--- /dev/null
+'use strict';
+var global = require('./_global')
+ , DESCRIPTORS = require('./_descriptors')
+ , LIBRARY = require('./_library')
+ , $typed = require('./_typed')
+ , hide = require('./_hide')
+ , redefineAll = require('./_redefine-all')
+ , fails = require('./_fails')
+ , anInstance = require('./_an-instance')
+ , toInteger = require('./_to-integer')
+ , toLength = require('./_to-length')
+ , gOPN = require('./_object-gopn').f
+ , dP = require('./_object-dp').f
+ , arrayFill = require('./_array-fill')
+ , setToStringTag = require('./_set-to-string-tag')
+ , ARRAY_BUFFER = 'ArrayBuffer'
+ , DATA_VIEW = 'DataView'
+ , PROTOTYPE = 'prototype'
+ , WRONG_LENGTH = 'Wrong length!'
+ , WRONG_INDEX = 'Wrong index!'
+ , $ArrayBuffer = global[ARRAY_BUFFER]
+ , $DataView = global[DATA_VIEW]
+ , Math = global.Math
+ , RangeError = global.RangeError
+ , Infinity = global.Infinity
+ , BaseBuffer = $ArrayBuffer
+ , abs = Math.abs
+ , pow = Math.pow
+ , floor = Math.floor
+ , log = Math.log
+ , LN2 = Math.LN2
+ , BUFFER = 'buffer'
+ , BYTE_LENGTH = 'byteLength'
+ , BYTE_OFFSET = 'byteOffset'
+ , $BUFFER = DESCRIPTORS ? '_b' : BUFFER
+ , $LENGTH = DESCRIPTORS ? '_l' : BYTE_LENGTH
+ , $OFFSET = DESCRIPTORS ? '_o' : BYTE_OFFSET;
+
+// IEEE754 conversions based on https://github.com/feross/ieee754
+var packIEEE754 = function(value, mLen, nBytes){
+ var buffer = Array(nBytes)
+ , eLen = nBytes * 8 - mLen - 1
+ , eMax = (1 << eLen) - 1
+ , eBias = eMax >> 1
+ , rt = mLen === 23 ? pow(2, -24) - pow(2, -77) : 0
+ , i = 0
+ , s = value < 0 || value === 0 && 1 / value < 0 ? 1 : 0
+ , e, m, c;
+ value = abs(value)
+ if(value != value || value === Infinity){
+ m = value != value ? 1 : 0;
+ e = eMax;
+ } else {
+ e = floor(log(value) / LN2);
+ if(value * (c = pow(2, -e)) < 1){
+ e--;
+ c *= 2;
+ }
+ if(e + eBias >= 1){
+ value += rt / c;
+ } else {
+ value += rt * pow(2, 1 - eBias);
+ }
+ if(value * c >= 2){
+ e++;
+ c /= 2;
+ }
+ if(e + eBias >= eMax){
+ m = 0;
+ e = eMax;
+ } else if(e + eBias >= 1){
+ m = (value * c - 1) * pow(2, mLen);
+ e = e + eBias;
+ } else {
+ m = value * pow(2, eBias - 1) * pow(2, mLen);
+ e = 0;
+ }
+ }
+ for(; mLen >= 8; buffer[i++] = m & 255, m /= 256, mLen -= 8);
+ e = e << mLen | m;
+ eLen += mLen;
+ for(; eLen > 0; buffer[i++] = e & 255, e /= 256, eLen -= 8);
+ buffer[--i] |= s * 128;
+ return buffer;
+};
+var unpackIEEE754 = function(buffer, mLen, nBytes){
+ var eLen = nBytes * 8 - mLen - 1
+ , eMax = (1 << eLen) - 1
+ , eBias = eMax >> 1
+ , nBits = eLen - 7
+ , i = nBytes - 1
+ , s = buffer[i--]
+ , e = s & 127
+ , m;
+ s >>= 7;
+ for(; nBits > 0; e = e * 256 + buffer[i], i--, nBits -= 8);
+ m = e & (1 << -nBits) - 1;
+ e >>= -nBits;
+ nBits += mLen;
+ for(; nBits > 0; m = m * 256 + buffer[i], i--, nBits -= 8);
+ if(e === 0){
+ e = 1 - eBias;
+ } else if(e === eMax){
+ return m ? NaN : s ? -Infinity : Infinity;
+ } else {
+ m = m + pow(2, mLen);
+ e = e - eBias;
+ } return (s ? -1 : 1) * m * pow(2, e - mLen);
+};
+
+var unpackI32 = function(bytes){
+ return bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0];
+};
+var packI8 = function(it){
+ return [it & 0xff];
+};
+var packI16 = function(it){
+ return [it & 0xff, it >> 8 & 0xff];
+};
+var packI32 = function(it){
+ return [it & 0xff, it >> 8 & 0xff, it >> 16 & 0xff, it >> 24 & 0xff];
+};
+var packF64 = function(it){
+ return packIEEE754(it, 52, 8);
+};
+var packF32 = function(it){
+ return packIEEE754(it, 23, 4);
+};
+
+var addGetter = function(C, key, internal){
+ dP(C[PROTOTYPE], key, {get: function(){ return this[internal]; }});
+};
+
+var get = function(view, bytes, index, isLittleEndian){
+ var numIndex = +index
+ , intIndex = toInteger(numIndex);
+ if(numIndex != intIndex || intIndex < 0 || intIndex + bytes > view[$LENGTH])throw RangeError(WRONG_INDEX);
+ var store = view[$BUFFER]._b
+ , start = intIndex + view[$OFFSET]
+ , pack = store.slice(start, start + bytes);
+ return isLittleEndian ? pack : pack.reverse();
+};
+var set = function(view, bytes, index, conversion, value, isLittleEndian){
+ var numIndex = +index
+ , intIndex = toInteger(numIndex);
+ if(numIndex != intIndex || intIndex < 0 || intIndex + bytes > view[$LENGTH])throw RangeError(WRONG_INDEX);
+ var store = view[$BUFFER]._b
+ , start = intIndex + view[$OFFSET]
+ , pack = conversion(+value);
+ for(var i = 0; i < bytes; i++)store[start + i] = pack[isLittleEndian ? i : bytes - i - 1];
+};
+
+var validateArrayBufferArguments = function(that, length){
+ anInstance(that, $ArrayBuffer, ARRAY_BUFFER);
+ var numberLength = +length
+ , byteLength = toLength(numberLength);
+ if(numberLength != byteLength)throw RangeError(WRONG_LENGTH);
+ return byteLength;
+};
+
+if(!$typed.ABV){
+ $ArrayBuffer = function ArrayBuffer(length){
+ var byteLength = validateArrayBufferArguments(this, length);
+ this._b = arrayFill.call(Array(byteLength), 0);
+ this[$LENGTH] = byteLength;
+ };
+
+ $DataView = function DataView(buffer, byteOffset, byteLength){
+ anInstance(this, $DataView, DATA_VIEW);
+ anInstance(buffer, $ArrayBuffer, DATA_VIEW);
+ var bufferLength = buffer[$LENGTH]
+ , offset = toInteger(byteOffset);
+ if(offset < 0 || offset > bufferLength)throw RangeError('Wrong offset!');
+ byteLength = byteLength === undefined ? bufferLength - offset : toLength(byteLength);
+ if(offset + byteLength > bufferLength)throw RangeError(WRONG_LENGTH);
+ this[$BUFFER] = buffer;
+ this[$OFFSET] = offset;
+ this[$LENGTH] = byteLength;
+ };
+
+ if(DESCRIPTORS){
+ addGetter($ArrayBuffer, BYTE_LENGTH, '_l');
+ addGetter($DataView, BUFFER, '_b');
+ addGetter($DataView, BYTE_LENGTH, '_l');
+ addGetter($DataView, BYTE_OFFSET, '_o');
+ }
+
+ redefineAll($DataView[PROTOTYPE], {
+ getInt8: function getInt8(byteOffset){
+ return get(this, 1, byteOffset)[0] << 24 >> 24;
+ },
+ getUint8: function getUint8(byteOffset){
+ return get(this, 1, byteOffset)[0];
+ },
+ getInt16: function getInt16(byteOffset /*, littleEndian */){
+ var bytes = get(this, 2, byteOffset, arguments[1]);
+ return (bytes[1] << 8 | bytes[0]) << 16 >> 16;
+ },
+ getUint16: function getUint16(byteOffset /*, littleEndian */){
+ var bytes = get(this, 2, byteOffset, arguments[1]);
+ return bytes[1] << 8 | bytes[0];
+ },
+ getInt32: function getInt32(byteOffset /*, littleEndian */){
+ return unpackI32(get(this, 4, byteOffset, arguments[1]));
+ },
+ getUint32: function getUint32(byteOffset /*, littleEndian */){
+ return unpackI32(get(this, 4, byteOffset, arguments[1])) >>> 0;
+ },
+ getFloat32: function getFloat32(byteOffset /*, littleEndian */){
+ return unpackIEEE754(get(this, 4, byteOffset, arguments[1]), 23, 4);
+ },
+ getFloat64: function getFloat64(byteOffset /*, littleEndian */){
+ return unpackIEEE754(get(this, 8, byteOffset, arguments[1]), 52, 8);
+ },
+ setInt8: function setInt8(byteOffset, value){
+ set(this, 1, byteOffset, packI8, value);
+ },
+ setUint8: function setUint8(byteOffset, value){
+ set(this, 1, byteOffset, packI8, value);
+ },
+ setInt16: function setInt16(byteOffset, value /*, littleEndian */){
+ set(this, 2, byteOffset, packI16, value, arguments[2]);
+ },
+ setUint16: function setUint16(byteOffset, value /*, littleEndian */){
+ set(this, 2, byteOffset, packI16, value, arguments[2]);
+ },
+ setInt32: function setInt32(byteOffset, value /*, littleEndian */){
+ set(this, 4, byteOffset, packI32, value, arguments[2]);
+ },
+ setUint32: function setUint32(byteOffset, value /*, littleEndian */){
+ set(this, 4, byteOffset, packI32, value, arguments[2]);
+ },
+ setFloat32: function setFloat32(byteOffset, value /*, littleEndian */){
+ set(this, 4, byteOffset, packF32, value, arguments[2]);
+ },
+ setFloat64: function setFloat64(byteOffset, value /*, littleEndian */){
+ set(this, 8, byteOffset, packF64, value, arguments[2]);
+ }
+ });
+} else {
+ if(!fails(function(){
+ new $ArrayBuffer; // eslint-disable-line no-new
+ }) || !fails(function(){
+ new $ArrayBuffer(.5); // eslint-disable-line no-new
+ })){
+ $ArrayBuffer = function ArrayBuffer(length){
+ return new BaseBuffer(validateArrayBufferArguments(this, length));
+ };
+ var ArrayBufferProto = $ArrayBuffer[PROTOTYPE] = BaseBuffer[PROTOTYPE];
+ for(var keys = gOPN(BaseBuffer), j = 0, key; keys.length > j; ){
+ if(!((key = keys[j++]) in $ArrayBuffer))hide($ArrayBuffer, key, BaseBuffer[key]);
+ };
+ if(!LIBRARY)ArrayBufferProto.constructor = $ArrayBuffer;
+ }
+ // iOS Safari 7.x bug
+ var view = new $DataView(new $ArrayBuffer(2))
+ , $setInt8 = $DataView[PROTOTYPE].setInt8;
+ view.setInt8(0, 2147483648);
+ view.setInt8(1, 2147483649);
+ if(view.getInt8(0) || !view.getInt8(1))redefineAll($DataView[PROTOTYPE], {
+ setInt8: function setInt8(byteOffset, value){
+ $setInt8.call(this, byteOffset, value << 24 >> 24);
+ },
+ setUint8: function setUint8(byteOffset, value){
+ $setInt8.call(this, byteOffset, value << 24 >> 24);
+ }
+ }, true);
+}
+setToStringTag($ArrayBuffer, ARRAY_BUFFER);
+setToStringTag($DataView, DATA_VIEW);
+hide($DataView[PROTOTYPE], $typed.VIEW, true);
+exports[ARRAY_BUFFER] = $ArrayBuffer;
+exports[DATA_VIEW] = $DataView;
\ No newline at end of file
projects / yaffs-website / blobdiff