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