/
snip.js
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/
snip.js
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var redis = require('redis-client')
, nerve = require('nerve')
, sys = require('sys')
, qs = require('querystring')
, cp = require('child_process')
, _ = require('underscore')._;
/* Passes cb to a new instance redis.Client.connect
* but handles error in connecting
* accepts optional errback as second argument
* the callback gets a this.redis representing the redis object
*
* Returns nothing
*/
var withRedis = function( cb ) {
var errback = arguments[1];
var r = redis.createClient();
r.stream.on( 'connect', _.bind( cb, { redis : r } ) );
r.stream.on( "end", function(error) {
if( error ) {
process.stdio.writeError( "Error connecting to Redis database\n" );
if( typeof(errback) === "function" )
errback();
}
});
}
var languages =
[["apacheconf", "ApacheConf"],
["applescript", "AppleScript"],
["as", "ActionScript"],
["as3", "ActionScript 3"],
["basemake", "Makefile"],
["bash", "Bash"],
["bat", "Batchfile"],
["bbcode", "BBCode"],
["befunge", "Befunge"],
["boo", "Boo"],
["brainfuck", "Brainfuck"],
["c", "C"],
["c-objdump", "c-objdump"],
["cheetah", "Cheetah"],
["clojure", "Clojure"],
["common-lisp", "Common Lisp"],
["control", "Debian Control file"],
["cpp", "C++"],
["cpp-objdump", "cpp-objdump"],
["csharp", "C#"],
["css", "CSS"],
["css+django", "CSS+Django/Jinja"],
["css+erb", "CSS+Ruby"],
["css+genshitext", "CSS+Genshi Text"],
["css+mako", "CSS+Mako"],
["css+mako", "CSS+Mako"],
["css+myghty", "CSS+Myghty"],
["css+php", "CSS+PHP"],
["css+smarty", "CSS+Smarty"],
["d", "D"],
["d-objdump", "d-objdump"],
["delphi", "Delphi"],
["diff", "Diff"],
["django", "Django/Jinja"],
["dpatch", "Darcs Patch"],
["dylan", "Dylan"],
["erb", "ERB"],
["erlang", "Erlang"],
["fortran", "Fortran"],
["gas", "GAS"],
["genshi", "Genshi"],
["genshitext", "Genshi Text"],
["gnuplot", "Gnuplot"],
["groff", "Groff"],
["haskell", "Haskell"],
["html", "HTML"],
["html+cheetah", "HTML+Cheetah"],
["html+django", "HTML+Django/Jinja"],
["html+genshi", "HTML+Genshi"],
["html+mako", "HTML+Mako"],
["html+mako", "HTML+Mako"],
["html+myghty", "HTML+Myghty"],
["html+php", "HTML+PHP"],
["html+smarty", "HTML+Smarty"],
["ini", "INI"],
["io", "Io"],
["irc", "IRC logs"],
["java", "Java"],
["js", "JavaScript"],
["js+cheetah", "JavaScript+Cheetah"],
["js+django", "JavaScript+Django/Jinja"],
["js+erb", "JavaScript+Ruby"],
["js+genshitext", "JavaScript+Genshi Text"],
["js+mako", "JavaScript+Mako"],
["js+mako", "JavaScript+Mako"],
["js+myghty", "JavaScript+Myghty"],
["js+php", "JavaScript+PHP"],
["js+smarty", "JavaScript+Smarty"],
["jsp", "Java Server Page"],
["lhs", "Literate Haskell"],
["lighty", "Lighttpd configuration file"],
["llvm", "LLVM"],
["logtalk", "Logtalk"],
["lua", "Lua"],
["make", "Makefile"],
["mako", "Mako"],
["mako", "Mako"],
["matlab", "Matlab"],
["matlabsession", "Matlab session"],
["minid", "MiniD"],
["moocode", "MOOCode"],
["mupad", "MuPAD"],
["myghty", "Myghty"],
["mysql", "MySQL"],
["nasm", "NASM"],
["nginx", "Nginx configuration file"],
["numpy", "NumPy"],
["objdump", "objdump"],
["objective-c", "Objective-C"],
["ocaml", "OCaml"],
["perl", "Perl"],
["php", "PHP"],
["pot", "Gettext Catalog"],
["pov", "POVRay"],
["py3tb", "Python 3.0 Traceback"],
["pycon", "Python console session"],
["pytb", "Python Traceback"],
["python", "Python"],
["python3", "Python 3"],
["raw", "Raw token data"],
["rb", "Ruby"],
["rbcon", "Ruby irb session"],
["redcode", "Redcode"],
["rhtml", "RHTML"],
["rst", "reStructuredText"],
["scala", "Scala"],
["scheme", "Scheme"],
["smalltalk", "Smalltalk"],
["smarty", "Smarty"],
["sourceslist", "Debian Sourcelist"],
["splus", "S"],
["sql", "SQL"],
["sqlite3", "sqlite3con"],
["squidconf", "SquidConf"],
["tcl", "Tcl"],
["tcsh", "Tcsh"],
["tex", "TeX"],
["text", "Text only"],
["trac-wiki", "MoinMoin/Trac Wiki markup"],
["vb.net", "VB.net"],
["vim", "VimL"],
["xml", "XML"],
["xml+cheetah", "XML+Cheetah"],
["xml+django", "XML+Django/Jinja"],
["xml+erb", "XML+Ruby"],
["xml+mako", "XML+Mako"],
["xml+mako", "XML+Mako"],
["xml+myghty", "XML+Myghty"],
["xml+php", "XML+PHP"],
["xml+smarty", "XML+Smarty"],
["xslt", "XSLT"],
["yaml", "YAML"]];
var genLanguageList = function() {
return languages.map( function(lang) {
return '<option value="' + lang[0] + '">' + lang[1] + '</option>';
} );
}
//formHtml
var formHtml = '<form action="/add" method="post">'
+ '<label for="code">Paste code</label><br>'
+ '<textarea name="code" rows="25" cols="80"></textarea><br>'
+ '<label for="language">Language</label>'
+ '<select name="language">'
+ genLanguageList()
+ '</select>'
+ '<input type="submit" value="Paste!" /></form>';
//getPostParams
var getPostParams = function(req, callback){
var body = '';
req.on('data', function(chunk){
body += chunk;
})
.on('end', function() {
var obj = qs.parse( body.replace( /\+/g, ' ' ) ) ;
callback( obj );
});
}
//addSnippet
var addSnippet = function( req, res ) {
getPostParams( req, function( obj ) {
var r = redis.createClient();
r.stream.on( 'connect', function() {
r.incr( 'nextid' , function( err, id ) {
r.set( 'snippet:'+id, JSON.stringify( obj ), function() {
var msg = 'The snippet has been saved at <a href="/'+id+'">'+req.headers.host+'/'+id+'</a>';
res.respond( msg );
} );
} );
} );
});
};
//showSnippet
var showSnippet = function( req, res, id ) {
var r = redis.createClient();
r.stream.on( 'connect', function() {
r.get( 'snippet:'+id, function( err, data ) {
if( !data ) {
res.writeHead( 404 );
res.write( "No such snippet" );
res.end();
return;
}
res.writeHead( 200, { "Content-Type" : "text/html" } );
var obj = JSON.parse( data.toString() );
var shortcode = languages.filter( function(el) {
return el[0] == obj.language;
} ) [0][0];
var pyg = cp.spawn( "pygmentize",
[ "-l", shortcode,
"-f", "html",
"-O", "full,style=pastie",
"-P", "title=Snippet #" + id ] );
pyg.stdout.on( "data", function( coloured ) {
if( coloured )
res.write( coloured );
} );
pyg.on( 'exit', function() {
res.end();
});
pyg.stdin.write( obj.code );
pyg.stdin.end();
r.close();
});
});
}
//create
nerve.create( [
[ /^\/([0-9]+)/, showSnippet ],
[ nerve.post("/add"), addSnippet ],
[ "/", function( req, res ) { res.respond( formHtml ); } ]
]).listen( 8000 );