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Diffstat (limited to 'vendor/golang.org/x/text/encoding/japanese/iso2022jp.go')
-rw-r--r--vendor/golang.org/x/text/encoding/japanese/iso2022jp.go299
1 files changed, 0 insertions, 299 deletions
diff --git a/vendor/golang.org/x/text/encoding/japanese/iso2022jp.go b/vendor/golang.org/x/text/encoding/japanese/iso2022jp.go
deleted file mode 100644
index 613226d..0000000
--- a/vendor/golang.org/x/text/encoding/japanese/iso2022jp.go
+++ /dev/null
@@ -1,299 +0,0 @@
-// Copyright 2013 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.
-
-package japanese
-
-import (
- "unicode/utf8"
-
- "golang.org/x/text/encoding"
- "golang.org/x/text/encoding/internal"
- "golang.org/x/text/encoding/internal/identifier"
- "golang.org/x/text/transform"
-)
-
-// ISO2022JP is the ISO-2022-JP encoding.
-var ISO2022JP encoding.Encoding = &iso2022JP
-
-var iso2022JP = internal.Encoding{
- internal.FuncEncoding{iso2022JPNewDecoder, iso2022JPNewEncoder},
- "ISO-2022-JP",
- identifier.ISO2022JP,
-}
-
-func iso2022JPNewDecoder() transform.Transformer {
- return new(iso2022JPDecoder)
-}
-
-func iso2022JPNewEncoder() transform.Transformer {
- return new(iso2022JPEncoder)
-}
-
-const (
- asciiState = iota
- katakanaState
- jis0208State
- jis0212State
-)
-
-const asciiEsc = 0x1b
-
-type iso2022JPDecoder int
-
-func (d *iso2022JPDecoder) Reset() {
- *d = asciiState
-}
-
-func (d *iso2022JPDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
- r, size := rune(0), 0
- for ; nSrc < len(src); nSrc += size {
- c0 := src[nSrc]
- if c0 >= utf8.RuneSelf {
- r, size = '\ufffd', 1
- goto write
- }
-
- if c0 == asciiEsc {
- if nSrc+2 >= len(src) {
- if !atEOF {
- return nDst, nSrc, transform.ErrShortSrc
- }
- // TODO: is it correct to only skip 1??
- r, size = '\ufffd', 1
- goto write
- }
- size = 3
- c1 := src[nSrc+1]
- c2 := src[nSrc+2]
- switch {
- case c1 == '$' && (c2 == '@' || c2 == 'B'): // 0x24 {0x40, 0x42}
- *d = jis0208State
- continue
- case c1 == '$' && c2 == '(': // 0x24 0x28
- if nSrc+3 >= len(src) {
- if !atEOF {
- return nDst, nSrc, transform.ErrShortSrc
- }
- r, size = '\ufffd', 1
- goto write
- }
- size = 4
- if src[nSrc+3] == 'D' {
- *d = jis0212State
- continue
- }
- case c1 == '(' && (c2 == 'B' || c2 == 'J'): // 0x28 {0x42, 0x4A}
- *d = asciiState
- continue
- case c1 == '(' && c2 == 'I': // 0x28 0x49
- *d = katakanaState
- continue
- }
- r, size = '\ufffd', 1
- goto write
- }
-
- switch *d {
- case asciiState:
- r, size = rune(c0), 1
-
- case katakanaState:
- if c0 < 0x21 || 0x60 <= c0 {
- r, size = '\ufffd', 1
- goto write
- }
- r, size = rune(c0)+(0xff61-0x21), 1
-
- default:
- if c0 == 0x0a {
- *d = asciiState
- r, size = rune(c0), 1
- goto write
- }
- if nSrc+1 >= len(src) {
- if !atEOF {
- return nDst, nSrc, transform.ErrShortSrc
- }
- r, size = '\ufffd', 1
- goto write
- }
- size = 2
- c1 := src[nSrc+1]
- i := int(c0-0x21)*94 + int(c1-0x21)
- if *d == jis0208State && i < len(jis0208Decode) {
- r = rune(jis0208Decode[i])
- } else if *d == jis0212State && i < len(jis0212Decode) {
- r = rune(jis0212Decode[i])
- } else {
- r = '\ufffd'
- goto write
- }
- if r == 0 {
- r = '\ufffd'
- }
- }
-
- write:
- if nDst+utf8.RuneLen(r) > len(dst) {
- return nDst, nSrc, transform.ErrShortDst
- }
- nDst += utf8.EncodeRune(dst[nDst:], r)
- }
- return nDst, nSrc, err
-}
-
-type iso2022JPEncoder int
-
-func (e *iso2022JPEncoder) Reset() {
- *e = asciiState
-}
-
-func (e *iso2022JPEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
- r, size := rune(0), 0
- for ; nSrc < len(src); nSrc += size {
- r = rune(src[nSrc])
-
- // Decode a 1-byte rune.
- if r < utf8.RuneSelf {
- size = 1
-
- } else {
- // Decode a multi-byte rune.
- r, size = utf8.DecodeRune(src[nSrc:])
- if size == 1 {
- // All valid runes of size 1 (those below utf8.RuneSelf) were
- // handled above. We have invalid UTF-8 or we haven't seen the
- // full character yet.
- if !atEOF && !utf8.FullRune(src[nSrc:]) {
- err = transform.ErrShortSrc
- break
- }
- }
-
- // func init checks that the switch covers all tables.
- //
- // http://encoding.spec.whatwg.org/#iso-2022-jp says that "the index jis0212
- // is not used by the iso-2022-jp encoder due to lack of widespread support".
- //
- // TODO: do we have to special-case U+00A5 and U+203E, as per
- // http://encoding.spec.whatwg.org/#iso-2022-jp
- // Doing so would mean that "\u00a5" would not be preserved
- // after an encode-decode round trip.
- switch {
- case encode0Low <= r && r < encode0High:
- if r = rune(encode0[r-encode0Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- case encode1Low <= r && r < encode1High:
- if r = rune(encode1[r-encode1Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- case encode2Low <= r && r < encode2High:
- if r = rune(encode2[r-encode2Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- case encode3Low <= r && r < encode3High:
- if r = rune(encode3[r-encode3Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- case encode4Low <= r && r < encode4High:
- if r = rune(encode4[r-encode4Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- case encode5Low <= r && r < encode5High:
- if 0xff61 <= r && r < 0xffa0 {
- goto writeKatakana
- }
- if r = rune(encode5[r-encode5Low]); r>>tableShift == jis0208 {
- goto writeJIS
- }
- }
-
- // Switch back to ASCII state in case of error so that an ASCII
- // replacement character can be written in the correct state.
- if *e != asciiState {
- if nDst+3 > len(dst) {
- err = transform.ErrShortDst
- break
- }
- *e = asciiState
- dst[nDst+0] = asciiEsc
- dst[nDst+1] = '('
- dst[nDst+2] = 'B'
- nDst += 3
- }
- err = internal.ErrASCIIReplacement
- break
- }
-
- if *e != asciiState {
- if nDst+4 > len(dst) {
- err = transform.ErrShortDst
- break
- }
- *e = asciiState
- dst[nDst+0] = asciiEsc
- dst[nDst+1] = '('
- dst[nDst+2] = 'B'
- nDst += 3
- } else if nDst >= len(dst) {
- err = transform.ErrShortDst
- break
- }
- dst[nDst] = uint8(r)
- nDst++
- continue
-
- writeJIS:
- if *e != jis0208State {
- if nDst+5 > len(dst) {
- err = transform.ErrShortDst
- break
- }
- *e = jis0208State
- dst[nDst+0] = asciiEsc
- dst[nDst+1] = '$'
- dst[nDst+2] = 'B'
- nDst += 3
- } else if nDst+2 > len(dst) {
- err = transform.ErrShortDst
- break
- }
- dst[nDst+0] = 0x21 + uint8(r>>codeShift)&codeMask
- dst[nDst+1] = 0x21 + uint8(r)&codeMask
- nDst += 2
- continue
-
- writeKatakana:
- if *e != katakanaState {
- if nDst+4 > len(dst) {
- err = transform.ErrShortDst
- break
- }
- *e = katakanaState
- dst[nDst+0] = asciiEsc
- dst[nDst+1] = '('
- dst[nDst+2] = 'I'
- nDst += 3
- } else if nDst >= len(dst) {
- err = transform.ErrShortDst
- break
- }
- dst[nDst] = uint8(r - (0xff61 - 0x21))
- nDst++
- continue
- }
- if atEOF && err == nil && *e != asciiState {
- if nDst+3 > len(dst) {
- err = transform.ErrShortDst
- } else {
- *e = asciiState
- dst[nDst+0] = asciiEsc
- dst[nDst+1] = '('
- dst[nDst+2] = 'B'
- nDst += 3
- }
- }
- return nDst, nSrc, err
-}