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valueForInt64Signal(signalSpec, hexData) {
const blen = hexData.length * 4;
let value;
let startBit;
let dataBitPos;
if (signalSpec.isLittleEndian) {
value = UINT64(swapOrder(hexData, 16, 2), 16);
startBit = signalSpec.startBit;
dataBitPos = UINT64(startBit);
} else {
// big endian
value = UINT64(hexData, 16);
startBit = DbcUtils.bigEndianBitIndex(signalSpec.startBit);
dataBitPos = UINT64(blen - (startBit + signalSpec.size));
}
if (dataBitPos < 0) {
return null;
}
const rightHandAnd = UINT64(Math.pow(2, signalSpec.size) - 1);
let ival = value
.shiftr(dataBitPos)
.and(rightHandAnd)
.toNumber();
if (signalSpec.isSigned && ival & Math.pow(2, signalSpec.size - 1)) {
ival -= Math.pow(2, signalSpec.size);
}
ival = ival * signalSpec.factor + signalSpec.offset;
return ival;
const handler = () => {
const size = file.transformed ? file.transformed.stat.size : file.stat.size
// JavaScript can not precisely present integers >= UINT32_MAX.
if (size > 4294967295) {
throw new Error(`${p}: file size can not be larger than 4.2GB`)
}
node.size = size
node.offset = this.offset.toString()
if (process.platform !== 'win32' && (file.stat.mode & 0o100)) {
node.executable = true
}
this.offset.add(UINT64(size))
return callback()
}
if (signalSpec.isLittleEndian) {
value = UINT64(swapOrder(hexData, 16, 2), 16);
startBit = signalSpec.startBit;
dataBitPos = UINT64(startBit);
} else {
// big endian
value = UINT64(hexData, 16);
startBit = DbcUtils.bigEndianBitIndex(signalSpec.startBit);
dataBitPos = UINT64(blen - (startBit + signalSpec.size));
}
if (dataBitPos < 0) {
return null;
}
const rightHandAnd = UINT64(Math.pow(2, signalSpec.size) - 1);
let ival = value
.shiftr(dataBitPos)
.and(rightHandAnd)
.toNumber();
if (signalSpec.isSigned && ival & Math.pow(2, signalSpec.size - 1)) {
ival -= Math.pow(2, signalSpec.size);
}
ival = ival * signalSpec.factor + signalSpec.offset;
return ival;
}
// JavaScript can not precisely present integers >= UINT32_MAX.
if (size > UINT32_MAX) {
const error = new Error(`${p}: file size can not be larger than 4.2GB`)
if (reject) {
return reject(error)
} else {
throw error
}
}
node.size = size
node.offset = this.offset.toString()
if (process.platform !== 'win32' && (file.stat.mode & 0o100)) {
node.executable = true
}
this.offset.add(UINT64(size))
return resolve ? resolve() : Promise.resolve()
}
valueForInt64Signal(signalSpec, hexData) {
const blen = hexData.length * 4;
let value;
let startBit;
let dataBitPos;
if (signalSpec.isLittleEndian) {
value = UINT64(swapOrder(hexData, 16, 2), 16);
startBit = signalSpec.startBit;
dataBitPos = UINT64(startBit);
} else {
// big endian
value = UINT64(hexData, 16);
startBit = DbcUtils.bigEndianBitIndex(signalSpec.startBit);
dataBitPos = UINT64(blen - (startBit + signalSpec.size));
}
if (dataBitPos < 0) {
return null;
}
const rightHandAnd = UINT64(Math.pow(2, signalSpec.size) - 1);
let ival = value
.shiftr(dataBitPos)
.and(rightHandAnd)
.toNumber();
if (signalSpec.isSigned && ival & Math.pow(2, signalSpec.size - 1)) {
ival -= Math.pow(2, signalSpec.size);
c00 = a00 * b00
c16 = c00 >>> 16
c16 += a16 * b00
c16 &= 0xFFFF // Not required but improves performance
c16 += a00 * b16
this._low = c00 & 0xFFFF
this._high = c16 & 0xFFFF
}
/*
* Constants
*/
var PRIME32_1 = UINT32( '2654435761' )
var PRIME32_2 = UINT32( '2246822519' )
var PRIME32_3 = UINT32( '3266489917' )
var PRIME32_4 = UINT32( '668265263' )
var PRIME32_5 = UINT32( '374761393' )
/**
* Convert string to proper UTF-8 array
* @param str Input string
* @returns {Uint8Array} UTF8 array is returned as uint8 array
*/
function toUTF8Array (str) {
var utf8 = []
for (var i=0, n=str.length; i < n; i++) {
var charcode = str.charCodeAt(i)
if (charcode < 0x80) utf8.push(charcode)
else if (charcode < 0x800) {
c00 = a00 * b00
c16 = c00 >>> 16
c16 += a16 * b00
c16 &= 0xFFFF // Not required but improves performance
c16 += a00 * b16
this._low = c00 & 0xFFFF
this._high = c16 & 0xFFFF
}
/*
* Constants
*/
var PRIME32_1 = UINT32( '2654435761' )
var PRIME32_2 = UINT32( '2246822519' )
var PRIME32_3 = UINT32( '3266489917' )
var PRIME32_4 = UINT32( '668265263' )
var PRIME32_5 = UINT32( '374761393' )
/**
* Convert string to proper UTF-8 array
* @param str Input string
* @returns {Uint8Array} UTF8 array is returned as uint8 array
*/
function toUTF8Array (str) {
var utf8 = []
for (var i=0, n=str.length; i < n; i++) {
var charcode = str.charCodeAt(i)
if (charcode < 0x80) utf8.push(charcode)
else if (charcode < 0x800) {
utf8.push(0xc0 | (charcode >> 6),
c16 += a16 * b00
c16 &= 0xFFFF // Not required but improves performance
c16 += a00 * b16
this._low = c00 & 0xFFFF
this._high = c16 & 0xFFFF
}
/*
* Constants
*/
var PRIME32_1 = UINT32( '2654435761' )
var PRIME32_2 = UINT32( '2246822519' )
var PRIME32_3 = UINT32( '3266489917' )
var PRIME32_4 = UINT32( '668265263' )
var PRIME32_5 = UINT32( '374761393' )
/**
* Convert string to proper UTF-8 array
* @param str Input string
* @returns {Uint8Array} UTF8 array is returned as uint8 array
*/
function toUTF8Array (str) {
var utf8 = []
for (var i=0, n=str.length; i < n; i++) {
var charcode = str.charCodeAt(i)
if (charcode < 0x80) utf8.push(charcode)
else if (charcode < 0x800) {
utf8.push(0xc0 | (charcode >> 6),
0x80 | (charcode & 0x3f))
}
else if (charcode < 0xd800 || charcode >= 0xe000) {
function compressBlock (src, dst, pos, hashTable, sIdx, eIdx) {
var Hash = uint32() // Reusable unsigned 32 bits integer
var dpos = sIdx
var dlen = eIdx - sIdx
var anchor = 0
if (src.length >= maxInputSize) throw new Error("input too large")
// Minimum of input bytes for compression (LZ4 specs)
if (src.length > mfLimit) {
var n = exports.compressBound(src.length)
if ( dlen < n ) throw Error("output too small: " + dlen + " < " + n)
var
step = 1
, findMatchAttempts = (1 << skipStrength) + 3
// Keep last few bytes incompressible (LZ4 specs):
// last 5 bytes must be literals
// uint32() optimization
, hashLog = 16
, hashShift = (minMatch * 8) - hashLog
, hashSize = 1 << hashLog
, copyLength = 8
, lastLiterals = 5
, mfLimit = copyLength + minMatch
, skipStrength = 6
, mlBits = 4
, mlMask = (1 << mlBits) - 1
, runBits = 8 - mlBits
, runMask = (1 << runBits) - 1
, hasher = uint32(2654435761)
// CompressBound returns the maximum length of a lz4 block, given it's uncompressed length
exports.compressBound = function (isize) {
return isize > maxInputSize
? 0
: (isize + (isize/255) + 16) | 0
}
exports.compressHC = exports.compress
exports.compress = function (src, dst, sIdx, eIdx) {
// V8 optimization: non sparse array with integers
var hashTable = new Array(hashSize)
for (var i = 0; i < hashSize; i++) {
hashTable[i] = 0
}