func()

in flexflate/inflate.go [532:559]

• 27 lines of code
• 7 McCabe index (conditional complexity)

func (f *decompressor) copyHist() bool {
	p := f.hp - f.copyDist
	if p < 0 {
		p += len(f.hist)
	}
	for f.copyLen > 0 {
		n := f.copyLen
		if x := len(f.hist) - f.hp; n > x {
			n = x
		}
		if x := len(f.hist) - p; n > x {
			n = x
		}
		forwardCopy(f.hist[:], f.hp, p, n)
		p += n
		f.hp += n
		f.copyLen -= n
		if f.hp == len(f.hist) {
			// After flush continue copying out of history.
			f.flush((*decompressor).copyHuff)
			return true
		}
		if p == len(f.hist) {
			p = 0
		}
	}
	return false
}