(ch byte, escaped bool)
| 33 | } |
| 34 | |
| 35 | func (p *pgparser) readSubstring(ch byte, escaped bool) ([]byte, error) { |
| 36 | ch, err := p.ReadByte() |
| 37 | if err != nil { |
| 38 | return nil, err |
| 39 | } |
| 40 | |
| 41 | p.buf = p.buf[:0] |
| 42 | for { |
| 43 | if ch == '"' { |
| 44 | break |
| 45 | } |
| 46 | |
| 47 | next, err := p.ReadByte() |
| 48 | if err != nil { |
| 49 | return nil, err |
| 50 | } |
| 51 | |
| 52 | if ch == '\\' { |
| 53 | switch next { |
| 54 | case '\\', '"': |
| 55 | p.buf = append(p.buf, next) |
| 56 | |
| 57 | ch, err = p.ReadByte() |
| 58 | if err != nil { |
| 59 | return nil, err |
| 60 | } |
| 61 | default: |
| 62 | p.buf = append(p.buf, '\\') |
| 63 | ch = next |
| 64 | } |
| 65 | continue |
| 66 | } |
| 67 | |
| 68 | if escaped && ch == '\'' && next == '\'' { |
| 69 | p.buf = append(p.buf, next) |
| 70 | ch, err = p.ReadByte() |
| 71 | if err != nil { |
| 72 | return nil, err |
| 73 | } |
| 74 | continue |
| 75 | } |
| 76 | |
| 77 | p.buf = append(p.buf, ch) |
| 78 | ch = next |
| 79 | } |
| 80 | |
| 81 | if bytes.HasPrefix(p.buf, []byte("\\x")) && len(p.buf)%2 == 0 { |
| 82 | data := p.buf[2:] |
| 83 | buf := make([]byte, hex.DecodedLen(len(data))) |
| 84 | n, err := hex.Decode(buf, data) |
| 85 | if err != nil { |
| 86 | return nil, err |
| 87 | } |
| 88 | return buf[:n], nil |
| 89 | } |
| 90 | |
| 91 | return p.buf, nil |
| 92 | } |
no test coverage detected