| 475 | } |
| 476 | |
| 477 | func (d decoder) parseStringUnquote(b []byte, r []byte) ([]byte, []byte, bool, error) { |
| 478 | s, b, k, err := d.parseString(b) |
| 479 | if err != nil { |
| 480 | return s, b, false, err |
| 481 | } |
| 482 | |
| 483 | s = s[1 : len(s)-1] // trim the quotes |
| 484 | |
| 485 | if k == Unescaped { |
| 486 | return s, b, false, nil |
| 487 | } |
| 488 | |
| 489 | if r == nil { |
| 490 | r = make([]byte, 0, len(s)) |
| 491 | } |
| 492 | |
| 493 | for len(s) != 0 { |
| 494 | i := bytes.IndexByte(s, '\\') |
| 495 | |
| 496 | if i < 0 { |
| 497 | r = appendCoerceInvalidUTF8(r, s) |
| 498 | break |
| 499 | } |
| 500 | |
| 501 | r = appendCoerceInvalidUTF8(r, s[:i]) |
| 502 | s = s[i+1:] |
| 503 | |
| 504 | c := s[0] |
| 505 | switch c { |
| 506 | case '"', '\\', '/': |
| 507 | // simple escaped character |
| 508 | case 'n': |
| 509 | c = '\n' |
| 510 | |
| 511 | case 'r': |
| 512 | c = '\r' |
| 513 | |
| 514 | case 't': |
| 515 | c = '\t' |
| 516 | |
| 517 | case 'b': |
| 518 | c = '\b' |
| 519 | |
| 520 | case 'f': |
| 521 | c = '\f' |
| 522 | |
| 523 | case 'u': |
| 524 | s = s[1:] |
| 525 | |
| 526 | r1, n1, err := d.parseUnicode(s) |
| 527 | if err != nil { |
| 528 | return r, b, true, err |
| 529 | } |
| 530 | s = s[n1:] |
| 531 | |
| 532 | if utf16.IsSurrogate(r1) { |
| 533 | if !hasPrefix(s, `\u`) { |
| 534 | r1 = unicode.ReplacementChar |