How to use the crc.crcjam function in crc
To help you get started, we’ve selected a few crc examples, based on popular ways it is used in public projects.
Secure your code as it's written. Use Snyk Code to scan source code in minutes - no build needed - and fix issues immediately.
jgraph / drawio / src / main / webapp / electron.js View on Github 
{
outBuff.writeInt8(0, outOffset);
outOffset ++;
data.copy(outBuff, outOffset);
}
else
{
outBuff.write(data, outOffset);
}
outOffset += data.length;
}
var crcVal = 0xffffffff;
crcVal = crc.crcjam(typeSignature, crcVal);
crcVal = crc.crcjam(data, crcVal);
// CRC
outBuff.writeInt32BE(crcVal ^ 0xffffffff, outOffset);
outOffset += 4;
// Writes the IDAT chunk after the zTXt
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset);
// Encodes the buffer using base64 if requested
return base64encoded? outBuff.toString('base64') : outBuff;
}{
outBuff.writeInt8(0, outOffset);
outOffset ++;
data.copy(outBuff, outOffset);
}
else
{
outBuff.write(data, outOffset);
}
outOffset += data.length;
}
var crcVal = 0xffffffff;
crcVal = crc.crcjam(typeSignature, crcVal);
crcVal = crc.crcjam(data, crcVal);
// CRC
outBuff.writeInt32BE(crcVal ^ 0xffffffff, outOffset);
outOffset += 4;
// Writes the IDAT chunk after the zTXt
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset);
// Encodes the buffer using base64 if requested
return base64encoded? outBuff.toString('base64') : outBuff;
}if (compressed)
{
outBuff.writeInt8(0, outOffset);
outOffset ++;
data.copy(outBuff, outOffset);
}
else
{
outBuff.write(data, outOffset);
}
outOffset += data.length;
}
var crcVal = 0xffffffff;
crcVal = crc.crcjam(typeSignature, crcVal);
crcVal = crc.crcjam(data, crcVal);
// CRC
outBuff.writeInt32BE(crcVal ^ 0xffffffff, outOffset);
outOffset += 4;
// Writes the IDAT chunk after the zTXt
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset);
// Encodes the buffer using base64 if requested
return base64encoded? outBuff.toString('base64') : outBuff;if (compressed)
{
outBuff.writeInt8(0, outOffset);
outOffset ++;
data.copy(outBuff, outOffset);
}
else
{
outBuff.write(data, outOffset);
}
outOffset += data.length;
}
var crcVal = 0xffffffff;
crcVal = crc.crcjam(typeSignature, crcVal);
crcVal = crc.crcjam(data, crcVal);
// CRC
outBuff.writeInt32BE(crcVal ^ 0xffffffff, outOffset);
outOffset += 4;
// Writes the IDAT chunk after the zTXt
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset);
// Encodes the buffer using base64 if requested
return base64encoded? outBuff.toString('base64') : outBuff;crc
Module for calculating Cyclic Redundancy Check (CRC) for Node.js and the browser.
