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Mini Shell
'use strict';
const pump = require('pump');
const bufferStream = require('./buffer-stream');
class MaxBufferError extends Error {
constructor() {
super('maxBuffer exceeded');
this.name = 'MaxBufferError';
}
}
function getStream(inputStream, options) {
if (!inputStream) {
return Promise.reject(new Error('Expected a stream'));
}
options = Object.assign({maxBuffer: Infinity}, options);
const {maxBuffer} = options;
let stream;
return new Promise((resolve, reject) => {
const rejectPromise = error => {
if (error) { // A null check
error.bufferedData = stream.getBufferedValue();
}
reject(error);
};
stream = pump(inputStream, bufferStream(options), error => {
if (error) {
rejectPromise(error);
return;
}
resolve();
});
stream.on('data', () => {
if (stream.getBufferedLength() > maxBuffer) {
rejectPromise(new MaxBufferError());
}
});
}).then(() => stream.getBufferedValue());
}
module.exports = getStream;
module.exports.buffer = (stream, options) => getStream(stream, Object.assign({}, options, {encoding: 'buffer'}));
module.exports.array = (stream, options) => getStream(stream, Object.assign({}, options, {array: true}));
module.exports.MaxBufferError = MaxBufferError;
Zerion Mini Shell 1.0