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on-the-fly.js
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// Generated by CoffeeScript 2.3.0
(function() {
/*
* Generic server for file conversion on the fly
*/
var Path, bunyan, coffee, etag, fs, http, less, log, md, server, url;
http = require('http');
url = require('url');
fs = require('fs');
less = require('less');
Path = require('path');
md = require('marked');
coffee = require('coffeescript');
etag = require('etag');
require('systemd');
require('autoquit');
bunyan = require('bunyan');
log = bunyan.createLogger({
name: 'on-the-fly',
streams: [
{
type: 'rotating-file',
period: '1w',
count: 4,
path: '/var/log/on-the-fly.log',
level: 'debug'
}
]
});
server = http.createServer(function(req, res) {
var file, match, parsedurl, pretty, suffix, tag;
parsedurl = url.parse(req.url, true);
file = parsedurl.pathname;
log.info(file);
pretty = parsedurl.query.pretty != null;
if (!(match = file.match(/\.(\w+)$/))) {
res.writeHead(501, 'Not Implemented');
return res.end(`No filename suffix found in "${file}"`);
}
suffix = match[1];
try {
tag = etag(fs.statSync(file));
} catch (error) {
res.writeHead(404, 'File not found');
return res.end(`${file} not found`);
}
res.setHeader('Etag', tag);
if (req.headers['if-none-match'] === tag) {
res.writeHead(304, 'Not Modified');
return res.end();
} else {
return fs.readFile(file, 'utf-8', function(err, data) {
var result;
if (err) {
log.error(err);
res.writeHead(404, 'File not found');
return res.end(`${err.message}`);
} else {
switch (suffix) {
case 'less':
return less.render(data, {
paths: [Path.dirname(file)],
compress: !pretty
}, function(e, output) {
if (e) {
res.writeHead(500, 'Syntax Error');
return res.end(e.message);
} else {
res.writeHead(200, {
'Content-Type': 'text/css; charset=utf-8'
});
return res.end(output.css);
}
});
case 'markdown':
case 'md':
return md(data, function(err, html) {
if (err) {
res.writeHead(500, 'Syntax Error');
return res.end(err.toString());
} else {
res.writeHead(200, {
'Content-TYpe': 'text/html'
});
return res.end(`<html>\n <head>\n <title>${file}</title>\n </head>\n <body>\n ${html}\n </body>\n</html>`);
}
});
case 'coffee':
try {
result = coffee.compile(data);
} catch (error) {
err = error;
res.writeHead(500, 'Syntax Error');
return res.end(`Syntax Error: ${err.message} on line ${err.location.first_line}`);
}
res.writeHead(200, {
'Content-TYpe': 'application/x-javascript'
});
return res.end(result);
default:
res.writeHead(501, 'Not Implemented');
return res.end(`Unknown file suffix of "${suffix}"`);
}
}
});
}
});
// server.listen '/var/run/www/on-the-fly.sock'
// server.listen 8000, 'localhost'
server.autoQuit({
timeOut: 60,
exitFn: function() {
log.info('server autoquit');
return process.exit(0);
}
});
log.info('server started');
if (process.env.LISTEN_PID > 0) {
server.listen('systemd');
} else {
server.listen(8000, 'localhost');
}
}).call(this);