Decode takes a name and undoes any substitutions made by Encode
(in string)
| 684 | |
| 685 | // Decode takes a name and undoes any substitutions made by Encode |
| 686 | func (mask MultiEncoder) Decode(in string) string { |
| 687 | if mask == EncodeRaw { |
| 688 | return in |
| 689 | } |
| 690 | |
| 691 | if mask.Has(EncodeDot) { |
| 692 | switch in { |
| 693 | case "．": |
| 694 | return "." |
| 695 | case "．．": |
| 696 | return ".." |
| 697 | case string(QuoteRune) + "．": |
| 698 | return "．" |
| 699 | case string(QuoteRune) + "．" + string(QuoteRune) + "．": |
| 700 | return "．．" |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | // handle prefix only replacements |
| 705 | prefix := "" |
| 706 | if r, l1 := utf8.DecodeRuneInString(in); mask.Has(EncodeLeftSpace) && r == '␠' { // SYMBOL FOR SPACE |
| 707 | prefix, in = " ", in[l1:] |
| 708 | } else if mask.Has(EncodeLeftPeriod) && r == '．' { // FULLWIDTH FULL STOP |
| 709 | prefix, in = ".", in[l1:] |
| 710 | } else if mask.Has(EncodeLeftTilde) && r == '～' { // FULLWIDTH TILDE |
| 711 | prefix, in = "~", in[l1:] |
| 712 | } else if mask.Has(EncodeLeftCrLfHtVt) && (r == '␀'+'\t' || r == '␀'+'\n' || r == '␀'+'\v' || r == '␀'+'\r') { |
| 713 | prefix, in = string(r-'␀'), in[l1:] |
| 714 | } else if r == QuoteRune { |
| 715 | if r, l2 := utf8.DecodeRuneInString(in[l1:]); mask.Has(EncodeLeftSpace) && r == '␠' { // SYMBOL FOR SPACE |
| 716 | prefix, in = "␠", in[l1+l2:] |
| 717 | } else if mask.Has(EncodeLeftPeriod) && r == '．' { // FULLWIDTH FULL STOP |
| 718 | prefix, in = "．", in[l1+l2:] |
| 719 | } else if mask.Has(EncodeLeftTilde) && r == '～' { // FULLWIDTH TILDE |
| 720 | prefix, in = "～", in[l1+l2:] |
| 721 | } else if mask.Has(EncodeLeftCrLfHtVt) && (r == '␀'+'\t' || r == '␀'+'\n' || r == '␀'+'\v' || r == '␀'+'\r') { |
| 722 | prefix, in = string(r), in[l1+l2:] |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | // handle suffix only replacements |
| 727 | suffix := "" |
| 728 | if r, l := utf8.DecodeLastRuneInString(in); mask.Has(EncodeRightSpace) && r == '␠' { // SYMBOL FOR SPACE |
| 729 | in = in[:len(in)-l] |
| 730 | if q, l2 := utf8.DecodeLastRuneInString(in); q == QuoteRune { |
| 731 | suffix, in = "␠", in[:len(in)-l2] |
| 732 | } else { |
| 733 | suffix = " " |
| 734 | } |
| 735 | } else if mask.Has(EncodeRightPeriod) && r == '．' { // FULLWIDTH FULL STOP |
| 736 | in = in[:len(in)-l] |
| 737 | if q, l2 := utf8.DecodeLastRuneInString(in); q == QuoteRune { |
| 738 | suffix, in = "．", in[:len(in)-l2] |
| 739 | } else { |
| 740 | suffix = "." |
| 741 | } |
| 742 | } else if mask.Has(EncodeRightCrLfHtVt) && (r == '␀'+'\t' || r == '␀'+'\n' || r == '␀'+'\v' || r == '␀'+'\r') { |
| 743 | in = in[:len(in)-l] |
no test coverage detected