haste-server/lib/static_handler.js

52 lines
1.6 KiB
JavaScript

var path = require('path');
var fs = require('fs');
var winston = require('winston');
// For serving static assets
var StaticHandler = function(path) {
this.basePath = 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(incPath, response) {
var filePath = this.basePath + (incPath == '/' ? this.defaultPath : incPath);
var _this = this;
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 {
// serve the default route so that pushstate can work if not found
_this.handle('/', response);
}
});
};
module.exports = StaticHandler;