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/* eslint-disable no-underscore-dangle */
'use strict';
const OctetStreamParser = require('../parsers/OctetStream');
// the `options` is also available through the `options` / `formidable.options`
module.exports = function plugin(formidable, options) {
// the `this` context is always formidable, as the first argument of a plugin
// but this allows us to customize/test each plugin
/* istanbul ignore next */
const self = this || formidable;
if (/octet-stream/i.test(self.headers['content-type'])) {
init.call(self, self, options);
}
return self;
};
// Note that it's a good practice (but it's up to you) to use the `this.options` instead
// of the passed `options` (second) param, because when you decide
// to test the plugin you can pass custom `this` context to it (and so `this.options`)
function init(_self, _opts) {
this.type = 'octet-stream';
const originalFilename = this.headers['x-file-name'];
const mimetype = this.headers['content-type'];
const thisPart = {
originalFilename,
mimetype,
};
const newFilename = this._getNewName(thisPart);
const filepath = this._joinDirectoryName(newFilename);
const file = this._newFile({
newFilename,
filepath,
originalFilename,
mimetype,
});
this.emit('fileBegin', originalFilename, file);
file.open();
this.openedFiles.push(file);
this._flushing += 1;
this._parser = new OctetStreamParser(this.options);
// Keep track of writes that haven't finished so we don't emit the file before it's done being written
let outstandingWrites = 0;
this._parser.on('data', (buffer) => {
this.pause();
outstandingWrites += 1;
file.write(buffer, () => {
outstandingWrites -= 1;
this.resume();
if (this.ended) {
this._parser.emit('doneWritingFile');
}
});
});
this._parser.on('end', () => {
this._flushing -= 1;
this.ended = true;
const done = () => {
file.end(() => {
this.emit('file', 'file', file);
this._maybeEnd();
});
};
if (outstandingWrites === 0) {
done();
} else {
this._parser.once('doneWritingFile', done);
}
});
return this;
}
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