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author | Florian Dold <florian.dold@gmail.com> | 2019-04-03 15:43:32 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2019-04-03 15:45:57 +0200 |
commit | 71e285b94c7edaa43aa8115965cf5a36b8e0f80a (patch) | |
tree | 7d4aa9d0d5aff686b106cd5da72ba77960c4af43 /deps/node/deps/npm/node_modules/buffer-from/index.js | |
parent | 7dadf9356b4f3f4137ce982ea5bb960283116e9a (diff) | |
download | akono-71e285b94c7edaa43aa8115965cf5a36b8e0f80a.tar.gz akono-71e285b94c7edaa43aa8115965cf5a36b8e0f80a.tar.bz2 akono-71e285b94c7edaa43aa8115965cf5a36b8e0f80a.zip |
Node.js v11.13.0
Diffstat (limited to 'deps/node/deps/npm/node_modules/buffer-from/index.js')
-rw-r--r-- | deps/node/deps/npm/node_modules/buffer-from/index.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/deps/node/deps/npm/node_modules/buffer-from/index.js b/deps/node/deps/npm/node_modules/buffer-from/index.js new file mode 100644 index 00000000..d92a83d0 --- /dev/null +++ b/deps/node/deps/npm/node_modules/buffer-from/index.js @@ -0,0 +1,69 @@ +var toString = Object.prototype.toString + +var isModern = ( + typeof Buffer.alloc === 'function' && + typeof Buffer.allocUnsafe === 'function' && + typeof Buffer.from === 'function' +) + +function isArrayBuffer (input) { + return toString.call(input).slice(8, -1) === 'ArrayBuffer' +} + +function fromArrayBuffer (obj, byteOffset, length) { + byteOffset >>>= 0 + + var maxLength = obj.byteLength - byteOffset + + if (maxLength < 0) { + throw new RangeError("'offset' is out of bounds") + } + + if (length === undefined) { + length = maxLength + } else { + length >>>= 0 + + if (length > maxLength) { + throw new RangeError("'length' is out of bounds") + } + } + + return isModern + ? Buffer.from(obj.slice(byteOffset, byteOffset + length)) + : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length))) +} + +function fromString (string, encoding) { + if (typeof encoding !== 'string' || encoding === '') { + encoding = 'utf8' + } + + if (!Buffer.isEncoding(encoding)) { + throw new TypeError('"encoding" must be a valid string encoding') + } + + return isModern + ? Buffer.from(string, encoding) + : new Buffer(string, encoding) +} + +function bufferFrom (value, encodingOrOffset, length) { + if (typeof value === 'number') { + throw new TypeError('"value" argument must not be a number') + } + + if (isArrayBuffer(value)) { + return fromArrayBuffer(value, encodingOrOffset, length) + } + + if (typeof value === 'string') { + return fromString(value, encodingOrOffset) + } + + return isModern + ? Buffer.from(value) + : new Buffer(value) +} + +module.exports = bufferFrom |