diff options
Diffstat (limited to 'vendor/golang.org/x/text/encoding/unicode')
5 files changed, 0 insertions, 1559 deletions
diff --git a/vendor/golang.org/x/text/encoding/unicode/override.go b/vendor/golang.org/x/text/encoding/unicode/override.go deleted file mode 100644 index 35d62fcc9..000000000 --- a/vendor/golang.org/x/text/encoding/unicode/override.go +++ /dev/null @@ -1,82 +0,0 @@ -// Copyright 2015 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 unicode - -import ( - "golang.org/x/text/transform" -) - -// BOMOverride returns a new decoder transformer that is identical to fallback, -// except that the presence of a Byte Order Mark at the start of the input -// causes it to switch to the corresponding Unicode decoding. It will only -// consider BOMs for UTF-8, UTF-16BE, and UTF-16LE. -// -// This differs from using ExpectBOM by allowing a BOM to switch to UTF-8, not -// just UTF-16 variants, and allowing falling back to any encoding scheme. -// -// This technique is recommended by the W3C for use in HTML 5: "For -// compatibility with deployed content, the byte order mark (also known as BOM) -// is considered more authoritative than anything else." -// http://www.w3.org/TR/encoding/#specification-hooks -// -// Using BOMOverride is mostly intended for use cases where the first characters -// of a fallback encoding are known to not be a BOM, for example, for valid HTML -// and most encodings. -func BOMOverride(fallback transform.Transformer) transform.Transformer { - // TODO: possibly allow a variadic argument of unicode encodings to allow - // specifying details of which fallbacks are supported as well as - // specifying the details of the implementations. This would also allow for - // support for UTF-32, which should not be supported by default. - return &bomOverride{fallback: fallback} -} - -type bomOverride struct { - fallback transform.Transformer - current transform.Transformer -} - -func (d *bomOverride) Reset() { - d.current = nil - d.fallback.Reset() -} - -var ( - // TODO: we could use decode functions here, instead of allocating a new - // decoder on every NewDecoder as IgnoreBOM decoders can be stateless. - utf16le = UTF16(LittleEndian, IgnoreBOM) - utf16be = UTF16(BigEndian, IgnoreBOM) -) - -const utf8BOM = "\ufeff" - -func (d *bomOverride) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - if d.current != nil { - return d.current.Transform(dst, src, atEOF) - } - if len(src) < 3 && !atEOF { - return 0, 0, transform.ErrShortSrc - } - d.current = d.fallback - bomSize := 0 - if len(src) >= 2 { - if src[0] == 0xFF && src[1] == 0xFE { - d.current = utf16le.NewDecoder() - bomSize = 2 - } else if src[0] == 0xFE && src[1] == 0xFF { - d.current = utf16be.NewDecoder() - bomSize = 2 - } else if len(src) >= 3 && - src[0] == utf8BOM[0] && - src[1] == utf8BOM[1] && - src[2] == utf8BOM[2] { - d.current = transform.Nop - bomSize = 3 - } - } - if bomSize < len(src) { - nDst, nSrc, err = d.current.Transform(dst, src[bomSize:], atEOF) - } - return nDst, nSrc + bomSize, err -} diff --git a/vendor/golang.org/x/text/encoding/unicode/unicode.go b/vendor/golang.org/x/text/encoding/unicode/unicode.go deleted file mode 100644 index 579cadfb1..000000000 --- a/vendor/golang.org/x/text/encoding/unicode/unicode.go +++ /dev/null @@ -1,434 +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 unicode provides Unicode encodings such as UTF-16. -package unicode // import "golang.org/x/text/encoding/unicode" - -import ( - "errors" - "unicode/utf16" - "unicode/utf8" - - "golang.org/x/text/encoding" - "golang.org/x/text/encoding/internal" - "golang.org/x/text/encoding/internal/identifier" - "golang.org/x/text/internal/utf8internal" - "golang.org/x/text/runes" - "golang.org/x/text/transform" -) - -// TODO: I think the Transformers really should return errors on unmatched -// surrogate pairs and odd numbers of bytes. This is not required by RFC 2781, -// which leaves it open, but is suggested by WhatWG. It will allow for all error -// modes as defined by WhatWG: fatal, HTML and Replacement. This would require -// the introduction of some kind of error type for conveying the erroneous code -// point. - -// UTF8 is the UTF-8 encoding. -var UTF8 encoding.Encoding = utf8enc - -var utf8enc = &internal.Encoding{ - &internal.SimpleEncoding{utf8Decoder{}, runes.ReplaceIllFormed()}, - "UTF-8", - identifier.UTF8, -} - -type utf8Decoder struct{ transform.NopResetter } - -func (utf8Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - var pSrc int // point from which to start copy in src - var accept utf8internal.AcceptRange - - // The decoder can only make the input larger, not smaller. - n := len(src) - if len(dst) < n { - err = transform.ErrShortDst - n = len(dst) - atEOF = false - } - for nSrc < n { - c := src[nSrc] - if c < utf8.RuneSelf { - nSrc++ - continue - } - first := utf8internal.First[c] - size := int(first & utf8internal.SizeMask) - if first == utf8internal.FirstInvalid { - goto handleInvalid // invalid starter byte - } - accept = utf8internal.AcceptRanges[first>>utf8internal.AcceptShift] - if nSrc+size > n { - if !atEOF { - // We may stop earlier than necessary here if the short sequence - // has invalid bytes. Not checking for this simplifies the code - // and may avoid duplicate computations in certain conditions. - if err == nil { - err = transform.ErrShortSrc - } - break - } - // Determine the maximal subpart of an ill-formed subsequence. - switch { - case nSrc+1 >= n || src[nSrc+1] < accept.Lo || accept.Hi < src[nSrc+1]: - size = 1 - case nSrc+2 >= n || src[nSrc+2] < utf8internal.LoCB || utf8internal.HiCB < src[nSrc+2]: - size = 2 - default: - size = 3 // As we are short, the maximum is 3. - } - goto handleInvalid - } - if c = src[nSrc+1]; c < accept.Lo || accept.Hi < c { - size = 1 - goto handleInvalid // invalid continuation byte - } else if size == 2 { - } else if c = src[nSrc+2]; c < utf8internal.LoCB || utf8internal.HiCB < c { - size = 2 - goto handleInvalid // invalid continuation byte - } else if size == 3 { - } else if c = src[nSrc+3]; c < utf8internal.LoCB || utf8internal.HiCB < c { - size = 3 - goto handleInvalid // invalid continuation byte - } - nSrc += size - continue - - handleInvalid: - // Copy the scanned input so far. - nDst += copy(dst[nDst:], src[pSrc:nSrc]) - - // Append RuneError to the destination. - const runeError = "\ufffd" - if nDst+len(runeError) > len(dst) { - return nDst, nSrc, transform.ErrShortDst - } - nDst += copy(dst[nDst:], runeError) - - // Skip the maximal subpart of an ill-formed subsequence according to - // the W3C standard way instead of the Go way. This Transform is - // probably the only place in the text repo where it is warranted. - nSrc += size - pSrc = nSrc - - // Recompute the maximum source length. - if sz := len(dst) - nDst; sz < len(src)-nSrc { - err = transform.ErrShortDst - n = nSrc + sz - atEOF = false - } - } - return nDst + copy(dst[nDst:], src[pSrc:nSrc]), nSrc, err -} - -// UTF16 returns a UTF-16 Encoding for the given default endianness and byte -// order mark (BOM) policy. -// -// When decoding from UTF-16 to UTF-8, if the BOMPolicy is IgnoreBOM then -// neither BOMs U+FEFF nor noncharacters U+FFFE in the input stream will affect -// the endianness used for decoding, and will instead be output as their -// standard UTF-8 encodings: "\xef\xbb\xbf" and "\xef\xbf\xbe". If the BOMPolicy -// is UseBOM or ExpectBOM a staring BOM is not written to the UTF-8 output. -// Instead, it overrides the default endianness e for the remainder of the -// transformation. Any subsequent BOMs U+FEFF or noncharacters U+FFFE will not -// affect the endianness used, and will instead be output as their standard -// UTF-8 encodings. For UseBOM, if there is no starting BOM, it will proceed -// with the default Endianness. For ExpectBOM, in that case, the transformation -// will return early with an ErrMissingBOM error. -// -// When encoding from UTF-8 to UTF-16, a BOM will be inserted at the start of -// the output if the BOMPolicy is UseBOM or ExpectBOM. Otherwise, a BOM will not -// be inserted. The UTF-8 input does not need to contain a BOM. -// -// There is no concept of a 'native' endianness. If the UTF-16 data is produced -// and consumed in a greater context that implies a certain endianness, use -// IgnoreBOM. Otherwise, use ExpectBOM and always produce and consume a BOM. -// -// In the language of http://www.unicode.org/faq/utf_bom.html#bom10, IgnoreBOM -// corresponds to "Where the precise type of the data stream is known... the -// BOM should not be used" and ExpectBOM corresponds to "A particular -// protocol... may require use of the BOM". -func UTF16(e Endianness, b BOMPolicy) encoding.Encoding { - return utf16Encoding{config{e, b}, mibValue[e][b&bomMask]} -} - -// mibValue maps Endianness and BOMPolicy settings to MIB constants. Note that -// some configurations map to the same MIB identifier. RFC 2781 has requirements -// and recommendations. Some of the "configurations" are merely recommendations, -// so multiple configurations could match. -var mibValue = map[Endianness][numBOMValues]identifier.MIB{ - BigEndian: [numBOMValues]identifier.MIB{ - IgnoreBOM: identifier.UTF16BE, - UseBOM: identifier.UTF16, // BigEnding default is preferred by RFC 2781. - // TODO: acceptBOM | strictBOM would map to UTF16BE as well. - }, - LittleEndian: [numBOMValues]identifier.MIB{ - IgnoreBOM: identifier.UTF16LE, - UseBOM: identifier.UTF16, // LittleEndian default is allowed and preferred on Windows. - // TODO: acceptBOM | strictBOM would map to UTF16LE as well. - }, - // ExpectBOM is not widely used and has no valid MIB identifier. -} - -// All lists a configuration for each IANA-defined UTF-16 variant. -var All = []encoding.Encoding{ - UTF8, - UTF16(BigEndian, UseBOM), - UTF16(BigEndian, IgnoreBOM), - UTF16(LittleEndian, IgnoreBOM), -} - -// BOMPolicy is a UTF-16 encoding's byte order mark policy. -type BOMPolicy uint8 - -const ( - writeBOM BOMPolicy = 0x01 - acceptBOM BOMPolicy = 0x02 - requireBOM BOMPolicy = 0x04 - bomMask BOMPolicy = 0x07 - - // HACK: numBOMValues == 8 triggers a bug in the 1.4 compiler (cannot have a - // map of an array of length 8 of a type that is also used as a key or value - // in another map). See golang.org/issue/11354. - // TODO: consider changing this value back to 8 if the use of 1.4.* has - // been minimized. - numBOMValues = 8 + 1 - - // IgnoreBOM means to ignore any byte order marks. - IgnoreBOM BOMPolicy = 0 - // Common and RFC 2781-compliant interpretation for UTF-16BE/LE. - - // UseBOM means that the UTF-16 form may start with a byte order mark, which - // will be used to override the default encoding. - UseBOM BOMPolicy = writeBOM | acceptBOM - // Common and RFC 2781-compliant interpretation for UTF-16. - - // ExpectBOM means that the UTF-16 form must start with a byte order mark, - // which will be used to override the default encoding. - ExpectBOM BOMPolicy = writeBOM | acceptBOM | requireBOM - // Used in Java as Unicode (not to be confused with Java's UTF-16) and - // ICU's UTF-16,version=1. Not compliant with RFC 2781. - - // TODO (maybe): strictBOM: BOM must match Endianness. This would allow: - // - UTF-16(B|L)E,version=1: writeBOM | acceptBOM | requireBOM | strictBOM - // (UnicodeBig and UnicodeLittle in Java) - // - RFC 2781-compliant, but less common interpretation for UTF-16(B|L)E: - // acceptBOM | strictBOM (e.g. assigned to CheckBOM). - // This addition would be consistent with supporting ExpectBOM. -) - -// Endianness is a UTF-16 encoding's default endianness. -type Endianness bool - -const ( - // BigEndian is UTF-16BE. - BigEndian Endianness = false - // LittleEndian is UTF-16LE. - LittleEndian Endianness = true -) - -// ErrMissingBOM means that decoding UTF-16 input with ExpectBOM did not find a -// starting byte order mark. -var ErrMissingBOM = errors.New("encoding: missing byte order mark") - -type utf16Encoding struct { - config - mib identifier.MIB -} - -type config struct { - endianness Endianness - bomPolicy BOMPolicy -} - -func (u utf16Encoding) NewDecoder() *encoding.Decoder { - return &encoding.Decoder{Transformer: &utf16Decoder{ - initial: u.config, - current: u.config, - }} -} - -func (u utf16Encoding) NewEncoder() *encoding.Encoder { - return &encoding.Encoder{Transformer: &utf16Encoder{ - endianness: u.endianness, - initialBOMPolicy: u.bomPolicy, - currentBOMPolicy: u.bomPolicy, - }} -} - -func (u utf16Encoding) ID() (mib identifier.MIB, other string) { - return u.mib, "" -} - -func (u utf16Encoding) String() string { - e, b := "B", "" - if u.endianness == LittleEndian { - e = "L" - } - switch u.bomPolicy { - case ExpectBOM: - b = "Expect" - case UseBOM: - b = "Use" - case IgnoreBOM: - b = "Ignore" - } - return "UTF-16" + e + "E (" + b + " BOM)" -} - -type utf16Decoder struct { - initial config - current config -} - -func (u *utf16Decoder) Reset() { - u.current = u.initial -} - -func (u *utf16Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - if len(src) == 0 { - if atEOF && u.current.bomPolicy&requireBOM != 0 { - return 0, 0, ErrMissingBOM - } - return 0, 0, nil - } - if u.current.bomPolicy&acceptBOM != 0 { - if len(src) < 2 { - return 0, 0, transform.ErrShortSrc - } - switch { - case src[0] == 0xfe && src[1] == 0xff: - u.current.endianness = BigEndian - nSrc = 2 - case src[0] == 0xff && src[1] == 0xfe: - u.current.endianness = LittleEndian - nSrc = 2 - default: - if u.current.bomPolicy&requireBOM != 0 { - return 0, 0, ErrMissingBOM - } - } - u.current.bomPolicy = IgnoreBOM - } - - var r rune - var dSize, sSize int - for nSrc < len(src) { - if nSrc+1 < len(src) { - x := uint16(src[nSrc+0])<<8 | uint16(src[nSrc+1]) - if u.current.endianness == LittleEndian { - x = x>>8 | x<<8 - } - r, sSize = rune(x), 2 - if utf16.IsSurrogate(r) { - if nSrc+3 < len(src) { - x = uint16(src[nSrc+2])<<8 | uint16(src[nSrc+3]) - if u.current.endianness == LittleEndian { - x = x>>8 | x<<8 - } - // Save for next iteration if it is not a high surrogate. - if isHighSurrogate(rune(x)) { - r, sSize = utf16.DecodeRune(r, rune(x)), 4 - } - } else if !atEOF { - err = transform.ErrShortSrc - break - } - } - if dSize = utf8.RuneLen(r); dSize < 0 { - r, dSize = utf8.RuneError, 3 - } - } else if atEOF { - // Single trailing byte. - r, dSize, sSize = utf8.RuneError, 3, 1 - } else { - err = transform.ErrShortSrc - break - } - if nDst+dSize > len(dst) { - err = transform.ErrShortDst - break - } - nDst += utf8.EncodeRune(dst[nDst:], r) - nSrc += sSize - } - return nDst, nSrc, err -} - -func isHighSurrogate(r rune) bool { - return 0xDC00 <= r && r <= 0xDFFF -} - -type utf16Encoder struct { - endianness Endianness - initialBOMPolicy BOMPolicy - currentBOMPolicy BOMPolicy -} - -func (u *utf16Encoder) Reset() { - u.currentBOMPolicy = u.initialBOMPolicy -} - -func (u *utf16Encoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - if u.currentBOMPolicy&writeBOM != 0 { - if len(dst) < 2 { - return 0, 0, transform.ErrShortDst - } - dst[0], dst[1] = 0xfe, 0xff - u.currentBOMPolicy = IgnoreBOM - nDst = 2 - } - - r, size := rune(0), 0 - for nSrc < len(src) { - 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 - } - } - } - - if r <= 0xffff { - if nDst+2 > len(dst) { - err = transform.ErrShortDst - break - } - dst[nDst+0] = uint8(r >> 8) - dst[nDst+1] = uint8(r) - nDst += 2 - } else { - if nDst+4 > len(dst) { - err = transform.ErrShortDst - break - } - r1, r2 := utf16.EncodeRune(r) - dst[nDst+0] = uint8(r1 >> 8) - dst[nDst+1] = uint8(r1) - dst[nDst+2] = uint8(r2 >> 8) - dst[nDst+3] = uint8(r2) - nDst += 4 - } - nSrc += size - } - - if u.endianness == LittleEndian { - for i := 0; i < nDst; i += 2 { - dst[i], dst[i+1] = dst[i+1], dst[i] - } - } - return nDst, nSrc, err -} diff --git a/vendor/golang.org/x/text/encoding/unicode/unicode_test.go b/vendor/golang.org/x/text/encoding/unicode/unicode_test.go deleted file mode 100644 index 51b4712d8..000000000 --- a/vendor/golang.org/x/text/encoding/unicode/unicode_test.go +++ /dev/null @@ -1,499 +0,0 @@ -// Copyright 2015 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 unicode - -import ( - "testing" - - "golang.org/x/text/encoding" - "golang.org/x/text/encoding/charmap" - "golang.org/x/text/encoding/internal/enctest" - "golang.org/x/text/transform" -) - -func TestBasics(t *testing.T) { - testCases := []struct { - e encoding.Encoding - encPrefix string - encSuffix string - encoded string - utf8 string - }{{ - e: utf16BEIB, - encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65", - utf8: "\x57\u00e4\U0001d565", - }, { - e: utf16BEEB, - encPrefix: "\xfe\xff", - encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65", - utf8: "\x57\u00e4\U0001d565", - }, { - e: utf16LEIB, - encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd", - utf8: "\x57\u00e4\U0001d565", - }, { - e: utf16LEEB, - encPrefix: "\xff\xfe", - encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd", - utf8: "\x57\u00e4\U0001d565", - }} - - for _, tc := range testCases { - enctest.TestEncoding(t, tc.e, tc.encoded, tc.utf8, tc.encPrefix, tc.encSuffix) - } -} - -func TestFiles(t *testing.T) { - enctest.TestFile(t, UTF8) - enctest.TestFile(t, utf16LEIB) -} - -func BenchmarkEncoding(b *testing.B) { - enctest.Benchmark(b, UTF8) - enctest.Benchmark(b, utf16LEIB) -} - -var ( - utf16LEIB = UTF16(LittleEndian, IgnoreBOM) // UTF-16LE (atypical interpretation) - utf16LEUB = UTF16(LittleEndian, UseBOM) // UTF-16, LE - utf16LEEB = UTF16(LittleEndian, ExpectBOM) // UTF-16, LE, Expect - utf16BEIB = UTF16(BigEndian, IgnoreBOM) // UTF-16BE (atypical interpretation) - utf16BEUB = UTF16(BigEndian, UseBOM) // UTF-16 default - utf16BEEB = UTF16(BigEndian, ExpectBOM) // UTF-16 Expect -) - -func TestUTF16(t *testing.T) { - testCases := []struct { - desc string - src string - notEOF bool // the inverse of atEOF - sizeDst int - want string - nSrc int - err error - t transform.Transformer - }{{ - desc: "utf-16 IgnoreBOM dec: empty string", - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16 UseBOM dec: empty string", - t: utf16BEUB.NewDecoder(), - }, { - desc: "utf-16 ExpectBOM dec: empty string", - err: ErrMissingBOM, - t: utf16BEEB.NewDecoder(), - }, { - desc: "utf-16 dec: BOM determines encoding BE (RFC 2781:3.3)", - src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 12, - t: utf16BEUB.NewDecoder(), - }, { - desc: "utf-16 dec: BOM determines encoding LE (RFC 2781:3.3)", - src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 12, - t: utf16LEUB.NewDecoder(), - }, { - desc: "utf-16 dec: BOM determines encoding LE, change default (RFC 2781:3.3)", - src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 12, - t: utf16BEUB.NewDecoder(), - }, { - desc: "utf-16 dec: Fail on missing BOM when required", - src: "\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x00\x52\x00\x61", - sizeDst: 100, - want: "", - nSrc: 0, - err: ErrMissingBOM, - t: utf16BEEB.NewDecoder(), - }, { - desc: "utf-16 dec: SHOULD interpret text as big-endian when BOM not present (RFC 2781:4.3)", - src: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 10, - t: utf16BEUB.NewDecoder(), - }, { - // This is an error according to RFC 2781. But errors in RFC 2781 are - // open to interpretations, so I guess this is fine. - desc: "utf-16le dec: incorrect BOM is an error (RFC 2781:4.1)", - src: "\xFE\xFF\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00", - sizeDst: 100, - want: "\uFFFE\U00012345=Ra", - nSrc: 12, - t: utf16LEIB.NewDecoder(), - }, { - desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00", - nSrc: 7, - t: utf16LEUB.NewEncoder(), - }, { - desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61", - nSrc: 7, - t: utf16BEUB.NewEncoder(), - }, { - desc: "utf-16le enc: MUST NOT write BOM (RFC 2781:3.3)", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00", - nSrc: 7, - t: utf16LEIB.NewEncoder(), - }, { - desc: "utf-16be dec: incorrect UTF-16: odd bytes", - src: "\x00", - sizeDst: 100, - want: "\uFFFD", - nSrc: 1, - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16be dec: unpaired surrogate, odd bytes", - src: "\xD8\x45\x00", - sizeDst: 100, - want: "\uFFFD\uFFFD", - nSrc: 3, - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16be dec: unpaired low surrogate + valid text", - src: "\xD8\x45\x00a", - sizeDst: 100, - want: "\uFFFDa", - nSrc: 4, - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16be dec: unpaired low surrogate + valid text + single byte", - src: "\xD8\x45\x00ab", - sizeDst: 100, - want: "\uFFFDa\uFFFD", - nSrc: 5, - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16le dec: unpaired high surrogate", - src: "\x00\x00\x00\xDC\x12\xD8", - sizeDst: 100, - want: "\x00\uFFFD\uFFFD", - nSrc: 6, - t: utf16LEIB.NewDecoder(), - }, { - desc: "utf-16be dec: two unpaired low surrogates", - src: "\xD8\x45\xD8\x12", - sizeDst: 100, - want: "\uFFFD\uFFFD", - nSrc: 4, - t: utf16BEIB.NewDecoder(), - }, { - desc: "utf-16be dec: short dst", - src: "\x00a", - sizeDst: 0, - want: "", - nSrc: 0, - t: utf16BEIB.NewDecoder(), - err: transform.ErrShortDst, - }, { - desc: "utf-16be dec: short dst surrogate", - src: "\xD8\xF5\xDC\x12", - sizeDst: 3, - want: "", - nSrc: 0, - t: utf16BEIB.NewDecoder(), - err: transform.ErrShortDst, - }, { - desc: "utf-16be dec: short dst trailing byte", - src: "\x00", - sizeDst: 2, - want: "", - nSrc: 0, - t: utf16BEIB.NewDecoder(), - err: transform.ErrShortDst, - }, { - desc: "utf-16be dec: short src", - src: "\x00", - notEOF: true, - sizeDst: 3, - want: "", - nSrc: 0, - t: utf16BEIB.NewDecoder(), - err: transform.ErrShortSrc, - }, { - desc: "utf-16 enc", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61", - nSrc: 7, - t: utf16BEUB.NewEncoder(), - }, { - desc: "utf-16 enc: short dst normal", - src: "\U00012345=Ra", - sizeDst: 9, - want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52", - nSrc: 6, - t: utf16BEIB.NewEncoder(), - err: transform.ErrShortDst, - }, { - desc: "utf-16 enc: short dst surrogate", - src: "\U00012345=Ra", - sizeDst: 3, - want: "", - nSrc: 0, - t: utf16BEIB.NewEncoder(), - err: transform.ErrShortDst, - }, { - desc: "utf-16 enc: short src", - src: "\U00012345=Ra\xC2", - notEOF: true, - sizeDst: 100, - want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61", - nSrc: 7, - t: utf16BEIB.NewEncoder(), - err: transform.ErrShortSrc, - }, { - desc: "utf-16be dec: don't change byte order mid-stream", - src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\xFF\xFE\x00\x52\x00\x61", - sizeDst: 100, - want: "\U00012345=\ufffeRa", - nSrc: 14, - t: utf16BEUB.NewDecoder(), - }, { - desc: "utf-16le dec: don't change byte order mid-stream", - src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x52\x00\x61\x00", - sizeDst: 100, - want: "\U00012345=\ufeff\ufffeRa", - nSrc: 16, - t: utf16LEUB.NewDecoder(), - }} - for i, tc := range testCases { - b := make([]byte, tc.sizeDst) - nDst, nSrc, err := tc.t.Transform(b, []byte(tc.src), !tc.notEOF) - if err != tc.err { - t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err) - } - if got := string(b[:nDst]); got != tc.want { - t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want) - } - if nSrc != tc.nSrc { - t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc) - } - } -} - -func TestUTF8Decoder(t *testing.T) { - testCases := []struct { - desc string - src string - notEOF bool // the inverse of atEOF - sizeDst int - want string - nSrc int - err error - }{{ - desc: "empty string, empty dest buffer", - }, { - desc: "empty string", - sizeDst: 8, - }, { - desc: "empty string, streaming", - notEOF: true, - sizeDst: 8, - }, { - desc: "ascii", - src: "abcde", - sizeDst: 8, - want: "abcde", - nSrc: 5, - }, { - desc: "ascii and error", - src: "ab\x80de", - sizeDst: 7, - want: "ab\ufffdde", - nSrc: 5, - }, { - desc: "valid two-byte sequence", - src: "a\u0300bc", - sizeDst: 7, - want: "a\u0300bc", - nSrc: 5, - }, { - desc: "valid three-byte sequence", - src: "a\u0300中", - sizeDst: 7, - want: "a\u0300中", - nSrc: 6, - }, { - desc: "valid four-byte sequence", - src: "a中\U00016F50", - sizeDst: 8, - want: "a中\U00016F50", - nSrc: 8, - }, { - desc: "short source buffer", - src: "abc\xf0\x90", - notEOF: true, - sizeDst: 10, - want: "abc", - nSrc: 3, - err: transform.ErrShortSrc, - }, { - // We don't check for the maximal subpart of an ill-formed subsequence - // at the end of an open segment. - desc: "complete invalid that looks like short at end", - src: "abc\xf0\x80", - notEOF: true, - sizeDst: 10, - want: "abc", // instead of "abc\ufffd\ufffd", - nSrc: 3, - err: transform.ErrShortSrc, - }, { - desc: "incomplete sequence at end", - src: "a\x80bc\xf0\x90", - sizeDst: 9, - want: "a\ufffdbc\ufffd", - nSrc: 6, - }, { - desc: "invalid second byte", - src: "abc\xf0dddd", - sizeDst: 10, - want: "abc\ufffddddd", - nSrc: 8, - }, { - desc: "invalid second byte at end", - src: "abc\xf0d", - sizeDst: 10, - want: "abc\ufffdd", - nSrc: 5, - }, { - desc: "invalid third byte", - src: "a\u0300bc\xf0\x90dddd", - sizeDst: 12, - want: "a\u0300bc\ufffddddd", - nSrc: 11, - }, { - desc: "invalid third byte at end", - src: "a\u0300bc\xf0\x90d", - sizeDst: 12, - want: "a\u0300bc\ufffdd", - nSrc: 8, - }, { - desc: "invalid fourth byte, tight buffer", - src: "a\u0300bc\xf0\x90\x80d", - sizeDst: 9, - want: "a\u0300bc\ufffdd", - nSrc: 9, - }, { - desc: "invalid fourth byte at end", - src: "a\u0300bc\xf0\x90\x80", - sizeDst: 8, - want: "a\u0300bc\ufffd", - nSrc: 8, - }, { - desc: "invalid fourth byte and short four byte sequence", - src: "a\u0300bc\xf0\x90\x80\xf0\x90\x80", - notEOF: true, - sizeDst: 20, - want: "a\u0300bc\ufffd", - nSrc: 8, - err: transform.ErrShortSrc, - }, { - desc: "valid four-byte sequence overflowing short buffer", - src: "a\u0300bc\xf0\x90\x80\x80", - notEOF: true, - sizeDst: 8, - want: "a\u0300bc", - nSrc: 5, - err: transform.ErrShortDst, - }, { - desc: "invalid fourth byte at end short, but short dst", - src: "a\u0300bc\xf0\x90\x80\xf0\x90\x80", - notEOF: true, - sizeDst: 8, - // More bytes would fit in the buffer, but this seems to require a more - // complicated and slower algorithm. - want: "a\u0300bc", // instead of "a\u0300bc" - nSrc: 5, - err: transform.ErrShortDst, - }, { - desc: "short dst for error", - src: "abc\x80", - notEOF: true, - sizeDst: 5, - want: "abc", - nSrc: 3, - err: transform.ErrShortDst, - }, { - desc: "adjusting short dst buffer", - src: "abc\x80ef", - notEOF: true, - sizeDst: 6, - want: "abc\ufffd", - nSrc: 4, - err: transform.ErrShortDst, - }} - tr := UTF8.NewDecoder() - for i, tc := range testCases { - b := make([]byte, tc.sizeDst) - nDst, nSrc, err := tr.Transform(b, []byte(tc.src), !tc.notEOF) - if err != tc.err { - t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err) - } - if got := string(b[:nDst]); got != tc.want { - t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want) - } - if nSrc != tc.nSrc { - t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc) - } - } -} - -func TestBOMOverride(t *testing.T) { - dec := BOMOverride(charmap.CodePage437.NewDecoder()) - dst := make([]byte, 100) - for i, tc := range []struct { - src string - atEOF bool - dst string - nSrc int - err error - }{ - 0: {"H\x82ll\x93", true, "Héllô", 5, nil}, - 1: {"\uFEFFHéllö", true, "Héllö", 10, nil}, - 2: {"\xFE\xFF\x00H\x00e\x00l\x00l\x00o", true, "Hello", 12, nil}, - 3: {"\xFF\xFEH\x00e\x00l\x00l\x00o\x00", true, "Hello", 12, nil}, - 4: {"\uFEFF", true, "", 3, nil}, - 5: {"\xFE\xFF", true, "", 2, nil}, - 6: {"\xFF\xFE", true, "", 2, nil}, - 7: {"\xEF\xBB", true, "\u2229\u2557", 2, nil}, - 8: {"\xEF", true, "\u2229", 1, nil}, - 9: {"", true, "", 0, nil}, - 10: {"\xFE", true, "\u25a0", 1, nil}, - 11: {"\xFF", true, "\u00a0", 1, nil}, - 12: {"\xEF\xBB", false, "", 0, transform.ErrShortSrc}, - 13: {"\xEF", false, "", 0, transform.ErrShortSrc}, - 14: {"", false, "", 0, transform.ErrShortSrc}, - 15: {"\xFE", false, "", 0, transform.ErrShortSrc}, - 16: {"\xFF", false, "", 0, transform.ErrShortSrc}, - 17: {"\xFF\xFE", false, "", 0, transform.ErrShortSrc}, - } { - dec.Reset() - nDst, nSrc, err := dec.Transform(dst, []byte(tc.src), tc.atEOF) - got := string(dst[:nDst]) - if nSrc != tc.nSrc { - t.Errorf("%d: nSrc: got %d; want %d", i, nSrc, tc.nSrc) - } - if got != tc.dst { - t.Errorf("%d: got %+q; want %+q", i, got, tc.dst) - } - if err != tc.err { - t.Errorf("%d: error: got %v; want %v", i, err, tc.err) - } - } -} diff --git a/vendor/golang.org/x/text/encoding/unicode/utf32/utf32.go b/vendor/golang.org/x/text/encoding/unicode/utf32/utf32.go deleted file mode 100644 index 48b215217..000000000 --- a/vendor/golang.org/x/text/encoding/unicode/utf32/utf32.go +++ /dev/null @@ -1,296 +0,0 @@ -// 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. - -// Package utf32 provides the UTF-32 Unicode encoding. -// -// Please note that support for UTF-32 is discouraged as it is a rare and -// inefficient encoding, unfit for use as an interchange format. For use -// on the web, the W3C strongly discourages its use -// (https://www.w3.org/TR/html5/document-metadata.html#charset) -// while WHATWG directly prohibits supporting it -// (https://html.spec.whatwg.org/multipage/syntax.html#character-encodings). -package utf32 // import "golang.org/x/text/encoding/unicode/utf32" - -import ( - "errors" - "unicode/utf8" - - "golang.org/x/text/encoding" - "golang.org/x/text/encoding/internal/identifier" - "golang.org/x/text/transform" -) - -// All lists a configuration for each IANA-defined UTF-32 variant. -var All = []encoding.Encoding{ - UTF32(BigEndian, UseBOM), - UTF32(BigEndian, IgnoreBOM), - UTF32(LittleEndian, IgnoreBOM), -} - -// ErrMissingBOM means that decoding UTF-32 input with ExpectBOM did not -// find a starting byte order mark. -var ErrMissingBOM = errors.New("encoding: missing byte order mark") - -// UTF32 returns a UTF-32 Encoding for the given default endianness and -// byte order mark (BOM) policy. -// -// When decoding from UTF-32 to UTF-8, if the BOMPolicy is IgnoreBOM then -// neither BOMs U+FEFF nor ill-formed code units 0xFFFE0000 in the input -// stream will affect the endianness used for decoding. Instead BOMs will -// be output as their standard UTF-8 encoding "\xef\xbb\xbf" while -// 0xFFFE0000 code units will be output as "\xef\xbf\xbd", the standard -// UTF-8 encoding for the Unicode replacement character. If the BOMPolicy -// is UseBOM or ExpectBOM a starting BOM is not written to the UTF-8 -// output. Instead, it overrides the default endianness e for the remainder -// of the transformation. Any subsequent BOMs U+FEFF or ill-formed code -// units 0xFFFE0000 will not affect the endianness used, and will instead -// be output as their standard UTF-8 (replacement) encodings. For UseBOM, -// if there is no starting BOM, it will proceed with the default -// Endianness. For ExpectBOM, in that case, the transformation will return -// early with an ErrMissingBOM error. -// -// When encoding from UTF-8 to UTF-32, a BOM will be inserted at the start -// of the output if the BOMPolicy is UseBOM or ExpectBOM. Otherwise, a BOM -// will not be inserted. The UTF-8 input does not need to contain a BOM. -// -// There is no concept of a 'native' endianness. If the UTF-32 data is -// produced and consumed in a greater context that implies a certain -// endianness, use IgnoreBOM. Otherwise, use ExpectBOM and always produce -// and consume a BOM. -// -// In the language of http://www.unicode.org/faq/utf_bom.html#bom10, -// IgnoreBOM corresponds to "Where the precise type of the data stream is -// known... the BOM should not be used" and ExpectBOM corresponds to "A -// particular protocol... may require use of the BOM". -func UTF32(e Endianness, b BOMPolicy) encoding.Encoding { - return utf32Encoding{config{e, b}, mibValue[e][b&bomMask]} -} - -// mibValue maps Endianness and BOMPolicy settings to MIB constants for UTF-32. -// Note that some configurations map to the same MIB identifier. -var mibValue = map[Endianness][numBOMValues]identifier.MIB{ - BigEndian: [numBOMValues]identifier.MIB{ - IgnoreBOM: identifier.UTF32BE, - UseBOM: identifier.UTF32, - }, - LittleEndian: [numBOMValues]identifier.MIB{ - IgnoreBOM: identifier.UTF32LE, - UseBOM: identifier.UTF32, - }, - // ExpectBOM is not widely used and has no valid MIB identifier. -} - -// BOMPolicy is a UTF-32 encodings's byte order mark policy. -type BOMPolicy uint8 - -const ( - writeBOM BOMPolicy = 0x01 - acceptBOM BOMPolicy = 0x02 - requireBOM BOMPolicy = 0x04 - bomMask BOMPolicy = 0x07 - - // HACK: numBOMValues == 8 triggers a bug in the 1.4 compiler (cannot have a - // map of an array of length 8 of a type that is also used as a key or value - // in another map). See golang.org/issue/11354. - // TODO: consider changing this value back to 8 if the use of 1.4.* has - // been minimized. - numBOMValues = 8 + 1 - - // IgnoreBOM means to ignore any byte order marks. - IgnoreBOM BOMPolicy = 0 - // Unicode-compliant interpretation for UTF-32BE/LE. - - // UseBOM means that the UTF-32 form may start with a byte order mark, - // which will be used to override the default encoding. - UseBOM BOMPolicy = writeBOM | acceptBOM - // Unicode-compliant interpretation for UTF-32. - - // ExpectBOM means that the UTF-32 form must start with a byte order mark, - // which will be used to override the default encoding. - ExpectBOM BOMPolicy = writeBOM | acceptBOM | requireBOM - // Consistent with BOMPolicy definition in golang.org/x/text/encoding/unicode -) - -// Endianness is a UTF-32 encoding's default endianness. -type Endianness bool - -const ( - // BigEndian is UTF-32BE. - BigEndian Endianness = false - // LittleEndian is UTF-32LE. - LittleEndian Endianness = true -) - -type config struct { - endianness Endianness - bomPolicy BOMPolicy -} - -type utf32Encoding struct { - config - mib identifier.MIB -} - -func (u utf32Encoding) NewDecoder() *encoding.Decoder { - return &encoding.Decoder{Transformer: &utf32Decoder{ - initial: u.config, - current: u.config, - }} -} - -func (u utf32Encoding) NewEncoder() *encoding.Encoder { - return &encoding.Encoder{Transformer: &utf32Encoder{ - endianness: u.endianness, - initialBOMPolicy: u.bomPolicy, - currentBOMPolicy: u.bomPolicy, - }} -} - -func (u utf32Encoding) ID() (mib identifier.MIB, other string) { - return u.mib, "" -} - -func (u utf32Encoding) String() string { - e, b := "B", "" - if u.endianness == LittleEndian { - e = "L" - } - switch u.bomPolicy { - case ExpectBOM: - b = "Expect" - case UseBOM: - b = "Use" - case IgnoreBOM: - b = "Ignore" - } - return "UTF-32" + e + "E (" + b + " BOM)" -} - -type utf32Decoder struct { - initial config - current config -} - -func (u *utf32Decoder) Reset() { - u.current = u.initial -} - -func (u *utf32Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - if len(src) == 0 { - if atEOF && u.current.bomPolicy&requireBOM != 0 { - return 0, 0, ErrMissingBOM - } - return 0, 0, nil - } - if u.current.bomPolicy&acceptBOM != 0 { - if len(src) < 4 { - return 0, 0, transform.ErrShortSrc - } - switch { - case src[0] == 0x00 && src[1] == 0x00 && src[2] == 0xfe && src[3] == 0xff: - u.current.endianness = BigEndian - nSrc = 4 - case src[0] == 0xff && src[1] == 0xfe && src[2] == 0x00 && src[3] == 0x00: - u.current.endianness = LittleEndian - nSrc = 4 - default: - if u.current.bomPolicy&requireBOM != 0 { - return 0, 0, ErrMissingBOM - } - } - u.current.bomPolicy = IgnoreBOM - } - - var r rune - var dSize, sSize int - for nSrc < len(src) { - if nSrc+3 < len(src) { - x := uint32(src[nSrc+0])<<24 | uint32(src[nSrc+1])<<16 | - uint32(src[nSrc+2])<<8 | uint32(src[nSrc+3]) - if u.current.endianness == LittleEndian { - x = x>>24 | (x >> 8 & 0x0000FF00) | (x << 8 & 0x00FF0000) | x<<24 - } - r, sSize = rune(x), 4 - if dSize = utf8.RuneLen(r); dSize < 0 { - r, dSize = utf8.RuneError, 3 - } - } else if atEOF { - // 1..3 trailing bytes. - r, dSize, sSize = utf8.RuneError, 3, len(src)-nSrc - } else { - err = transform.ErrShortSrc - break - } - if nDst+dSize > len(dst) { - err = transform.ErrShortDst - break - } - nDst += utf8.EncodeRune(dst[nDst:], r) - nSrc += sSize - } - return nDst, nSrc, err -} - -type utf32Encoder struct { - endianness Endianness - initialBOMPolicy BOMPolicy - currentBOMPolicy BOMPolicy -} - -func (u *utf32Encoder) Reset() { - u.currentBOMPolicy = u.initialBOMPolicy -} - -func (u *utf32Encoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { - if u.currentBOMPolicy&writeBOM != 0 { - if len(dst) < 4 { - return 0, 0, transform.ErrShortDst - } - dst[0], dst[1], dst[2], dst[3] = 0x00, 0x00, 0xfe, 0xff - u.currentBOMPolicy = IgnoreBOM - nDst = 4 - } - - r, size := rune(0), 0 - for nSrc < len(src) { - 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 - } - } - } - - if nDst+4 > len(dst) { - err = transform.ErrShortDst - break - } - - dst[nDst+0] = uint8(r >> 24) - dst[nDst+1] = uint8(r >> 16) - dst[nDst+2] = uint8(r >> 8) - dst[nDst+3] = uint8(r) - nDst += 4 - nSrc += size - } - - if u.endianness == LittleEndian { - for i := 0; i < nDst; i += 4 { - dst[i], dst[i+1], dst[i+2], dst[i+3] = dst[i+3], dst[i+2], dst[i+1], dst[i] - } - } - return nDst, nSrc, err -} diff --git a/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go b/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go deleted file mode 100644 index cd6158e5e..000000000 --- a/vendor/golang.org/x/text/encoding/unicode/utf32/utf32_test.go +++ /dev/null @@ -1,248 +0,0 @@ -// 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. - -package utf32 - -import ( - "testing" - - "golang.org/x/text/encoding" - "golang.org/x/text/encoding/internal/enctest" - "golang.org/x/text/transform" -) - -var ( - utf32LEIB = UTF32(LittleEndian, IgnoreBOM) // UTF-32LE (atypical interpretation) - utf32LEUB = UTF32(LittleEndian, UseBOM) // UTF-32, LE - // utf32LEEB = UTF32(LittleEndian, ExpectBOM) // UTF-32, LE, Expect - covered in encoding_test.go - utf32BEIB = UTF32(BigEndian, IgnoreBOM) // UTF-32BE (atypical interpretation) - utf32BEUB = UTF32(BigEndian, UseBOM) // UTF-32 default - utf32BEEB = UTF32(BigEndian, ExpectBOM) // UTF-32 Expect -) - -func TestBasics(t *testing.T) { - testCases := []struct { - e encoding.Encoding - encPrefix string - encSuffix string - encoded string - utf8 string - }{{ - e: utf32BEIB, - encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65", - utf8: "\x57\u00e4\U0001d565", - }, { - e: UTF32(BigEndian, ExpectBOM), - encPrefix: "\x00\x00\xfe\xff", - encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65", - utf8: "\x57\u00e4\U0001d565", - }, { - e: UTF32(LittleEndian, IgnoreBOM), - encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00", - utf8: "\x57\u00e4\U0001d565", - }, { - e: UTF32(LittleEndian, ExpectBOM), - encPrefix: "\xff\xfe\x00\x00", - encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00", - utf8: "\x57\u00e4\U0001d565", - }} - - for _, tc := range testCases { - enctest.TestEncoding(t, tc.e, tc.encoded, tc.utf8, tc.encPrefix, tc.encSuffix) - } -} - -func TestFiles(t *testing.T) { enctest.TestFile(t, utf32BEIB) } - -func BenchmarkEncoding(b *testing.B) { enctest.Benchmark(b, utf32BEIB) } - -func TestUTF32(t *testing.T) { - testCases := []struct { - desc string - src string - notEOF bool // the inverse of atEOF - sizeDst int - want string - nSrc int - err error - t transform.Transformer - }{{ - desc: "utf-32 IgnoreBOM dec: empty string", - t: utf32BEIB.NewDecoder(), - }, { - desc: "utf-32 UseBOM dec: empty string", - t: utf32BEUB.NewDecoder(), - }, { - desc: "utf-32 ExpectBOM dec: empty string", - err: ErrMissingBOM, - t: utf32BEEB.NewDecoder(), - }, { - desc: "utf-32be dec: Doesn't interpret U+FEFF as BOM", - src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\uFEFF\U00012345=Ra", - nSrc: 20, - t: utf32BEIB.NewDecoder(), - }, { - desc: "utf-32be dec: Interprets little endian U+FEFF as invalid", - src: "\xFF\xFE\x00\x00\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\uFFFD\U00012345=Ra", - nSrc: 20, - t: utf32BEIB.NewDecoder(), - }, { - desc: "utf-32le dec: Doesn't interpret U+FEFF as BOM", - src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\uFEFF\U00012345=Ra", - nSrc: 20, - t: utf32LEIB.NewDecoder(), - }, { - desc: "utf-32le dec: Interprets big endian U+FEFF as invalid", - src: "\x00\x00\xFE\xFF\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\uFFFD\U00012345=Ra", - nSrc: 20, - t: utf32LEIB.NewDecoder(), - }, { - desc: "utf-32 enc: Writes big-endian BOM", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - nSrc: 7, - t: utf32BEUB.NewEncoder(), - }, { - desc: "utf-32 enc: Writes little-endian BOM", - src: "\U00012345=Ra", - sizeDst: 100, - want: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - nSrc: 7, - t: utf32LEUB.NewEncoder(), - }, { - desc: "utf-32 dec: Interprets text using big-endian default when BOM not present", - src: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 16, - t: utf32BEUB.NewDecoder(), - }, { - desc: "utf-32 dec: Interprets text using little-endian default when BOM not present", - src: "\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 16, - t: utf32LEUB.NewDecoder(), - }, { - desc: "utf-32 dec: BOM determines encoding BE", - src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 20, - t: utf32BEUB.NewDecoder(), - }, { - desc: "utf-32 dec: BOM determines encoding LE", - src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 20, - t: utf32LEUB.NewDecoder(), - }, { - desc: "utf-32 dec: BOM determines encoding LE, change default", - src: "\xFF\xFE\x00\x00\x45\x23\x01\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 20, - t: utf32BEUB.NewDecoder(), - }, { - desc: "utf-32 dec: BOM determines encoding BE, change default", - src: "\x00\x00\xFE\xFF\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\U00012345=Ra", - nSrc: 20, - t: utf32LEUB.NewDecoder(), - }, { - desc: "utf-32 dec: Don't change big-endian byte order mid-stream", - src: "\x00\x01\x23\x45\x00\x00\x00\x3D\xFF\xFE\x00\x00\x00\x00\xFE\xFF\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "\U00012345=\uFFFD\uFEFFRa", - nSrc: 24, - t: utf32BEUB.NewDecoder(), - }, { - desc: "utf-32 dec: Don't change little-endian byte order mid-stream", - src: "\x45\x23\x01\x00\x3D\x00\x00\x00\x00\x00\xFE\xFF\xFF\xFE\x00\x00\x52\x00\x00\x00\x61\x00\x00\x00", - sizeDst: 100, - want: "\U00012345=\uFFFD\uFEFFRa", - nSrc: 24, - t: utf32LEUB.NewDecoder(), - }, { - desc: "utf-32 dec: Fail on missing BOM when required", - src: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - sizeDst: 100, - want: "", - nSrc: 0, - err: ErrMissingBOM, - t: utf32BEEB.NewDecoder(), - }, { - desc: "utf-32 enc: Short dst", - src: "\U00012345=Ra", - sizeDst: 15, - want: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52", - nSrc: 6, - err: transform.ErrShortDst, - t: utf32BEIB.NewEncoder(), - }, { - desc: "utf-32 enc: Short src", - src: "\U00012345=Ra\xC2", - notEOF: true, - sizeDst: 100, - want: "\x00\x01\x23\x45\x00\x00\x00\x3D\x00\x00\x00\x52\x00\x00\x00\x61", - nSrc: 7, - err: transform.ErrShortSrc, - t: utf32BEIB.NewEncoder(), - }, { - desc: "utf-32 enc: Invalid input", - src: "\x80\xC1\xC2\x7F\xC2", - sizeDst: 100, - want: "\x00\x00\xFF\xFD\x00\x00\xFF\xFD\x00\x00\xFF\xFD\x00\x00\x00\x7F\x00\x00\xFF\xFD", - nSrc: 5, - t: utf32BEIB.NewEncoder(), - }, { - desc: "utf-32 dec: Short dst", - src: "\x00\x00\x00\x41", - sizeDst: 0, - want: "", - nSrc: 0, - err: transform.ErrShortDst, - t: utf32BEIB.NewDecoder(), - }, { - desc: "utf-32 dec: Short src", - src: "\x00\x00\x00", - notEOF: true, - sizeDst: 4, - want: "", - nSrc: 0, - err: transform.ErrShortSrc, - t: utf32BEIB.NewDecoder(), - }, { - desc: "utf-32 dec: Invalid input", - src: "\x00\x00\xD8\x00\x00\x00\xDF\xFF\x00\x11\x00\x00\x00\x00\x00", - sizeDst: 100, - want: "\uFFFD\uFFFD\uFFFD\uFFFD", - nSrc: 15, - t: utf32BEIB.NewDecoder(), - }} - for i, tc := range testCases { - b := make([]byte, tc.sizeDst) - nDst, nSrc, err := tc.t.Transform(b, []byte(tc.src), !tc.notEOF) - if err != tc.err { - t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err) - } - if got := string(b[:nDst]); got != tc.want { - t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want) - } - if nSrc != tc.nSrc { - t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc) - } - } -} |