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37b7ea3b0a
This is a small refactoring commit that extracts the MIME related function from utils.js into a new file called mime.js, and stores the default image MIME type there as a constant, to avoid duplicating it in multiple parts of the code. Change-Type: patch Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
/*
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* Copyright 2016 resin.io
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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const Bluebird = require('bluebird');
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/**
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* @summary Extract the data of a readable stream
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* @function
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* @public
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*
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* @description
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* You should be careful when using this function, since you can only
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* extract files that are not bigger than the available computer memory.
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*
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* @param {StreamReadable} stream - stream
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* @fulfil {Buffer} - data
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* @returns {Promise}
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*
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* @example
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* const stream = fs.createReadStream('./foo/bar');
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*
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* utils.extractStream(stream).then((data) => {
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* console.log(data.toString());
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* });
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*/
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exports.extractStream = (stream) => {
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return new Bluebird((resolve, reject) => {
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const chunks = [];
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stream.on('data', (chunk) => {
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chunks.push(chunk);
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});
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stream.on('error', reject);
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stream.on('end', () => {
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resolve(Buffer.concat(chunks));
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});
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});
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};
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