| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| //go:build go1.16 |
| |
| package idna |
| |
| // appendMapping appends the mapping for the respective rune. isMapped must be |
| // true. A mapping is a categorization of a rune as defined in UTS #46. |
| func (c info) appendMapping(b []byte, s string) []byte { |
| index := int(c >> indexShift) |
| if c&xorBit == 0 { |
| p := index |
| return append(b, mappings[mappingIndex[p]:mappingIndex[p+1]]...) |
| } |
| b = append(b, s...) |
| if c&inlineXOR == inlineXOR { |
| // TODO: support and handle two-byte inline masks |
| b[len(b)-1] ^= byte(index) |
| } else { |
| for p := len(b) - int(xorData[index]); p < len(b); p++ { |
| index++ |
| b[p] ^= xorData[index] |
| } |
| } |
| return b |
| } |
