haste-server/lib/static_handler.js
2011-11-18 15:51:38 -05:00

54 lines
1.8 KiB
JavaScript

var url = require('url'); // TODO not needed
var path = require('path');
var fs = require('fs');
var winston = require('winston');
// For serving static assets
var StaticHandler = function(path) {
this.path = path;
this.defaultPath = '/index.html';
};
// Determine the content type for a given extension
StaticHandler.contentTypeFor = function(ext) {
if (ext == '.js') return 'text/javascript';
else if (ext == '.css') return 'text/css';
else if (ext == '.html') return 'text/html';
else if (ext == '.ico') return 'image/ico';
else {
winston.error('unable to determine content type for static asset with extension: ' + ext);
return 'text/plain';
}
};
// Handle a request, and serve back the asset if it exists
StaticHandler.prototype.handle = function(request, response) {
var inc = url.parse(request.url, false);
var filePath = this.path + (inc.pathname == '/' ? this.defaultPath : inc.pathname);
path.exists(filePath, function(exists) {
if (exists) {
fs.readFile(filePath, function(error, content) {
if (error) {
winston.error('unable to read file', { path: filePath, error: error.message });
response.writeHead(500, { 'content-type': 'application/json' });
response.end(JSON.stringify({ message: 'IO: Unable to read file' }));
}
else {
var contentType = StaticHandler.contentTypeFor(path.extname(filePath));
response.writeHead(200, { 'content-type': contentType });
response.end(content, 'utf-8');
}
});
}
else {
winston.warn('file not found', { path: filePath });
response.writeHead(404, { 'content-type': 'application/json' });
response.end(JSON.stringify({ message: 'file not found' }));
}
});
};
module.exports = StaticHandler;