support `-report-type chardet`

  chardet will detect input sql charset

cmd/soar/soar.go

@@ -133,6 +133,10 @@ func main() {
 		// 注意： 这里只能处理一条 SQL 的 EXPLAIN 信息，用户一次反馈多条 SQL 的 EXPLAIN 信息无法处理
 		advisor.DigestExplainText(sql)
 		return
+	case "chardet":
+		// Get charset of input
+		fmt.Println(common.Chardet([]byte(sql)))
+		return
 	case "remove-comment":
 		fmt.Println(string(database.RemoveSQLComments([]byte(sql))))
 		return

common/chardet.go

+/*
+ * Copyright 2018 Xiaomi, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package common
+
+import (
+	"github.com/saintfish/chardet"
+)
+
+// Chardet get best match charset
+func Chardet(buf []byte) string {
+	detector := chardet.NewTextDetector()
+	result, err := detector.DetectBest(buf)
+	if err != nil {
+		return "unknown"
+	}
+	return result.Charset
+
+}

common/chardet_test.go

+/*
+ * Copyright 2018 Xiaomi, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package common
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func TestChardet(t *testing.T) {
+	charsets := []string{
+		"GB-18030",
+		"UTF-8",
+	}
+	for _, c := range charsets {
+		fileName := DevPath + "/common/testdata/chardet_" + c + ".txt"
+		buf, err := ioutil.ReadFile(fileName)
+		if err != nil {
+			t.Errorf("ioutil.ReadFile %s, Error: %s", fileName, err.Error())
+		}
+		name := Chardet(buf)
+		if name != c {
+			t.Errorf("file: %s, Want: %s, Get: %s", fileName, c, name)
+		}
+	}
+}

common/config.go

@@ -828,6 +828,11 @@ from
 		Description: "去除SQL语句中的注释，支持单行多行注释的去除",
 		Example:     `echo "select/*comment*/ * from film" | soar -report-type remove-comment`,
 	},
+	{
+		Name:        "chardet",
+		Description: "猜测输入的 SQL 使用的字符集",
+		Example:     "echo '中文' | soar -report-type chardet",
+	},
 }
 
 // ListReportTypes 查看所有支持的report-type

common/testdata/TestListReportTypes.golden

@@ -131,3 +131,11 @@ echo "select * from film" | soar -report-type pretty
 ```bash
 echo "select/*comment*/ * from film" | soar -report-type remove-comment
 ```
+## chardet
+* **Description**:猜测输入的 SQL 使用的字符集
+
+* **Example**:
+
+```bash
+echo '中文' | soar -report-type chardet
+```

common/testdata/chardet_BIG5.txt

+¤¤¤å

common/testdata/chardet_GB-18030.txt

+

common/testdata/chardet_UTF-8.txt

+中文

doc/report_type.md

@@ -131,3 +131,11 @@ echo "select * from film" | soar -report-type pretty
 ```bash
 echo "select/*comment*/ * from film" | soar -report-type remove-comment
 ```
+## chardet
+* **Description**:猜测输入的 SQL 使用的字符集
+
+* **Example**:
+
+```bash
+echo '中文' | soar -report-type chardet
+```

vendor/github.com/saintfish/chardet/2022.go

+package chardet
+
+import (
+	"bytes"
+)
+
+type recognizer2022 struct {
+	charset string
+	escapes [][]byte
+}
+
+func (r *recognizer2022) Match(input *recognizerInput) (output recognizerOutput) {
+	return recognizerOutput{
+		Charset:    r.charset,
+		Confidence: r.matchConfidence(input.input),
+	}
+}
+
+func (r *recognizer2022) matchConfidence(input []byte) int {
+	var hits, misses, shifts int
+input:
+	for i := 0; i < len(input); i++ {
+		c := input[i]
+		if c == 0x1B {
+			for _, esc := range r.escapes {
+				if bytes.HasPrefix(input[i+1:], esc) {
+					hits++
+					i += len(esc)
+					continue input
+				}
+			}
+			misses++
+		} else if c == 0x0E || c == 0x0F {
+			shifts++
+		}
+	}
+	if hits == 0 {
+		return 0
+	}
+	quality := (100*hits - 100*misses) / (hits + misses)
+	if hits+shifts < 5 {
+		quality -= (5 - (hits + shifts)) * 10
+	}
+	if quality < 0 {
+		quality = 0
+	}
+	return quality
+}
+
+var escapeSequences_2022JP = [][]byte{
+	{0x24, 0x28, 0x43}, // KS X 1001:1992
+	{0x24, 0x28, 0x44}, // JIS X 212-1990
+	{0x24, 0x40},       // JIS C 6226-1978
+	{0x24, 0x41},       // GB 2312-80
+	{0x24, 0x42},       // JIS X 208-1983
+	{0x26, 0x40},       // JIS X 208 1990, 1997
+	{0x28, 0x42},       // ASCII
+	{0x28, 0x48},       // JIS-Roman
+	{0x28, 0x49},       // Half-width katakana
+	{0x28, 0x4a},       // JIS-Roman
+	{0x2e, 0x41},       // ISO 8859-1
+	{0x2e, 0x46},       // ISO 8859-7
+}
+
+var escapeSequences_2022KR = [][]byte{
+	{0x24, 0x29, 0x43},
+}
+
+var escapeSequences_2022CN = [][]byte{
+	{0x24, 0x29, 0x41}, // GB 2312-80
+	{0x24, 0x29, 0x47}, // CNS 11643-1992 Plane 1
+	{0x24, 0x2A, 0x48}, // CNS 11643-1992 Plane 2
+	{0x24, 0x29, 0x45}, // ISO-IR-165
+	{0x24, 0x2B, 0x49}, // CNS 11643-1992 Plane 3
+	{0x24, 0x2B, 0x4A}, // CNS 11643-1992 Plane 4
+	{0x24, 0x2B, 0x4B}, // CNS 11643-1992 Plane 5
+	{0x24, 0x2B, 0x4C}, // CNS 11643-1992 Plane 6
+	{0x24, 0x2B, 0x4D}, // CNS 11643-1992 Plane 7
+	{0x4e},             // SS2
+	{0x4f},             // SS3
+}
+
+func newRecognizer_2022JP() *recognizer2022 {
+	return &recognizer2022{
+		"ISO-2022-JP",
+		escapeSequences_2022JP,
+	}
+}
+
+func newRecognizer_2022KR() *recognizer2022 {
+	return &recognizer2022{
+		"ISO-2022-KR",
+		escapeSequences_2022KR,
+	}
+}
+
+func newRecognizer_2022CN() *recognizer2022 {
+	return &recognizer2022{
+		"ISO-2022-CN",
+		escapeSequences_2022CN,
+	}
+}

vendor/github.com/saintfish/chardet/AUTHORS

+Sheng Yu (yusheng dot sjtu at gmail dot com)

vendor/github.com/saintfish/chardet/LICENSE

+Copyright (c) 2012 chardet Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+Partial of the Software is derived from ICU project. See icu-license.html for
+license of the derivative portions.

vendor/github.com/saintfish/chardet/README.md

+# chardet
+
+chardet is library to automatically detect
+[charset](http://en.wikipedia.org/wiki/Character_encoding) of texts for [Go
+programming language](http://golang.org/). It's based on the algorithm and data
+in [ICU](http://icu-project.org/)'s implementation.
+
+## Documentation and Usage
+
+See [pkgdoc](http://go.pkgdoc.org/github.com/saintfish/chardet)

vendor/github.com/saintfish/chardet/detector.go

+// Package chardet ports character set detection from ICU.
+package chardet
+
+import (
+	"errors"
+	"sort"
+)
+
+// Result contains all the information that charset detector gives.
+type Result struct {
+	// IANA name of the detected charset.
+	Charset string
+	// IANA name of the detected language. It may be empty for some charsets.
+	Language string
+	// Confidence of the Result. Scale from 1 to 100. The bigger, the more confident.
+	Confidence int
+}
+
+// Detector implements charset detection.
+type Detector struct {
+	recognizers []recognizer
+	stripTag    bool
+}
+
+// List of charset recognizers
+var recognizers = []recognizer{
+	newRecognizer_utf8(),
+	newRecognizer_utf16be(),
+	newRecognizer_utf16le(),
+	newRecognizer_utf32be(),
+	newRecognizer_utf32le(),
+	newRecognizer_8859_1_en(),
+	newRecognizer_8859_1_da(),
+	newRecognizer_8859_1_de(),
+	newRecognizer_8859_1_es(),
+	newRecognizer_8859_1_fr(),
+	newRecognizer_8859_1_it(),
+	newRecognizer_8859_1_nl(),
+	newRecognizer_8859_1_no(),
+	newRecognizer_8859_1_pt(),
+	newRecognizer_8859_1_sv(),
+	newRecognizer_8859_2_cs(),
+	newRecognizer_8859_2_hu(),
+	newRecognizer_8859_2_pl(),
+	newRecognizer_8859_2_ro(),
+	newRecognizer_8859_5_ru(),
+	newRecognizer_8859_6_ar(),
+	newRecognizer_8859_7_el(),
+	newRecognizer_8859_8_I_he(),
+	newRecognizer_8859_8_he(),
+	newRecognizer_windows_1251(),
+	newRecognizer_windows_1256(),
+	newRecognizer_KOI8_R(),
+	newRecognizer_8859_9_tr(),
+
+	newRecognizer_sjis(),
+	newRecognizer_gb_18030(),
+	newRecognizer_euc_jp(),
+	newRecognizer_euc_kr(),
+	newRecognizer_big5(),
+
+	newRecognizer_2022JP(),
+	newRecognizer_2022KR(),
+	newRecognizer_2022CN(),
+
+	newRecognizer_IBM424_he_rtl(),
+	newRecognizer_IBM424_he_ltr(),
+	newRecognizer_IBM420_ar_rtl(),
+	newRecognizer_IBM420_ar_ltr(),
+}
+
+// NewTextDetector creates a Detector for plain text.
+func NewTextDetector() *Detector {
+	return &Detector{recognizers, false}
+}
+
+// NewHtmlDetector creates a Detector for Html.
+func NewHtmlDetector() *Detector {
+	return &Detector{recognizers, true}
+}
+
+var (
+	NotDetectedError = errors.New("Charset not detected.")
+)
+
+// DetectBest returns the Result with highest Confidence.
+func (d *Detector) DetectBest(b []byte) (r *Result, err error) {
+	var all []Result
+	if all, err = d.DetectAll(b); err == nil {
+		r = &all[0]
+	}
+	return
+}
+
+// DetectAll returns all Results which have non-zero Confidence. The Results are sorted by Confidence in descending order.
+func (d *Detector) DetectAll(b []byte) ([]Result, error) {
+	input := newRecognizerInput(b, d.stripTag)
+	outputChan := make(chan recognizerOutput)
+	for _, r := range d.recognizers {
+		go matchHelper(r, input, outputChan)
+	}
+	outputs := make([]recognizerOutput, 0, len(d.recognizers))
+	for i := 0; i < len(d.recognizers); i++ {
+		o := <-outputChan
+		if o.Confidence > 0 {
+			outputs = append(outputs, o)
+		}
+	}
+	if len(outputs) == 0 {
+		return nil, NotDetectedError
+	}
+
+	sort.Sort(recognizerOutputs(outputs))
+	dedupOutputs := make([]Result, 0, len(outputs))
+	foundCharsets := make(map[string]struct{}, len(outputs))
+	for _, o := range outputs {
+		if _, found := foundCharsets[o.Charset]; !found {
+			dedupOutputs = append(dedupOutputs, Result(o))
+			foundCharsets[o.Charset] = struct{}{}
+		}
+	}
+	if len(dedupOutputs) == 0 {
+		return nil, NotDetectedError
+	}
+	return dedupOutputs, nil
+}
+
+func matchHelper(r recognizer, input *recognizerInput, outputChan chan<- recognizerOutput) {
+	outputChan <- r.Match(input)
+}
+
+type recognizerOutputs []recognizerOutput
+
+func (r recognizerOutputs) Len() int           { return len(r) }
+func (r recognizerOutputs) Less(i, j int) bool { return r[i].Confidence > r[j].Confidence }
+func (r recognizerOutputs) Swap(i, j int)      { r[i], r[j] = r[j], r[i] }

vendor/github.com/saintfish/chardet/icu-license.html

+<html>
+
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></meta>
+<title>ICU License - ICU 1.8.1 and later</title>
+</head>
+
+<body BGCOLOR="#ffffff">
+<h2>ICU License - ICU 1.8.1 and later</h2>
+
+<p>COPYRIGHT AND PERMISSION NOTICE</p>
+
+<p>
+Copyright (c) 1995-2012 International Business Machines Corporation and others
+</p>
+<p>
+All rights reserved.
+</p>
+<p>
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, and/or sell
+copies of the Software, and to permit persons
+to whom the Software is furnished to do so, provided that the above
+copyright notice(s) and this permission notice appear in all copies
+of the Software and that both the above copyright notice(s) and this
+permission notice appear in supporting documentation.
+</p>
+<p>
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL
+THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM,
+OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
+RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+USE OR PERFORMANCE OF THIS SOFTWARE.
+</p>
+<p>
+Except as contained in this notice, the name of a copyright holder shall not be
+used in advertising or otherwise to promote the sale, use or other dealings in
+this Software without prior written authorization of the copyright holder.
+</p>
+
+<hr>
+<p><small>
+All trademarks and registered trademarks mentioned herein are the property of their respective owners.
+</small></p>
+</body>
+</html>

vendor/github.com/saintfish/chardet/multi_byte.go

+package chardet
+
+import (
+	"errors"
+	"math"
+)
+
+type recognizerMultiByte struct {
+	charset     string
+	language    string
+	decoder     charDecoder
+	commonChars []uint16
+}
+
+type charDecoder interface {
+	DecodeOneChar([]byte) (c uint16, remain []byte, err error)
+}
+
+func (r *recognizerMultiByte) Match(input *recognizerInput) (output recognizerOutput) {
+	return recognizerOutput{
+		Charset:    r.charset,
+		Language:   r.language,
+		Confidence: r.matchConfidence(input),
+	}
+}
+
+func (r *recognizerMultiByte) matchConfidence(input *recognizerInput) int {
+	raw := input.raw
+	var c uint16
+	var err error
+	var totalCharCount, badCharCount, singleByteCharCount, doubleByteCharCount, commonCharCount int
+	for c, raw, err = r.decoder.DecodeOneChar(raw); len(raw) > 0; c, raw, err = r.decoder.DecodeOneChar(raw) {
+		totalCharCount++
+		if err != nil {
+			badCharCount++
+		} else if c <= 0xFF {
+			singleByteCharCount++
+		} else {
+			doubleByteCharCount++
+			if r.commonChars != nil && binarySearch(r.commonChars, c) {
+				commonCharCount++
+			}
+		}
+		if badCharCount >= 2 && badCharCount*5 >= doubleByteCharCount {
+			return 0
+		}
+	}
+
+	if doubleByteCharCount <= 10 && badCharCount == 0 {
+		if doubleByteCharCount == 0 && totalCharCount < 10 {
+			return 0
+		} else {
+			return 10
+		}
+	}
+
+	if doubleByteCharCount < 20*badCharCount {
+		return 0
+	}
+	if r.commonChars == nil {
+		confidence := 30 + doubleByteCharCount - 20*badCharCount
+		if confidence > 100 {
+			confidence = 100
+		}
+		return confidence
+	}
+	maxVal := math.Log(float64(doubleByteCharCount) / 4)
+	scaleFactor := 90 / maxVal
+	confidence := int(math.Log(float64(commonCharCount)+1)*scaleFactor + 10)
+	if confidence > 100 {
+		confidence = 100
+	}
+	if confidence < 0 {
+		confidence = 0
+	}
+	return confidence
+}
+
+func binarySearch(l []uint16, c uint16) bool {
+	start := 0
+	end := len(l) - 1
+	for start <= end {
+		mid := (start + end) / 2
+		if c == l[mid] {
+			return true
+		} else if c < l[mid] {
+			end = mid - 1
+		} else {
+			start = mid + 1
+		}
+	}
+	return false
+}
+
+var eobError = errors.New("End of input buffer")
+var badCharError = errors.New("Decode a bad char")
+
+type charDecoder_sjis struct {
+}
+
+func (charDecoder_sjis) DecodeOneChar(input []byte) (c uint16, remain []byte, err error) {
+	if len(input) == 0 {
+		return 0, nil, eobError
+	}
+	first := input[0]
+	c = uint16(first)
+	remain = input[1:]
+	if first <= 0x7F || (first > 0xA0 && first <= 0xDF) {
+		return
+	}
+	if len(remain) == 0 {
+		return c, remain, badCharError
+	}
+	second := remain[0]
+	remain = remain[1:]
+	c = c<<8 | uint16(second)
+	if (second >= 0x40 && second <= 0x7F) || (second >= 0x80 && second <= 0xFE) {
+	} else {
+		err = badCharError
+	}
+	return
+}
+
+var commonChars_sjis = []uint16{
+	0x8140, 0x8141, 0x8142, 0x8145, 0x815b, 0x8169, 0x816a, 0x8175, 0x8176, 0x82a0,
+	0x82a2, 0x82a4, 0x82a9, 0x82aa, 0x82ab, 0x82ad, 0x82af, 0x82b1, 0x82b3, 0x82b5,
+	0x82b7, 0x82bd, 0x82be, 0x82c1, 0x82c4, 0x82c5, 0x82c6, 0x82c8, 0x82c9, 0x82cc,
+	0x82cd, 0x82dc, 0x82e0, 0x82e7, 0x82e8, 0x82e9, 0x82ea, 0x82f0, 0x82f1, 0x8341,
+	0x8343, 0x834e, 0x834f, 0x8358, 0x835e, 0x8362, 0x8367, 0x8375, 0x8376, 0x8389,
+	0x838a, 0x838b, 0x838d, 0x8393, 0x8e96, 0x93fa, 0x95aa,
+}
+
+func newRecognizer_sjis() *recognizerMultiByte {
+	return &recognizerMultiByte{
+		"Shift_JIS",
+		"ja",
+		charDecoder_sjis{},
+		commonChars_sjis,
+	}
+}
+
+type charDecoder_euc struct {
+}
+
+func (charDecoder_euc) DecodeOneChar(input []byte) (c uint16, remain []byte, err error) {
+	if len(input) == 0 {
+		return 0, nil, eobError
+	}
+	first := input[0]
+	remain = input[1:]
+	c = uint16(first)
+	if first <= 0x8D {
+		return uint16(first), remain, nil
+	}
+	if len(remain) == 0 {
+		return 0, nil, eobError
+	}
+	second := remain[0]
+	remain = remain[1:]
+	c = c<<8 | uint16(second)
+	if first >= 0xA1 && first <= 0xFE {
+		if second < 0xA1 {
+			err = badCharError
+		}
+		return
+	}
+	if first == 0x8E {
+		if second < 0xA1 {
+			err = badCharError
+		}
+		return
+	}
+	if first == 0x8F {
+		if len(remain) == 0 {
+			return 0, nil, eobError
+		}
+		third := remain[0]
+		remain = remain[1:]
+		c = c<<0 | uint16(third)
+		if third < 0xa1 {
+			err = badCharError
+		}
+	}
+	return
+}
+
+var commonChars_euc_jp = []uint16{
+	0xa1a1, 0xa1a2, 0xa1a3, 0xa1a6, 0xa1bc, 0xa1ca, 0xa1cb, 0xa1d6, 0xa1d7, 0xa4a2,
+	0xa4a4, 0xa4a6, 0xa4a8, 0xa4aa, 0xa4ab, 0xa4ac, 0xa4ad, 0xa4af, 0xa4b1, 0xa4b3,
+	0xa4b5, 0xa4b7, 0xa4b9, 0xa4bb, 0xa4bd, 0xa4bf, 0xa4c0, 0xa4c1, 0xa4c3, 0xa4c4,
+	0xa4c6, 0xa4c7, 0xa4c8, 0xa4c9, 0xa4ca, 0xa4cb, 0xa4ce, 0xa4cf, 0xa4d0, 0xa4de,
+	0xa4df, 0xa4e1, 0xa4e2, 0xa4e4, 0xa4e8, 0xa4e9, 0xa4ea, 0xa4eb, 0xa4ec, 0xa4ef,
+	0xa4f2, 0xa4f3, 0xa5a2, 0xa5a3, 0xa5a4, 0xa5a6, 0xa5a7, 0xa5aa, 0xa5ad, 0xa5af,
+	0xa5b0, 0xa5b3, 0xa5b5, 0xa5b7, 0xa5b8, 0xa5b9, 0xa5bf, 0xa5c3, 0xa5c6, 0xa5c7,
+	0xa5c8, 0xa5c9, 0xa5cb, 0xa5d0, 0xa5d5, 0xa5d6, 0xa5d7, 0xa5de, 0xa5e0, 0xa5e1,
+	0xa5e5, 0xa5e9, 0xa5ea, 0xa5eb, 0xa5ec, 0xa5ed, 0xa5f3, 0xb8a9, 0xb9d4, 0xbaee,
+	0xbbc8, 0xbef0, 0xbfb7, 0xc4ea, 0xc6fc, 0xc7bd, 0xcab8, 0xcaf3, 0xcbdc, 0xcdd1,
+}
+
+var commonChars_euc_kr = []uint16{
+	0xb0a1, 0xb0b3, 0xb0c5, 0xb0cd, 0xb0d4, 0xb0e6, 0xb0ed, 0xb0f8, 0xb0fa, 0xb0fc,
+	0xb1b8, 0xb1b9, 0xb1c7, 0xb1d7, 0xb1e2, 0xb3aa, 0xb3bb, 0xb4c2, 0xb4cf, 0xb4d9,
+	0xb4eb, 0xb5a5, 0xb5b5, 0xb5bf, 0xb5c7, 0xb5e9, 0xb6f3, 0xb7af, 0xb7c2, 0xb7ce,
+	0xb8a6, 0xb8ae, 0xb8b6, 0xb8b8, 0xb8bb, 0xb8e9, 0xb9ab, 0xb9ae, 0xb9cc, 0xb9ce,
+	0xb9fd, 0xbab8, 0xbace, 0xbad0, 0xbaf1, 0xbbe7, 0xbbf3, 0xbbfd, 0xbcad, 0xbcba,
+	0xbcd2, 0xbcf6, 0xbdba, 0xbdc0, 0xbdc3, 0xbdc5, 0xbec6, 0xbec8, 0xbedf, 0xbeee,
+	0xbef8, 0xbefa, 0xbfa1, 0xbfa9, 0xbfc0, 0xbfe4, 0xbfeb, 0xbfec, 0xbff8, 0xc0a7,
+	0xc0af, 0xc0b8, 0xc0ba, 0xc0bb, 0xc0bd, 0xc0c7, 0xc0cc, 0xc0ce, 0xc0cf, 0xc0d6,
+	0xc0da, 0xc0e5, 0xc0fb, 0xc0fc, 0xc1a4, 0xc1a6, 0xc1b6, 0xc1d6, 0xc1df, 0xc1f6,
+	0xc1f8, 0xc4a1, 0xc5cd, 0xc6ae, 0xc7cf, 0xc7d1, 0xc7d2, 0xc7d8, 0xc7e5, 0xc8ad,
+}
+
+func newRecognizer_euc_jp() *recognizerMultiByte {
+	return &recognizerMultiByte{
+		"EUC-JP",
+		"ja",
+		charDecoder_euc{},
+		commonChars_euc_jp,
+	}
+}
+
+func newRecognizer_euc_kr() *recognizerMultiByte {
+	return &recognizerMultiByte{
+		"EUC-KR",
+		"ko",
+		charDecoder_euc{},
+		commonChars_euc_kr,
+	}
+}
+
+type charDecoder_big5 struct {
+}
+
+func (charDecoder_big5) DecodeOneChar(input []byte) (c uint16, remain []byte, err error) {
+	if len(input) == 0 {
+		return 0, nil, eobError
+	}
+	first := input[0]
+	remain = input[1:]
+	c = uint16(first)
+	if first <= 0x7F || first == 0xFF {
+		return
+	}
+	if len(remain) == 0 {
+		return c, nil, eobError
+	}
+	second := remain[0]
+	remain = remain[1:]
+	c = c<<8 | uint16(second)
+	if second < 0x40 || second == 0x7F || second == 0xFF {
+		err = badCharError
+	}
+	return
+}
+
+var commonChars_big5 = []uint16{
+	0xa140, 0xa141, 0xa142, 0xa143, 0xa147, 0xa149, 0xa175, 0xa176, 0xa440, 0xa446,
+	0xa447, 0xa448, 0xa451, 0xa454, 0xa457, 0xa464, 0xa46a, 0xa46c, 0xa477, 0xa4a3,
+	0xa4a4, 0xa4a7, 0xa4c1, 0xa4ce, 0xa4d1, 0xa4df, 0xa4e8, 0xa4fd, 0xa540, 0xa548,
+	0xa558, 0xa569, 0xa5cd, 0xa5e7, 0xa657, 0xa661, 0xa662, 0xa668, 0xa670, 0xa6a8,
+	0xa6b3, 0xa6b9, 0xa6d3, 0xa6db, 0xa6e6, 0xa6f2, 0xa740, 0xa751, 0xa759, 0xa7da,
+	0xa8a3, 0xa8a5, 0xa8ad, 0xa8d1, 0xa8d3, 0xa8e4, 0xa8fc, 0xa9c0, 0xa9d2, 0xa9f3,
+	0xaa6b, 0xaaba, 0xaabe, 0xaacc, 0xaafc, 0xac47, 0xac4f, 0xacb0, 0xacd2, 0xad59,
+	0xaec9, 0xafe0, 0xb0ea, 0xb16f, 0xb2b3, 0xb2c4, 0xb36f, 0xb44c, 0xb44e, 0xb54c,
+	0xb5a5, 0xb5bd, 0xb5d0, 0xb5d8, 0xb671, 0xb7ed, 0xb867, 0xb944, 0xbad8, 0xbb44,
+	0xbba1, 0xbdd1, 0xc2c4, 0xc3b9, 0xc440, 0xc45f,
+}
+
+func newRecognizer_big5() *recognizerMultiByte {
+	return &recognizerMultiByte{
+		"Big5",
+		"zh",
+		charDecoder_big5{},
+		commonChars_big5,
+	}
+}
+
+type charDecoder_gb_18030 struct {
+}
+
+func (charDecoder_gb_18030) DecodeOneChar(input []byte) (c uint16, remain []byte, err error) {
+	if len(input) == 0 {
+		return 0, nil, eobError
+	}
+	first := input[0]
+	remain = input[1:]
+	c = uint16(first)
+	if first <= 0x80 {
+		return
+	}
+	if len(remain) == 0 {
+		return 0, nil, eobError
+	}
+	second := remain[0]
+	remain = remain[1:]
+	c = c<<8 | uint16(second)
+	if first >= 0x81 && first <= 0xFE {
+		if (second >= 0x40 && second <= 0x7E) || (second >= 0x80 && second <= 0xFE) {
+			return
+		}
+
+		if second >= 0x30 && second <= 0x39 {
+			if len(remain) == 0 {
+				return 0, nil, eobError
+			}
+			third := remain[0]
+			remain = remain[1:]
+			if third >= 0x81 && third <= 0xFE {
+				if len(remain) == 0 {
+					return 0, nil, eobError
+				}
+				fourth := remain[0]
+				remain = remain[1:]
+				if fourth >= 0x30 && fourth <= 0x39 {
+					c = c<<16 | uint16(third)<<8 | uint16(fourth)
+					return
+				}
+			}
+		}
+		err = badCharError
+	}
+	return
+}
+
+var commonChars_gb_18030 = []uint16{
+	0xa1a1, 0xa1a2, 0xa1a3, 0xa1a4, 0xa1b0, 0xa1b1, 0xa1f1, 0xa1f3, 0xa3a1, 0xa3ac,
+	0xa3ba, 0xb1a8, 0xb1b8, 0xb1be, 0xb2bb, 0xb3c9, 0xb3f6, 0xb4f3, 0xb5bd, 0xb5c4,
+	0xb5e3, 0xb6af, 0xb6d4, 0xb6e0, 0xb7a2, 0xb7a8, 0xb7bd, 0xb7d6, 0xb7dd, 0xb8b4,
+	0xb8df, 0xb8f6, 0xb9ab, 0xb9c9, 0xb9d8, 0xb9fa, 0xb9fd, 0xbacd, 0xbba7, 0xbbd6,
+	0xbbe1, 0xbbfa, 0xbcbc, 0xbcdb, 0xbcfe, 0xbdcc, 0xbecd, 0xbedd, 0xbfb4, 0xbfc6,
+	0xbfc9, 0xc0b4, 0xc0ed, 0xc1cb, 0xc2db, 0xc3c7, 0xc4dc, 0xc4ea, 0xc5cc, 0xc6f7,
+	0xc7f8, 0xc8ab, 0xc8cb, 0xc8d5, 0xc8e7, 0xc9cf, 0xc9fa, 0xcab1, 0xcab5, 0xcac7,
+	0xcad0, 0xcad6, 0xcaf5, 0xcafd, 0xccec, 0xcdf8, 0xceaa, 0xcec4, 0xced2, 0xcee5,
+	0xcfb5, 0xcfc2, 0xcfd6, 0xd0c2, 0xd0c5, 0xd0d0, 0xd0d4, 0xd1a7, 0xd2aa, 0xd2b2,
+	0xd2b5, 0xd2bb, 0xd2d4, 0xd3c3, 0xd3d0, 0xd3fd, 0xd4c2, 0xd4da, 0xd5e2, 0xd6d0,
+}
+
+func newRecognizer_gb_18030() *recognizerMultiByte {
+	return &recognizerMultiByte{
+		"GB-18030",
+		"zh",
+		charDecoder_gb_18030{},
+		commonChars_gb_18030,
+	}
+}

vendor/github.com/saintfish/chardet/recognizer.go

+package chardet
+
+type recognizer interface {
+	Match(*recognizerInput) recognizerOutput
+}
+
+type recognizerOutput Result
+
+type recognizerInput struct {
+	raw         []byte
+	input       []byte
+	tagStripped bool
+	byteStats   []int
+	hasC1Bytes  bool
+}
+
+func newRecognizerInput(raw []byte, stripTag bool) *recognizerInput {
+	input, stripped := mayStripInput(raw, stripTag)
+	byteStats := computeByteStats(input)
+	return &recognizerInput{
+		raw:         raw,
+		input:       input,
+		tagStripped: stripped,
+		byteStats:   byteStats,
+		hasC1Bytes:  computeHasC1Bytes(byteStats),
+	}
+}
+
+func mayStripInput(raw []byte, stripTag bool) (out []byte, stripped bool) {
+	const inputBufferSize = 8192
+	out = make([]byte, 0, inputBufferSize)
+	var badTags, openTags int32
+	var inMarkup bool = false
+	stripped = false
+	if stripTag {
+		stripped = true
+		for _, c := range raw {
+			if c == '<' {
+				if inMarkup {
+					badTags += 1
+				}
+				inMarkup = true
+				openTags += 1
+			}
+			if !inMarkup {
+				out = append(out, c)
+				if len(out) >= inputBufferSize {
+					break
+				}
+			}
+			if c == '>' {
+				inMarkup = false
+			}
+		}
+	}
+	if openTags < 5 || openTags/5 < badTags || (len(out) < 100 && len(raw) > 600) {
+		limit := len(raw)
+		if limit > inputBufferSize {
+			limit = inputBufferSize
+		}
+		out = make([]byte, limit)
+		copy(out, raw[:limit])
+		stripped = false
+	}
+	return
+}
+
+func computeByteStats(input []byte) []int {
+	r := make([]int, 256)
+	for _, c := range input {
+		r[c] += 1
+	}
+	return r
+}
+
+func computeHasC1Bytes(byteStats []int) bool {
+	for _, count := range byteStats[0x80 : 0x9F+1] {
+		if count > 0 {
+			return true
+		}
+	}
+	return false
+}

vendor/github.com/saintfish/chardet/single_byte.go

+package chardet
+
+// Recognizer for single byte charset family
+type recognizerSingleByte struct {
+	charset          string
+	hasC1ByteCharset string
+	language         string
+	charMap          *[256]byte
+	ngram            *[64]uint32
+}
+
+func (r *recognizerSingleByte) Match(input *recognizerInput) recognizerOutput {
+	var charset string = r.charset
+	if input.hasC1Bytes && len(r.hasC1ByteCharset) > 0 {
+		charset = r.hasC1ByteCharset
+	}
+	return recognizerOutput{
+		Charset:    charset,
+		Language:   r.language,
+		Confidence: r.parseNgram(input.input),
+	}
+}
+
+type ngramState struct {
+	ngram                uint32
+	ignoreSpace          bool
+	ngramCount, ngramHit uint32
+	table                *[64]uint32
+}
+
+func newNgramState(table *[64]uint32) *ngramState {
+	return &ngramState{
+		ngram:       0,
+		ignoreSpace: false,
+		ngramCount:  0,
+		ngramHit:    0,
+		table:       table,
+	}
+}
+
+func (s *ngramState) AddByte(b byte) {
+	const ngramMask = 0xFFFFFF
+	if !(b == 0x20 && s.ignoreSpace) {
+		s.ngram = ((s.ngram << 8) | uint32(b)) & ngramMask
+		s.ignoreSpace = (s.ngram == 0x20)
+		s.ngramCount++
+		if s.lookup() {
+			s.ngramHit++
+		}
+	}
+	s.ignoreSpace = (b == 0x20)
+}
+
+func (s *ngramState) HitRate() float32 {
+	if s.ngramCount == 0 {
+		return 0
+	}
+	return float32(s.ngramHit) / float32(s.ngramCount)
+}
+
+func (s *ngramState) lookup() bool {
+	var index int
+	if s.table[index+32] <= s.ngram {
+		index += 32
+	}
+	if s.table[index+16] <= s.ngram {
+		index += 16
+	}
+	if s.table[index+8] <= s.ngram {
+		index += 8
+	}
+	if s.table[index+4] <= s.ngram {
+		index += 4
+	}
+	if s.table[index+2] <= s.ngram {
+		index += 2
+	}
+	if s.table[index+1] <= s.ngram {
+		index += 1
+	}
+	if s.table[index] > s.ngram {
+		index -= 1
+	}
+	if index < 0 || s.table[index] != s.ngram {
+		return false
+	}
+	return true
+}
+
+func (r *recognizerSingleByte) parseNgram(input []byte) int {
+	state := newNgramState(r.ngram)
+	for _, inChar := range input {
+		c := r.charMap[inChar]
+		if c != 0 {
+			state.AddByte(c)
+		}
+	}
+	state.AddByte(0x20)
+	rate := state.HitRate()
+	if rate > 0.33 {
+		return 98
+	}
+	return int(rate * 300)
+}
+
+var charMap_8859_1 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0xAA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0xB5, 0x20, 0x20,
+	0x20, 0x20, 0xBA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
+}
+
+var ngrams_8859_1_en = [64]uint32{
+	0x206120, 0x20616E, 0x206265, 0x20636F, 0x20666F, 0x206861, 0x206865, 0x20696E, 0x206D61, 0x206F66, 0x207072, 0x207265, 0x207361, 0x207374, 0x207468, 0x20746F,
+	0x207768, 0x616964, 0x616C20, 0x616E20, 0x616E64, 0x617320, 0x617420, 0x617465, 0x617469, 0x642061, 0x642074, 0x652061, 0x652073, 0x652074, 0x656420, 0x656E74,
+	0x657220, 0x657320, 0x666F72, 0x686174, 0x686520, 0x686572, 0x696420, 0x696E20, 0x696E67, 0x696F6E, 0x697320, 0x6E2061, 0x6E2074, 0x6E6420, 0x6E6720, 0x6E7420,
+	0x6F6620, 0x6F6E20, 0x6F7220, 0x726520, 0x727320, 0x732061, 0x732074, 0x736169, 0x737420, 0x742074, 0x746572, 0x746861, 0x746865, 0x74696F, 0x746F20, 0x747320,
+}
+
+var ngrams_8859_1_da = [64]uint32{
+	0x206166, 0x206174, 0x206465, 0x20656E, 0x206572, 0x20666F, 0x206861, 0x206920, 0x206D65, 0x206F67, 0x2070E5, 0x207369, 0x207374, 0x207469, 0x207669, 0x616620,
+	0x616E20, 0x616E64, 0x617220, 0x617420, 0x646520, 0x64656E, 0x646572, 0x646574, 0x652073, 0x656420, 0x656465, 0x656E20, 0x656E64, 0x657220, 0x657265, 0x657320,
+	0x657420, 0x666F72, 0x676520, 0x67656E, 0x676572, 0x696765, 0x696C20, 0x696E67, 0x6B6520, 0x6B6B65, 0x6C6572, 0x6C6967, 0x6C6C65, 0x6D6564, 0x6E6465, 0x6E6520,
+	0x6E6720, 0x6E6765, 0x6F6720, 0x6F6D20, 0x6F7220, 0x70E520, 0x722064, 0x722065, 0x722073, 0x726520, 0x737465, 0x742073, 0x746520, 0x746572, 0x74696C, 0x766572,
+}
+
+var ngrams_8859_1_de = [64]uint32{
+	0x20616E, 0x206175, 0x206265, 0x206461, 0x206465, 0x206469, 0x206569, 0x206765, 0x206861, 0x20696E, 0x206D69, 0x207363, 0x207365, 0x20756E, 0x207665, 0x20766F,
+	0x207765, 0x207A75, 0x626572, 0x636820, 0x636865, 0x636874, 0x646173, 0x64656E, 0x646572, 0x646965, 0x652064, 0x652073, 0x65696E, 0x656974, 0x656E20, 0x657220,
+	0x657320, 0x67656E, 0x68656E, 0x687420, 0x696368, 0x696520, 0x696E20, 0x696E65, 0x697420, 0x6C6963, 0x6C6C65, 0x6E2061, 0x6E2064, 0x6E2073, 0x6E6420, 0x6E6465,
+	0x6E6520, 0x6E6720, 0x6E6765, 0x6E7465, 0x722064, 0x726465, 0x726569, 0x736368, 0x737465, 0x742064, 0x746520, 0x74656E, 0x746572, 0x756E64, 0x756E67, 0x766572,
+}
+
+var ngrams_8859_1_es = [64]uint32{
+	0x206120, 0x206361, 0x20636F, 0x206465, 0x20656C, 0x20656E, 0x206573, 0x20696E, 0x206C61, 0x206C6F, 0x207061, 0x20706F, 0x207072, 0x207175, 0x207265, 0x207365,
+	0x20756E, 0x207920, 0x612063, 0x612064, 0x612065, 0x61206C, 0x612070, 0x616369, 0x61646F, 0x616C20, 0x617220, 0x617320, 0x6369F3, 0x636F6E, 0x646520, 0x64656C,
+	0x646F20, 0x652064, 0x652065, 0x65206C, 0x656C20, 0x656E20, 0x656E74, 0x657320, 0x657374, 0x69656E, 0x69F36E, 0x6C6120, 0x6C6F73, 0x6E2065, 0x6E7465, 0x6F2064,
+	0x6F2065, 0x6F6E20, 0x6F7220, 0x6F7320, 0x706172, 0x717565, 0x726120, 0x726573, 0x732064, 0x732065, 0x732070, 0x736520, 0x746520, 0x746F20, 0x756520, 0xF36E20,
+}
+
+var ngrams_8859_1_fr = [64]uint32{
+	0x206175, 0x20636F, 0x206461, 0x206465, 0x206475, 0x20656E, 0x206574, 0x206C61, 0x206C65, 0x207061, 0x20706F, 0x207072, 0x207175, 0x207365, 0x20736F, 0x20756E,
+	0x20E020, 0x616E74, 0x617469, 0x636520, 0x636F6E, 0x646520, 0x646573, 0x647520, 0x652061, 0x652063, 0x652064, 0x652065, 0x65206C, 0x652070, 0x652073, 0x656E20,
+	0x656E74, 0x657220, 0x657320, 0x657420, 0x657572, 0x696F6E, 0x697320, 0x697420, 0x6C6120, 0x6C6520, 0x6C6573, 0x6D656E, 0x6E2064, 0x6E6520, 0x6E7320, 0x6E7420,
+	0x6F6E20, 0x6F6E74, 0x6F7572, 0x717565, 0x72206C, 0x726520, 0x732061, 0x732064, 0x732065, 0x73206C, 0x732070, 0x742064, 0x746520, 0x74696F, 0x756520, 0x757220,
+}
+
+var ngrams_8859_1_it = [64]uint32{
+	0x20616C, 0x206368, 0x20636F, 0x206465, 0x206469, 0x206520, 0x20696C, 0x20696E, 0x206C61, 0x207065, 0x207072, 0x20756E, 0x612063, 0x612064, 0x612070, 0x612073,
+	0x61746F, 0x636865, 0x636F6E, 0x64656C, 0x646920, 0x652061, 0x652063, 0x652064, 0x652069, 0x65206C, 0x652070, 0x652073, 0x656C20, 0x656C6C, 0x656E74, 0x657220,
+	0x686520, 0x692061, 0x692063, 0x692064, 0x692073, 0x696120, 0x696C20, 0x696E20, 0x696F6E, 0x6C6120, 0x6C6520, 0x6C6920, 0x6C6C61, 0x6E6520, 0x6E6920, 0x6E6F20,
+	0x6E7465, 0x6F2061, 0x6F2064, 0x6F2069, 0x6F2073, 0x6F6E20, 0x6F6E65, 0x706572, 0x726120, 0x726520, 0x736920, 0x746120, 0x746520, 0x746920, 0x746F20, 0x7A696F,
+}
+
+var ngrams_8859_1_nl = [64]uint32{
+	0x20616C, 0x206265, 0x206461, 0x206465, 0x206469, 0x206565, 0x20656E, 0x206765, 0x206865, 0x20696E, 0x206D61, 0x206D65, 0x206F70, 0x207465, 0x207661, 0x207665,
+	0x20766F, 0x207765, 0x207A69, 0x61616E, 0x616172, 0x616E20, 0x616E64, 0x617220, 0x617420, 0x636874, 0x646520, 0x64656E, 0x646572, 0x652062, 0x652076, 0x65656E,
+	0x656572, 0x656E20, 0x657220, 0x657273, 0x657420, 0x67656E, 0x686574, 0x696520, 0x696E20, 0x696E67, 0x697320, 0x6E2062, 0x6E2064, 0x6E2065, 0x6E2068, 0x6E206F,
+	0x6E2076, 0x6E6465, 0x6E6720, 0x6F6E64, 0x6F6F72, 0x6F7020, 0x6F7220, 0x736368, 0x737465, 0x742064, 0x746520, 0x74656E, 0x746572, 0x76616E, 0x766572, 0x766F6F,
+}
+
+var ngrams_8859_1_no = [64]uint32{
+	0x206174, 0x206176, 0x206465, 0x20656E, 0x206572, 0x20666F, 0x206861, 0x206920, 0x206D65, 0x206F67, 0x2070E5, 0x207365, 0x20736B, 0x20736F, 0x207374, 0x207469,
+	0x207669, 0x20E520, 0x616E64, 0x617220, 0x617420, 0x646520, 0x64656E, 0x646574, 0x652073, 0x656420, 0x656E20, 0x656E65, 0x657220, 0x657265, 0x657420, 0x657474,
+	0x666F72, 0x67656E, 0x696B6B, 0x696C20, 0x696E67, 0x6B6520, 0x6B6B65, 0x6C6520, 0x6C6C65, 0x6D6564, 0x6D656E, 0x6E2073, 0x6E6520, 0x6E6720, 0x6E6765, 0x6E6E65,
+	0x6F6720, 0x6F6D20, 0x6F7220, 0x70E520, 0x722073, 0x726520, 0x736F6D, 0x737465, 0x742073, 0x746520, 0x74656E, 0x746572, 0x74696C, 0x747420, 0x747465, 0x766572,
+}
+
+var ngrams_8859_1_pt = [64]uint32{
+	0x206120, 0x20636F, 0x206461, 0x206465, 0x20646F, 0x206520, 0x206573, 0x206D61, 0x206E6F, 0x206F20, 0x207061, 0x20706F, 0x207072, 0x207175, 0x207265, 0x207365,
+	0x20756D, 0x612061, 0x612063, 0x612064, 0x612070, 0x616465, 0x61646F, 0x616C20, 0x617220, 0x617261, 0x617320, 0x636F6D, 0x636F6E, 0x646120, 0x646520, 0x646F20,
+	0x646F73, 0x652061, 0x652064, 0x656D20, 0x656E74, 0x657320, 0x657374, 0x696120, 0x696361, 0x6D656E, 0x6E7465, 0x6E746F, 0x6F2061, 0x6F2063, 0x6F2064, 0x6F2065,
+	0x6F2070, 0x6F7320, 0x706172, 0x717565, 0x726120, 0x726573, 0x732061, 0x732064, 0x732065, 0x732070, 0x737461, 0x746520, 0x746F20, 0x756520, 0xE36F20, 0xE7E36F,
+}
+
+var ngrams_8859_1_sv = [64]uint32{
+	0x206174, 0x206176, 0x206465, 0x20656E, 0x2066F6, 0x206861, 0x206920, 0x20696E, 0x206B6F, 0x206D65, 0x206F63, 0x2070E5, 0x20736B, 0x20736F, 0x207374, 0x207469,
+	0x207661, 0x207669, 0x20E472, 0x616465, 0x616E20, 0x616E64, 0x617220, 0x617474, 0x636820, 0x646520, 0x64656E, 0x646572, 0x646574, 0x656420, 0x656E20, 0x657220,
+	0x657420, 0x66F672, 0x67656E, 0x696C6C, 0x696E67, 0x6B6120, 0x6C6C20, 0x6D6564, 0x6E2073, 0x6E6120, 0x6E6465, 0x6E6720, 0x6E6765, 0x6E696E, 0x6F6368, 0x6F6D20,
+	0x6F6E20, 0x70E520, 0x722061, 0x722073, 0x726120, 0x736B61, 0x736F6D, 0x742073, 0x746120, 0x746520, 0x746572, 0x74696C, 0x747420, 0x766172, 0xE47220, 0xF67220,
+}
+
+func newRecognizer_8859_1(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:          "ISO-8859-1",
+		hasC1ByteCharset: "windows-1252",
+		language:         language,
+		charMap:          &charMap_8859_1,
+		ngram:            ngram,
+	}
+}
+
+func newRecognizer_8859_1_en() *recognizerSingleByte {
+	return newRecognizer_8859_1("en", &ngrams_8859_1_en)
+}
+func newRecognizer_8859_1_da() *recognizerSingleByte {
+	return newRecognizer_8859_1("da", &ngrams_8859_1_da)
+}
+func newRecognizer_8859_1_de() *recognizerSingleByte {
+	return newRecognizer_8859_1("de", &ngrams_8859_1_de)
+}
+func newRecognizer_8859_1_es() *recognizerSingleByte {
+	return newRecognizer_8859_1("es", &ngrams_8859_1_es)
+}
+func newRecognizer_8859_1_fr() *recognizerSingleByte {
+	return newRecognizer_8859_1("fr", &ngrams_8859_1_fr)
+}
+func newRecognizer_8859_1_it() *recognizerSingleByte {
+	return newRecognizer_8859_1("it", &ngrams_8859_1_it)
+}
+func newRecognizer_8859_1_nl() *recognizerSingleByte {
+	return newRecognizer_8859_1("nl", &ngrams_8859_1_nl)
+}
+func newRecognizer_8859_1_no() *recognizerSingleByte {
+	return newRecognizer_8859_1("no", &ngrams_8859_1_no)
+}
+func newRecognizer_8859_1_pt() *recognizerSingleByte {
+	return newRecognizer_8859_1("pt", &ngrams_8859_1_pt)
+}
+func newRecognizer_8859_1_sv() *recognizerSingleByte {
+	return newRecognizer_8859_1("sv", &ngrams_8859_1_sv)
+}
+
+var charMap_8859_2 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0xB1, 0x20, 0xB3, 0x20, 0xB5, 0xB6, 0x20,
+	0x20, 0xB9, 0xBA, 0xBB, 0xBC, 0x20, 0xBE, 0xBF,
+	0x20, 0xB1, 0x20, 0xB3, 0x20, 0xB5, 0xB6, 0xB7,
+	0x20, 0xB9, 0xBA, 0xBB, 0xBC, 0x20, 0xBE, 0xBF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0x20,
+}
+
+var ngrams_8859_2_cs = [64]uint32{
+	0x206120, 0x206279, 0x20646F, 0x206A65, 0x206E61, 0x206E65, 0x206F20, 0x206F64, 0x20706F, 0x207072, 0x2070F8, 0x20726F, 0x207365, 0x20736F, 0x207374, 0x20746F,
+	0x207620, 0x207679, 0x207A61, 0x612070, 0x636520, 0x636820, 0x652070, 0x652073, 0x652076, 0x656D20, 0x656EED, 0x686F20, 0x686F64, 0x697374, 0x6A6520, 0x6B7465,
+	0x6C6520, 0x6C6920, 0x6E6120, 0x6EE920, 0x6EEC20, 0x6EED20, 0x6F2070, 0x6F646E, 0x6F6A69, 0x6F7374, 0x6F7520, 0x6F7661, 0x706F64, 0x706F6A, 0x70726F, 0x70F865,
+	0x736520, 0x736F75, 0x737461, 0x737469, 0x73746E, 0x746572, 0x746EED, 0x746F20, 0x752070, 0xBE6520, 0xE16EED, 0xE9686F, 0xED2070, 0xED2073, 0xED6D20, 0xF86564,
+}
+
+var ngrams_8859_2_hu = [64]uint32{
+	0x206120, 0x20617A, 0x206265, 0x206567, 0x20656C, 0x206665, 0x206861, 0x20686F, 0x206973, 0x206B65, 0x206B69, 0x206BF6, 0x206C65, 0x206D61, 0x206D65, 0x206D69,
+	0x206E65, 0x20737A, 0x207465, 0x20E973, 0x612061, 0x61206B, 0x61206D, 0x612073, 0x616B20, 0x616E20, 0x617A20, 0x62616E, 0x62656E, 0x656779, 0x656B20, 0x656C20,
+	0x656C65, 0x656D20, 0x656E20, 0x657265, 0x657420, 0x657465, 0x657474, 0x677920, 0x686F67, 0x696E74, 0x697320, 0x6B2061, 0x6BF67A, 0x6D6567, 0x6D696E, 0x6E2061,
+	0x6E616B, 0x6E656B, 0x6E656D, 0x6E7420, 0x6F6779, 0x732061, 0x737A65, 0x737A74, 0x737AE1, 0x73E967, 0x742061, 0x747420, 0x74E173, 0x7A6572, 0xE16E20, 0xE97320,
+}
+
+var ngrams_8859_2_pl = [64]uint32{
+	0x20637A, 0x20646F, 0x206920, 0x206A65, 0x206B6F, 0x206D61, 0x206D69, 0x206E61, 0x206E69, 0x206F64, 0x20706F, 0x207072, 0x207369, 0x207720, 0x207769, 0x207779,
+	0x207A20, 0x207A61, 0x612070, 0x612077, 0x616E69, 0x636820, 0x637A65, 0x637A79, 0x646F20, 0x647A69, 0x652070, 0x652073, 0x652077, 0x65207A, 0x65676F, 0x656A20,
+	0x656D20, 0x656E69, 0x676F20, 0x696120, 0x696520, 0x69656A, 0x6B6120, 0x6B6920, 0x6B6965, 0x6D6965, 0x6E6120, 0x6E6961, 0x6E6965, 0x6F2070, 0x6F7761, 0x6F7769,
+	0x706F6C, 0x707261, 0x70726F, 0x70727A, 0x727A65, 0x727A79, 0x7369EA, 0x736B69, 0x737461, 0x776965, 0x796368, 0x796D20, 0x7A6520, 0x7A6965, 0x7A7920, 0xF37720,
+}
+
+var ngrams_8859_2_ro = [64]uint32{
+	0x206120, 0x206163, 0x206361, 0x206365, 0x20636F, 0x206375, 0x206465, 0x206469, 0x206C61, 0x206D61, 0x207065, 0x207072, 0x207365, 0x2073E3, 0x20756E, 0x20BA69,
+	0x20EE6E, 0x612063, 0x612064, 0x617265, 0x617420, 0x617465, 0x617520, 0x636172, 0x636F6E, 0x637520, 0x63E320, 0x646520, 0x652061, 0x652063, 0x652064, 0x652070,
+	0x652073, 0x656120, 0x656920, 0x656C65, 0x656E74, 0x657374, 0x692061, 0x692063, 0x692064, 0x692070, 0x696520, 0x696920, 0x696E20, 0x6C6120, 0x6C6520, 0x6C6F72,
+	0x6C7569, 0x6E6520, 0x6E7472, 0x6F7220, 0x70656E, 0x726520, 0x726561, 0x727520, 0x73E320, 0x746520, 0x747275, 0x74E320, 0x756920, 0x756C20, 0xBA6920, 0xEE6E20,
+}
+
+func newRecognizer_8859_2(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:          "ISO-8859-2",
+		hasC1ByteCharset: "windows-1250",
+		language:         language,
+		charMap:          &charMap_8859_2,
+		ngram:            ngram,
+	}
+}
+
+func newRecognizer_8859_2_cs() *recognizerSingleByte {
+	return newRecognizer_8859_1("cs", &ngrams_8859_2_cs)
+}
+func newRecognizer_8859_2_hu() *recognizerSingleByte {
+	return newRecognizer_8859_1("hu", &ngrams_8859_2_hu)
+}
+func newRecognizer_8859_2_pl() *recognizerSingleByte {
+	return newRecognizer_8859_1("pl", &ngrams_8859_2_pl)
+}
+func newRecognizer_8859_2_ro() *recognizerSingleByte {
+	return newRecognizer_8859_1("ro", &ngrams_8859_2_ro)
+}
+
+var charMap_8859_5 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0x20, 0xFE, 0xFF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
+	0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
+	0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0x20, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0x20, 0xFE, 0xFF,
+}
+
+var ngrams_8859_5_ru = [64]uint32{
+	0x20D220, 0x20D2DE, 0x20D4DE, 0x20D7D0, 0x20D820, 0x20DAD0, 0x20DADE, 0x20DDD0, 0x20DDD5, 0x20DED1, 0x20DFDE, 0x20DFE0, 0x20E0D0, 0x20E1DE, 0x20E1E2, 0x20E2DE,
+	0x20E7E2, 0x20EDE2, 0xD0DDD8, 0xD0E2EC, 0xD3DE20, 0xD5DBEC, 0xD5DDD8, 0xD5E1E2, 0xD5E220, 0xD820DF, 0xD8D520, 0xD8D820, 0xD8EF20, 0xDBD5DD, 0xDBD820, 0xDBECDD,
+	0xDDD020, 0xDDD520, 0xDDD8D5, 0xDDD8EF, 0xDDDE20, 0xDDDED2, 0xDE20D2, 0xDE20DF, 0xDE20E1, 0xDED220, 0xDED2D0, 0xDED3DE, 0xDED920, 0xDEDBEC, 0xDEDC20, 0xDEE1E2,
+	0xDFDEDB, 0xDFE0D5, 0xDFE0D8, 0xDFE0DE, 0xE0D0D2, 0xE0D5D4, 0xE1E2D0, 0xE1E2D2, 0xE1E2D8, 0xE1EF20, 0xE2D5DB, 0xE2DE20, 0xE2DEE0, 0xE2EC20, 0xE7E2DE, 0xEBE520,
+}
+
+func newRecognizer_8859_5(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  "ISO-8859-5",
+		language: language,
+		charMap:  &charMap_8859_5,
+		ngram:    ngram,
+	}
+}
+
+func newRecognizer_8859_5_ru() *recognizerSingleByte {
+	return newRecognizer_8859_5("ru", &ngrams_8859_5_ru)
+}
+
+var charMap_8859_6 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+	0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
+	0xD8, 0xD9, 0xDA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+}
+
+var ngrams_8859_6_ar = [64]uint32{
+	0x20C7E4, 0x20C7E6, 0x20C8C7, 0x20D9E4, 0x20E1EA, 0x20E4E4, 0x20E5E6, 0x20E8C7, 0xC720C7, 0xC7C120, 0xC7CA20, 0xC7D120, 0xC7E420, 0xC7E4C3, 0xC7E4C7, 0xC7E4C8,
+	0xC7E4CA, 0xC7E4CC, 0xC7E4CD, 0xC7E4CF, 0xC7E4D3, 0xC7E4D9, 0xC7E4E2, 0xC7E4E5, 0xC7E4E8, 0xC7E4EA, 0xC7E520, 0xC7E620, 0xC7E6CA, 0xC820C7, 0xC920C7, 0xC920E1,
+	0xC920E4, 0xC920E5, 0xC920E8, 0xCA20C7, 0xCF20C7, 0xCFC920, 0xD120C7, 0xD1C920, 0xD320C7, 0xD920C7, 0xD9E4E9, 0xE1EA20, 0xE420C7, 0xE4C920, 0xE4E920, 0xE4EA20,
+	0xE520C7, 0xE5C720, 0xE5C920, 0xE5E620, 0xE620C7, 0xE720C7, 0xE7C720, 0xE8C7E4, 0xE8E620, 0xE920C7, 0xEA20C7, 0xEA20E5, 0xEA20E8, 0xEAC920, 0xEAD120, 0xEAE620,
+}
+
+func newRecognizer_8859_6(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  "ISO-8859-6",
+		language: language,
+		charMap:  &charMap_8859_6,
+		ngram:    ngram,
+	}
+}
+
+func newRecognizer_8859_6_ar() *recognizerSingleByte {
+	return newRecognizer_8859_6("ar", &ngrams_8859_6_ar)
+}
+
+var charMap_8859_7 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0xA1, 0xA2, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0xDC, 0x20,
+	0xDD, 0xDE, 0xDF, 0x20, 0xFC, 0x20, 0xFD, 0xFE,
+	0xC0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0x20, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xDC, 0xDD, 0xDE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0x20,
+}
+
+var ngrams_8859_7_el = [64]uint32{
+	0x20E1ED, 0x20E1F0, 0x20E3E9, 0x20E4E9, 0x20E5F0, 0x20E720, 0x20EAE1, 0x20ECE5, 0x20EDE1, 0x20EF20, 0x20F0E1, 0x20F0EF, 0x20F0F1, 0x20F3F4, 0x20F3F5, 0x20F4E7,
+	0x20F4EF, 0xDFE120, 0xE120E1, 0xE120F4, 0xE1E920, 0xE1ED20, 0xE1F0FC, 0xE1F220, 0xE3E9E1, 0xE5E920, 0xE5F220, 0xE720F4, 0xE7ED20, 0xE7F220, 0xE920F4, 0xE9E120,
+	0xE9EADE, 0xE9F220, 0xEAE1E9, 0xEAE1F4, 0xECE520, 0xED20E1, 0xED20E5, 0xED20F0, 0xEDE120, 0xEFF220, 0xEFF520, 0xF0EFF5, 0xF0F1EF, 0xF0FC20, 0xF220E1, 0xF220E5,
+	0xF220EA, 0xF220F0, 0xF220F4, 0xF3E520, 0xF3E720, 0xF3F4EF, 0xF4E120, 0xF4E1E9, 0xF4E7ED, 0xF4E7F2, 0xF4E9EA, 0xF4EF20, 0xF4EFF5, 0xF4F9ED, 0xF9ED20, 0xFEED20,
+}
+
+func newRecognizer_8859_7(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:          "ISO-8859-7",
+		hasC1ByteCharset: "windows-1253",
+		language:         language,
+		charMap:          &charMap_8859_7,
+		ngram:            ngram,
+	}
+}
+
+func newRecognizer_8859_7_el() *recognizerSingleByte {
+	return newRecognizer_8859_7("el", &ngrams_8859_7_el)
+}
+
+var charMap_8859_8 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0xB5, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0x20, 0x20, 0x20, 0x20, 0x20,
+}
+
+var ngrams_8859_8_I_he = [64]uint32{
+	0x20E0E5, 0x20E0E7, 0x20E0E9, 0x20E0FA, 0x20E1E9, 0x20E1EE, 0x20E4E0, 0x20E4E5, 0x20E4E9, 0x20E4EE, 0x20E4F2, 0x20E4F9, 0x20E4FA, 0x20ECE0, 0x20ECE4, 0x20EEE0,
+	0x20F2EC, 0x20F9EC, 0xE0FA20, 0xE420E0, 0xE420E1, 0xE420E4, 0xE420EC, 0xE420EE, 0xE420F9, 0xE4E5E0, 0xE5E020, 0xE5ED20, 0xE5EF20, 0xE5F820, 0xE5FA20, 0xE920E4,
+	0xE9E420, 0xE9E5FA, 0xE9E9ED, 0xE9ED20, 0xE9EF20, 0xE9F820, 0xE9FA20, 0xEC20E0, 0xEC20E4, 0xECE020, 0xECE420, 0xED20E0, 0xED20E1, 0xED20E4, 0xED20EC, 0xED20EE,
+	0xED20F9, 0xEEE420, 0xEF20E4, 0xF0E420, 0xF0E920, 0xF0E9ED, 0xF2EC20, 0xF820E4, 0xF8E9ED, 0xF9EC20, 0xFA20E0, 0xFA20E1, 0xFA20E4, 0xFA20EC, 0xFA20EE, 0xFA20F9,
+}
+
+var ngrams_8859_8_he = [64]uint32{
+	0x20E0E5, 0x20E0EC, 0x20E4E9, 0x20E4EC, 0x20E4EE, 0x20E4F0, 0x20E9F0, 0x20ECF2, 0x20ECF9, 0x20EDE5, 0x20EDE9, 0x20EFE5, 0x20EFE9, 0x20F8E5, 0x20F8E9, 0x20FAE0,
+	0x20FAE5, 0x20FAE9, 0xE020E4, 0xE020EC, 0xE020ED, 0xE020FA, 0xE0E420, 0xE0E5E4, 0xE0EC20, 0xE0EE20, 0xE120E4, 0xE120ED, 0xE120FA, 0xE420E4, 0xE420E9, 0xE420EC,
+	0xE420ED, 0xE420EF, 0xE420F8, 0xE420FA, 0xE4EC20, 0xE5E020, 0xE5E420, 0xE7E020, 0xE9E020, 0xE9E120, 0xE9E420, 0xEC20E4, 0xEC20ED, 0xEC20FA, 0xECF220, 0xECF920,
+	0xEDE9E9, 0xEDE9F0, 0xEDE9F8, 0xEE20E4, 0xEE20ED, 0xEE20FA, 0xEEE120, 0xEEE420, 0xF2E420, 0xF920E4, 0xF920ED, 0xF920FA, 0xF9E420, 0xFAE020, 0xFAE420, 0xFAE5E9,
+}
+
+func newRecognizer_8859_8(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:          "ISO-8859-8",
+		hasC1ByteCharset: "windows-1255",
+		language:         language,
+		charMap:          &charMap_8859_8,
+		ngram:            ngram,
+	}
+}
+
+func newRecognizer_8859_8_I_he() *recognizerSingleByte {
+	r := newRecognizer_8859_8("he", &ngrams_8859_8_I_he)
+	r.charset = "ISO-8859-8-I"
+	return r
+}
+
+func newRecognizer_8859_8_he() *recognizerSingleByte {
+	return newRecognizer_8859_8("he", &ngrams_8859_8_he)
+}
+
+var charMap_8859_9 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0xAA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0xB5, 0x20, 0x20,
+	0x20, 0x20, 0xBA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0x69, 0xFE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0x20,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
+}
+
+var ngrams_8859_9_tr = [64]uint32{
+	0x206261, 0x206269, 0x206275, 0x206461, 0x206465, 0x206765, 0x206861, 0x20696C, 0x206B61, 0x206B6F, 0x206D61, 0x206F6C, 0x207361, 0x207461, 0x207665, 0x207961,
+	0x612062, 0x616B20, 0x616C61, 0x616D61, 0x616E20, 0x616EFD, 0x617220, 0x617261, 0x6172FD, 0x6173FD, 0x617961, 0x626972, 0x646120, 0x646520, 0x646920, 0x652062,
+	0x65206B, 0x656469, 0x656E20, 0x657220, 0x657269, 0x657369, 0x696C65, 0x696E20, 0x696E69, 0x697220, 0x6C616E, 0x6C6172, 0x6C6520, 0x6C6572, 0x6E2061, 0x6E2062,
+	0x6E206B, 0x6E6461, 0x6E6465, 0x6E6520, 0x6E6920, 0x6E696E, 0x6EFD20, 0x72696E, 0x72FD6E, 0x766520, 0x796120, 0x796F72, 0xFD6E20, 0xFD6E64, 0xFD6EFD, 0xFDF0FD,
+}
+
+func newRecognizer_8859_9(language string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:          "ISO-8859-9",
+		hasC1ByteCharset: "windows-1254",
+		language:         language,
+		charMap:          &charMap_8859_9,
+		ngram:            ngram,
+	}
+}
+
+func newRecognizer_8859_9_tr() *recognizerSingleByte {
+	return newRecognizer_8859_9("tr", &ngrams_8859_9_tr)
+}
+
+var charMap_windows_1256 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x81, 0x20, 0x83, 0x20, 0x20, 0x20, 0x20,
+	0x88, 0x20, 0x8A, 0x20, 0x9C, 0x8D, 0x8E, 0x8F,
+	0x90, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x98, 0x20, 0x9A, 0x20, 0x9C, 0x20, 0x20, 0x9F,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0xAA, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0xB5, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+	0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0x20,
+	0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0x20, 0x20, 0x20, 0x20, 0xF4, 0x20, 0x20, 0x20,
+	0x20, 0xF9, 0x20, 0xFB, 0xFC, 0x20, 0x20, 0xFF,
+}
+
+var ngrams_windows_1256 = [64]uint32{
+	0x20C7E1, 0x20C7E4, 0x20C8C7, 0x20DAE1, 0x20DDED, 0x20E1E1, 0x20E3E4, 0x20E6C7, 0xC720C7, 0xC7C120, 0xC7CA20, 0xC7D120, 0xC7E120, 0xC7E1C3, 0xC7E1C7, 0xC7E1C8,
+	0xC7E1CA, 0xC7E1CC, 0xC7E1CD, 0xC7E1CF, 0xC7E1D3, 0xC7E1DA, 0xC7E1DE, 0xC7E1E3, 0xC7E1E6, 0xC7E1ED, 0xC7E320, 0xC7E420, 0xC7E4CA, 0xC820C7, 0xC920C7, 0xC920DD,
+	0xC920E1, 0xC920E3, 0xC920E6, 0xCA20C7, 0xCF20C7, 0xCFC920, 0xD120C7, 0xD1C920, 0xD320C7, 0xDA20C7, 0xDAE1EC, 0xDDED20, 0xE120C7, 0xE1C920, 0xE1EC20, 0xE1ED20,
+	0xE320C7, 0xE3C720, 0xE3C920, 0xE3E420, 0xE420C7, 0xE520C7, 0xE5C720, 0xE6C7E1, 0xE6E420, 0xEC20C7, 0xED20C7, 0xED20E3, 0xED20E6, 0xEDC920, 0xEDD120, 0xEDE420,
+}
+
+func newRecognizer_windows_1256() *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  "windows-1256",
+		language: "ar",
+		charMap:  &charMap_windows_1256,
+		ngram:    &ngrams_windows_1256,
+	}
+}
+
+var charMap_windows_1251 = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x90, 0x83, 0x20, 0x83, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x9A, 0x20, 0x9C, 0x9D, 0x9E, 0x9F,
+	0x90, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x9A, 0x20, 0x9C, 0x9D, 0x9E, 0x9F,
+	0x20, 0xA2, 0xA2, 0xBC, 0x20, 0xB4, 0x20, 0x20,
+	0xB8, 0x20, 0xBA, 0x20, 0x20, 0x20, 0x20, 0xBF,
+	0x20, 0x20, 0xB3, 0xB3, 0xB4, 0xB5, 0x20, 0x20,
+	0xB8, 0x20, 0xBA, 0x20, 0xBC, 0xBE, 0xBE, 0xBF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
+	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+	0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
+}
+
+var ngrams_windows_1251 = [64]uint32{
+	0x20E220, 0x20E2EE, 0x20E4EE, 0x20E7E0, 0x20E820, 0x20EAE0, 0x20EAEE, 0x20EDE0, 0x20EDE5, 0x20EEE1, 0x20EFEE, 0x20EFF0, 0x20F0E0, 0x20F1EE, 0x20F1F2, 0x20F2EE,
+	0x20F7F2, 0x20FDF2, 0xE0EDE8, 0xE0F2FC, 0xE3EE20, 0xE5EBFC, 0xE5EDE8, 0xE5F1F2, 0xE5F220, 0xE820EF, 0xE8E520, 0xE8E820, 0xE8FF20, 0xEBE5ED, 0xEBE820, 0xEBFCED,
+	0xEDE020, 0xEDE520, 0xEDE8E5, 0xEDE8FF, 0xEDEE20, 0xEDEEE2, 0xEE20E2, 0xEE20EF, 0xEE20F1, 0xEEE220, 0xEEE2E0, 0xEEE3EE, 0xEEE920, 0xEEEBFC, 0xEEEC20, 0xEEF1F2,
+	0xEFEEEB, 0xEFF0E5, 0xEFF0E8, 0xEFF0EE, 0xF0E0E2, 0xF0E5E4, 0xF1F2E0, 0xF1F2E2, 0xF1F2E8, 0xF1FF20, 0xF2E5EB, 0xF2EE20, 0xF2EEF0, 0xF2FC20, 0xF7F2EE, 0xFBF520,
+}
+
+func newRecognizer_windows_1251() *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  "windows-1251",
+		language: "ar",
+		charMap:  &charMap_windows_1251,
+		ngram:    &ngrams_windows_1251,
+	}
+}
+
+var charMap_KOI8_R = [256]byte{
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7A, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0xA3, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0xA3, 0x20, 0x20, 0x20, 0x20,
+	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+	0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
+	0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+	0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+	0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
+	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
+	0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+}
+
+var ngrams_KOI8_R = [64]uint32{
+	0x20C4CF, 0x20C920, 0x20CBC1, 0x20CBCF, 0x20CEC1, 0x20CEC5, 0x20CFC2, 0x20D0CF, 0x20D0D2, 0x20D2C1, 0x20D3CF, 0x20D3D4, 0x20D4CF, 0x20D720, 0x20D7CF, 0x20DAC1,
+	0x20DCD4, 0x20DED4, 0xC1CEC9, 0xC1D4D8, 0xC5CCD8, 0xC5CEC9, 0xC5D3D4, 0xC5D420, 0xC7CF20, 0xC920D0, 0xC9C520, 0xC9C920, 0xC9D120, 0xCCC5CE, 0xCCC920, 0xCCD8CE,
+	0xCEC120, 0xCEC520, 0xCEC9C5, 0xCEC9D1, 0xCECF20, 0xCECFD7, 0xCF20D0, 0xCF20D3, 0xCF20D7, 0xCFC7CF, 0xCFCA20, 0xCFCCD8, 0xCFCD20, 0xCFD3D4, 0xCFD720, 0xCFD7C1,
+	0xD0CFCC, 0xD0D2C5, 0xD0D2C9, 0xD0D2CF, 0xD2C1D7, 0xD2C5C4, 0xD3D120, 0xD3D4C1, 0xD3D4C9, 0xD3D4D7, 0xD4C5CC, 0xD4CF20, 0xD4CFD2, 0xD4D820, 0xD9C820, 0xDED4CF,
+}
+
+func newRecognizer_KOI8_R() *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  "KOI8-R",
+		language: "ru",
+		charMap:  &charMap_KOI8_R,
+		ngram:    &ngrams_KOI8_R,
+	}
+}
+
+var charMap_IBM424_he = [256]byte{
+	/*        -0    -1    -2    -3    -4    -5    -6    -7    -8    -9    -A    -B    -C    -D    -E    -F   */
+	/* 0- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 1- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 2- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 3- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 4- */ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 5- */ 0x40, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 6- */ 0x40, 0x40, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 7- */ 0x40, 0x71, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x40, 0x40,
+	/* 8- */ 0x40, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 9- */ 0x40, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* A- */ 0xA0, 0x40, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* B- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* C- */ 0x40, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* D- */ 0x40, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* E- */ 0x40, 0x40, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* F- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+}
+
+var ngrams_IBM424_he_rtl = [64]uint32{
+	0x404146, 0x404148, 0x404151, 0x404171, 0x404251, 0x404256, 0x404541, 0x404546, 0x404551, 0x404556, 0x404562, 0x404569, 0x404571, 0x405441, 0x405445, 0x405641,
+	0x406254, 0x406954, 0x417140, 0x454041, 0x454042, 0x454045, 0x454054, 0x454056, 0x454069, 0x454641, 0x464140, 0x465540, 0x465740, 0x466840, 0x467140, 0x514045,
+	0x514540, 0x514671, 0x515155, 0x515540, 0x515740, 0x516840, 0x517140, 0x544041, 0x544045, 0x544140, 0x544540, 0x554041, 0x554042, 0x554045, 0x554054, 0x554056,
+	0x554069, 0x564540, 0x574045, 0x584540, 0x585140, 0x585155, 0x625440, 0x684045, 0x685155, 0x695440, 0x714041, 0x714042, 0x714045, 0x714054, 0x714056, 0x714069,
+}
+
+var ngrams_IBM424_he_ltr = [64]uint32{
+	0x404146, 0x404154, 0x404551, 0x404554, 0x404556, 0x404558, 0x405158, 0x405462, 0x405469, 0x405546, 0x405551, 0x405746, 0x405751, 0x406846, 0x406851, 0x407141,
+	0x407146, 0x407151, 0x414045, 0x414054, 0x414055, 0x414071, 0x414540, 0x414645, 0x415440, 0x415640, 0x424045, 0x424055, 0x424071, 0x454045, 0x454051, 0x454054,
+	0x454055, 0x454057, 0x454068, 0x454071, 0x455440, 0x464140, 0x464540, 0x484140, 0x514140, 0x514240, 0x514540, 0x544045, 0x544055, 0x544071, 0x546240, 0x546940,
+	0x555151, 0x555158, 0x555168, 0x564045, 0x564055, 0x564071, 0x564240, 0x564540, 0x624540, 0x694045, 0x694055, 0x694071, 0x694540, 0x714140, 0x714540, 0x714651,
+}
+
+func newRecognizer_IBM424_he(charset string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  charset,
+		language: "he",
+		charMap:  &charMap_IBM424_he,
+		ngram:    ngram,
+	}
+}
+
+func newRecognizer_IBM424_he_rtl() *recognizerSingleByte {
+	return newRecognizer_IBM424_he("IBM424_rtl", &ngrams_IBM424_he_rtl)
+}
+
+func newRecognizer_IBM424_he_ltr() *recognizerSingleByte {
+	return newRecognizer_IBM424_he("IBM424_ltr", &ngrams_IBM424_he_ltr)
+}
+
+var charMap_IBM420_ar = [256]byte{
+	/*        -0    -1    -2    -3    -4    -5    -6    -7    -8    -9    -A    -B    -C    -D    -E    -F   */
+	/* 0- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 1- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 2- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 3- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 4- */ 0x40, 0x40, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 5- */ 0x40, 0x51, 0x52, 0x40, 0x40, 0x55, 0x56, 0x57, 0x58, 0x59, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 6- */ 0x40, 0x40, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 7- */ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+	/* 8- */ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
+	/* 9- */ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
+	/* A- */ 0xA0, 0x40, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
+	/* B- */ 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0x40, 0x40, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
+	/* C- */ 0x40, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x40, 0xCB, 0x40, 0xCD, 0x40, 0xCF,
+	/* D- */ 0x40, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
+	/* E- */ 0x40, 0x40, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xEA, 0xEB, 0x40, 0xED, 0xEE, 0xEF,
+	/* F- */ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0xFB, 0xFC, 0xFD, 0xFE, 0x40,
+}
+
+var ngrams_IBM420_ar_rtl = [64]uint32{
+	0x4056B1, 0x4056BD, 0x405856, 0x409AB1, 0x40ABDC, 0x40B1B1, 0x40BBBD, 0x40CF56, 0x564056, 0x564640, 0x566340, 0x567540, 0x56B140, 0x56B149, 0x56B156, 0x56B158,
+	0x56B163, 0x56B167, 0x56B169, 0x56B173, 0x56B178, 0x56B19A, 0x56B1AD, 0x56B1BB, 0x56B1CF, 0x56B1DC, 0x56BB40, 0x56BD40, 0x56BD63, 0x584056, 0x624056, 0x6240AB,
+	0x6240B1, 0x6240BB, 0x6240CF, 0x634056, 0x734056, 0x736240, 0x754056, 0x756240, 0x784056, 0x9A4056, 0x9AB1DA, 0xABDC40, 0xB14056, 0xB16240, 0xB1DA40, 0xB1DC40,
+	0xBB4056, 0xBB5640, 0xBB6240, 0xBBBD40, 0xBD4056, 0xBF4056, 0xBF5640, 0xCF56B1, 0xCFBD40, 0xDA4056, 0xDC4056, 0xDC40BB, 0xDC40CF, 0xDC6240, 0xDC7540, 0xDCBD40,
+}
+
+var ngrams_IBM420_ar_ltr = [64]uint32{
+	0x404656, 0x4056BB, 0x4056BF, 0x406273, 0x406275, 0x4062B1, 0x4062BB, 0x4062DC, 0x406356, 0x407556, 0x4075DC, 0x40B156, 0x40BB56, 0x40BD56, 0x40BDBB, 0x40BDCF,
+	0x40BDDC, 0x40DAB1, 0x40DCAB, 0x40DCB1, 0x49B156, 0x564056, 0x564058, 0x564062, 0x564063, 0x564073, 0x564075, 0x564078, 0x56409A, 0x5640B1, 0x5640BB, 0x5640BD,
+	0x5640BF, 0x5640DA, 0x5640DC, 0x565840, 0x56B156, 0x56CF40, 0x58B156, 0x63B156, 0x63BD56, 0x67B156, 0x69B156, 0x73B156, 0x78B156, 0x9AB156, 0xAB4062, 0xADB156,
+	0xB14062, 0xB15640, 0xB156CF, 0xB19A40, 0xB1B140, 0xBB4062, 0xBB40DC, 0xBBB156, 0xBD5640, 0xBDBB40, 0xCF4062, 0xCF40DC, 0xCFB156, 0xDAB19A, 0xDCAB40, 0xDCB156,
+}
+
+func newRecognizer_IBM420_ar(charset string, ngram *[64]uint32) *recognizerSingleByte {
+	return &recognizerSingleByte{
+		charset:  charset,
+		language: "ar",
+		charMap:  &charMap_IBM420_ar,
+		ngram:    ngram,
+	}
+}
+
+func newRecognizer_IBM420_ar_rtl() *recognizerSingleByte {
+	return newRecognizer_IBM420_ar("IBM420_rtl", &ngrams_IBM420_ar_rtl)
+}
+
+func newRecognizer_IBM420_ar_ltr() *recognizerSingleByte {
+	return newRecognizer_IBM420_ar("IBM420_ltr", &ngrams_IBM420_ar_ltr)
+}

vendor/github.com/saintfish/chardet/unicode.go

+package chardet
+
+import (
+	"bytes"
+)
+
+var (
+	utf16beBom = []byte{0xFE, 0xFF}
+	utf16leBom = []byte{0xFF, 0xFE}
+	utf32beBom = []byte{0x00, 0x00, 0xFE, 0xFF}
+	utf32leBom = []byte{0xFF, 0xFE, 0x00, 0x00}
+)
+
+type recognizerUtf16be struct {
+}
+
+func newRecognizer_utf16be() *recognizerUtf16be {
+	return &recognizerUtf16be{}
+}
+
+func (*recognizerUtf16be) Match(input *recognizerInput) (output recognizerOutput) {
+	output = recognizerOutput{
+		Charset: "UTF-16BE",
+	}
+	if bytes.HasPrefix(input.raw, utf16beBom) {
+		output.Confidence = 100
+	}
+	return
+}
+
+type recognizerUtf16le struct {
+}
+
+func newRecognizer_utf16le() *recognizerUtf16le {
+	return &recognizerUtf16le{}
+}
+
+func (*recognizerUtf16le) Match(input *recognizerInput) (output recognizerOutput) {
+	output = recognizerOutput{
+		Charset: "UTF-16LE",
+	}
+	if bytes.HasPrefix(input.raw, utf16leBom) && !bytes.HasPrefix(input.raw, utf32leBom) {
+		output.Confidence = 100
+	}
+	return
+}
+
+type recognizerUtf32 struct {
+	name       string
+	bom        []byte
+	decodeChar func(input []byte) uint32
+}
+
+func decodeUtf32be(input []byte) uint32 {
+	return uint32(input[0])<<24 | uint32(input[1])<<16 | uint32(input[2])<<8 | uint32(input[3])
+}
+
+func decodeUtf32le(input []byte) uint32 {
+	return uint32(input[3])<<24 | uint32(input[2])<<16 | uint32(input[1])<<8 | uint32(input[0])
+}
+
+func newRecognizer_utf32be() *recognizerUtf32 {
+	return &recognizerUtf32{
+		"UTF-32BE",
+		utf32beBom,
+		decodeUtf32be,
+	}
+}
+
+func newRecognizer_utf32le() *recognizerUtf32 {
+	return &recognizerUtf32{
+		"UTF-32LE",
+		utf32leBom,
+		decodeUtf32le,
+	}
+}
+
+func (r *recognizerUtf32) Match(input *recognizerInput) (output recognizerOutput) {
+	output = recognizerOutput{
+		Charset: r.name,
+	}
+	hasBom := bytes.HasPrefix(input.raw, r.bom)
+	var numValid, numInvalid uint32
+	for b := input.raw; len(b) >= 4; b = b[4:] {
+		if c := r.decodeChar(b); c >= 0x10FFFF || (c >= 0xD800 && c <= 0xDFFF) {
+			numInvalid++
+		} else {
+			numValid++
+		}
+	}
+	if hasBom && numInvalid == 0 {
+		output.Confidence = 100
+	} else if hasBom && numValid > numInvalid*10 {
+		output.Confidence = 80
+	} else if numValid > 3 && numInvalid == 0 {
+		output.Confidence = 100
+	} else if numValid > 0 && numInvalid == 0 {
+		output.Confidence = 80
+	} else if numValid > numInvalid*10 {
+		output.Confidence = 25
+	}
+	return
+}

vendor/github.com/saintfish/chardet/utf8.go

+package chardet
+
+import (
+	"bytes"
+)
+
+var utf8Bom = []byte{0xEF, 0xBB, 0xBF}
+
+type recognizerUtf8 struct {
+}
+
+func newRecognizer_utf8() *recognizerUtf8 {
+	return &recognizerUtf8{}
+}
+
+func (*recognizerUtf8) Match(input *recognizerInput) (output recognizerOutput) {
+	output = recognizerOutput{
+		Charset: "UTF-8",
+	}
+	hasBom := bytes.HasPrefix(input.raw, utf8Bom)
+	inputLen := len(input.raw)
+	var numValid, numInvalid uint32
+	var trailBytes uint8
+	for i := 0; i < inputLen; i++ {
+		c := input.raw[i]
+		if c&0x80 == 0 {
+			continue
+		}
+		if c&0xE0 == 0xC0 {
+			trailBytes = 1
+		} else if c&0xF0 == 0xE0 {
+			trailBytes = 2
+		} else if c&0xF8 == 0xF0 {
+			trailBytes = 3
+		} else {
+			numInvalid++
+			if numInvalid > 5 {
+				break
+			}
+			trailBytes = 0
+		}
+
+		for i++; i < inputLen; i++ {
+			c = input.raw[i]
+			if c&0xC0 != 0x80 {
+				numInvalid++
+				break
+			}
+			if trailBytes--; trailBytes == 0 {
+				numValid++
+				break
+			}
+		}
+	}
+
+	if hasBom && numInvalid == 0 {
+		output.Confidence = 100
+	} else if hasBom && numValid > numInvalid*10 {
+		output.Confidence = 80
+	} else if numValid > 3 && numInvalid == 0 {
+		output.Confidence = 100
+	} else if numValid > 0 && numInvalid == 0 {
+		output.Confidence = 80
+	} else if numValid == 0 && numInvalid == 0 {
+		// Plain ASCII
+		output.Confidence = 10
+	} else if numValid > numInvalid*10 {
+		output.Confidence = 25
+	}
+	return
+}

vendor/vendor.json

@@ -417,12 +417,6 @@
 			"revision": "6d0bcf50ac9eb25d2e6f8fbd686d488a701eba55",
 			"revisionTime": "2018-08-20T15:09:00Z"
 		},
-		{
-			"checksumSHA1": "11D2ZLtDH4gRO/S6BhYcDgsTiCs=",
-			"path": "github.com/pingcap/tidb/util/charset",
-			"revision": "6d0bcf50ac9eb25d2e6f8fbd686d488a701eba55",
-			"revisionTime": "2018-08-20T15:09:00Z"
-		},
 		{
 			"checksumSHA1": "5yYzS0BTxlmELR9P/OB4RV/yw0o=",
 			"path": "github.com/pingcap/tidb/util/chunk",
@@ -546,6 +540,12 @@
 			"revision": "11635eb403ff09dbc3a6b5a007ab5ab09151c229",
 			"revisionTime": "2018-04-28T10:25:19Z"
 		},
+		{
+			"checksumSHA1": "EEXppdradk5G/UaQUQ95BQ9n7uw=",
+			"path": "github.com/saintfish/chardet",
+			"revision": "3af4cd4741ca4f3eb0c407c034571a6fb0ea529c",
+			"revisionTime": "2012-08-16T06:12:21Z"
+		},
 		{
 			"checksumSHA1": "p7FQsKPOhh5D4XkBZ7VKDU/rkLI=",
 			"origin": "github.com/pingcap/tidb/vendor/github.com/sirupsen/logrus",