62 lines
No EOL
11 KiB
JavaScript
62 lines
No EOL
11 KiB
JavaScript
//
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// showdown.js -- A javascript port of Markdown.
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//
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// Copyright (c) 2007 John Fraser.
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//
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// Original Markdown Copyright (c) 2004-2005 John Gruber
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// <http://daringfireball.net/projects/markdown/>
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//
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// Redistributable under a BSD-style open source license.
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// See license.txt for more information.
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//
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// The full source distribution is at:
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//
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// A A L
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// T C A
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// T K B
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//
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// <http://www.attacklab.net/>
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//
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//
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// Wherever possible, Showdown is a straight, line-by-line port
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// of the Perl version of Markdown.
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//
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// This is not a normal parser design; it's basically just a
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// series of string substitutions. It's hard to read and
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// maintain this way, but keeping Showdown close to the original
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// design makes it easier to port new features.
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//
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// More importantly, Showdown behaves like markdown.pl in most
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// edge cases. So web applications can do client-side preview
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// in Javascript, and then build identical HTML on the server.
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//
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// This port needs the new RegExp functionality of ECMA 262,
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// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
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// should do fine. Even with the new regular expression features,
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// We do a lot of work to emulate Perl's regex functionality.
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// The tricky changes in this file mostly have the "attacklab:"
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// label. Major or self-explanatory changes don't.
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//
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// Smart diff tools like Araxis Merge will be able to match up
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// this file with markdown.pl in a useful way. A little tweaking
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// helps: in a copy of markdown.pl, replace "#" with "//" and
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// replace "$text" with "text". Be sure to ignore whitespace
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// and line endings.
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//
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//
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// Showdown usage:
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//
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// var text = "Markdown *rocks*.";
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//
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// var converter = new Showdown.converter();
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// var html = converter.makeHtml(text);
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//
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// alert(html);
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//
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// Note: move the sample code to the bottom of this
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// file before uncommenting it.
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//
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//
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// Showdown namespace
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//
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var Showdown={extensions:{}},forEach=Showdown.forEach=function(a,b){if(typeof a.forEach=="function")a.forEach(b);else{var c,d=a.length;for(c=0;c<d;c++)b(a[c],c,a)}},stdExtName=function(a){return a.replace(/[_-]||\s/g,"").toLowerCase()};Showdown.converter=function(a){var b,c,d,e=0,f=[],g=[];if(typeof module!="undefind"&&typeof exports!="undefined"&&typeof require!="undefind"){var h=require("fs");if(h){var i=h.readdirSync((__dirname||".")+"/extensions").filter(function(a){return~a.indexOf(".js")}).map(function(a){return a.replace(/\.js$/,"")});Showdown.forEach(i,function(a){var b=stdExtName(a);Showdown.extensions[b]=require("./extensions/"+a)})}}this.makeHtml=function(a){return b={},c={},d=[],a=a.replace(/~/g,"~T"),a=a.replace(/\$/g,"~D"),a=a.replace(/\r\n/g,"\n"),a=a.replace(/\r/g,"\n"),a="\n\n"+a+"\n\n",a=M(a),a=a.replace(/^[ \t]+$/mg,""),Showdown.forEach(f,function(b){a=k(b,a)}),a=z(a),a=m(a),a=l(a),a=o(a),a=K(a),a=a.replace(/~D/g,"$$"),a=a.replace(/~T/g,"~"),Showdown.forEach(g,function(b){a=k(b,a)}),a};if(a&&a.extensions){var j=this;Showdown.forEach(a.extensions,function(a){typeof a=="string"&&(a=Showdown.extensions[stdExtName(a)]);if(typeof a!="function")throw"Extension '"+a+"' could not be loaded. 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