1149 lines
32 KiB
Go
1149 lines
32 KiB
Go
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// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package encoding_test
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"strings"
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"testing"
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"golang.org/x/text/encoding"
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"golang.org/x/text/encoding/charmap"
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"golang.org/x/text/encoding/japanese"
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"golang.org/x/text/encoding/korean"
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"golang.org/x/text/encoding/simplifiedchinese"
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"golang.org/x/text/encoding/traditionalchinese"
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"golang.org/x/text/encoding/unicode"
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"golang.org/x/text/encoding/unicode/utf32"
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"golang.org/x/text/transform"
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)
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func trim(s string) string {
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if len(s) < 120 {
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return s
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}
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return s[:50] + "..." + s[len(s)-50:]
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}
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var basicTestCases = []struct {
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e encoding.Encoding
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encPrefix string
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encSuffix string
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encoded string
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utf8 string
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}{
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// The encoded forms can be verified by the iconv program:
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// $ echo 月日は百代 | iconv -f UTF-8 -t SHIFT-JIS | xxd
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// Charmap tests.
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{
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e: charmap.CodePage037,
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encoded: "\xc8\x51\xba\x93\xcf",
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utf8: "Hé[lõ",
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},
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{
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e: charmap.CodePage437,
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encoded: "H\x82ll\x93 \x9d\xa7\xf4\x9c\xbe",
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utf8: "Héllô ¥º⌠£╛",
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},
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{
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e: charmap.CodePage866,
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encoded: "H\xf3\xd3o \x98\xfd\x9f\xdd\xa1",
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utf8: "Hє╙o Ш¤Я▌б",
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},
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{
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e: charmap.CodePage1047,
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encoded: "\xc8\x54\x93\x93\x9f",
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utf8: "Hèll¤",
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},
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{
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e: charmap.CodePage1140,
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encoded: "\xc8\x9f\x93\x93\xcf",
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utf8: "H€llõ",
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},
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{
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e: charmap.ISO8859_2,
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encoded: "Hel\xe5\xf5",
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utf8: "Helĺő",
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},
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{
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e: charmap.ISO8859_3,
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encoded: "He\xbd\xd4",
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utf8: "He½Ô",
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},
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{
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e: charmap.ISO8859_4,
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encoded: "Hel\xb6\xf8",
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utf8: "Helļø",
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},
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{
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e: charmap.ISO8859_5,
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encoded: "H\xd7\xc6o",
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utf8: "HзЦo",
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},
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{
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e: charmap.ISO8859_6,
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encoded: "Hel\xc2\xc9",
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utf8: "Helآة",
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},
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{
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e: charmap.ISO8859_7,
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encoded: "H\xeel\xebo",
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utf8: "Hξlλo",
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},
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{
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e: charmap.ISO8859_8,
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encoded: "Hel\xf5\xed",
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utf8: "Helץם",
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},
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{
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e: charmap.ISO8859_9,
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encoded: "\xdeayet",
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utf8: "Şayet",
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},
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{
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e: charmap.ISO8859_10,
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encoded: "H\xea\xbfo",
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utf8: "Hęŋo",
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},
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{
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e: charmap.ISO8859_13,
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encoded: "H\xe6l\xf9o",
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utf8: "Hęlło",
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},
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{
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e: charmap.ISO8859_14,
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encoded: "He\xfe\xd0o",
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utf8: "HeŷŴo",
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},
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{
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e: charmap.ISO8859_15,
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encoded: "H\xa4ll\xd8",
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utf8: "H€llØ",
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},
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{
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e: charmap.ISO8859_16,
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encoded: "H\xe6ll\xbd",
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utf8: "Hællœ",
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},
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{
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e: charmap.KOI8R,
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encoded: "He\x93\xad\x9c",
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utf8: "He⌠╜°",
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},
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{
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e: charmap.KOI8U,
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encoded: "He\x93\xad\x9c",
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utf8: "He⌠ґ°",
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},
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{
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e: charmap.Macintosh,
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encoded: "He\xdf\xd7",
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utf8: "Hefl◊",
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},
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{
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e: charmap.MacintoshCyrillic,
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encoded: "He\xbe\x94",
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utf8: "HeЊФ",
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},
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{
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e: charmap.Windows874,
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encoded: "He\xb7\xf0",
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utf8: "Heท๐",
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},
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{
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e: charmap.Windows1250,
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encoded: "He\xe5\xe5o",
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utf8: "Heĺĺo",
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},
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{
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e: charmap.Windows1251,
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encoded: "H\xball\xfe",
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utf8: "Hєllю",
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},
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{
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e: charmap.Windows1252,
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encoded: "H\xe9ll\xf4 \xa5\xbA\xae\xa3\xd0",
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utf8: "Héllô ¥º®£Ð",
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},
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{
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e: charmap.Windows1253,
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encoded: "H\xe5ll\xd6",
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utf8: "HεllΦ",
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},
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{
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e: charmap.Windows1254,
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encoded: "\xd0ello",
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utf8: "Ğello",
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},
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{
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e: charmap.Windows1255,
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encoded: "He\xd4o",
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utf8: "Heװo",
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},
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{
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e: charmap.Windows1256,
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encoded: "H\xdbllo",
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utf8: "Hغllo",
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},
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{
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e: charmap.Windows1257,
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encoded: "He\xeflo",
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utf8: "Heļlo",
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},
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{
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e: charmap.Windows1258,
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encoded: "Hell\xf5",
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utf8: "Hellơ",
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},
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{
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e: charmap.XUserDefined,
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encoded: "\x00\x40\x7f\x80\xab\xff",
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utf8: "\u0000\u0040\u007f\uf780\uf7ab\uf7ff",
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},
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// UTF-16 tests.
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{
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e: utf16BEIB,
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encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf16BEEB,
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encPrefix: "\xfe\xff",
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encoded: "\x00\x57\x00\xe4\xd8\x35\xdd\x65",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf16LEIB,
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encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf16LEEB,
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encPrefix: "\xff\xfe",
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encoded: "\x57\x00\xe4\x00\x35\xd8\x65\xdd",
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utf8: "\x57\u00e4\U0001d565",
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},
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// UTF-32 tests.
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{
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e: utf32BEIB,
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encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf32.UTF32(utf32.BigEndian, utf32.ExpectBOM),
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encPrefix: "\x00\x00\xfe\xff",
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encoded: "\x00\x00\x00\x57\x00\x00\x00\xe4\x00\x01\xd5\x65",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf32.UTF32(utf32.LittleEndian, utf32.IgnoreBOM),
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encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00",
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utf8: "\x57\u00e4\U0001d565",
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},
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{
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e: utf32.UTF32(utf32.LittleEndian, utf32.ExpectBOM),
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encPrefix: "\xff\xfe\x00\x00",
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encoded: "\x57\x00\x00\x00\xe4\x00\x00\x00\x65\xd5\x01\x00",
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utf8: "\x57\u00e4\U0001d565",
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},
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// Chinese tests.
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//
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// "\u0081\u00de\u00df\u00e0\u00e1\u00e2\u00e3\uffff\U00010000" is a
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// nonsense string that contains GB18030 encodable codepoints of which
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// only U+00E0 and U+00E1 are GBK encodable.
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//
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// "A\u3000\u554a\u4e02\u4e90\u72dc\u7349\u02ca\u2588Z€" is a nonsense
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// string that contains ASCII and GBK encodable codepoints from Levels
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// 1-5 as well as the Euro sign.
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//
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// "A\u43f0\u4c32\U00027267\u3000\U0002910d\u79d4Z€" is a nonsense string
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// that contains ASCII and Big5 encodable codepoints from the Basic
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// Multilingual Plane and the Supplementary Ideographic Plane as well as
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// the Euro sign.
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//
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// "花间一壶酒，独酌无相亲。" (simplified) and
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// "花間一壺酒，獨酌無相親。" (traditional)
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// are from the 8th century poem "Yuè Xià Dú Zhuó".
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{
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e: simplifiedchinese.GB18030,
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encoded: "\x81\x30\x81\x31\x81\x30\x89\x37\x81\x30\x89\x38\xa8\xa4\xa8\xa2" +
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"\x81\x30\x89\x39\x81\x30\x8a\x30\x84\x31\xa4\x39\x90\x30\x81\x30",
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utf8: "\u0081\u00de\u00df\u00e0\u00e1\u00e2\u00e3\uffff\U00010000",
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},
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{
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e: simplifiedchinese.GB18030,
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encoded: "\xbb\xa8\xbc\xe4\xd2\xbb\xba\xf8\xbe\xc6\xa3\xac\xb6\xc0\xd7\xc3" +
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"\xce\xde\xcf\xe0\xc7\xd7\xa1\xa3",
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utf8: "花间一壶酒，独酌无相亲。",
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},
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{
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e: simplifiedchinese.GBK,
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encoded: "A\xa1\xa1\xb0\xa1\x81\x40\x81\x80\xaa\x40\xaa\x80\xa8\x40\xa8\x80Z\x80",
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utf8: "A\u3000\u554a\u4e02\u4e90\u72dc\u7349\u02ca\u2588Z€",
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},
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|||
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{
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|||
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e: simplifiedchinese.GBK,
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encoded: "\xbb\xa8\xbc\xe4\xd2\xbb\xba\xf8\xbe\xc6\xa3\xac\xb6\xc0\xd7\xc3" +
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"\xce\xde\xcf\xe0\xc7\xd7\xa1\xa3",
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utf8: "花间一壶酒，独酌无相亲。",
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|||
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},
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|||
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{
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|||
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e: simplifiedchinese.HZGB2312,
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|||
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encoded: "A~{\x21\x21~~\x30\x21~}Z~~",
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|||
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utf8: "A\u3000~\u554aZ~",
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|||
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},
|
|||
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{
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|||
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e: simplifiedchinese.HZGB2312,
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|||
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encPrefix: "~{",
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|||
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encoded: ";(<dR;:x>F#,6@WCN^O`GW!#",
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|||
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utf8: "花间一壶酒，独酌无相亲。",
|
|||
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},
|
|||
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{
|
|||
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e: traditionalchinese.Big5,
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|||
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encoded: "A\x87\x40\x87\x41\x87\x45\xa1\x40\xfe\xfd\xfe\xfeZ\xa3\xe1",
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utf8: "A\u43f0\u4c32\U00027267\u3000\U0002910d\u79d4Z€",
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|||
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},
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|||
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{
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|||
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e: traditionalchinese.Big5,
|
|||
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encoded: "\xaa\xe1\xb6\xa1\xa4\x40\xb3\xfd\xb0\x73\xa1\x41\xbf\x57\xb0\x75" +
|
|||
|
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"\xb5\x4c\xac\xdb\xbf\xcb\xa1\x43",
|
|||
|
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utf8: "花間一壺酒，獨酌無相親。",
|
|||
|
|
},
|
|||
|
|
|
|||
|
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// Japanese tests.
|
|||
|
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//
|
|||
|
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// "A｡ｶﾟ 0208: etc 0212: etc" is a nonsense string that contains ASCII, half-width
|
|||
|
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// kana, JIS X 0208 (including two near the kink in the Shift JIS second byte
|
|||
|
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// encoding) and JIS X 0212 encodable codepoints.
|
|||
|
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//
|
|||
|
|
// "月日は百代の過客にして、行かふ年も又旅人也。" is from the 17th century poem
|
|||
|
|
// "Oku no Hosomichi" and contains both hiragana and kanji.
|
|||
|
|
{
|
|||
|
|
e: japanese.EUCJP,
|
|||
|
|
encoded: "A\x8e\xa1\x8e\xb6\x8e\xdf " +
|
|||
|
|
"0208: \xa1\xa1\xa1\xa2\xa1\xdf\xa1\xe0\xa1\xfd\xa1\xfe\xa2\xa1\xa2\xa2\xf4\xa6 " +
|
|||
|
|
"0212: \x8f\xa2\xaf\x8f\xed\xe3",
|
|||
|
|
utf8: "A｡ｶﾟ " +
|
|||
|
|
"0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199 " +
|
|||
|
|
"0212: \u02d8\u9fa5",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: japanese.EUCJP,
|
|||
|
|
encoded: "\xb7\xee\xc6\xfc\xa4\xcf\xc9\xb4\xc2\xe5\xa4\xce\xb2\xe1\xb5\xd2" +
|
|||
|
|
"\xa4\xcb\xa4\xb7\xa4\xc6\xa1\xa2\xb9\xd4\xa4\xab\xa4\xd5\xc7\xaf" +
|
|||
|
|
"\xa4\xe2\xcb\xf4\xce\xb9\xbf\xcd\xcc\xe9\xa1\xa3",
|
|||
|
|
utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: japanese.ISO2022JP,
|
|||
|
|
encSuffix: "\x1b\x28\x42",
|
|||
|
|
encoded: "\x1b\x28\x49\x21\x36\x5f\x1b\x28\x42 " +
|
|||
|
|
"0208: \x1b\x24\x42\x21\x21\x21\x22\x21\x5f\x21\x60\x21\x7d\x21\x7e\x22\x21\x22\x22\x74\x26",
|
|||
|
|
utf8: "｡ｶﾟ " +
|
|||
|
|
"0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: japanese.ISO2022JP,
|
|||
|
|
encPrefix: "\x1b\x24\x42",
|
|||
|
|
encSuffix: "\x1b\x28\x42",
|
|||
|
|
encoded: "\x37\x6e\x46\x7c\x24\x4f\x49\x34\x42\x65\x24\x4e\x32\x61\x35\x52" +
|
|||
|
|
"\x24\x4b\x24\x37\x24\x46\x21\x22\x39\x54\x24\x2b\x24\x55\x47\x2f" +
|
|||
|
|
"\x24\x62\x4b\x74\x4e\x39\x3f\x4d\x4c\x69\x21\x23",
|
|||
|
|
utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: japanese.ShiftJIS,
|
|||
|
|
encoded: "A\xa1\xb6\xdf " +
|
|||
|
|
"0208: \x81\x40\x81\x41\x81\x7e\x81\x80\x81\x9d\x81\x9e\x81\x9f\x81\xa0\xea\xa4",
|
|||
|
|
utf8: "A｡ｶﾟ " +
|
|||
|
|
"0208: \u3000\u3001\u00d7\u00f7\u25ce\u25c7\u25c6\u25a1\u7199",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: japanese.ShiftJIS,
|
|||
|
|
encoded: "\x8c\x8e\x93\xfa\x82\xcd\x95\x53\x91\xe3\x82\xcc\x89\xdf\x8b\x71" +
|
|||
|
|
"\x82\xc9\x82\xb5\x82\xc4\x81\x41\x8d\x73\x82\xa9\x82\xd3\x94\x4e" +
|
|||
|
|
"\x82\xe0\x96\x94\x97\xb7\x90\x6c\x96\xe7\x81\x42",
|
|||
|
|
utf8: "月日は百代の過客にして、行かふ年も又旅人也。",
|
|||
|
|
},
|
|||
|
|
|
|||
|
|
// Korean tests.
|
|||
|
|
//
|
|||
|
|
// "A\uac02\uac35\uac56\ud401B\ud408\ud620\ud624C\u4f3d\u8a70D" is a
|
|||
|
|
// nonsense string that contains ASCII, Hangul and CJK ideographs.
|
|||
|
|
//
|
|||
|
|
// "세계야, 안녕" translates as "Hello, world".
|
|||
|
|
{
|
|||
|
|
e: korean.EUCKR,
|
|||
|
|
encoded: "A\x81\x41\x81\x61\x81\x81\xc6\xfeB\xc7\xa1\xc7\xfe\xc8\xa1C\xca\xa1\xfd\xfeD",
|
|||
|
|
utf8: "A\uac02\uac35\uac56\ud401B\ud408\ud620\ud624C\u4f3d\u8a70D",
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
e: korean.EUCKR,
|
|||
|
|
encoded: "\xbc\xbc\xb0\xe8\xbe\xdf\x2c\x20\xbe\xc8\xb3\xe7",
|
|||
|
|
utf8: "세계야, 안녕",
|
|||
|
|
},
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestBasics(t *testing.T) {
|
|||
|
|
for _, tc := range basicTestCases {
|
|||
|
|
for _, direction := range []string{"Decode", "Encode"} {
|
|||
|
|
var coder Transcoder
|
|||
|
|
var want, src, wPrefix, sPrefix, wSuffix, sSuffix string
|
|||
|
|
if direction == "Decode" {
|
|||
|
|
coder, want, src = tc.e.NewDecoder(), tc.utf8, tc.encoded
|
|||
|
|
wPrefix, sPrefix, wSuffix, sSuffix = "", tc.encPrefix, "", tc.encSuffix
|
|||
|
|
} else {
|
|||
|
|
coder, want, src = tc.e.NewEncoder(), tc.encoded, tc.utf8
|
|||
|
|
wPrefix, sPrefix, wSuffix, sSuffix = tc.encPrefix, "", tc.encSuffix, ""
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
dst := make([]byte, len(wPrefix)+len(want)+len(wSuffix))
|
|||
|
|
nDst, nSrc, err := coder.Transform(dst, []byte(sPrefix+src+sSuffix), true)
|
|||
|
|
if err != nil {
|
|||
|
|
t.Errorf("%v: %s: %v", tc.e, direction, err)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if nDst != len(wPrefix)+len(want)+len(wSuffix) {
|
|||
|
|
t.Errorf("%v: %s: nDst got %d, want %d",
|
|||
|
|
tc.e, direction, nDst, len(wPrefix)+len(want)+len(wSuffix))
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if nSrc != len(sPrefix)+len(src)+len(sSuffix) {
|
|||
|
|
t.Errorf("%v: %s: nSrc got %d, want %d",
|
|||
|
|
tc.e, direction, nSrc, len(sPrefix)+len(src)+len(sSuffix))
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if got := string(dst); got != wPrefix+want+wSuffix {
|
|||
|
|
t.Errorf("%v: %s:\ngot %q\nwant %q",
|
|||
|
|
tc.e, direction, got, wPrefix+want+wSuffix)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for _, n := range []int{0, 1, 2, 10, 123, 4567} {
|
|||
|
|
input := sPrefix + strings.Repeat(src, n) + sSuffix
|
|||
|
|
g, err := coder.String(input)
|
|||
|
|
if err != nil {
|
|||
|
|
t.Errorf("%v: %s: Bytes: n=%d: %v", tc.e, direction, n, err)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if len(g) == 0 && len(input) == 0 {
|
|||
|
|
// If the input is empty then the output can be empty,
|
|||
|
|
// regardless of whatever wPrefix is.
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
got1, want1 := string(g), wPrefix+strings.Repeat(want, n)+wSuffix
|
|||
|
|
if got1 != want1 {
|
|||
|
|
t.Errorf("%v: %s: ReadAll: n=%d\ngot %q\nwant %q",
|
|||
|
|
tc.e, direction, n, trim(got1), trim(want1))
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// TestBig5CircumflexAndMacron tests the special cases listed in
|
|||
|
|
// http://encoding.spec.whatwg.org/#big5
|
|||
|
|
// Note that these special cases aren't preserved by round-tripping through
|
|||
|
|
// decoding and encoding (since
|
|||
|
|
// http://encoding.spec.whatwg.org/index-big5.txt does not have an entry for
|
|||
|
|
// U+0304 or U+030C), so we can't test this in TestBasics.
|
|||
|
|
func TestBig5CircumflexAndMacron(t *testing.T) {
|
|||
|
|
src := "\x88\x5f\x88\x60\x88\x61\x88\x62\x88\x63\x88\x64\x88\x65\x88\x66 " +
|
|||
|
|
"\x88\xa2\x88\xa3\x88\xa4\x88\xa5\x88\xa6"
|
|||
|
|
want := "ÓǑÒ\u00ca\u0304Ế\u00ca\u030cỀÊ " +
|
|||
|
|
"ü\u00ea\u0304ế\u00ea\u030cề"
|
|||
|
|
dst, err := ioutil.ReadAll(transform.NewReader(
|
|||
|
|
strings.NewReader(src), traditionalchinese.Big5.NewDecoder()))
|
|||
|
|
if err != nil {
|
|||
|
|
t.Fatal(err)
|
|||
|
|
}
|
|||
|
|
if got := string(dst); got != want {
|
|||
|
|
t.Fatalf("\ngot %q\nwant %q", got, want)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestEncodeInvalidUTF8(t *testing.T) {
|
|||
|
|
inputs := []string{
|
|||
|
|
"hello.",
|
|||
|
|
"wo\ufffdld.",
|
|||
|
|
"ABC\xff\x80\x80", // Invalid UTF-8.
|
|||
|
|
"\x80\x80\x80\x80\x80",
|
|||
|
|
"\x80\x80D\x80\x80", // Valid rune at "D".
|
|||
|
|
"E\xed\xa0\x80\xed\xbf\xbfF", // Two invalid UTF-8 runes (surrogates).
|
|||
|
|
"G",
|
|||
|
|
"H\xe2\x82", // U+20AC in UTF-8 is "\xe2\x82\xac", which we split over two
|
|||
|
|
"\xacI\xe2\x82", // input lines. It maps to 0x80 in the Windows-1252 encoding.
|
|||
|
|
}
|
|||
|
|
// Each invalid source byte becomes '\x1a'.
|
|||
|
|
want := strings.Replace("hello.wo?ld.ABC??????????D??E??????FGH\x80I??", "?", "\x1a", -1)
|
|||
|
|
|
|||
|
|
transformer := encoding.ReplaceUnsupported(charmap.Windows1252.NewEncoder())
|
|||
|
|
gotBuf := make([]byte, 0, 1024)
|
|||
|
|
src := make([]byte, 0, 1024)
|
|||
|
|
for i, input := range inputs {
|
|||
|
|
dst := make([]byte, 1024)
|
|||
|
|
src = append(src, input...)
|
|||
|
|
atEOF := i == len(inputs)-1
|
|||
|
|
nDst, nSrc, err := transformer.Transform(dst, src, atEOF)
|
|||
|
|
gotBuf = append(gotBuf, dst[:nDst]...)
|
|||
|
|
src = src[nSrc:]
|
|||
|
|
if err != nil && err != transform.ErrShortSrc {
|
|||
|
|
t.Fatalf("i=%d: %v", i, err)
|
|||
|
|
}
|
|||
|
|
if atEOF && err != nil {
|
|||
|
|
t.Fatalf("i=%d: atEOF: %v", i, err)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if got := string(gotBuf); got != want {
|
|||
|
|
t.Fatalf("\ngot %+q\nwant %+q", got, want)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestReplacement(t *testing.T) {
|
|||
|
|
for _, direction := range []string{"Decode", "Encode"} {
|
|||
|
|
enc, want := (transform.Transformer)(nil), ""
|
|||
|
|
if direction == "Decode" {
|
|||
|
|
enc = encoding.Replacement.NewDecoder()
|
|||
|
|
want = "\ufffd"
|
|||
|
|
} else {
|
|||
|
|
enc = encoding.Replacement.NewEncoder()
|
|||
|
|
want = "AB\x00CD\ufffdYZ"
|
|||
|
|
}
|
|||
|
|
sr := strings.NewReader("AB\x00CD\x80YZ")
|
|||
|
|
g, err := ioutil.ReadAll(transform.NewReader(sr, enc))
|
|||
|
|
if err != nil {
|
|||
|
|
t.Errorf("%s: ReadAll: %v", direction, err)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if got := string(g); got != want {
|
|||
|
|
t.Errorf("%s:\ngot %q\nwant %q", direction, got, want)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestUTF8Validator(t *testing.T) {
|
|||
|
|
testCases := []struct {
|
|||
|
|
desc string
|
|||
|
|
dstSize int
|
|||
|
|
src string
|
|||
|
|
atEOF bool
|
|||
|
|
want string
|
|||
|
|
wantErr error
|
|||
|
|
}{
|
|||
|
|
{
|
|||
|
|
"empty input",
|
|||
|
|
100,
|
|||
|
|
"",
|
|||
|
|
false,
|
|||
|
|
"",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"valid 1-byte 1-rune input",
|
|||
|
|
100,
|
|||
|
|
"a",
|
|||
|
|
false,
|
|||
|
|
"a",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"valid 3-byte 1-rune input",
|
|||
|
|
100,
|
|||
|
|
"\u1234",
|
|||
|
|
false,
|
|||
|
|
"\u1234",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"valid 5-byte 3-rune input",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\u0101",
|
|||
|
|
false,
|
|||
|
|
"a\u0100\u0101",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"perfectly sized dst (non-ASCII)",
|
|||
|
|
5,
|
|||
|
|
"a\u0100\u0101",
|
|||
|
|
false,
|
|||
|
|
"a\u0100\u0101",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"short dst (non-ASCII)",
|
|||
|
|
4,
|
|||
|
|
"a\u0100\u0101",
|
|||
|
|
false,
|
|||
|
|
"a\u0100",
|
|||
|
|
transform.ErrShortDst,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"perfectly sized dst (ASCII)",
|
|||
|
|
5,
|
|||
|
|
"abcde",
|
|||
|
|
false,
|
|||
|
|
"abcde",
|
|||
|
|
nil,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"short dst (ASCII)",
|
|||
|
|
4,
|
|||
|
|
"abcde",
|
|||
|
|
false,
|
|||
|
|
"abcd",
|
|||
|
|
transform.ErrShortDst,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"partial input (!EOF)",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\xf1",
|
|||
|
|
false,
|
|||
|
|
"a\u0100",
|
|||
|
|
transform.ErrShortSrc,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"invalid input (EOF)",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\xf1",
|
|||
|
|
true,
|
|||
|
|
"a\u0100",
|
|||
|
|
encoding.ErrInvalidUTF8,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"invalid input (!EOF)",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\x80",
|
|||
|
|
false,
|
|||
|
|
"a\u0100",
|
|||
|
|
encoding.ErrInvalidUTF8,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"invalid input (above U+10FFFF)",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\xf7\xbf\xbf\xbf",
|
|||
|
|
false,
|
|||
|
|
"a\u0100",
|
|||
|
|
encoding.ErrInvalidUTF8,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
"invalid input (surrogate half)",
|
|||
|
|
100,
|
|||
|
|
"a\u0100\xed\xa0\x80",
|
|||
|
|
false,
|
|||
|
|
"a\u0100",
|
|||
|
|
encoding.ErrInvalidUTF8,
|
|||
|
|
},
|
|||
|
|
}
|
|||
|
|
for _, tc := range testCases {
|
|||
|
|
dst := make([]byte, tc.dstSize)
|
|||
|
|
nDst, nSrc, err := encoding.UTF8Validator.Transform(dst, []byte(tc.src), tc.atEOF)
|
|||
|
|
if nDst < 0 || len(dst) < nDst {
|
|||
|
|
t.Errorf("%s: nDst=%d out of range", tc.desc, nDst)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
got := string(dst[:nDst])
|
|||
|
|
if got != tc.want || nSrc != len(tc.want) || err != tc.wantErr {
|
|||
|
|
t.Errorf("%s:\ngot %+q, %d, %v\nwant %+q, %d, %v",
|
|||
|
|
tc.desc, got, nSrc, err, tc.want, len(tc.want), tc.wantErr)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
var (
|
|||
|
|
utf16LEIB = unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM) // UTF-16LE (atypical interpretation)
|
|||
|
|
utf16LEUB = unicode.UTF16(unicode.LittleEndian, unicode.UseBOM) // UTF-16, LE
|
|||
|
|
utf16LEEB = unicode.UTF16(unicode.LittleEndian, unicode.ExpectBOM) // UTF-16, LE, Expect
|
|||
|
|
utf16BEIB = unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM) // UTF-16BE (atypical interpretation)
|
|||
|
|
utf16BEUB = unicode.UTF16(unicode.BigEndian, unicode.UseBOM) // UTF-16 default
|
|||
|
|
utf16BEEB = unicode.UTF16(unicode.BigEndian, unicode.ExpectBOM) // UTF-16 Expect
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
func TestUTF16(t *testing.T) {
|
|||
|
|
testCases := []struct {
|
|||
|
|
desc string
|
|||
|
|
src string
|
|||
|
|
notEOF bool // the inverse of atEOF
|
|||
|
|
sizeDst int
|
|||
|
|
want string
|
|||
|
|
nSrc int
|
|||
|
|
err error
|
|||
|
|
t transform.Transformer
|
|||
|
|
}{{
|
|||
|
|
desc: "utf-16 IgnoreBOM dec: empty string",
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 UseBOM dec: empty string",
|
|||
|
|
t: utf16BEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 ExpectBOM dec: empty string",
|
|||
|
|
err: unicode.ErrMissingBOM,
|
|||
|
|
t: utf16BEEB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 dec: BOM determines encoding BE (RFC 2781:3.3)",
|
|||
|
|
src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=Ra",
|
|||
|
|
nSrc: 12,
|
|||
|
|
t: utf16BEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 dec: BOM determines encoding LE (RFC 2781:3.3)",
|
|||
|
|
src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=Ra",
|
|||
|
|
nSrc: 12,
|
|||
|
|
t: utf16LEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 dec: BOM determines encoding LE, change default (RFC 2781:3.3)",
|
|||
|
|
src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=Ra",
|
|||
|
|
nSrc: 12,
|
|||
|
|
t: utf16BEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 dec: Fail on missing BOM when required",
|
|||
|
|
src: "\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x00\x52\x00\x61",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
err: unicode.ErrMissingBOM,
|
|||
|
|
t: utf16BEEB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 dec: SHOULD interpret text as big-endian when BOM not present (RFC 2781:4.3)",
|
|||
|
|
src: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=Ra",
|
|||
|
|
nSrc: 10,
|
|||
|
|
t: utf16BEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
// This is an error according to RFC 2781. But errors in RFC 2781 are
|
|||
|
|
// open to interpretations, so I guess this is fine.
|
|||
|
|
desc: "utf-16le dec: incorrect BOM is an error (RFC 2781:4.1)",
|
|||
|
|
src: "\xFE\xFF\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFE\U00012345=Ra",
|
|||
|
|
nSrc: 12,
|
|||
|
|
t: utf16LEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
|
|||
|
|
nSrc: 7,
|
|||
|
|
t: utf16LEUB.NewEncoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc: SHOULD write BOM (RFC 2781:3.3)",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
|
|||
|
|
nSrc: 7,
|
|||
|
|
t: utf16BEUB.NewEncoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16le enc: MUST NOT write BOM (RFC 2781:3.3)",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\x08\xD8\x45\xDF\x3D\x00\x52\x00\x61\x00",
|
|||
|
|
nSrc: 7,
|
|||
|
|
t: utf16LEIB.NewEncoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: incorrect UTF-16: odd bytes",
|
|||
|
|
src: "\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFD",
|
|||
|
|
nSrc: 1,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: unpaired surrogate, odd bytes",
|
|||
|
|
src: "\xD8\x45\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFD\uFFFD",
|
|||
|
|
nSrc: 3,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: unpaired low surrogate + valid text",
|
|||
|
|
src: "\xD8\x45\x00a",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFDa",
|
|||
|
|
nSrc: 4,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: unpaired low surrogate + valid text + single byte",
|
|||
|
|
src: "\xD8\x45\x00ab",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFDa\uFFFD",
|
|||
|
|
nSrc: 5,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16le dec: unpaired high surrogate",
|
|||
|
|
src: "\x00\x00\x00\xDC\x12\xD8",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\x00\uFFFD\uFFFD",
|
|||
|
|
nSrc: 6,
|
|||
|
|
t: utf16LEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: two unpaired low surrogates",
|
|||
|
|
src: "\xD8\x45\xD8\x12",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\uFFFD\uFFFD",
|
|||
|
|
nSrc: 4,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: short dst",
|
|||
|
|
src: "\x00a",
|
|||
|
|
sizeDst: 0,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: short dst surrogate",
|
|||
|
|
src: "\xD8\xF5\xDC\x12",
|
|||
|
|
sizeDst: 3,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: short dst trailing byte",
|
|||
|
|
src: "\x00",
|
|||
|
|
sizeDst: 2,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: short src",
|
|||
|
|
src: "\x00",
|
|||
|
|
notEOF: true,
|
|||
|
|
sizeDst: 3,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
t: utf16BEIB.NewDecoder(),
|
|||
|
|
err: transform.ErrShortSrc,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
|
|||
|
|
nSrc: 7,
|
|||
|
|
t: utf16BEUB.NewEncoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc: short dst normal",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 9,
|
|||
|
|
want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52",
|
|||
|
|
nSrc: 6,
|
|||
|
|
t: utf16BEIB.NewEncoder(),
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc: short dst surrogate",
|
|||
|
|
src: "\U00012345=Ra",
|
|||
|
|
sizeDst: 3,
|
|||
|
|
want: "",
|
|||
|
|
nSrc: 0,
|
|||
|
|
t: utf16BEIB.NewEncoder(),
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16 enc: short src",
|
|||
|
|
src: "\U00012345=Ra\xC2",
|
|||
|
|
notEOF: true,
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\xD8\x08\xDF\x45\x00\x3D\x00\x52\x00\x61",
|
|||
|
|
nSrc: 7,
|
|||
|
|
t: utf16BEIB.NewEncoder(),
|
|||
|
|
err: transform.ErrShortSrc,
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16be dec: don't change byte order mid-stream",
|
|||
|
|
src: "\xFE\xFF\xD8\x08\xDF\x45\x00\x3D\xFF\xFE\x00\x52\x00\x61",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=\ufffeRa",
|
|||
|
|
nSrc: 14,
|
|||
|
|
t: utf16BEUB.NewDecoder(),
|
|||
|
|
}, {
|
|||
|
|
desc: "utf-16le dec: don't change byte order mid-stream",
|
|||
|
|
src: "\xFF\xFE\x08\xD8\x45\xDF\x3D\x00\xFF\xFE\xFE\xFF\x52\x00\x61\x00",
|
|||
|
|
sizeDst: 100,
|
|||
|
|
want: "\U00012345=\ufeff\ufffeRa",
|
|||
|
|
nSrc: 16,
|
|||
|
|
t: utf16LEUB.NewDecoder(),
|
|||
|
|
}}
|
|||
|
|
for i, tc := range testCases {
|
|||
|
|
b := make([]byte, tc.sizeDst)
|
|||
|
|
nDst, nSrc, err := tc.t.Transform(b, []byte(tc.src), !tc.notEOF)
|
|||
|
|
if err != tc.err {
|
|||
|
|
t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err)
|
|||
|
|
}
|
|||
|
|
if got := string(b[:nDst]); got != tc.want {
|
|||
|
|
t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want)
|
|||
|
|
}
|
|||
|
|
if nSrc != tc.nSrc {
|
|||
|
|
t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestErrorHandler(t *testing.T) {
|
|||
|
|
testCases := []struct {
|
|||
|
|
desc string
|
|||
|
|
handler func(*encoding.Encoder) *encoding.Encoder
|
|||
|
|
sizeDst int
|
|||
|
|
src, want string
|
|||
|
|
nSrc int
|
|||
|
|
err error
|
|||
|
|
}{
|
|||
|
|
{
|
|||
|
|
desc: "one rune replacement",
|
|||
|
|
handler: encoding.ReplaceUnsupported,
|
|||
|
|
sizeDst: 100,
|
|||
|
|
src: "\uAC00",
|
|||
|
|
want: "\x1a",
|
|||
|
|
nSrc: 3,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "mid-stream rune replacement",
|
|||
|
|
handler: encoding.ReplaceUnsupported,
|
|||
|
|
sizeDst: 100,
|
|||
|
|
src: "a\uAC00bcd\u00e9",
|
|||
|
|
want: "a\x1abcd\xe9",
|
|||
|
|
nSrc: 9,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "at end rune replacement",
|
|||
|
|
handler: encoding.ReplaceUnsupported,
|
|||
|
|
sizeDst: 10,
|
|||
|
|
src: "\u00e9\uAC00",
|
|||
|
|
want: "\xe9\x1a",
|
|||
|
|
nSrc: 5,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "short buffer replacement",
|
|||
|
|
handler: encoding.ReplaceUnsupported,
|
|||
|
|
sizeDst: 1,
|
|||
|
|
src: "\u00e9\uAC00",
|
|||
|
|
want: "\xe9",
|
|||
|
|
nSrc: 2,
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "one rune html escape",
|
|||
|
|
handler: encoding.HTMLEscapeUnsupported,
|
|||
|
|
sizeDst: 100,
|
|||
|
|
src: "\uAC00",
|
|||
|
|
want: "가",
|
|||
|
|
nSrc: 3,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "mid-stream html escape",
|
|||
|
|
handler: encoding.HTMLEscapeUnsupported,
|
|||
|
|
sizeDst: 100,
|
|||
|
|
src: "\u00e9\uAC00dcba",
|
|||
|
|
want: "\xe9가dcba",
|
|||
|
|
nSrc: 9,
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
desc: "short buffer html escape",
|
|||
|
|
handler: encoding.HTMLEscapeUnsupported,
|
|||
|
|
sizeDst: 9,
|
|||
|
|
src: "ab\uAC01",
|
|||
|
|
want: "ab",
|
|||
|
|
nSrc: 2,
|
|||
|
|
err: transform.ErrShortDst,
|
|||
|
|
},
|
|||
|
|
}
|
|||
|
|
for i, tc := range testCases {
|
|||
|
|
tr := tc.handler(charmap.Windows1250.NewEncoder())
|
|||
|
|
b := make([]byte, tc.sizeDst)
|
|||
|
|
nDst, nSrc, err := tr.Transform(b, []byte(tc.src), true)
|
|||
|
|
if err != tc.err {
|
|||
|
|
t.Errorf("%d:%s: error was %v; want %v", i, tc.desc, err, tc.err)
|
|||
|
|
}
|
|||
|
|
if got := string(b[:nDst]); got != tc.want {
|
|||
|
|
t.Errorf("%d:%s: result was %q: want %q", i, tc.desc, got, tc.want)
|
|||
|
|
}
|
|||
|
|
if nSrc != tc.nSrc {
|
|||
|
|
t.Errorf("%d:%s: nSrc was %d; want %d", i, tc.desc, nSrc, tc.nSrc)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
func TestBOMOverride(t *testing.T) {
|
|||
|
|
dec := unicode.BOMOverride(charmap.CodePage437.NewDecoder())
|
|||
|
|
dst := make([]byte, 100)
|
|||
|
|
for i, tc := range []struct {
|
|||
|
|
src string
|
|||
|
|
atEOF bool
|
|||
|
|
dst string
|
|||
|
|
nSrc int
|
|||
|
|
err error
|
|||
|
|
}{
|
|||
|
|
0: {"H\x82ll\x93", true, "Héllô", 5, nil},
|
|||
|
|
1: {"\uFEFFHéllö", true, "Héllö", 10, nil},
|
|||
|
|
2: {"\xFE\xFF\x00H\x00e\x00l\x00l\x00o", true, "Hello", 12, nil},
|
|||
|
|
3: {"\xFF\xFEH\x00e\x00l\x00l\x00o\x00", true, "Hello", 12, nil},
|
|||
|
|
4: {"\uFEFF", true, "", 3, nil},
|
|||
|
|
5: {"\xFE\xFF", true, "", 2, nil},
|
|||
|
|
6: {"\xFF\xFE", true, "", 2, nil},
|
|||
|
|
7: {"\xEF\xBB", true, "\u2229\u2557", 2, nil},
|
|||
|
|
8: {"\xEF", true, "\u2229", 1, nil},
|
|||
|
|
9: {"", true, "", 0, nil},
|
|||
|
|
10: {"\xFE", true, "\u25a0", 1, nil},
|
|||
|
|
11: {"\xFF", true, "\u00a0", 1, nil},
|
|||
|
|
12: {"\xEF\xBB", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
13: {"\xEF", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
14: {"", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
15: {"\xFE", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
16: {"\xFF", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
17: {"\xFF\xFE", false, "", 0, transform.ErrShortSrc},
|
|||
|
|
} {
|
|||
|
|
dec.Reset()
|
|||
|
|
nDst, nSrc, err := dec.Transform(dst, []byte(tc.src), tc.atEOF)
|
|||
|
|
got := string(dst[:nDst])
|
|||
|
|
if nSrc != tc.nSrc {
|
|||
|
|
t.Errorf("%d: nSrc: got %d; want %d", i, nSrc, tc.nSrc)
|
|||
|
|
}
|
|||
|
|
if got != tc.dst {
|
|||
|
|
t.Errorf("%d: got %+q; want %+q", i, got, tc.dst)
|
|||
|
|
}
|
|||
|
|
if err != tc.err {
|
|||
|
|
t.Errorf("%d: error: got %v; want %v", i, err, tc.err)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// testdataFiles are files in testdata/*.txt.
|
|||
|
|
var testdataFiles = []struct {
|
|||
|
|
enc encoding.Encoding
|
|||
|
|
basename, ext string
|
|||
|
|
}{
|
|||
|
|
{charmap.Windows1252, "candide", "windows-1252"},
|
|||
|
|
{japanese.EUCJP, "rashomon", "euc-jp"},
|
|||
|
|
{japanese.ISO2022JP, "rashomon", "iso-2022-jp"},
|
|||
|
|
{japanese.ShiftJIS, "rashomon", "shift-jis"},
|
|||
|
|
{korean.EUCKR, "unsu-joh-eun-nal", "euc-kr"},
|
|||
|
|
{simplifiedchinese.GBK, "sunzi-bingfa-simplified", "gbk"},
|
|||
|
|
{simplifiedchinese.HZGB2312, "sunzi-bingfa-gb-levels-1-and-2", "hz-gb2312"},
|
|||
|
|
{traditionalchinese.Big5, "sunzi-bingfa-traditional", "big5"},
|
|||
|
|
{utf16LEIB, "candide", "utf-16le"},
|
|||
|
|
{unicode.UTF8, "candide", "utf-8"},
|
|||
|
|
{utf32BEIB, "candide", "utf-32be"},
|
|||
|
|
|
|||
|
|
// GB18030 is a superset of GBK and is nominally a Simplified Chinese
|
|||
|
|
// encoding, but it can also represent the entire Basic Multilingual
|
|||
|
|
// Plane, including codepoints like 'â' that aren't encodable by GBK.
|
|||
|
|
// GB18030 on Simplified Chinese should perform similarly to GBK on
|
|||
|
|
// Simplified Chinese. GB18030 on "candide" is more interesting.
|
|||
|
|
{simplifiedchinese.GB18030, "candide", "gb18030"},
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Encoder or Decoder
|
|||
|
|
type Transcoder interface {
|
|||
|
|
transform.Transformer
|
|||
|
|
Bytes([]byte) ([]byte, error)
|
|||
|
|
String(string) (string, error)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func load(direction string, enc encoding.Encoding) ([]byte, []byte, Transcoder, error) {
|
|||
|
|
basename, ext, count := "", "", 0
|
|||
|
|
for _, tf := range testdataFiles {
|
|||
|
|
if tf.enc == enc {
|
|||
|
|
basename, ext = tf.basename, tf.ext
|
|||
|
|
count++
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if count != 1 {
|
|||
|
|
if count == 0 {
|
|||
|
|
return nil, nil, nil, fmt.Errorf("no testdataFiles for %s", enc)
|
|||
|
|
}
|
|||
|
|
return nil, nil, nil, fmt.Errorf("too many testdataFiles for %s", enc)
|
|||
|
|
}
|
|||
|
|
dstFile := fmt.Sprintf("testdata/%s-%s.txt", basename, ext)
|
|||
|
|
srcFile := fmt.Sprintf("testdata/%s-utf-8.txt", basename)
|
|||
|
|
var coder Transcoder = encoding.ReplaceUnsupported(enc.NewEncoder())
|
|||
|
|
if direction == "Decode" {
|
|||
|
|
dstFile, srcFile = srcFile, dstFile
|
|||
|
|
coder = enc.NewDecoder()
|
|||
|
|
}
|
|||
|
|
dst, err := ioutil.ReadFile(dstFile)
|
|||
|
|
if err != nil {
|
|||
|
|
return nil, nil, nil, err
|
|||
|
|
}
|
|||
|
|
src, err := ioutil.ReadFile(srcFile)
|
|||
|
|
if err != nil {
|
|||
|
|
return nil, nil, nil, err
|
|||
|
|
}
|
|||
|
|
return dst, src, coder, nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func TestFiles(t *testing.T) {
|
|||
|
|
for _, dir := range []string{"Decode", "Encode"} {
|
|||
|
|
for _, tf := range testdataFiles {
|
|||
|
|
dst, src, transformer, err := load(dir, tf.enc)
|
|||
|
|
if err != nil {
|
|||
|
|
t.Errorf("%s, %s: load: %v", dir, tf.enc, err)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
buf, err := transformer.Bytes(src)
|
|||
|
|
if err != nil {
|
|||
|
|
t.Errorf("%s, %s: transform: %v", dir, tf.enc, err)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if !bytes.Equal(buf, dst) {
|
|||
|
|
t.Errorf("%s, %s: transformed bytes did not match golden file", dir, tf.enc)
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func benchmark(b *testing.B, direction string, enc encoding.Encoding) {
|
|||
|
|
_, src, transformer, err := load(direction, enc)
|
|||
|
|
if err != nil {
|
|||
|
|
b.Fatal(err)
|
|||
|
|
}
|
|||
|
|
b.SetBytes(int64(len(src)))
|
|||
|
|
b.ResetTimer()
|
|||
|
|
for i := 0; i < b.N; i++ {
|
|||
|
|
r := transform.NewReader(bytes.NewReader(src), transformer)
|
|||
|
|
io.Copy(ioutil.Discard, r)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func BenchmarkBig5Decoder(b *testing.B) { benchmark(b, "Decode", traditionalchinese.Big5) }
|
|||
|
|
func BenchmarkBig5Encoder(b *testing.B) { benchmark(b, "Encode", traditionalchinese.Big5) }
|
|||
|
|
func BenchmarkCharmapDecoder(b *testing.B) { benchmark(b, "Decode", charmap.Windows1252) }
|
|||
|
|
func BenchmarkCharmapEncoder(b *testing.B) { benchmark(b, "Encode", charmap.Windows1252) }
|
|||
|
|
func BenchmarkEUCJPDecoder(b *testing.B) { benchmark(b, "Decode", japanese.EUCJP) }
|
|||
|
|
func BenchmarkEUCJPEncoder(b *testing.B) { benchmark(b, "Encode", japanese.EUCJP) }
|
|||
|
|
func BenchmarkEUCKRDecoder(b *testing.B) { benchmark(b, "Decode", korean.EUCKR) }
|
|||
|
|
func BenchmarkEUCKREncoder(b *testing.B) { benchmark(b, "Encode", korean.EUCKR) }
|
|||
|
|
func BenchmarkGB18030Decoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.GB18030) }
|
|||
|
|
func BenchmarkGB18030Encoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.GB18030) }
|
|||
|
|
func BenchmarkGBKDecoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.GBK) }
|
|||
|
|
func BenchmarkGBKEncoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.GBK) }
|
|||
|
|
func BenchmarkHZGB2312Decoder(b *testing.B) { benchmark(b, "Decode", simplifiedchinese.HZGB2312) }
|
|||
|
|
func BenchmarkHZGB2312Encoder(b *testing.B) { benchmark(b, "Encode", simplifiedchinese.HZGB2312) }
|
|||
|
|
func BenchmarkISO2022JPDecoder(b *testing.B) { benchmark(b, "Decode", japanese.ISO2022JP) }
|
|||
|
|
func BenchmarkISO2022JPEncoder(b *testing.B) { benchmark(b, "Encode", japanese.ISO2022JP) }
|
|||
|
|
func BenchmarkShiftJISDecoder(b *testing.B) { benchmark(b, "Decode", japanese.ShiftJIS) }
|
|||
|
|
func BenchmarkShiftJISEncoder(b *testing.B) { benchmark(b, "Encode", japanese.ShiftJIS) }
|
|||
|
|
func BenchmarkUTF8Decoder(b *testing.B) { benchmark(b, "Decode", unicode.UTF8) }
|
|||
|
|
func BenchmarkUTF8Encoder(b *testing.B) { benchmark(b, "Encode", unicode.UTF8) }
|
|||
|
|
func BenchmarkUTF16Decoder(b *testing.B) { benchmark(b, "Decode", utf16LEIB) }
|
|||
|
|
func BenchmarkUTF16Encoder(b *testing.B) { benchmark(b, "Encode", utf16LEIB) }
|
|||
|
|
func BenchmarkUTF32Decoder(b *testing.B) { benchmark(b, "Decode", utf32BEIB) }
|
|||
|
|
func BenchmarkUTF32Encoder(b *testing.B) { benchmark(b, "Encode", utf32BEIB) }
|
|||
|
|
|
|||
|
|
var utf32BEIB = utf32.UTF32(utf32.BigEndian, utf32.IgnoreBOM)
|