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66 lines
1.6 KiB
66 lines
1.6 KiB
/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
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/* eslint-disable node/no-deprecated-api */
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var buffer = require('buffer')
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var Buffer = buffer.Buffer
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// alternative to using Object.keys for old browsers
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function copyProps (src, dst) {
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for (var key in src) {
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dst[key] = src[key]
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}
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}
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if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
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module.exports = buffer
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} else {
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// Copy properties from require('buffer')
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copyProps(buffer, exports)
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exports.Buffer = SafeBuffer
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}
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function SafeBuffer (arg, encodingOrOffset, length) {
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return Buffer(arg, encodingOrOffset, length)
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}
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SafeBuffer.prototype = Object.create(Buffer.prototype)
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// Copy static methods from Buffer
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copyProps(Buffer, SafeBuffer)
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SafeBuffer.from = function (arg, encodingOrOffset, length) {
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if (typeof arg === 'number') {
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throw new TypeError('Argument must not be a number')
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}
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return Buffer(arg, encodingOrOffset, length)
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}
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SafeBuffer.alloc = function (size, fill, encoding) {
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if (typeof size !== 'number') {
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throw new TypeError('Argument must be a number')
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}
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var buf = Buffer(size)
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if (fill !== undefined) {
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if (typeof encoding === 'string') {
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buf.fill(fill, encoding)
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} else {
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buf.fill(fill)
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}
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} else {
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buf.fill(0)
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}
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return buf
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}
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SafeBuffer.allocUnsafe = function (size) {
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if (typeof size !== 'number') {
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throw new TypeError('Argument must be a number')
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}
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return Buffer(size)
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}
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SafeBuffer.allocUnsafeSlow = function (size) {
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if (typeof size !== 'number') {
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throw new TypeError('Argument must be a number')
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}
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return buffer.SlowBuffer(size)
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}
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