function bnToString()

in public/amazon-cognito-identity.js [3561:3592]

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

function bnToString(b) {
	if (this.s < 0) return '-' + this.negate().toString();
	var k;
	if (b == 16) k = 4;else if (b == 8) k = 3;else if (b == 2) k = 1;else if (b == 32) k = 5;else if (b == 4) k = 2;else throw new Error('Only radix 2, 4, 8, 16, 32 are supported');
	var km = (1 << k) - 1,
	    d,
	    m = false,
	    r = '',
	    i = this.t;
	var p = this.DB - i * this.DB % k;
	if (i-- > 0) {
		if (p < this.DB && (d = this[i] >> p) > 0) {
			m = true;
			r = int2char(d);
		}
		while (i >= 0) {
			if (p < k) {
				d = (this[i] & (1 << p) - 1) << k - p;
				d |= this[--i] >> (p += this.DB - k);
			} else {
				d = this[i] >> (p -= k) & km;
				if (p <= 0) {
					p += this.DB;
					--i;
				}
			}
			if (d > 0) m = true;
			if (m) r += int2char(d);
		}
	}
	return m ? r : '0';
}