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Fix chardet test and add ordering option (#11621)

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* Fix chardet test and add ordering option

Signed-off-by: Andrew Thornton <art27@cantab.net>

* minor fixes

Signed-off-by: Andrew Thornton <art27@cantab.net>

* remove log

Signed-off-by: Andrew Thornton <art27@cantab.net>

* remove log2

Signed-off-by: Andrew Thornton <art27@cantab.net>

* only iterate through top results

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update docs/content/doc/advanced/config-cheat-sheet.en-us.md

* slight restructure of for loop

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
zeripath 2020-06-02 23:20:19 +01:00 committed by GitHub
parent fe2cacf5ea
commit a1ad188326
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 117 additions and 6 deletions
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7
custom/conf/app.ini.sample
View file

@ -14,7 +14,12 @@ RUN_MODE = dev
[repository]
ROOT =
SCRIPT_TYPE = bash
; Default ANSI charset
; DETECTED_CHARSETS_ORDER tie-break order for detected charsets.
; If the charsets have equal confidence, tie-breaking will be done by order in this list
; with charsets earlier in the list chosen in preference to those later.
; Adding "defaults" will place the unused charsets at that position.
DETECTED_CHARSETS_ORDER=UTF-8, UTF-16BE, UTF-16LE, UTF-32BE, UTF-32LE, ISO-8859, windows-1252, ISO-8859, windows-1250, ISO-8859, ISO-8859, ISO-8859, windows-1253, ISO-8859, windows-1255, ISO-8859, windows-1251, windows-1256, KOI8-R, ISO-8859, windows-1254, Shift_JIS, GB18030, EUC-JP, EUC-KR, Big5, ISO-2022, ISO-2022, ISO-2022, IBM424_rtl, IBM424_ltr, IBM420_rtl, IBM420_ltr
; Default ANSI charset to override non-UTF-8 charsets to
ANSI_CHARSET =
; Force every new repository to be private
FORCE_PRIVATE = false

3
docs/content/doc/advanced/config-cheat-sheet.en-us.md
View file

@ -46,7 +46,8 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
an absolute path.
- `SCRIPT_TYPE`: **bash**: The script type this server supports. Usually this is `bash`,
but some users report that only `sh` is available.
- `ANSI_CHARSET`: **\<empty\>**: The default charset for an unrecognized charset.
- `DETECTED_CHARSETS_ORDER`: **UTF-8, UTF-16BE, UTF-16LE, UTF-32BE, UTF-32LE, ISO-8859, windows-1252, ISO-8859, windows-1250, ISO-8859, ISO-8859, ISO-8859, windows-1253, ISO-8859, windows-1255, ISO-8859, windows-1251, windows-1256, KOI8-R, ISO-8859, windows-1254, Shift_JIS, GB18030, EUC-JP, EUC-KR, Big5, ISO-2022, ISO-2022, ISO-2022, IBM424_rtl, IBM424_ltr, IBM420_rtl, IBM420_ltr**: Tie-break order of detected charsets - if the detected charsets have equal confidence, charsets earlier in the list will be chosen in preference to those later. Adding `defaults` will place the unnamed charsets at that point.
- `ANSI_CHARSET`: **\<empty\>**: Default ANSI charset to override non-UTF-8 charsets to.
- `FORCE_PRIVATE`: **false**: Force every new repository to be private.
- `DEFAULT_PRIVATE`: **last**: Default private when creating a new repository.
\[last, private, public\]

35
modules/charset/charset.go
View file

@ -7,6 +7,7 @@ package charset
import (
"bytes"
"fmt"
"strings"
"unicode/utf8"
"code.gitea.io/gitea/modules/log"
@ -137,16 +138,42 @@ func DetectEncoding(content []byte) (string, error) {
} else {
detectContent = content
}
result, err := textDetector.DetectBest(detectContent)
// Now we can't use DetectBest or just results[0] because the result isn't stable - so we need a tie break
results, err := textDetector.DetectAll(detectContent)
if err != nil {
if err == chardet.NotDetectedError && len(setting.Repository.AnsiCharset) > 0 {
log.Debug("Using default AnsiCharset: %s", setting.Repository.AnsiCharset)
return setting.Repository.AnsiCharset, nil
}
return "", err
}
topConfidence := results[0].Confidence
topResult := results[0]
priority, has := setting.Repository.DetectedCharsetScore[strings.ToLower(strings.TrimSpace(topResult.Charset))]
for _, result := range results {
// As results are sorted in confidence order - if we have a different confidence
// we know it's less than the current confidence and can break out of the loop early
if result.Confidence != topConfidence {
break
}
// Otherwise check if this results is earlier in the DetectedCharsetOrder than our current top guesss
resultPriority, resultHas := setting.Repository.DetectedCharsetScore[strings.ToLower(strings.TrimSpace(result.Charset))]
if resultHas && (!has || resultPriority < priority) {
topResult = result
priority = resultPriority
has = true
}
}
// FIXME: to properly decouple this function the fallback ANSI charset should be passed as an argument
if result.Charset != "UTF-8" && len(setting.Repository.AnsiCharset) > 0 {
if topResult.Charset != "UTF-8" && len(setting.Repository.AnsiCharset) > 0 {
log.Debug("Using default AnsiCharset: %s", setting.Repository.AnsiCharset)
return setting.Repository.AnsiCharset, err
}
log.Debug("Detected encoding: %s", result.Charset)
return result.Charset, err
log.Debug("Detected encoding: %s", topResult.Charset)
return topResult.Charset, err
}

4
modules/charset/charset_test.go
View file

@ -230,7 +230,11 @@ func TestDetectEncoding(t *testing.T) {
// we accept either.
assert.Contains(t, encoding, "ISO-8859")
old := setting.Repository.AnsiCharset
setting.Repository.AnsiCharset = "placeholder"
defer func() {
setting.Repository.AnsiCharset = old
}()
testSuccess(b, "placeholder")
// invalid bytes

74
modules/setting/repository.go
View file

@ -24,6 +24,8 @@ const (
// Repository settings
var (
Repository = struct {
DetectedCharsetsOrder []string
DetectedCharsetScore map[string]int `ini:"-"`
AnsiCharset string
ForcePrivate bool
DefaultPrivate string
@ -88,6 +90,42 @@ var (
Wiki []string
} `ini:"repository.signing"`
}{
DetectedCharsetsOrder: []string{
"UTF-8",
"UTF-16BE",
"UTF-16LE",
"UTF-32BE",
"UTF-32LE",
"ISO-8859-1",
"windows-1252",
"ISO-8859-2",
"windows-1250",
"ISO-8859-5",
"ISO-8859-6",
"ISO-8859-7",
"windows-1253",
"ISO-8859-8-I",
"windows-1255",
"ISO-8859-8",
"windows-1251",
"windows-1256",
"KOI8-R",
"ISO-8859-9",
"windows-1254",
"Shift_JIS",
"GB18030",
"EUC-JP",
"EUC-KR",
"Big5",
"ISO-2022-JP",
"ISO-2022-KR",
"ISO-2022-CN",
"IBM424_rtl",
"IBM424_ltr",
"IBM420_rtl",
"IBM420_ltr",
},
DetectedCharsetScore: map[string]int{},
AnsiCharset: "",
ForcePrivate: false,
DefaultPrivate: RepoCreatingLastUserVisibility,
@ -208,6 +246,10 @@ func newRepository() {
} else {
RepoRootPath = filepath.Clean(RepoRootPath)
}
defaultDetectedCharsetsOrder := make([]string, 0, len(Repository.DetectedCharsetsOrder))
for _, charset := range Repository.DetectedCharsetsOrder {
defaultDetectedCharsetsOrder = append(defaultDetectedCharsetsOrder, strings.ToLower(strings.TrimSpace(charset)))
}
ScriptType = sec.Key("SCRIPT_TYPE").MustString("bash")
if err = Cfg.Section("repository").MapTo(&Repository); err != nil {
@ -222,6 +264,38 @@ func newRepository() {
log.Fatal("Failed to map Repository.PullRequest settings: %v", err)
}
preferred := make([]string, 0, len(Repository.DetectedCharsetsOrder))
for _, charset := range Repository.DetectedCharsetsOrder {
canonicalCharset := strings.ToLower(strings.TrimSpace(charset))
preferred = append(preferred, canonicalCharset)
// remove it from the defaults
for i, charset := range defaultDetectedCharsetsOrder {
if charset == canonicalCharset {
defaultDetectedCharsetsOrder = append(defaultDetectedCharsetsOrder[:i], defaultDetectedCharsetsOrder[i+1:]...)
break
}
}
}
i := 0
for _, charset := range preferred {
// Add the defaults
if charset == "defaults" {
for _, charset := range defaultDetectedCharsetsOrder {
canonicalCharset := strings.ToLower(strings.TrimSpace(charset))
if _, has := Repository.DetectedCharsetScore[canonicalCharset]; !has {
Repository.DetectedCharsetScore[canonicalCharset] = i
i++
}
}
continue
}
if _, has := Repository.DetectedCharsetScore[charset]; !has {
Repository.DetectedCharsetScore[charset] = i
i++
}
}
if !filepath.IsAbs(Repository.Upload.TempPath) {
Repository.Upload.TempPath = path.Join(AppWorkPath, Repository.Upload.TempPath)
}