78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
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/* eslint-disable node/no-deprecated-api */
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'use strict'
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var buffer = require('buffer')
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var Buffer = buffer.Buffer
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var safer = {}
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var key
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for (key in buffer) {
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if (!buffer.hasOwnProperty(key)) continue
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if (key === 'SlowBuffer' || key === 'Buffer') continue
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safer[key] = buffer[key]
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}
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var Safer = safer.Buffer = {}
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for (key in Buffer) {
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if (!Buffer.hasOwnProperty(key)) continue
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if (key === 'allocUnsafe' || key === 'allocUnsafeSlow') continue
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Safer[key] = Buffer[key]
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}
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safer.Buffer.prototype = Buffer.prototype
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if (!Safer.from || Safer.from === Uint8Array.from) {
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Safer.from = function (value, encodingOrOffset, length) {
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if (typeof value === 'number') {
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throw new TypeError('The "value" argument must not be of type number. Received type ' + typeof value)
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}
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if (value && typeof value.length === 'undefined') {
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throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type ' + typeof value)
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}
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return Buffer(value, encodingOrOffset, length)
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}
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}
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if (!Safer.alloc) {
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Safer.alloc = function (size, fill, encoding) {
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if (typeof size !== 'number') {
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throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)
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}
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if (size < 0 || size >= 2 * (1 << 30)) {
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throw new RangeError('The value "' + size + '" is invalid for option "size"')
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}
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var buf = Buffer(size)
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if (!fill || fill.length === 0) {
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buf.fill(0)
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} else 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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return buf
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}
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}
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if (!safer.kStringMaxLength) {
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try {
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safer.kStringMaxLength = process.binding('buffer').kStringMaxLength
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} catch (e) {
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// we can't determine kStringMaxLength in environments where process.binding
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// is unsupported, so let's not set it
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}
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}
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if (!safer.constants) {
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safer.constants = {
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MAX_LENGTH: safer.kMaxLength
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}
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if (safer.kStringMaxLength) {
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safer.constants.MAX_STRING_LENGTH = safer.kStringMaxLength
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}
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}
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module.exports = safer
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