diff options
Diffstat (limited to 'deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/concat-stream/node_modules/typedarray/index.js')
| -rw-r--r-- | deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/concat-stream/node_modules/typedarray/index.js | 630 |
1 files changed, 0 insertions, 630 deletions
diff --git a/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/concat-stream/node_modules/typedarray/index.js b/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/concat-stream/node_modules/typedarray/index.js deleted file mode 100644 index 5e540841f4..0000000000 --- a/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/concat-stream/node_modules/typedarray/index.js +++ /dev/null @@ -1,630 +0,0 @@ -var undefined = (void 0); // Paranoia - -// Beyond this value, index getters/setters (i.e. array[0], array[1]) are so slow to -// create, and consume so much memory, that the browser appears frozen. -var MAX_ARRAY_LENGTH = 1e5; - -// Approximations of internal ECMAScript conversion functions -var ECMAScript = (function() { - // Stash a copy in case other scripts modify these - var opts = Object.prototype.toString, - ophop = Object.prototype.hasOwnProperty; - - return { - // Class returns internal [[Class]] property, used to avoid cross-frame instanceof issues: - Class: function(v) { return opts.call(v).replace(/^\[object *|\]$/g, ''); }, - HasProperty: function(o, p) { return p in o; }, - HasOwnProperty: function(o, p) { return ophop.call(o, p); }, - IsCallable: function(o) { return typeof o === 'function'; }, - ToInt32: function(v) { return v >> 0; }, - ToUint32: function(v) { return v >>> 0; } - }; -}()); - -// Snapshot intrinsics -var LN2 = Math.LN2, - abs = Math.abs, - floor = Math.floor, - log = Math.log, - min = Math.min, - pow = Math.pow, - round = Math.round; - -// ES5: lock down object properties -function configureProperties(obj) { - if (getOwnPropNames && defineProp) { - var props = getOwnPropNames(obj), i; - for (i = 0; i < props.length; i += 1) { - defineProp(obj, props[i], { - value: obj[props[i]], - writable: false, - enumerable: false, - configurable: false - }); - } - } -} - -// emulate ES5 getter/setter API using legacy APIs -// http://blogs.msdn.com/b/ie/archive/2010/09/07/transitioning-existing-code-to-the-es5-getter-setter-apis.aspx -// (second clause tests for Object.defineProperty() in IE<9 that only supports extending DOM prototypes, but -// note that IE<9 does not support __defineGetter__ or __defineSetter__ so it just renders the method harmless) -var defineProp -if (Object.defineProperty && (function() { - try { - Object.defineProperty({}, 'x', {}); - return true; - } catch (e) { - return false; - } - })()) { - defineProp = Object.defineProperty; -} else { - defineProp = function(o, p, desc) { - if (!o === Object(o)) throw new TypeError("Object.defineProperty called on non-object"); - if (ECMAScript.HasProperty(desc, 'get') && Object.prototype.__defineGetter__) { Object.prototype.__defineGetter__.call(o, p, desc.get); } - if (ECMAScript.HasProperty(desc, 'set') && Object.prototype.__defineSetter__) { Object.prototype.__defineSetter__.call(o, p, desc.set); } - if (ECMAScript.HasProperty(desc, 'value')) { o[p] = desc.value; } - return o; - }; -} - -var getOwnPropNames = Object.getOwnPropertyNames || function (o) { - if (o !== Object(o)) throw new TypeError("Object.getOwnPropertyNames called on non-object"); - var props = [], p; - for (p in o) { - if (ECMAScript.HasOwnProperty(o, p)) { - props.push(p); - } - } - return props; -}; - -// ES5: Make obj[index] an alias for obj._getter(index)/obj._setter(index, value) -// for index in 0 ... obj.length -function makeArrayAccessors(obj) { - if (!defineProp) { return; } - - if (obj.length > MAX_ARRAY_LENGTH) throw new RangeError("Array too large for polyfill"); - - function makeArrayAccessor(index) { - defineProp(obj, index, { - 'get': function() { return obj._getter(index); }, - 'set': function(v) { obj._setter(index, v); }, - enumerable: true, - configurable: false - }); - } - - var i; - for (i = 0; i < obj.length; i += 1) { - makeArrayAccessor(i); - } -} - -// Internal conversion functions: -// pack<Type>() - take a number (interpreted as Type), output a byte array -// unpack<Type>() - take a byte array, output a Type-like number - -function as_signed(value, bits) { var s = 32 - bits; return (value << s) >> s; } -function as_unsigned(value, bits) { var s = 32 - bits; return (value << s) >>> s; } - -function packI8(n) { return [n & 0xff]; } -function unpackI8(bytes) { return as_signed(bytes[0], 8); } - -function packU8(n) { return [n & 0xff]; } -function unpackU8(bytes) { return as_unsigned(bytes[0], 8); } - -function packU8Clamped(n) { n = round(Number(n)); return [n < 0 ? 0 : n > 0xff ? 0xff : n & 0xff]; } - -function packI16(n) { return [(n >> 8) & 0xff, n & 0xff]; } -function unpackI16(bytes) { return as_signed(bytes[0] << 8 | bytes[1], 16); } - -function packU16(n) { return [(n >> 8) & 0xff, n & 0xff]; } -function unpackU16(bytes) { return as_unsigned(bytes[0] << 8 | bytes[1], 16); } - -function packI32(n) { return [(n >> 24) & 0xff, (n >> 16) & 0xff, (n >> 8) & 0xff, n & 0xff]; } -function unpackI32(bytes) { return as_signed(bytes[0] << 24 | bytes[1] << 16 | bytes[2] << 8 | bytes[3], 32); } - -function packU32(n) { return [(n >> 24) & 0xff, (n >> 16) & 0xff, (n >> 8) & 0xff, n & 0xff]; } -function unpackU32(bytes) { return as_unsigned(bytes[0] << 24 | bytes[1] << 16 | bytes[2] << 8 | bytes[3], 32); } - -function packIEEE754(v, ebits, fbits) { - - var bias = (1 << (ebits - 1)) - 1, - s, e, f, ln, - i, bits, str, bytes; - - function roundToEven(n) { - var w = floor(n), f = n - w; - if (f < 0.5) - return w; - if (f > 0.5) - return w + 1; - return w % 2 ? w + 1 : w; - } - - // Compute sign, exponent, fraction - if (v !== v) { - // NaN - // http://dev.w3.org/2006/webapi/WebIDL/#es-type-mapping - e = (1 << ebits) - 1; f = pow(2, fbits - 1); s = 0; - } else if (v === Infinity || v === -Infinity) { - e = (1 << ebits) - 1; f = 0; s = (v < 0) ? 1 : 0; - } else if (v === 0) { - e = 0; f = 0; s = (1 / v === -Infinity) ? 1 : 0; - } else { - s = v < 0; - v = abs(v); - - if (v >= pow(2, 1 - bias)) { - e = min(floor(log(v) / LN2), 1023); - f = roundToEven(v / pow(2, e) * pow(2, fbits)); - if (f / pow(2, fbits) >= 2) { - e = e + 1; - f = 1; - } - if (e > bias) { - // Overflow - e = (1 << ebits) - 1; - f = 0; - } else { - // Normalized - e = e + bias; - f = f - pow(2, fbits); - } - } else { - // Denormalized - e = 0; - f = roundToEven(v / pow(2, 1 - bias - fbits)); - } - } - - // Pack sign, exponent, fraction - bits = []; - for (i = fbits; i; i -= 1) { bits.push(f % 2 ? 1 : 0); f = floor(f / 2); } - for (i = ebits; i; i -= 1) { bits.push(e % 2 ? 1 : 0); e = floor(e / 2); } - bits.push(s ? 1 : 0); - bits.reverse(); - str = bits.join(''); - - // Bits to bytes - bytes = []; - while (str.length) { - bytes.push(parseInt(str.substring(0, 8), 2)); - str = str.substring(8); - } - return bytes; -} - -function unpackIEEE754(bytes, ebits, fbits) { - - // Bytes to bits - var bits = [], i, j, b, str, - bias, s, e, f; - - for (i = bytes.length; i; i -= 1) { - b = bytes[i - 1]; - for (j = 8; j; j -= 1) { - bits.push(b % 2 ? 1 : 0); b = b >> 1; - } - } - bits.reverse(); - str = bits.join(''); - - // Unpack sign, exponent, fraction - bias = (1 << (ebits - 1)) - 1; - s = parseInt(str.substring(0, 1), 2) ? -1 : 1; - e = parseInt(str.substring(1, 1 + ebits), 2); - f = parseInt(str.substring(1 + ebits), 2); - - // Produce number - if (e === (1 << ebits) - 1) { - return f !== 0 ? NaN : s * Infinity; - } else if (e > 0) { - // Normalized - return s * pow(2, e - bias) * (1 + f / pow(2, fbits)); - } else if (f !== 0) { - // Denormalized - return s * pow(2, -(bias - 1)) * (f / pow(2, fbits)); - } else { - return s < 0 ? -0 : 0; - } -} - -function unpackF64(b) { return unpackIEEE754(b, 11, 52); } -function packF64(v) { return packIEEE754(v, 11, 52); } -function unpackF32(b) { return unpackIEEE754(b, 8, 23); } -function packF32(v) { return packIEEE754(v, 8, 23); } - - -// -// 3 The ArrayBuffer Type -// - -(function() { - - /** @constructor */ - var ArrayBuffer = function ArrayBuffer(length) { - length = ECMAScript.ToInt32(length); - if (length < 0) throw new RangeError('ArrayBuffer size is not a small enough positive integer'); - - this.byteLength = length; - this._bytes = []; - this._bytes.length = length; - - var i; - for (i = 0; i < this.byteLength; i += 1) { - this._bytes[i] = 0; - } - - configureProperties(this); - }; - - exports.ArrayBuffer = exports.ArrayBuffer || ArrayBuffer; - - // - // 4 The ArrayBufferView Type - // - - // NOTE: this constructor is not exported - /** @constructor */ - var ArrayBufferView = function ArrayBufferView() { - //this.buffer = null; - //this.byteOffset = 0; - //this.byteLength = 0; - }; - - // - // 5 The Typed Array View Types - // - - function makeConstructor(bytesPerElement, pack, unpack) { - // Each TypedArray type requires a distinct constructor instance with - // identical logic, which this produces. - - var ctor; - ctor = function(buffer, byteOffset, length) { - var array, sequence, i, s; - - if (!arguments.length || typeof arguments[0] === 'number') { - // Constructor(unsigned long length) - this.length = ECMAScript.ToInt32(arguments[0]); - if (length < 0) throw new RangeError('ArrayBufferView size is not a small enough positive integer'); - - this.byteLength = this.length * this.BYTES_PER_ELEMENT; - this.buffer = new ArrayBuffer(this.byteLength); - this.byteOffset = 0; - } else if (typeof arguments[0] === 'object' && arguments[0].constructor === ctor) { - // Constructor(TypedArray array) - array = arguments[0]; - - this.length = array.length; - this.byteLength = this.length * this.BYTES_PER_ELEMENT; - this.buffer = new ArrayBuffer(this.byteLength); - this.byteOffset = 0; - - for (i = 0; i < this.length; i += 1) { - this._setter(i, array._getter(i)); - } - } else if (typeof arguments[0] === 'object' && - !(arguments[0] instanceof ArrayBuffer || ECMAScript.Class(arguments[0]) === 'ArrayBuffer')) { - // Constructor(sequence<type> array) - sequence = arguments[0]; - - this.length = ECMAScript.ToUint32(sequence.length); - this.byteLength = this.length * this.BYTES_PER_ELEMENT; - this.buffer = new ArrayBuffer(this.byteLength); - this.byteOffset = 0; - - for (i = 0; i < this.length; i += 1) { - s = sequence[i]; - this._setter(i, Number(s)); - } - } else if (typeof arguments[0] === 'object' && - (arguments[0] instanceof ArrayBuffer || ECMAScript.Class(arguments[0]) === 'ArrayBuffer')) { - // Constructor(ArrayBuffer buffer, - // optional unsigned long byteOffset, optional unsigned long length) - this.buffer = buffer; - - this.byteOffset = ECMAScript.ToUint32(byteOffset); - if (this.byteOffset > this.buffer.byteLength) { - throw new RangeError("byteOffset out of range"); - } - - if (this.byteOffset % this.BYTES_PER_ELEMENT) { - // The given byteOffset must be a multiple of the element - // size of the specific type, otherwise an exception is raised. - throw new RangeError("ArrayBuffer length minus the byteOffset is not a multiple of the element size."); - } - - if (arguments.length < 3) { - this.byteLength = this.buffer.byteLength - this.byteOffset; - - if (this.byteLength % this.BYTES_PER_ELEMENT) { - throw new RangeError("length of buffer minus byteOffset not a multiple of the element size"); - } - this.length = this.byteLength / this.BYTES_PER_ELEMENT; - } else { - this.length = ECMAScript.ToUint32(length); - this.byteLength = this.length * this.BYTES_PER_ELEMENT; - } - - if ((this.byteOffset + this.byteLength) > this.buffer.byteLength) { - throw new RangeError("byteOffset and length reference an area beyond the end of the buffer"); - } - } else { - throw new TypeError("Unexpected argument type(s)"); - } - - this.constructor = ctor; - - configureProperties(this); - makeArrayAccessors(this); - }; - - ctor.prototype = new ArrayBufferView(); - ctor.prototype.BYTES_PER_ELEMENT = bytesPerElement; - ctor.prototype._pack = pack; - ctor.prototype._unpack = unpack; - ctor.BYTES_PER_ELEMENT = bytesPerElement; - - // getter type (unsigned long index); - ctor.prototype._getter = function(index) { - if (arguments.length < 1) throw new SyntaxError("Not enough arguments"); - - index = ECMAScript.ToUint32(index); - if (index >= this.length) { - return undefined; - } - - var bytes = [], i, o; - for (i = 0, o = this.byteOffset + index * this.BYTES_PER_ELEMENT; - i < this.BYTES_PER_ELEMENT; - i += 1, o += 1) { - bytes.push(this.buffer._bytes[o]); - } - return this._unpack(bytes); - }; - - // NONSTANDARD: convenience alias for getter: type get(unsigned long index); - ctor.prototype.get = ctor.prototype._getter; - - // setter void (unsigned long index, type value); - ctor.prototype._setter = function(index, value) { - if (arguments.length < 2) throw new SyntaxError("Not enough arguments"); - - index = ECMAScript.ToUint32(index); - if (index >= this.length) { - return undefined; - } - - var bytes = this._pack(value), i, o; - for (i = 0, o = this.byteOffset + index * this.BYTES_PER_ELEMENT; - i < this.BYTES_PER_ELEMENT; - i += 1, o += 1) { - this.buffer._bytes[o] = bytes[i]; - } - }; - - // void set(TypedArray array, optional unsigned long offset); - // void set(sequence<type> array, optional unsigned long offset); - ctor.prototype.set = function(index, value) { - if (arguments.length < 1) throw new SyntaxError("Not enough arguments"); - var array, sequence, offset, len, - i, s, d, - byteOffset, byteLength, tmp; - - if (typeof arguments[0] === 'object' && arguments[0].constructor === this.constructor) { - // void set(TypedArray array, optional unsigned long offset); - array = arguments[0]; - offset = ECMAScript.ToUint32(arguments[1]); - - if (offset + array.length > this.length) { - throw new RangeError("Offset plus length of array is out of range"); - } - - byteOffset = this.byteOffset + offset * this.BYTES_PER_ELEMENT; - byteLength = array.length * this.BYTES_PER_ELEMENT; - - if (array.buffer === this.buffer) { - tmp = []; - for (i = 0, s = array.byteOffset; i < byteLength; i += 1, s += 1) { - tmp[i] = array.buffer._bytes[s]; - } - for (i = 0, d = byteOffset; i < byteLength; i += 1, d += 1) { - this.buffer._bytes[d] = tmp[i]; - } - } else { - for (i = 0, s = array.byteOffset, d = byteOffset; - i < byteLength; i += 1, s += 1, d += 1) { - this.buffer._bytes[d] = array.buffer._bytes[s]; - } - } - } else if (typeof arguments[0] === 'object' && typeof arguments[0].length !== 'undefined') { - // void set(sequence<type> array, optional unsigned long offset); - sequence = arguments[0]; - len = ECMAScript.ToUint32(sequence.length); - offset = ECMAScript.ToUint32(arguments[1]); - - if (offset + len > this.length) { - throw new RangeError("Offset plus length of array is out of range"); - } - - for (i = 0; i < len; i += 1) { - s = sequence[i]; - this._setter(offset + i, Number(s)); - } - } else { - throw new TypeError("Unexpected argument type(s)"); - } - }; - - // TypedArray subarray(long begin, optional long end); - ctor.prototype.subarray = function(start, end) { - function clamp(v, min, max) { return v < min ? min : v > max ? max : v; } - - start = ECMAScript.ToInt32(start); - end = ECMAScript.ToInt32(end); - - if (arguments.length < 1) { start = 0; } - if (arguments.length < 2) { end = this.length; } - - if (start < 0) { start = this.length + start; } - if (end < 0) { end = this.length + end; } - - start = clamp(start, 0, this.length); - end = clamp(end, 0, this.length); - - var len = end - start; - if (len < 0) { - len = 0; - } - - return new this.constructor( - this.buffer, this.byteOffset + start * this.BYTES_PER_ELEMENT, len); - }; - - return ctor; - } - - var Int8Array = makeConstructor(1, packI8, unpackI8); - var Uint8Array = makeConstructor(1, packU8, unpackU8); - var Uint8ClampedArray = makeConstructor(1, packU8Clamped, unpackU8); - var Int16Array = makeConstructor(2, packI16, unpackI16); - var Uint16Array = makeConstructor(2, packU16, unpackU16); - var Int32Array = makeConstructor(4, packI32, unpackI32); - var Uint32Array = makeConstructor(4, packU32, unpackU32); - var Float32Array = makeConstructor(4, packF32, unpackF32); - var Float64Array = makeConstructor(8, packF64, unpackF64); - - exports.Int8Array = exports.Int8Array || Int8Array; - exports.Uint8Array = exports.Uint8Array || Uint8Array; - exports.Uint8ClampedArray = exports.Uint8ClampedArray || Uint8ClampedArray; - exports.Int16Array = exports.Int16Array || Int16Array; - exports.Uint16Array = exports.Uint16Array || Uint16Array; - exports.Int32Array = exports.Int32Array || Int32Array; - exports.Uint32Array = exports.Uint32Array || Uint32Array; - exports.Float32Array = exports.Float32Array || Float32Array; - exports.Float64Array = exports.Float64Array || Float64Array; -}()); - -// -// 6 The DataView View Type -// - -(function() { - function r(array, index) { - return ECMAScript.IsCallable(array.get) ? array.get(index) : array[index]; - } - - var IS_BIG_ENDIAN = (function() { - var u16array = new(exports.Uint16Array)([0x1234]), - u8array = new(exports.Uint8Array)(u16array.buffer); - return r(u8array, 0) === 0x12; - }()); - - // Constructor(ArrayBuffer buffer, - // optional unsigned long byteOffset, - // optional unsigned long byteLength) - /** @constructor */ - var DataView = function DataView(buffer, byteOffset, byteLength) { - if (arguments.length === 0) { - buffer = new exports.ArrayBuffer(0); - } else if (!(buffer instanceof exports.ArrayBuffer || ECMAScript.Class(buffer) === 'ArrayBuffer')) { - throw new TypeError("TypeError"); - } - - this.buffer = buffer || new exports.ArrayBuffer(0); - - this.byteOffset = ECMAScript.ToUint32(byteOffset); - if (this.byteOffset > this.buffer.byteLength) { - throw new RangeError("byteOffset out of range"); - } - - if (arguments.length < 3) { - this.byteLength = this.buffer.byteLength - this.byteOffset; - } else { - this.byteLength = ECMAScript.ToUint32(byteLength); - } - - if ((this.byteOffset + this.byteLength) > this.buffer.byteLength) { - throw new RangeError("byteOffset and length reference an area beyond the end of the buffer"); - } - - configureProperties(this); - }; - - function makeGetter(arrayType) { - return function(byteOffset, littleEndian) { - - byteOffset = ECMAScript.ToUint32(byteOffset); - - if (byteOffset + arrayType.BYTES_PER_ELEMENT > this.byteLength) { - throw new RangeError("Array index out of range"); - } - byteOffset += this.byteOffset; - - var uint8Array = new exports.Uint8Array(this.buffer, byteOffset, arrayType.BYTES_PER_ELEMENT), - bytes = [], i; - for (i = 0; i < arrayType.BYTES_PER_ELEMENT; i += 1) { - bytes.push(r(uint8Array, i)); - } - - if (Boolean(littleEndian) === Boolean(IS_BIG_ENDIAN)) { - bytes.reverse(); - } - - return r(new arrayType(new exports.Uint8Array(bytes).buffer), 0); - }; - } - - DataView.prototype.getUint8 = makeGetter(exports.Uint8Array); - DataView.prototype.getInt8 = makeGetter(exports.Int8Array); - DataView.prototype.getUint16 = makeGetter(exports.Uint16Array); - DataView.prototype.getInt16 = makeGetter(exports.Int16Array); - DataView.prototype.getUint32 = makeGetter(exports.Uint32Array); - DataView.prototype.getInt32 = makeGetter(exports.Int32Array); - DataView.prototype.getFloat32 = makeGetter(exports.Float32Array); - DataView.prototype.getFloat64 = makeGetter(exports.Float64Array); - - function makeSetter(arrayType) { - return function(byteOffset, value, littleEndian) { - - byteOffset = ECMAScript.ToUint32(byteOffset); - if (byteOffset + arrayType.BYTES_PER_ELEMENT > this.byteLength) { - throw new RangeError("Array index out of range"); - } - - // Get bytes - var typeArray = new arrayType([value]), - byteArray = new exports.Uint8Array(typeArray.buffer), - bytes = [], i, byteView; - - for (i = 0; i < arrayType.BYTES_PER_ELEMENT; i += 1) { - bytes.push(r(byteArray, i)); - } - - // Flip if necessary - if (Boolean(littleEndian) === Boolean(IS_BIG_ENDIAN)) { - bytes.reverse(); - } - - // Write them - byteView = new exports.Uint8Array(this.buffer, byteOffset, arrayType.BYTES_PER_ELEMENT); - byteView.set(bytes); - }; - } - - DataView.prototype.setUint8 = makeSetter(exports.Uint8Array); - DataView.prototype.setInt8 = makeSetter(exports.Int8Array); - DataView.prototype.setUint16 = makeSetter(exports.Uint16Array); - DataView.prototype.setInt16 = makeSetter(exports.Int16Array); - DataView.prototype.setUint32 = makeSetter(exports.Uint32Array); - DataView.prototype.setInt32 = makeSetter(exports.Int32Array); - DataView.prototype.setFloat32 = makeSetter(exports.Float32Array); - DataView.prototype.setFloat64 = makeSetter(exports.Float64Array); - - exports.DataView = exports.DataView || DataView; - -}()); |