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