60 lines
1.4 KiB
JavaScript
60 lines
1.4 KiB
JavaScript
'use strict';
|
|
var Promise = require('pinkie-promise');
|
|
var objectAssign = require('object-assign');
|
|
var bufferStream = require('./buffer-stream');
|
|
|
|
function getStream(inputStream, opts) {
|
|
if (!inputStream) {
|
|
return Promise.reject(new Error('Expected a stream'));
|
|
}
|
|
|
|
opts = objectAssign({maxBuffer: Infinity}, opts);
|
|
var maxBuffer = opts.maxBuffer;
|
|
var stream;
|
|
var clean;
|
|
|
|
var p = new Promise(function (resolve, reject) {
|
|
stream = bufferStream(opts);
|
|
inputStream.once('error', error);
|
|
inputStream.pipe(stream);
|
|
|
|
stream.on('data', function () {
|
|
if (stream.getBufferedLength() > maxBuffer) {
|
|
reject(new Error('maxBuffer exceeded'));
|
|
}
|
|
});
|
|
stream.once('error', error);
|
|
stream.on('end', resolve);
|
|
|
|
clean = function () {
|
|
// some streams doesn't implement the stream.Readable interface correctly
|
|
if (inputStream.unpipe) {
|
|
inputStream.unpipe(stream);
|
|
}
|
|
};
|
|
|
|
function error(err) {
|
|
if (err) { // null check
|
|
err.bufferedData = stream.getBufferedValue();
|
|
}
|
|
reject(err);
|
|
}
|
|
});
|
|
|
|
p.then(clean, clean);
|
|
|
|
return p.then(function () {
|
|
return stream.getBufferedValue();
|
|
});
|
|
}
|
|
|
|
module.exports = getStream;
|
|
|
|
module.exports.buffer = function (stream, opts) {
|
|
return getStream(stream, objectAssign({}, opts, {encoding: 'buffer'}));
|
|
};
|
|
|
|
module.exports.array = function (stream, opts) {
|
|
return getStream(stream, objectAssign({}, opts, {array: true}));
|
|
};
|