func escapeXml()

in oss/xml_utils.go [189:234]

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

func escapeXml(s string) string {
	var p strings.Builder
	var esc []byte
	hextable := "0123456789ABCDEF"
	escPattern := []byte("�")
	last := 0
	for i := 0; i < len(s); {
		r, width := utf8.DecodeRuneInString(s[i:])
		i += width
		switch r {
		case '"':
			esc = escQuot
		case '\'':
			esc = escApos
		case '&':
			esc = escAmp
		case '<':
			esc = escLT
		case '>':
			esc = escGT
		case '\t':
			esc = escTab
		case '\n':
			esc = escNL
		case '\r':
			esc = escCR
		default:
			if !isInCharacterRange(r) || (r == 0xFFFD && width == 1) {
				if r >= 0x00 && r < 0x20 {
					escPattern[3] = hextable[r>>4]
					escPattern[4] = hextable[r&0x0f]
					esc = escPattern
				} else {
					esc = escFFFD
				}
				break
			}
			continue
		}
		p.WriteString(s[last : i-width])
		p.Write(esc)
		last = i
	}
	p.WriteString(s[last:])
	return p.String()
}