rc-web@69: var handlebars = require('handlebars'),
rc-web@69:   async = require('async'),
rc-web@69:   cheerio = require('cheerio'),
rc-web@69:   marked = require('marked'),
rc-web@69:   path = require('path'),
rc-web@69:   fs = require('fs'),
rc-web@69:   _ = require('underscore'),
rc-web@69:   highlight = require('highlight.js');
rc-web@69: 
rc-web@69: var config = {
rc-web@69:   addIdsToHeadings: true,
rc-web@69:   gfm: true, //github flavored markdown
rc-web@69:   highlight: function(code, lang) {
rc-web@69:     return highlight.highlight('javascript', code).value;
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: var jqueryPath = './lib/jquery.js',
rc-web@69:     asyncTolkens = {},
rc-web@69:     markdownCallbacks = [];
rc-web@69: 
rc-web@69: var transforms = {};
rc-web@69: 
rc-web@69: function addTransform(name, callback) {
rc-web@69:   transforms[name] = callback;
rc-web@69: }
rc-web@69: 
rc-web@69: addTransform('html', function(buffer, complete, context, data) {
rc-web@69:   return complete(buffer.toString());
rc-web@69: });
rc-web@69: 
rc-web@69: addTransform('md', function(buffer, complete, context, data) {
rc-web@69:   var html = marked(buffer.toString(), {
rc-web@69:     gfm: config.gfm,
rc-web@69:     highlight: config.highlight
rc-web@69:   });
rc-web@69:   async.series(_.map(markdownCallbacks, function(callback) {
rc-web@69:     return function(next) {
rc-web@69:       callback(html, function(modifiedHTML) {
rc-web@69:         html = modifiedHTML;
rc-web@69:         next();
rc-web@69:       });
rc-web@69:     }
rc-web@69:   }), function() {
rc-web@69:     complete(html);
rc-web@69:   });    
rc-web@69: });
rc-web@69: 
rc-web@69: addTransform('hbs', function(buffer, complete, context, data) {
rc-web@69:   var output = handlebars.compile(buffer.toString(), {
rc-web@69:     data: true
rc-web@69:   })(context, {
rc-web@69:     data: data
rc-web@69:   });
rc-web@69:   var filteredAsyncTolkens = {};
rc-web@69:   _.each(asyncTolkens, function(tolkenData, tolken) {
rc-web@69:     if (data.file === tolkenData.file) {
rc-web@69:       filteredAsyncTolkens[tolken] = tolkenData;
rc-web@69:     }
rc-web@69:   });
rc-web@69:   if (!_.keys(filteredAsyncTolkens).length) {
rc-web@69:     complete(output);
rc-web@69:   } else {
rc-web@69:     async.series(_.map(filteredAsyncTolkens, function(tolkenData, tolken) {
rc-web@69:       return function(next) {
rc-web@69:         var args = tolkenData.args;
rc-web@69:         args.push(function(callbackOutput) {
rc-web@69:           output = output.replace(tolken, callbackOutput.toString());
rc-web@69:           next();
rc-web@69:         });
rc-web@69:         tolkenData.callback.apply(tolkenData.callback, args);
rc-web@69:       };
rc-web@69:     }), function() {
rc-web@69:       complete(output);
rc-web@69:     });
rc-web@69:   }
rc-web@69: });
rc-web@69: 
rc-web@69: function $(html, callback) {
rc-web@69:   callback(cheerio.load(html));
rc-web@69: }
rc-web@69: 
rc-web@69: function modifyDocumentFragment(html, callback, next) {
rc-web@69:   $(html, function($) {
rc-web@69:     callback($);
rc-web@69:     next($.html());
rc-web@69:   });
rc-web@69: }
rc-web@69: 
rc-web@69: function removeOuterBodyTag(html) {
rc-web@69:   return html.replace(/^\s*\<body\>/, '').replace(/\<\/body\>\s*$/, '');
rc-web@69: }
rc-web@69: 
rc-web@69: handlebars.registerAsyncHelper = function(name, callback) {
rc-web@69:   handlebars.registerHelper(name, function() {
rc-web@69:     var tolken = String(new Date().getTime() + Math.random());
rc-web@69:     var args = _.toArray(arguments),
rc-web@69:         data = args[args.length - 1].data;
rc-web@69:     asyncTolkens[tolken] = {
rc-web@69:       file: data.file,
rc-web@69:       args: args,
rc-web@69:       callback: callback
rc-web@69:     };
rc-web@69:     return tolken;
rc-web@69:   });
rc-web@69: };
rc-web@69: 
rc-web@69: handlebars.registerHelper('require', function(file, options) {
rc-web@69:   var filePath = path.join(path.dirname(options.data.file), file);
rc-web@69:   require(filePath)(module.exports);
rc-web@69:   return '';
rc-web@69: });
rc-web@69: 
rc-web@69: handlebars.registerAsyncHelper('include', function(file, options, callback) {
rc-web@69:   var filePath = path.join(path.dirname(options.data.file), file);
rc-web@69:   transform(filePath, function(fileData) {
rc-web@69:     var selector = options.hash.select;
rc-web@69:     if (selector) {
rc-web@69:       $(fileData.toString(), function($) {
rc-web@69:         var generatedHTML = '';
rc-web@69:         $(selector).each(function() {
rc-web@69:           // make more like a regular dom object
rc-web@69:           this.attributes = this[0].attribs;
rc-web@69:           this.id = this[0].attribs.id;
rc-web@69:           this.tagName = this[0].name;
rc-web@69:           this.innerHTML = this.html();
rc-web@69:           generatedHTML += options.fn(this);
rc-web@69:         });
rc-web@69:         callback(generatedHTML);
rc-web@69:       });
rc-web@69:     } else {
rc-web@69:       callback(fileData.toString());
rc-web@69:     }
rc-web@69:   }, options.hash, options.data);
rc-web@69: });
rc-web@69: 
rc-web@69: function transform(source, callback, options) {
rc-web@69:   fs.readFile(source, function(err, data) {
rc-web@69:     if (err) {
rc-web@69:       console.trace();
rc-web@69:       throw err;
rc-web@69:     }
rc-web@69:     var extensions = source.split('/').pop().split('.');
rc-web@69:     var callbacks = _.filter(extensions, function(extension) {
rc-web@69:       return extension in transforms;
rc-web@69:     }).map(function(extension) {
rc-web@69:       return function(next) {
rc-web@69:         transforms[extension](data, next, options || {}, {
rc-web@69:           file: source
rc-web@69:         });
rc-web@69:       };
rc-web@69:     });
rc-web@69:     async.series(callbacks, callback);
rc-web@69:   });
rc-web@69: }
rc-web@69: 
rc-web@69: function onMarkdown(callback) {
rc-web@69:   markdownCallbacks.push(callback);
rc-web@69: }
rc-web@69: 
rc-web@69: onMarkdown(function(html, next) {
rc-web@69:   if (config.addIdsToHeadings) {
rc-web@69:     modifyDocumentFragment(html, function($) {
rc-web@69:       if (config.addIdsToHeadings) {
rc-web@69:         addIdsToHeadings($);
rc-web@69:       }
rc-web@69:     }, next);
rc-web@69:   } else {
rc-web@69:     next(html);
rc-web@69:   }
rc-web@69: });
rc-web@69: 
rc-web@69: function addIdsToHeadings($) {
rc-web@69:   $('h1,h2,h3,h4,h5,h6').each(function() {
rc-web@69:     var text = $(this).html().split('<').shift();
rc-web@69:     var id = text.replace(/(^\s+|\s+$)/g, '').replace(/[\s]+/g, '-').replace(/([a-z])([A-Z])/g, function() {
rc-web@69:       return arguments[1] + '-' + arguments[2].toLowerCase();
rc-web@69:     }).toLowerCase();
rc-web@69:     if (id.match(/^\s+$/) || !id) {
rc-web@69:       return;
rc-web@69:     }
rc-web@69:     $(this).attr('id', id);
rc-web@69:   });
rc-web@69: }
rc-web@69: 
rc-web@69: module.exports = {
rc-web@69:   config: config,
rc-web@69:   transform: transform,
rc-web@69:   handlebars: handlebars,
rc-web@69:   $: $,
rc-web@69:   modifyDocumentFragment: modifyDocumentFragment,
rc-web@69:   onMarkdown: onMarkdown,
rc-web@69:   addTransform: addTransform
rc-web@69: };