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update markdown plugin formatting to match reveal.js core

This commit is contained in:
Hakim El Hattab 2013-08-23 17:49:19 -04:00
parent f215528575
commit b968dfef15
1 changed files with 170 additions and 159 deletions
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329
plugin/markdown/markdown.js
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@ -2,219 +2,230 @@
// Modified by Hakim to handle Markdown indented with tabs // Modified by Hakim to handle Markdown indented with tabs
(function(){ (function(){
if( typeof marked === 'undefined' ) { if( typeof marked === 'undefined' ) {
throw 'The reveal.js Markdown plugin requires marked to be loaded'; throw 'The reveal.js Markdown plugin requires marked to be loaded';
} }
if (typeof hljs !== 'undefined') { if( typeof hljs !== 'undefined' ) {
marked.setOptions({ marked.setOptions({
highlight: function (lang, code) { highlight: function( lang, code ) {
return hljs.highlightAuto(lang, code).value; return hljs.highlightAuto( lang, code ).value;
} }
}); });
} }
var stripLeadingWhitespace = function(section) { var stripLeadingWhitespace = function( section ) {
var template = section.querySelector( 'script' ); var template = section.querySelector( 'script' );
// strip leading whitespace so it isn't evaluated as code // strip leading whitespace so it isn't evaluated as code
var text = ( template || section ).textContent; var text = ( template || section ).textContent;
var leadingWs = text.match(/^\n?(\s*)/)[1].length, var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
leadingTabs = text.match(/^\n?(\t*)/)[1].length; leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
if( leadingTabs > 0 ) { if( leadingTabs > 0 ) {
text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' ); text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
} }
else if( leadingWs > 1 ) { else if( leadingWs > 1 ) {
text = text.replace( new RegExp('\\n? {' + leadingWs + '}','g'), '\n' ); text = text.replace( new RegExp('\\n? {' + leadingWs + '}','g'), '\n' );
} }
return text; return text;
}; };
var twrap = function(el) { var twrap = function( el ) {
var content = el.content || el;
content += el.asideContent ? ('<aside class="notes" data-markdown>' + el.asideContent + '</aside>') : '';
return '<script type="text/template">' + content + '</script>';
};
var getForwardedAttributes = function(section) { var content = el.content || el;
var attributes = section.attributes;
var result = [];
for( var i = 0, len = attributes.length; i < len; i++ ) { if( el.asideContent ) {
var name = attributes[i].name, content += '<aside class="notes" data-markdown>' + el.asideContent + '</aside>';
value = attributes[i].value; }
// disregard attributes that are used for markdown loading/parsing return '<script type="text/template">' + content + '</script>';
if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
if( value ) { };
result.push( name + '=' + value );
}
else {
result.push( name );
}
}
return result.join( ' ' ); var getForwardedAttributes = function( section ) {
};
var slidifyMarkdown = function(markdown, separator, vertical, notes, attributes) { var attributes = section.attributes;
var result = [];
separator = separator || '^\n---\n$'; for( var i = 0, len = attributes.length; i < len; i++ ) {
notes = notes || 'note:'; var name = attributes[i].name,
value = attributes[i].value;
var separatorRegex = new RegExp( separator + ( vertical ? '|' + vertical : '' ), 'mg' ), // disregard attributes that are used for markdown loading/parsing
horizontalSeparatorRegex = new RegExp( separator ), if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
notesSeparatorRegex = new RegExp( notes, 'mgi' ),
matches,
noteMatch,
lastIndex = 0,
isHorizontal,
wasHorizontal = true,
content,
asideContent,
slide,
sectionStack = [],
markdownSections = '';
// iterate until all blocks between separators are stacked up if( value ) {
while( matches = separatorRegex.exec( markdown ) ) { result.push( name + '=' + value );
asideContent = null; }
else {
result.push( name );
}
}
// determine direction (horizontal by default) return result.join( ' ' );
isHorizontal = horizontalSeparatorRegex.test( matches[0] );
if( !isHorizontal && wasHorizontal ) { };
// create vertical stack
sectionStack.push( [] );
}
// pluck slide content from markdown input var slidifyMarkdown = function( markdown, separator, vertical, notes, attributes ) {
content = markdown.substring( lastIndex, matches.index );
noteMatch = content.split( notesSeparatorRegex );
if( noteMatch.length === 2 ) { separator = separator || '^\n---\n$';
content = noteMatch[0]; notes = notes || 'note:';
asideContent = noteMatch[1].trim();
}
slide = { var separatorRegex = new RegExp( separator + ( vertical ? '|' + vertical : '' ), 'mg' ),
content: content, horizontalSeparatorRegex = new RegExp( separator ),
asideContent: asideContent || "" notesSeparatorRegex = new RegExp( notes, 'mgi' ),
}; matches,
noteMatch,
lastIndex = 0,
isHorizontal,
wasHorizontal = true,
content,
asideContent,
slide,
sectionStack = [],
markdownSections = '';
if( isHorizontal && wasHorizontal ) { // iterate until all blocks between separators are stacked up
// add to horizontal stack while( matches = separatorRegex.exec( markdown ) ) {
sectionStack.push(slide); asideContent = null;
} else {
// add to vertical stack
sectionStack[sectionStack.length-1].push(slide);
}
lastIndex = separatorRegex.lastIndex; // determine direction (horizontal by default)
wasHorizontal = isHorizontal; isHorizontal = horizontalSeparatorRegex.test( matches[0] );
}
// add the remaining slide if( !isHorizontal && wasHorizontal ) {
(wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1]).push(markdown.substring(lastIndex)); // create vertical stack
sectionStack.push( [] );
}
// flatten the hierarchical stack, and insert <section data-markdown> tags // pluck slide content from markdown input
for( var k = 0, klen = sectionStack.length; k < klen; k++ ) { content = markdown.substring( lastIndex, matches.index );
// vertical noteMatch = content.split( notesSeparatorRegex );
if( sectionStack[k].propertyIsEnumerable(length) && typeof sectionStack[k].splice === 'function' ) {
markdownSections += '<section '+ attributes +'>' +
'<section data-markdown>' + sectionStack[k].map(twrap).join('</section><section data-markdown>') + '</section>' +
'</section>';
} else {
markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
}
}
return markdownSections; if( noteMatch.length === 2 ) {
}; content = noteMatch[0];
asideContent = noteMatch[1].trim();
}
var querySlidingMarkdown = function() { slide = {
content: content,
asideContent: asideContent || ''
};
var sections = document.querySelectorAll( '[data-markdown]'), if( isHorizontal && wasHorizontal ) {
section; // add to horizontal stack
sectionStack.push(slide);
} else {
// add to vertical stack
sectionStack[sectionStack.length-1].push(slide);
}
for( var j = 0, jlen = sections.length; j < jlen; j++ ) { lastIndex = separatorRegex.lastIndex;
wasHorizontal = isHorizontal;
}
section = sections[j]; // add the remaining slide
(wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1]).push(markdown.substring(lastIndex));
if( section.getAttribute('data-markdown').length ) { // flatten the hierarchical stack, and insert <section data-markdown> tags
for( var k = 0, klen = sectionStack.length; k < klen; k++ ) {
// vertical
if( sectionStack[k].propertyIsEnumerable( length ) && typeof sectionStack[k].splice === 'function' ) {
markdownSections += '<section '+ attributes +'>' +
'<section data-markdown>' + sectionStack[k].map( twrap ).join( '</section><section data-markdown>' ) + '</section>' +
'</section>';
} else {
markdownSections += '<section '+ attributes +' data-markdown>' + twrap( sectionStack[k] ) + '</section>';
}
}
var xhr = new XMLHttpRequest(), return markdownSections;
url = section.getAttribute('data-markdown'); };
datacharset = section.getAttribute('data-charset'); var queryExternalMarkdown = function() {
// 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 () { var sections = document.querySelectorAll( '[data-markdown]'),
if( xhr.readyState === 4 ) { section;
if (xhr.status >= 200 && xhr.status < 300) {
section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
} else {
section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the 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 and the Markdown file must be there too.</p></section>';
}
}
};
xhr.open('GET', url, false); for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
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 = sections[j];
var markdown = stripLeadingWhitespace(section); if( section.getAttribute( 'data-markdown' ).length ) {
section.outerHTML = slidifyMarkdown( markdown, section.getAttribute('data-separator'), section.getAttribute('data-vertical'), section.getAttribute('data-notes'), getForwardedAttributes(section) );
} var xhr = new XMLHttpRequest(),
} url = section.getAttribute( 'data-markdown' );
}; datacharset = section.getAttribute( 'data-charset' );
var queryMarkdownSlides = function() { // see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
if( datacharset != null && datacharset != '' ) {
xhr.overrideMimeType( 'text/html; charset=' + datacharset );
}
var sections = document.querySelectorAll( '[data-markdown]'); xhr.onreadystatechange = function() {
if( xhr.readyState === 4 ) {
if ( xhr.status >= 200 && xhr.status < 300 ) {
section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
}
else {
section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the 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 and the Markdown file must be there too.</p></section>';
}
}
};
for( var j = 0, jlen = sections.length; j < jlen; j++ ) { xhr.open( 'GET', url, false );
makeHtml(sections[j]); 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' ) ) {
}; var markdown = stripLeadingWhitespace( section );
section.outerHTML = slidifyMarkdown( markdown, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
var makeHtml = function(section) { }
}
var notes = section.querySelector( 'aside.notes' ); };
var markdown = stripLeadingWhitespace(section); var queryMarkdownSlides = function() {
section.innerHTML = marked(markdown); var sections = document.querySelectorAll( '[data-markdown]');
if( notes ) { for( var j = 0, jlen = sections.length; j < jlen; j++ ) {
section.appendChild( notes );
}
}; makeHtml( sections[j] );
querySlidingMarkdown(); }
queryMarkdownSlides(); };
var makeHtml = function( section ) {
var notes = section.querySelector( 'aside.notes' );
var markdown = stripLeadingWhitespace( section );
section.innerHTML = marked( markdown );
if( notes ) {
section.appendChild( notes );
}
};
queryExternalMarkdown();
queryMarkdownSlides();
})(); })();