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23 lines
618 B
JavaScript
23 lines
618 B
JavaScript
'use strict';
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module.exports = getBufferPadded;
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/**
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* Pad the buffer to the next 4-byte boundary to ensure proper alignment for the section that follows.
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*
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* @param {Buffer} buffer The buffer.
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* @returns {Buffer} The padded buffer.
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*
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* @private
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*/
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function getBufferPadded(buffer) {
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const boundary = 4;
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const byteLength = buffer.length;
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const remainder = byteLength % boundary;
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if (remainder === 0) {
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return buffer;
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}
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const padding = (remainder === 0) ? 0 : boundary - remainder;
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const emptyBuffer = Buffer.alloc(padding);
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return Buffer.concat([buffer, emptyBuffer]);
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}
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