37 lines
961 B
JavaScript
37 lines
961 B
JavaScript
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'use strict';
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var utils = require('./utils');
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/**
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* An object to write any content to an Uint8Array.
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* @constructor
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* @param {number} length The length of the array.
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*/
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var Uint8ArrayWriter = function(length) {
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this.data = new Uint8Array(length);
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this.index = 0;
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};
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Uint8ArrayWriter.prototype = {
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/**
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* Append any content to the current array.
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* @param {Object} input the content to add.
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*/
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append: function(input) {
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if (input.length !== 0) {
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// with an empty Uint8Array, Opera fails with a "Offset larger than array size"
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input = utils.transformTo("uint8array", input);
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this.data.set(input, this.index);
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this.index += input.length;
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}
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},
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/**
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* Finalize the construction an return the result.
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* @return {Uint8Array} the generated array.
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*/
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finalize: function() {
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return this.data;
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}
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};
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module.exports = Uint8ArrayWriter;
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