ('<aside class="notes" data-markdown>' + el.asideContent + '</aside>') : '';
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return '<script type="text/template">' + content + '</script>';
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};
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var twrap = function( el ) {
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var getForwardedAttributes = function(section) {
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var attributes = section.attributes;
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var result = [];
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var content = el.content || el;
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for( var i = 0, len = attributes.length; i < len; i++ ) {
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var name = attributes[i].name,
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value = attributes[i].value;
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if( el.asideContent ) {
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content += '<aside class="notes" data-markdown>' + el.asideContent + '</aside>';
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}
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// disregard attributes that are used for markdown loading/parsing
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if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
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return '<script type="text/template">' + content + '</script>';
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if( value ) {
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result.push( name + '=' + value );
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}
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else {
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result.push( name );
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}
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}
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};
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return result.join( ' ' );
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};
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var getForwardedAttributes = function( section ) {
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var slidifyMarkdown = function(markdown, separator, vertical, notes, attributes) {
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var attributes = section.attributes;
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var result = [];
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separator = separator || '^\n---\n$';
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notes = notes || 'note:';
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for( var i = 0, len = attributes.length; i < len; i++ ) {
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var name = attributes[i].name,
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value = attributes[i].value;
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var separatorRegex = new RegExp( separator + ( vertical ? '|' + vertical : '' ), 'mg' ),
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horizontalSeparatorRegex = new RegExp( separator ),
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notesSeparatorRegex = new RegExp( notes, 'mgi' ),
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matches,
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noteMatch,
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lastIndex = 0,
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isHorizontal,
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wasHorizontal = true,
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content,
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asideContent,
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slide,
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sectionStack = [],
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markdownSections = '';
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// disregard attributes that are used for markdown loading/parsing
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if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
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// iterate until all blocks between separators are stacked up
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while( matches = separatorRegex.exec( markdown ) ) {
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asideContent = null;
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if( value ) {
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result.push( name + '=' + value );
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}
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else {
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result.push( name );
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}
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}
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// determine direction (horizontal by default)
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isHorizontal = horizontalSeparatorRegex.test( matches[0] );
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return result.join( ' ' );
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if( !isHorizontal && wasHorizontal ) {
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// create vertical stack
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sectionStack.push( [] );
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}
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};
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// pluck slide content from markdown input
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content = markdown.substring( lastIndex, matches.index );
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noteMatch = content.split( notesSeparatorRegex );
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var slidifyMarkdown = function( markdown, separator, vertical, notes, attributes ) {
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if( noteMatch.length === 2 ) {
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content = noteMatch[0];
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asideContent = noteMatch[1].trim();
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}
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separator = separator || '^\n---\n$';
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notes = notes || 'note:';
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slide = {
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content: content,
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asideContent: asideContent || ""
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};
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var separatorRegex = new RegExp( separator + ( vertical ? '|' + vertical : '' ), 'mg' ),
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horizontalSeparatorRegex = new RegExp( separator ),
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notesSeparatorRegex = new RegExp( notes, 'mgi' ),
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matches,
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noteMatch,
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lastIndex = 0,
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isHorizontal,
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wasHorizontal = true,
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content,
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asideContent,
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slide,
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sectionStack = [],
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markdownSections = '';
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if( isHorizontal && wasHorizontal ) {
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// add to horizontal stack
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sectionStack.push(slide);
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} else {
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// add to vertical stack
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sectionStack[sectionStack.length-1].push(slide);
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}
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// iterate until all blocks between separators are stacked up
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while( matches = separatorRegex.exec( markdown ) ) {
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asideContent = null;
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lastIndex = separatorRegex.lastIndex;
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wasHorizontal = isHorizontal;
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}
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// determine direction (horizontal by default)
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isHorizontal = horizontalSeparatorRegex.test( matches[0] );
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// add the remaining slide
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(wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1]).push(markdown.substring(lastIndex));
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if( !isHorizontal && wasHorizontal ) {
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// create vertical stack
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sectionStack.push( [] );
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}
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// flatten the hierarchical stack, and insert <section data-markdown> tags
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for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
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// vertical
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if( sectionStack[k].propertyIsEnumerable(length) && typeof sectionStack[k].splice === 'function' ) {
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markdownSections += '<section '+ attributes +'>' +
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'<section data-markdown>' + sectionStack[k].map(twrap).join('</section><section data-markdown>') + '</section>' +
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'</section>';
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} else {
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markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
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}
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}
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// pluck slide content from markdown input
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content = markdown.substring( lastIndex, matches.index );
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noteMatch = content.split( notesSeparatorRegex );
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return markdownSections;
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};
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if( noteMatch.length === 2 ) {
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content = noteMatch[0];
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asideContent = noteMatch[1].trim();
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}
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var querySlidingMarkdown = function() {
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slide = {
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content: content,
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asideContent: asideContent || ''
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};
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var sections = document.querySelectorAll( '[data-markdown]'),
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section;
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if( isHorizontal && wasHorizontal ) {
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// add to horizontal stack
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sectionStack.push(slide);
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} else {
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// add to vertical stack
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sectionStack[sectionStack.length-1].push(slide);
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}
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for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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lastIndex = separatorRegex.lastIndex;
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wasHorizontal = isHorizontal;
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}
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section = sections[j];
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// add the remaining slide
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(wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1]).push(markdown.substring(lastIndex));
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if( section.getAttribute('data-markdown').length ) {
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// flatten the hierarchical stack, and insert <section data-markdown> tags
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for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
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// vertical
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if( sectionStack[k].propertyIsEnumerable( length ) && typeof sectionStack[k].splice === 'function' ) {
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markdownSections += '<section '+ attributes +'>' +
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'<section data-markdown>' + sectionStack[k].map( twrap ).join( '</section><section data-markdown>' ) + '</section>' +
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'</section>';
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} else {
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markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
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}
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}
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var xhr = new XMLHttpRequest(),
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url = section.getAttribute('data-markdown');
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return markdownSections;
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};
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datacharset = section.getAttribute('data-charset');
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// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
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if (datacharset != null && datacharset != '') {
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xhr.overrideMimeType('text/html; charset=' + datacharset);
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}
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var queryExternalMarkdown = function() {
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xhr.onreadystatechange = function () {
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if( xhr.readyState === 4 ) {
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if (xhr.status >= 200 && xhr.status < 300) {
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section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
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} else {
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section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the HTTP status ' + xhr.status +
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'. Check your browser\'s JavaScript console for more details.' +
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'<p>Remember that you need to serve the presentation HTML from a HTTP server and the Markdown file must be there too.</p></section>';
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}
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}
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};
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var sections = document.querySelectorAll( '[data-markdown]'),
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section;
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xhr.open('GET', url, false);
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try {
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xhr.send();
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} catch (e) {
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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);
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}
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for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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} else if( section.getAttribute('data-separator') ) {
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section = sections[j];
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var markdown = stripLeadingWhitespace(section);
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section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
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if( section.getAttribute( 'data-markdown' ).length ) {
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}
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}
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var xhr = new XMLHttpRequest(),
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url = section.getAttribute( 'data-markdown' );
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};
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datacharset = section.getAttribute( 'data-charset' );
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var queryMarkdownSlides = function() {
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// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
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if( datacharset != null && datacharset != '' ) {
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xhr.overrideMimeType( 'text/html; charset=' + datacharset );
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}
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var sections = document.querySelectorAll( '[data-markdown]');
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xhr.onreadystatechange = function() {
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if( xhr.readyState === 4 ) {
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if ( xhr.status >= 200 && xhr.status < 300 ) {
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section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
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}
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else {
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section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the HTTP status ' + xhr.status +
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'. Check your browser\'s JavaScript console for more details.' +
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'<p>Remember that you need to serve the presentation HTML from a HTTP server and the Markdown file must be there too.</p></section>';
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}
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}
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};
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for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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xhr.open( 'GET', url, false );
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makeHtml(sections[j]);
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try {
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xhr.send();
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}
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catch ( e ) {
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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 );
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}
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}
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} else if( section.getAttribute( 'data-separator' ) ) {
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};
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var markdown = stripLeadingWhitespace( section );
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section.outerHTML = slidifyMarkdown( markdown, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
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var makeHtml = function(section) {
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}
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}
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var notes = section.querySelector( 'aside.notes' );
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};
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var markdown = stripLeadingWhitespace(section);
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var queryMarkdownSlides = function() {
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section.innerHTML = marked(markdown);
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var sections = document.querySelectorAll( '[data-markdown]');
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if( notes ) {
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section.appendChild( notes );
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}
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for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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};
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makeHtml( sections[j] );
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querySlidingMarkdown();
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}
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queryMarkdownSlides();
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};
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var makeHtml = function( section ) {
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var notes = section.querySelector( 'aside.notes' );
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var markdown = stripLeadingWhitespace( section );
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section.innerHTML = marked( markdown );
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if( notes ) {
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section.appendChild( notes );
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}
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};
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queryExternalMarkdown();
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queryMarkdownSlides();
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})();
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