function sha256_update()

in AliRTC2.5/Web/RtcSample/sha256.js [124:145]

• 15 lines of code
• 5 McCabe index (conditional complexity)

function sha256_update(data, inputLen) {
	var i, index, curpos = 0;
	/* Compute number of bytes mod 64 */
	index = ((count[0] >> 3) & 0x3f);
        var remainder = (inputLen & 0x3f);

	/* Update number of bits */
	if ((count[0] += (inputLen << 3)) < (inputLen << 3)) count[1]++;
	count[1] += (inputLen >> 29);

	/* Transform as many times as possible */
	for(i=0; i+63<inputLen; i+=64) {
                for(var j=index; j<64; j++)
			buffer[j] = data.charCodeAt(curpos++);
		sha256_transform();
		index = 0;
	}

	/* Buffer remaining input */
	for(var j=0; j<remainder; j++)
		buffer[j] = data.charCodeAt(curpos++);
}