reader.onload = function(e) {
delete reader.onload;
var filename = Path.join(StartupState.project("root"), item.name);
var file = FileSystem.getFileForPath(filename);
var ext = Path.extname(filename).toLowerCase();
// Create a Filer Buffer, and determine the proper encoding. We
// use the extension, and also the OS provided mime type for clues.
var buffer = new Filer.Buffer(e.target.result);
var utf8FromExt = Content.isUTF8Encoded(ext);
var utf8FromOS = Content.isTextType(item.type);
var encoding = utf8FromExt || utf8FromOS ? 'utf8' : null;
if(encoding === 'utf8') {
buffer = buffer.toString();
}
// Special-case .zip files, so we can offer to extract the contents
if(ext === ".zip") {
handleZipFile(deferred, file, filename, buffer, encoding);
} else if(ext === ".tar") {
handleTarFile(deferred, file, filename, buffer, encoding);
} else {
handleRegularFile(deferred, file, filename, buffer, encoding);
}
};
/**
* Process known files into Blob URLs, processing known types first
* so they are rendered and rewritten (e.g., paths->blob urls) properly.
*/
function handleFile(path, data, callback) {
var ext = Path.extname(path);
var mimeType = Content.mimeFromExt(ext);
// NOTE: we call toString() on `data` so that only utf8 data is used if a
// buffer was passed in as a parameter and should be read as utf8.
if(Content.isUTF8Encoded(ext)) {
data = data.toString();
}
function rewriteUrl() {
if(Content.isHTML(ext)) {
HTMLRewriter.rewrite(path, data, callback);
} else if(Content.isCSS(ext)) {
CSSRewriter.rewrite(path, data, function(err, css) {
if(err) {
console.error("[Handler.handleFile() Error", path, err);
callback(err);
return;
}
UrlCache.createURL(path, css, mimeType, callback);
});
} else {
UrlCache.createURL(path, data, mimeType, callback);
}
}
// If there's a transform needed for this file, do it first
Transforms.applyTransform(path, data, function(err) {
if(err) {
return callback(err);
}
rewriteUrl();
});
}