274 lines
11 KiB
Go
274 lines
11 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package charset
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import (
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"strings"
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"testing"
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"code.gitea.io/gitea/modules/setting"
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"github.com/stretchr/testify/assert"
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)
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func resetDefaultCharsetsOrder() {
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defaultDetectedCharsetsOrder := make([]string, 0, len(setting.Repository.DetectedCharsetsOrder))
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for _, charset := range setting.Repository.DetectedCharsetsOrder {
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defaultDetectedCharsetsOrder = append(defaultDetectedCharsetsOrder, strings.ToLower(strings.TrimSpace(charset)))
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}
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setting.Repository.DetectedCharsetScore = map[string]int{}
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i := 0
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for _, charset := range defaultDetectedCharsetsOrder {
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canonicalCharset := strings.ToLower(strings.TrimSpace(charset))
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if _, has := setting.Repository.DetectedCharsetScore[canonicalCharset]; !has {
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setting.Repository.DetectedCharsetScore[canonicalCharset] = i
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i++
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}
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}
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}
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func TestRemoveBOMIfPresent(t *testing.T) {
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res := RemoveBOMIfPresent([]byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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res = RemoveBOMIfPresent([]byte{0xef, 0xbb, 0xbf, 0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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}
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func TestToUTF8WithErr(t *testing.T) {
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resetDefaultCharsetsOrder()
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var res string
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var err error
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// Note: golang compiler seems so behave differently depending on the current
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// locale, so some conversions might behave differently. For that reason, we don't
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// depend on particular conversions but in expected behaviors.
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res, err = ToUTF8WithErr([]byte{0x41, 0x42, 0x43})
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assert.NoError(t, err)
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assert.Equal(t, "ABC", res)
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// "áéíóú"
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res, err = ToUTF8WithErr([]byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.NoError(t, err)
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, []byte(res))
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// "áéíóú"
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res, err = ToUTF8WithErr([]byte{0xef, 0xbb, 0xbf, 0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3,
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0xc3, 0xba})
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assert.NoError(t, err)
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, []byte(res))
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res, err = ToUTF8WithErr([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0xF1, 0x6F, 0x73, 0x41, 0x41, 0x41, 0x2e})
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assert.NoError(t, err)
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stringMustStartWith(t, "Hola,", res)
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stringMustEndWith(t, "AAA.", res)
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res, err = ToUTF8WithErr([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0x07, 0xA4, 0x6F, 0x73, 0x41, 0x41, 0x41, 0x2e})
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assert.NoError(t, err)
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stringMustStartWith(t, "Hola,", res)
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stringMustEndWith(t, "AAA.", res)
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res, err = ToUTF8WithErr([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0x81, 0xA4, 0x6F, 0x73, 0x41, 0x41, 0x41, 0x2e})
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assert.NoError(t, err)
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stringMustStartWith(t, "Hola,", res)
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stringMustEndWith(t, "AAA.", res)
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// Japanese (Shift-JIS)
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// 日属秘ぞしちゅ。
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res, err = ToUTF8WithErr([]byte{0x93, 0xFA, 0x91, 0xAE, 0x94, 0xE9, 0x82, 0xBC, 0x82, 0xB5, 0x82,
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0xBF, 0x82, 0xE3, 0x81, 0x42})
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assert.NoError(t, err)
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assert.Equal(t, []byte{0xE6, 0x97, 0xA5, 0xE5, 0xB1, 0x9E, 0xE7, 0xA7, 0x98, 0xE3,
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0x81, 0x9E, 0xE3, 0x81, 0x97, 0xE3, 0x81, 0xA1, 0xE3, 0x82, 0x85, 0xE3, 0x80, 0x82},
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[]byte(res))
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res, err = ToUTF8WithErr([]byte{0x00, 0x00, 0x00, 0x00})
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assert.NoError(t, err)
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assert.Equal(t, []byte{0x00, 0x00, 0x00, 0x00}, []byte(res))
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}
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func TestToUTF8WithFallback(t *testing.T) {
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resetDefaultCharsetsOrder()
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// "ABC"
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res := ToUTF8WithFallback([]byte{0x41, 0x42, 0x43})
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assert.Equal(t, []byte{0x41, 0x42, 0x43}, res)
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// "áéíóú"
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res = ToUTF8WithFallback([]byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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// UTF8 BOM + "áéíóú"
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res = ToUTF8WithFallback([]byte{0xef, 0xbb, 0xbf, 0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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// "Hola, así cómo ños"
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res = ToUTF8WithFallback([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0xF1, 0x6F, 0x73})
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assert.Equal(t, []byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xC3, 0xAD, 0x20, 0x63,
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0xC3, 0xB3, 0x6D, 0x6F, 0x20, 0xC3, 0xB1, 0x6F, 0x73}, res)
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// "Hola, así cómo "
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minmatch := []byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xC3, 0xAD, 0x20, 0x63, 0xC3, 0xB3, 0x6D, 0x6F, 0x20}
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res = ToUTF8WithFallback([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63, 0xF3, 0x6D, 0x6F, 0x20, 0x07, 0xA4, 0x6F, 0x73})
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// Do not fail for differences in invalid cases, as the library might change the conversion criteria for those
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assert.Equal(t, minmatch, res[0:len(minmatch)])
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res = ToUTF8WithFallback([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63, 0xF3, 0x6D, 0x6F, 0x20, 0x81, 0xA4, 0x6F, 0x73})
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// Do not fail for differences in invalid cases, as the library might change the conversion criteria for those
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assert.Equal(t, minmatch, res[0:len(minmatch)])
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// Japanese (Shift-JIS)
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// "日属秘ぞしちゅ。"
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res = ToUTF8WithFallback([]byte{0x93, 0xFA, 0x91, 0xAE, 0x94, 0xE9, 0x82, 0xBC, 0x82, 0xB5, 0x82, 0xBF, 0x82, 0xE3, 0x81, 0x42})
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assert.Equal(t, []byte{0xE6, 0x97, 0xA5, 0xE5, 0xB1, 0x9E, 0xE7, 0xA7, 0x98, 0xE3,
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0x81, 0x9E, 0xE3, 0x81, 0x97, 0xE3, 0x81, 0xA1, 0xE3, 0x82, 0x85, 0xE3, 0x80, 0x82}, res)
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res = ToUTF8WithFallback([]byte{0x00, 0x00, 0x00, 0x00})
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assert.Equal(t, []byte{0x00, 0x00, 0x00, 0x00}, res)
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}
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func TestToUTF8(t *testing.T) {
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resetDefaultCharsetsOrder()
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// Note: golang compiler seems so behave differently depending on the current
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// locale, so some conversions might behave differently. For that reason, we don't
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// depend on particular conversions but in expected behaviors.
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res := ToUTF8(string([]byte{0x41, 0x42, 0x43}))
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assert.Equal(t, "ABC", res)
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// "áéíóú"
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res = ToUTF8(string([]byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}))
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, []byte(res))
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// BOM + "áéíóú"
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res = ToUTF8(string([]byte{0xef, 0xbb, 0xbf, 0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3,
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0xc3, 0xba}))
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, []byte(res))
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// Latin1
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// Hola, así cómo ños
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res = ToUTF8(string([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0xF1, 0x6F, 0x73}))
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assert.Equal(t, []byte{0x48, 0x6f, 0x6c, 0x61, 0x2c, 0x20, 0x61, 0x73, 0xc3, 0xad, 0x20, 0x63,
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0xc3, 0xb3, 0x6d, 0x6f, 0x20, 0xc3, 0xb1, 0x6f, 0x73}, []byte(res))
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// Latin1
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// Hola, así cómo \x07ños
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res = ToUTF8(string([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63,
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0xF3, 0x6D, 0x6F, 0x20, 0x07, 0xA4, 0x6F, 0x73}))
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// Hola,
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bytesMustStartWith(t, []byte{0x48, 0x6F, 0x6C, 0x61, 0x2C}, []byte(res))
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// This test FAILS
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// res = ToUTF8("Hola, así cómo \x81ños")
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// Do not fail for differences in invalid cases, as the library might change the conversion criteria for those
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// assert.Regexp(t, "^Hola, así cómo", res)
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// Japanese (Shift-JIS)
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// 日属秘ぞしちゅ。
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res = ToUTF8(string([]byte{0x93, 0xFA, 0x91, 0xAE, 0x94, 0xE9, 0x82, 0xBC, 0x82, 0xB5, 0x82,
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0xBF, 0x82, 0xE3, 0x81, 0x42}))
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assert.Equal(t, []byte{0xE6, 0x97, 0xA5, 0xE5, 0xB1, 0x9E, 0xE7, 0xA7, 0x98, 0xE3,
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0x81, 0x9E, 0xE3, 0x81, 0x97, 0xE3, 0x81, 0xA1, 0xE3, 0x82, 0x85, 0xE3, 0x80, 0x82},
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[]byte(res))
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res = ToUTF8("\x00\x00\x00\x00")
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assert.Equal(t, []byte{0x00, 0x00, 0x00, 0x00}, []byte(res))
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}
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func TestToUTF8DropErrors(t *testing.T) {
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resetDefaultCharsetsOrder()
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// "ABC"
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res := ToUTF8DropErrors([]byte{0x41, 0x42, 0x43})
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assert.Equal(t, []byte{0x41, 0x42, 0x43}, res)
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// "áéíóú"
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res = ToUTF8DropErrors([]byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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// UTF8 BOM + "áéíóú"
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res = ToUTF8DropErrors([]byte{0xef, 0xbb, 0xbf, 0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba})
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assert.Equal(t, []byte{0xc3, 0xa1, 0xc3, 0xa9, 0xc3, 0xad, 0xc3, 0xb3, 0xc3, 0xba}, res)
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// "Hola, así cómo ños"
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res = ToUTF8DropErrors([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63, 0xF3, 0x6D, 0x6F, 0x20, 0xF1, 0x6F, 0x73})
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assert.Equal(t, []byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73}, res[:8])
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assert.Equal(t, []byte{0x73}, res[len(res)-1:])
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// "Hola, así cómo "
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minmatch := []byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xC3, 0xAD, 0x20, 0x63, 0xC3, 0xB3, 0x6D, 0x6F, 0x20}
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res = ToUTF8DropErrors([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63, 0xF3, 0x6D, 0x6F, 0x20, 0x07, 0xA4, 0x6F, 0x73})
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// Do not fail for differences in invalid cases, as the library might change the conversion criteria for those
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assert.Equal(t, minmatch, res[0:len(minmatch)])
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res = ToUTF8DropErrors([]byte{0x48, 0x6F, 0x6C, 0x61, 0x2C, 0x20, 0x61, 0x73, 0xED, 0x20, 0x63, 0xF3, 0x6D, 0x6F, 0x20, 0x81, 0xA4, 0x6F, 0x73})
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// Do not fail for differences in invalid cases, as the library might change the conversion criteria for those
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assert.Equal(t, minmatch, res[0:len(minmatch)])
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// Japanese (Shift-JIS)
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// "日属秘ぞしちゅ。"
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res = ToUTF8DropErrors([]byte{0x93, 0xFA, 0x91, 0xAE, 0x94, 0xE9, 0x82, 0xBC, 0x82, 0xB5, 0x82, 0xBF, 0x82, 0xE3, 0x81, 0x42})
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assert.Equal(t, []byte{0xE6, 0x97, 0xA5, 0xE5, 0xB1, 0x9E, 0xE7, 0xA7, 0x98, 0xE3,
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0x81, 0x9E, 0xE3, 0x81, 0x97, 0xE3, 0x81, 0xA1, 0xE3, 0x82, 0x85, 0xE3, 0x80, 0x82}, res)
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res = ToUTF8DropErrors([]byte{0x00, 0x00, 0x00, 0x00})
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assert.Equal(t, []byte{0x00, 0x00, 0x00, 0x00}, res)
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}
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func TestDetectEncoding(t *testing.T) {
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resetDefaultCharsetsOrder()
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testSuccess := func(b []byte, expected string) {
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encoding, err := DetectEncoding(b)
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assert.NoError(t, err)
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assert.Equal(t, expected, encoding)
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}
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// utf-8
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b := []byte("just some ascii")
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testSuccess(b, "UTF-8")
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// utf-8-sig: "hey" (with BOM)
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b = []byte{0xef, 0xbb, 0xbf, 0x68, 0x65, 0x79}
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testSuccess(b, "UTF-8")
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// utf-16: "hey<accented G>"
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b = []byte{0xff, 0xfe, 0x68, 0x00, 0x65, 0x00, 0x79, 0x00, 0xf4, 0x01}
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testSuccess(b, "UTF-16LE")
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// iso-8859-1: d<accented e>cor<newline>
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b = []byte{0x44, 0xe9, 0x63, 0x6f, 0x72, 0x0a}
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encoding, err := DetectEncoding(b)
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assert.NoError(t, err)
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assert.Contains(t, encoding, "ISO-8859-1")
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old := setting.Repository.AnsiCharset
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setting.Repository.AnsiCharset = "placeholder"
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defer func() {
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setting.Repository.AnsiCharset = old
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}()
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testSuccess(b, "placeholder")
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// invalid bytes
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b = []byte{0xfa}
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_, err = DetectEncoding(b)
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assert.Error(t, err)
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}
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func stringMustStartWith(t *testing.T, expected, value string) {
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assert.Equal(t, expected, string(value[:len(expected)]))
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}
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func stringMustEndWith(t *testing.T, expected, value string) {
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assert.Equal(t, expected, string(value[len(value)-len(expected):]))
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}
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func bytesMustStartWith(t *testing.T, expected, value []byte) {
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assert.Equal(t, expected, value[:len(expected)])
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}
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