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/*global module, process*/
var Buffer = require('safe-buffer').Buffer;
var Stream = require('stream');
var util = require('util');
function DataStream(data) {
this.buffer = null;
this.writable = true;
this.readable = true;
// No input
if (!data) {
this.buffer = Buffer.alloc(0);
return this;
}
// Stream
if (typeof data.pipe === 'function') {
this.buffer = Buffer.alloc(0);
data.pipe(this);
return this;
}
// Buffer or String
// or Object (assumedly a passworded key)
if (data.length || typeof data === 'object') {
this.buffer = data;
this.writable = false;
process.nextTick(function () {
this.emit('end', data);
this.readable = false;
this.emit('close');
}.bind(this));
return this;
}
throw new TypeError('Unexpected data type ('+ typeof data + ')');
}
util.inherits(DataStream, Stream);
DataStream.prototype.write = function write(data) {
this.buffer = Buffer.concat([this.buffer, Buffer.from(data)]);
this.emit('data', data);
};
DataStream.prototype.end = function end(data) {
if (data)
this.write(data);
this.emit('end', data);
this.emit('close');
this.writable = false;
this.readable = false;
};
module.exports = DataStream;