package unicode · Go 标准库中文参考

# package unicode `import "unicode"` Package unicode provides data and functions to test some properties of Unicode code points. ## Index * [Constants](#pkg-constants) * [Variables](#pkg-variables) * [type CaseRange](#CaseRange) * [type Range16](#Range16) * [type Range32](#Range32) * [type RangeTable](#RangeTable) * [type SpecialCase](#SpecialCase) * [func (special SpecialCase) ToLower(r rune) rune](#SpecialCase.ToLower) * [func (special SpecialCase) ToUpper(r rune) rune](#SpecialCase.ToUpper) * [func (special SpecialCase) ToTitle(r rune) rune](#SpecialCase.ToTitle) * [func Is(rangeTab \*RangeTable, r rune) bool](#Is) * [func In(r rune, ranges ...\*RangeTable) bool](#In) * [func IsOneOf(ranges []\*RangeTable, r rune) bool](#IsOneOf) * [func IsSpace(r rune) bool](#IsSpace) * [func IsDigit(r rune) bool](#IsDigit) * [func IsNumber(r rune) bool](#IsNumber) * [func IsLetter(r rune) bool](#IsLetter) * [func IsGraphic(r rune) bool](#IsGraphic) * [func IsControl(r rune) bool](#IsControl) * [func IsMark(r rune) bool](#IsMark) * [func IsPrint(r rune) bool](#IsPrint) * [func IsPunct(r rune) bool](#IsPunct) * [func IsSymbol(r rune) bool](#IsSymbol) * [func IsLower(r rune) bool](#IsLower) * [func IsUpper(r rune) bool](#IsUpper) * [func IsTitle(r rune) bool](#IsTitle) * [func To(_case int, r rune) rune](#To) * [func ToLower(r rune) rune](#ToLower) * [func ToUpper(r rune) rune](#ToUpper) * [func ToTitle(r rune) rune](#ToTitle) * [func SimpleFold(r rune) rune](#SimpleFold) ## Constants ``` const ( MaxRune = '\U0010FFFF' // 最大的合法unicode码值 ReplacementChar = '\uFFFD' // 表示不合法的unicode码值 MaxASCII = '\u007F' // 最大的ASCII值 MaxLatin1 = '\u00FF' // 最大的Latin-1值 ) ``` ``` const ( UpperCase = iota LowerCase TitleCase MaxCase ) ``` 下值可用于CaseRange类型里的数组类型Delta字段，用于码值映射。 ``` const ( UpperLower = MaxRune + 1 // 不能是合法的delta值 ) ``` 如果一个CaseRange类型的的Delta字段使用了UpperLower，就表示该CaseRange表示的序列格式为：Upper Lower Upper Lower ``` const Version = "6.3.0" ``` Version是本包采用的unicode版本（以及Variables栏里那些乱七八糟的字符集的来源）。 ## Variables ``` var ( Cc = _Cc // Cc is the set of Unicode characters in category Cc. Cf = _Cf // Cf is the set of Unicode characters in category Cf. Co = _Co // Co is the set of Unicode characters in category Co. Cs = _Cs // Cs is the set of Unicode characters in category Cs. Digit = _Nd // Digit is the set of Unicode characters with the "decimal digit" property. Nd = _Nd // Nd is the set of Unicode characters in category Nd. Letter = _L // Letter/L is the set of Unicode letters, category L. L = _L Lm = _Lm // Lm is the set of Unicode characters in category Lm. Lo = _Lo // Lo is the set of Unicode characters in category Lo. Lower = _Ll // Lower is the set of Unicode lower case letters. Ll = _Ll // Ll is the set of Unicode characters in category Ll. Mark = _M // Mark/M is the set of Unicode mark characters, category M. M = _M Mc = _Mc // Mc is the set of Unicode characters in category Mc. Me = _Me // Me is the set of Unicode characters in category Me. Mn = _Mn // Mn is the set of Unicode characters in category Mn. Nl = _Nl // Nl is the set of Unicode characters in category Nl. No = _No // No is the set of Unicode characters in category No. Number = _N // Number/N is the set of Unicode number characters, category N. N = _N Other = _C // Other/C is the set of Unicode control and special characters, category C. C = _C Pc = _Pc // Pc is the set of Unicode characters in category Pc. Pd = _Pd // Pd is the set of Unicode characters in category Pd. Pe = _Pe // Pe is the set of Unicode characters in category Pe. Pf = _Pf // Pf is the set of Unicode characters in category Pf. Pi = _Pi // Pi is the set of Unicode characters in category Pi. Po = _Po // Po is the set of Unicode characters in category Po. Ps = _Ps // Ps is the set of Unicode characters in category Ps. Punct = _P // Punct/P is the set of Unicode punctuation characters, category P. P = _P Sc = _Sc // Sc is the set of Unicode characters in category Sc. Sk = _Sk // Sk is the set of Unicode characters in category Sk. Sm = _Sm // Sm is the set of Unicode characters in category Sm. So = _So // So is the set of Unicode characters in category So. Space = _Z // Space/Z is the set of Unicode space characters, category Z. Z = _Z Symbol = _S // Symbol/S is the set of Unicode symbol characters, category S. S = _S Title = _Lt // Title is the set of Unicode title case letters. Lt = _Lt // Lt is the set of Unicode characters in category Lt. Upper = _Lu // Upper is the set of Unicode upper case letters. Lu = _Lu // Lu is the set of Unicode characters in category Lu. Zl = _Zl // Zl is the set of Unicode characters in category Zl. Zp = _Zp // Zp is the set of Unicode characters in category Zp. Zs = _Zs // Zs is the set of Unicode characters in category Zs. ) ``` 这些变量的类型是\*RangeTable。 ``` var ( Arabic = _Arabic // Arabic is the set of Unicode characters in script Arabic. Armenian = _Armenian // Armenian is the set of Unicode characters in script Armenian. Avestan = _Avestan // Avestan is the set of Unicode characters in script Avestan. Balinese = _Balinese // Balinese is the set of Unicode characters in script Balinese. Bamum = _Bamum // Bamum is the set of Unicode characters in script Bamum. Batak = _Batak // Batak is the set of Unicode characters in script Batak. Bengali = _Bengali // Bengali is the set of Unicode characters in script Bengali. Bopomofo = _Bopomofo // Bopomofo is the set of Unicode characters in script Bopomofo. Brahmi = _Brahmi // Brahmi is the set of Unicode characters in script Brahmi. Braille = _Braille // Braille is the set of Unicode characters in script Braille. Buginese = _Buginese // Buginese is the set of Unicode characters in script Buginese. Buhid = _Buhid // Buhid is the set of Unicode characters in script Buhid. Canadian_Aboriginal = _Canadian_Aboriginal // Canadian_Aboriginal is the set of Unicode characters in script Canadian_Aboriginal. Carian = _Carian // Carian is the set of Unicode characters in script Carian. Chakma = _Chakma // Chakma is the set of Unicode characters in script Chakma. Cham = _Cham // Cham is the set of Unicode characters in script Cham. Cherokee = _Cherokee // Cherokee is the set of Unicode characters in script Cherokee. Common = _Common // Common is the set of Unicode characters in script Common. Coptic = _Coptic // Coptic is the set of Unicode characters in script Coptic. Cuneiform = _Cuneiform // Cuneiform is the set of Unicode characters in script Cuneiform. Cypriot = _Cypriot // Cypriot is the set of Unicode characters in script Cypriot. Cyrillic = _Cyrillic // Cyrillic is the set of Unicode characters in script Cyrillic. Deseret = _Deseret // Deseret is the set of Unicode characters in script Deseret. Devanagari = _Devanagari // Devanagari is the set of Unicode characters in script Devanagari. Egyptian_Hieroglyphs = _Egyptian_Hieroglyphs // Egyptian_Hieroglyphs is the set of Unicode characters in script Egyptian_Hieroglyphs. Ethiopic = _Ethiopic // Ethiopic is the set of Unicode characters in script Ethiopic. Georgian = _Georgian // Georgian is the set of Unicode characters in script Georgian. Glagolitic = _Glagolitic // Glagolitic is the set of Unicode characters in script Glagolitic. Gothic = _Gothic // Gothic is the set of Unicode characters in script Gothic. Greek = _Greek // Greek is the set of Unicode characters in script Greek. Gujarati = _Gujarati // Gujarati is the set of Unicode characters in script Gujarati. Gurmukhi = _Gurmukhi // Gurmukhi is the set of Unicode characters in script Gurmukhi. Han = _Han // Han is the set of Unicode characters in script Han. Hangul = _Hangul // Hangul is the set of Unicode characters in script Hangul. Hanunoo = _Hanunoo // Hanunoo is the set of Unicode characters in script Hanunoo. Hebrew = _Hebrew // Hebrew is the set of Unicode characters in script Hebrew. Hiragana = _Hiragana // Hiragana is the set of Unicode characters in script Hiragana. Imperial_Aramaic = _Imperial_Aramaic // Imperial_Aramaic is the set of Unicode characters in script Imperial_Aramaic. Inherited = _Inherited // Inherited is the set of Unicode characters in script Inherited. Inscriptional_Pahlavi = _Inscriptional_Pahlavi // Inscriptional_Pahlavi is the set of Unicode characters in script Inscriptional_Pahlavi. Inscriptional_Parthian = _Inscriptional_Parthian // Inscriptional_Parthian is the set of Unicode characters in script Inscriptional_Parthian. Javanese = _Javanese // Javanese is the set of Unicode characters in script Javanese. Kaithi = _Kaithi // Kaithi is the set of Unicode characters in script Kaithi. Kannada = _Kannada // Kannada is the set of Unicode characters in script Kannada. Katakana = _Katakana // Katakana is the set of Unicode characters in script Katakana. Kayah_Li = _Kayah_Li // Kayah_Li is the set of Unicode characters in script Kayah_Li. Kharoshthi = _Kharoshthi // Kharoshthi is the set of Unicode characters in script Kharoshthi. Khmer = _Khmer // Khmer is the set of Unicode characters in script Khmer. Lao = _Lao // Lao is the set of Unicode characters in script Lao. Latin = _Latin // Latin is the set of Unicode characters in script Latin. Lepcha = _Lepcha // Lepcha is the set of Unicode characters in script Lepcha. Limbu = _Limbu // Limbu is the set of Unicode characters in script Limbu. Linear_B = _Linear_B // Linear_B is the set of Unicode characters in script Linear_B. Lisu = _Lisu // Lisu is the set of Unicode characters in script Lisu. Lycian = _Lycian // Lycian is the set of Unicode characters in script Lycian. Lydian = _Lydian // Lydian is the set of Unicode characters in script Lydian. Malayalam = _Malayalam // Malayalam is the set of Unicode characters in script Malayalam. Mandaic = _Mandaic // Mandaic is the set of Unicode characters in script Mandaic. Meetei_Mayek = _Meetei_Mayek // Meetei_Mayek is the set of Unicode characters in script Meetei_Mayek. Meroitic_Cursive = _Meroitic_Cursive // Meroitic_Cursive is the set of Unicode characters in script Meroitic_Cursive. Meroitic_Hieroglyphs = _Meroitic_Hieroglyphs // Meroitic_Hieroglyphs is the set of Unicode characters in script Meroitic_Hieroglyphs. Miao = _Miao // Miao is the set of Unicode characters in script Miao. Mongolian = _Mongolian // Mongolian is the set of Unicode characters in script Mongolian. Myanmar = _Myanmar // Myanmar is the set of Unicode characters in script Myanmar. New_Tai_Lue = _New_Tai_Lue // New_Tai_Lue is the set of Unicode characters in script New_Tai_Lue. Nko = _Nko // Nko is the set of Unicode characters in script Nko. Ogham = _Ogham // Ogham is the set of Unicode characters in script Ogham. Ol_Chiki = _Ol_Chiki // Ol_Chiki is the set of Unicode characters in script Ol_Chiki. Old_Italic = _Old_Italic // Old_Italic is the set of Unicode characters in script Old_Italic. Old_Persian = _Old_Persian // Old_Persian is the set of Unicode characters in script Old_Persian. Old_South_Arabian = _Old_South_Arabian // Old_South_Arabian is the set of Unicode characters in script Old_South_Arabian. Old_Turkic = _Old_Turkic // Old_Turkic is the set of Unicode characters in script Old_Turkic. Oriya = _Oriya // Oriya is the set of Unicode characters in script Oriya. Osmanya = _Osmanya // Osmanya is the set of Unicode characters in script Osmanya. Phags_Pa = _Phags_Pa // Phags_Pa is the set of Unicode characters in script Phags_Pa. Phoenician = _Phoenician // Phoenician is the set of Unicode characters in script Phoenician. Rejang = _Rejang // Rejang is the set of Unicode characters in script Rejang. Runic = _Runic // Runic is the set of Unicode characters in script Runic. Samaritan = _Samaritan // Samaritan is the set of Unicode characters in script Samaritan. Saurashtra = _Saurashtra // Saurashtra is the set of Unicode characters in script Saurashtra. Sharada = _Sharada // Sharada is the set of Unicode characters in script Sharada. Shavian = _Shavian // Shavian is the set of Unicode characters in script Shavian. Sinhala = _Sinhala // Sinhala is the set of Unicode characters in script Sinhala. Sora_Sompeng = _Sora_Sompeng // Sora_Sompeng is the set of Unicode characters in script Sora_Sompeng. Sundanese = _Sundanese // Sundanese is the set of Unicode characters in script Sundanese. Syloti_Nagri = _Syloti_Nagri // Syloti_Nagri is the set of Unicode characters in script Syloti_Nagri. Syriac = _Syriac // Syriac is the set of Unicode characters in script Syriac. Tagalog = _Tagalog // Tagalog is the set of Unicode characters in script Tagalog. Tagbanwa = _Tagbanwa // Tagbanwa is the set of Unicode characters in script Tagbanwa. Tai_Le = _Tai_Le // Tai_Le is the set of Unicode characters in script Tai_Le. Tai_Tham = _Tai_Tham // Tai_Tham is the set of Unicode characters in script Tai_Tham. Tai_Viet = _Tai_Viet // Tai_Viet is the set of Unicode characters in script Tai_Viet. Takri = _Takri // Takri is the set of Unicode characters in script Takri. Tamil = _Tamil // Tamil is the set of Unicode characters in script Tamil. Telugu = _Telugu // Telugu is the set of Unicode characters in script Telugu. Thaana = _Thaana // Thaana is the set of Unicode characters in script Thaana. Thai = _Thai // Thai is the set of Unicode characters in script Thai. Tibetan = _Tibetan // Tibetan is the set of Unicode characters in script Tibetan. Tifinagh = _Tifinagh // Tifinagh is the set of Unicode characters in script Tifinagh. Ugaritic = _Ugaritic // Ugaritic is the set of Unicode characters in script Ugaritic. Vai = _Vai // Vai is the set of Unicode characters in script Vai. Yi = _Yi // Yi is the set of Unicode characters in script Yi. ) ``` 这些变量的类型也是\*RangeTable。 ``` var ( ASCII_Hex_Digit = _ASCII_Hex_Digit // ASCII_Hex_Digit is the set of Unicode characters with property ASCII_Hex_Digit. Bidi_Control = _Bidi_Control // Bidi_Control is the set of Unicode characters with property Bidi_Control. Dash = _Dash // Dash is the set of Unicode characters with property Dash. Deprecated = _Deprecated // Deprecated is the set of Unicode characters with property Deprecated. Diacritic = _Diacritic // Diacritic is the set of Unicode characters with property Diacritic. Extender = _Extender // Extender is the set of Unicode characters with property Extender. Hex_Digit = _Hex_Digit // Hex_Digit is the set of Unicode characters with property Hex_Digit. Hyphen = _Hyphen // Hyphen is the set of Unicode characters with property Hyphen. IDS_Binary_Operator = _IDS_Binary_Operator // IDS_Binary_Operator is the set of Unicode characters with property IDS_Binary_Operator. IDS_Trinary_Operator = _IDS_Trinary_Operator // IDS_Trinary_Operator is the set of Unicode characters with property IDS_Trinary_Operator. Ideographic = _Ideographic // Ideographic is the set of Unicode characters with property Ideographic. Join_Control = _Join_Control // Join_Control is the set of Unicode characters with property Join_Control. Logical_Order_Exception = _Logical_Order_Exception // Logical_Order_Exception is the set of Unicode characters with property Logical_Order_Exception. Noncharacter_Code_Point = _Noncharacter_Code_Point // Noncharacter_Code_Point is the set of Unicode characters with property Noncharacter_Code_Point. Other_Alphabetic = _Other_Alphabetic // Other_Alphabetic is the set of Unicode characters with property Other_Alphabetic. Other_Default_Ignorable_Code_Point = _Other_Default_Ignorable_Code_Point // Other_Default_Ignorable_Code_Point is the set of Unicode characters with property Other_Default_Ignorable_Code_Point. Other_Grapheme_Extend = _Other_Grapheme_Extend // Other_Grapheme_Extend is the set of Unicode characters with property Other_Grapheme_Extend. Other_ID_Continue = _Other_ID_Continue // Other_ID_Continue is the set of Unicode characters with property Other_ID_Continue. Other_ID_Start = _Other_ID_Start // Other_ID_Start is the set of Unicode characters with property Other_ID_Start. Other_Lowercase = _Other_Lowercase // Other_Lowercase is the set of Unicode characters with property Other_Lowercase. Other_Math = _Other_Math // Other_Math is the set of Unicode characters with property Other_Math. Other_Uppercase = _Other_Uppercase // Other_Uppercase is the set of Unicode characters with property Other_Uppercase. Pattern_Syntax = _Pattern_Syntax // Pattern_Syntax is the set of Unicode characters with property Pattern_Syntax. Pattern_White_Space = _Pattern_White_Space // Pattern_White_Space is the set of Unicode characters with property Pattern_White_Space. Quotation_Mark = _Quotation_Mark // Quotation_Mark is the set of Unicode characters with property Quotation_Mark. Radical = _Radical // Radical is the set of Unicode characters with property Radical. STerm = _STerm // STerm is the set of Unicode characters with property STerm. Soft_Dotted = _Soft_Dotted // Soft_Dotted is the set of Unicode characters with property Soft_Dotted. Terminal_Punctuation = _Terminal_Punctuation // Terminal_Punctuation is the set of Unicode characters with property Terminal_Punctuation. Unified_Ideograph = _Unified_Ideograph // Unified_Ideograph is the set of Unicode characters with property Unified_Ideograph. Variation_Selector = _Variation_Selector // Variation_Selector is the set of Unicode characters with property Variation_Selector. White_Space = _White_Space // White_Space is the set of Unicode characters with property White_Space. ) ``` 这些变量的类型还是\*RangeTable。 ``` var CaseRanges = _CaseRanges ``` CaseRanges is the table describing case mappings for all letters with non-self mappings. ``` var Categories = map[string]*RangeTable{ "C": C, "Cc": Cc, "Cf": Cf, "Co": Co, "Cs": Cs, "L": L, "Ll": Ll, "Lm": Lm, "Lo": Lo, "Lt": Lt, "Lu": Lu, "M": M, "Mc": Mc, "Me": Me, "Mn": Mn, "N": N, "Nd": Nd, "Nl": Nl, "No": No, "P": P, "Pc": Pc, "Pd": Pd, "Pe": Pe, "Pf": Pf, "Pi": Pi, "Po": Po, "Ps": Ps, "S": S, "Sc": Sc, "Sk": Sk, "Sm": Sm, "So": So, "Z": Z, "Zl": Zl, "Zp": Zp, "Zs": Zs, } ``` Categories is the set of Unicode category tables. ``` var FoldCategory = map[string]*RangeTable{ "Common": foldCommon, "Greek": foldGreek, "Inherited": foldInherited, "L": foldL, "Ll": foldLl, "Lt": foldLt, "Lu": foldLu, "M": foldM, "Mn": foldMn, } ``` FoldCategory maps a category name to a table of code points outside the category that are equivalent under simple case folding to code points inside the category. If there is no entry for a category name, there are no such points. ``` var FoldScript = map[string]*RangeTable{} ``` FoldScript maps a script name to a table of code points outside the script that are equivalent under simple case folding to code points inside the script. If there is no entry for a script name, there are no such points. ``` var GraphicRanges = []*RangeTable{ L, M, N, P, S, Zs, } ``` GraphicRanges defines the set of graphic characters according to Unicode. ``` var PrintRanges = []*RangeTable{ L, M, N, P, S, } ``` PrintRanges defines the set of printable characters according to Go. ASCII space, U+0020, is handled separately. ``` var Properties = map[string]*RangeTable{ "ASCII_Hex_Digit": ASCII_Hex_Digit, "Bidi_Control": Bidi_Control, "Dash": Dash, "Deprecated": Deprecated, "Diacritic": Diacritic, "Extender": Extender, "Hex_Digit": Hex_Digit, "Hyphen": Hyphen, "IDS_Binary_Operator": IDS_Binary_Operator, "IDS_Trinary_Operator": IDS_Trinary_Operator, "Ideographic": Ideographic, "Join_Control": Join_Control, "Logical_Order_Exception": Logical_Order_Exception, "Noncharacter_Code_Point": Noncharacter_Code_Point, "Other_Alphabetic": Other_Alphabetic, "Other_Default_Ignorable_Code_Point": Other_Default_Ignorable_Code_Point, "Other_Grapheme_Extend": Other_Grapheme_Extend, "Other_ID_Continue": Other_ID_Continue, "Other_ID_Start": Other_ID_Start, "Other_Lowercase": Other_Lowercase, "Other_Math": Other_Math, "Other_Uppercase": Other_Uppercase, "Pattern_Syntax": Pattern_Syntax, "Pattern_White_Space": Pattern_White_Space, "Quotation_Mark": Quotation_Mark, "Radical": Radical, "STerm": STerm, "Soft_Dotted": Soft_Dotted, "Terminal_Punctuation": Terminal_Punctuation, "Unified_Ideograph": Unified_Ideograph, "Variation_Selector": Variation_Selector, "White_Space": White_Space, } ``` Properties is the set of Unicode property tables. ``` var Scripts = map[string]*RangeTable{ "Arabic": Arabic, "Armenian": Armenian, "Avestan": Avestan, "Balinese": Balinese, "Bamum": Bamum, "Batak": Batak, "Bengali": Bengali, "Bopomofo": Bopomofo, "Brahmi": Brahmi, "Braille": Braille, "Buginese": Buginese, "Buhid": Buhid, "Canadian_Aboriginal": Canadian_Aboriginal, "Carian": Carian, "Chakma": Chakma, "Cham": Cham, "Cherokee": Cherokee, "Common": Common, "Coptic": Coptic, "Cuneiform": Cuneiform, "Cypriot": Cypriot, "Cyrillic": Cyrillic, "Deseret": Deseret, "Devanagari": Devanagari, "Egyptian_Hieroglyphs": Egyptian_Hieroglyphs, "Ethiopic": Ethiopic, "Georgian": Georgian, "Glagolitic": Glagolitic, "Gothic": Gothic, "Greek": Greek, "Gujarati": Gujarati, "Gurmukhi": Gurmukhi, "Han": Han, "Hangul": Hangul, "Hanunoo": Hanunoo, "Hebrew": Hebrew, "Hiragana": Hiragana, "Imperial_Aramaic": Imperial_Aramaic, "Inherited": Inherited, "Inscriptional_Pahlavi": Inscriptional_Pahlavi, "Inscriptional_Parthian": Inscriptional_Parthian, "Javanese": Javanese, "Kaithi": Kaithi, "Kannada": Kannada, "Katakana": Katakana, "Kayah_Li": Kayah_Li, "Kharoshthi": Kharoshthi, "Khmer": Khmer, "Lao": Lao, "Latin": Latin, "Lepcha": Lepcha, "Limbu": Limbu, "Linear_B": Linear_B, "Lisu": Lisu, "Lycian": Lycian, "Lydian": Lydian, "Malayalam": Malayalam, "Mandaic": Mandaic, "Meetei_Mayek": Meetei_Mayek, "Meroitic_Cursive": Meroitic_Cursive, "Meroitic_Hieroglyphs": Meroitic_Hieroglyphs, "Miao": Miao, "Mongolian": Mongolian, "Myanmar": Myanmar, "New_Tai_Lue": New_Tai_Lue, "Nko": Nko, "Ogham": Ogham, "Ol_Chiki": Ol_Chiki, "Old_Italic": Old_Italic, "Old_Persian": Old_Persian, "Old_South_Arabian": Old_South_Arabian, "Old_Turkic": Old_Turkic, "Oriya": Oriya, "Osmanya": Osmanya, "Phags_Pa": Phags_Pa, "Phoenician": Phoenician, "Rejang": Rejang, "Runic": Runic, "Samaritan": Samaritan, "Saurashtra": Saurashtra, "Sharada": Sharada, "Shavian": Shavian, "Sinhala": Sinhala, "Sora_Sompeng": Sora_Sompeng, "Sundanese": Sundanese, "Syloti_Nagri": Syloti_Nagri, "Syriac": Syriac, "Tagalog": Tagalog, "Tagbanwa": Tagbanwa, "Tai_Le": Tai_Le, "Tai_Tham": Tai_Tham, "Tai_Viet": Tai_Viet, "Takri": Takri, "Tamil": Tamil, "Telugu": Telugu, "Thaana": Thaana, "Thai": Thai, "Tibetan": Tibetan, "Tifinagh": Tifinagh, "Ugaritic": Ugaritic, "Vai": Vai, "Yi": Yi, } ``` Scripts is the set of Unicode script tables. ## type [CaseRange](https://github.com/golang/go/blob/master/src/unicode/letter.go#L54 "View Source") ``` type CaseRange struct { Lo uint32 Hi uint32 Delta d // d为[MaxCase]rune的命名类型 } ``` 代表简单的unicode码值的一一映射。范围为[Lo, Hi]，步长为1。该范围内的每个值+Delta[UpperCase]表示对应的大写字母；该范围内的每个值+Delta[LowerCase]表示对应的小写字母；该范围内的每个值+Delta[TitleCase]表示对应的标题字母。 Delta数组里的值可为负数或零。如果Delta数组是： ``` {UpperLower, UpperLower, UpperLower} ``` 表示[Lo, Hi]范围的字符序列是交替的、对应的大写字母小写字母对。否则常数UpperLower不能用Delta数组里。 ## type [Range16](https://github.com/golang/go/blob/master/src/unicode/letter.go#L29 "View Source") ``` type Range16 struct { Lo uint16 Hi uint16 Stride uint16 } ``` 代表一系列16位unicode码值，范围为Lo到Hi（可以是Lo/Hi），步长为Stride。 ## type [Range32](https://github.com/golang/go/blob/master/src/unicode/letter.go#L38 "View Source") ``` type Range32 struct { Lo uint32 Hi uint32 Stride uint32 } ``` 代表一系列32位unicode码值，范围为Lo到Hi（可以是Lo/Hi），步长为Stride；Lo和Hi必须大于等于1<<16。 ## type [RangeTable](https://github.com/golang/go/blob/master/src/unicode/letter.go#L21 "View Source") ``` type RangeTable struct { R16 []Range16 R32 []Range32 // R32不能包含低于0x10000（即1<<16）的值 LatinOffset int // R16字段中Hi <= MaxLatin1的成员数 } ``` 通过列出集合中码值的范围，定义了一个unicode码值的集合。出于节省空间，范围保存在两个切片里，分别保存16位字符的范围和32位字符的范围。R16和R32必须是有序排列的，且互不重叠的。 ## type [SpecialCase](https://github.com/golang/go/blob/master/src/unicode/letter.go#L62 "View Source") ``` type SpecialCase []CaseRange ``` SpecialCase代表特定语言的字符映射，如土耳其语。本类型的方法（通过覆盖）定制了标准映射。 ``` var AzeriCase SpecialCase = _TurkishCase ``` ``` var TurkishCase SpecialCase = _TurkishCase ``` ### func (SpecialCase) [ToLower](https://github.com/golang/go/blob/master/src/unicode/letter.go#L299 "View Source") ``` func (special SpecialCase) ToLower(r rune) rune ``` 按特定映射，返回对应的小写字母。 ### func (SpecialCase) [ToUpper](https://github.com/golang/go/blob/master/src/unicode/letter.go#L281 "View Source") ``` func (special SpecialCase) ToUpper(r rune) rune ``` 按特定映射，返回对应的大写字母。 ### func (SpecialCase) [ToTitle](https://github.com/golang/go/blob/master/src/unicode/letter.go#L290 "View Source") ``` func (special SpecialCase) ToTitle(r rune) rune ``` 按特定映射，返回对应的标题字母。 ## func [Is](https://github.com/golang/go/blob/master/src/unicode/letter.go#L155 "View Source") ``` func Is(rangeTab *RangeTable, r rune) bool ``` 函数报告r是否在rangeTab指定的字符范围内。 ## func [In](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L69 "View Source") ``` func In(r rune, ranges ...*RangeTable) bool ``` 函数报告r是否是给出的某个字母集的成员。 ## func [IsOneOf](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L59 "View Source") ``` func IsOneOf(ranges []*RangeTable, r rune) bool ``` 函数报告r是否是ranges某个成员指定的字符范围内。本函数的功能类似In，应优先使用In函数。 ## func [IsSpace](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L126 "View Source") ``` func IsSpace(r rune) bool ``` IsSpace报告一个字符是否是空白字符。在Latin-1字符空间中，空白字符为： ``` '\t', '\n', '\v', '\f', '\r', ' ', U+0085 (NEL), U+00A0 (NBSP). ``` 其它的空白字符请参见策略Z和属性Pattern_White_Space。 ## func [IsDigit](https://github.com/golang/go/blob/master/src/unicode/digit.go#L8 "View Source") ``` func IsDigit(r rune) bool ``` IsDigit报告一个字符是否是十进制数字字符。 ## func [IsNumber](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L104 "View Source") ``` func IsNumber(r rune) bool ``` IsNumber报告一个字符是否是数字字符，参见策略N。 ## func [IsLetter](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L90 "View Source") ``` func IsLetter(r rune) bool ``` IsLetter报告一个字符是否是字母，参见策略L。 ## func [IsGraphic](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L36 "View Source") ``` func IsGraphic(r rune) bool ``` 报告一个字符是否是unicode图形。包括字母、标记、数字、符号、标点、空白，参见L、M、N、P、S、Zs。 ## func [IsMark](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L98 "View Source") ``` func IsMark(r rune) bool ``` IsMark报告一个字符是否是标记字符，参见策略M。 ## func [IsPrint](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L50 "View Source") ``` func IsPrint(r rune) bool ``` IsPrint一个字符是否是go的可打印字符。本函数基本和IsGraphic一致，只是ASCII空白字符U+0020会返回假。 ## func [IsControl](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L81 "View Source") ``` func IsControl(r rune) bool ``` IsControl报告一个字符是否是控制字符，主要是策略C的字符和一些其他的字符如代理字符。 ## func [IsPunct](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L113 "View Source") ``` func IsPunct(r rune) bool ``` IsPunct报告一个字符是否是unicode标点字符，参见策略P。 ## func [IsSymbol](https://github.com/golang/go/blob/master/src/unicode/graphic.go#L139 "View Source") ``` func IsSymbol(r rune) bool ``` IsPunct报告一个字符是否是unicode符号字符。 ## func [IsLower](https://github.com/golang/go/blob/master/src/unicode/letter.go#L189 "View Source") ``` func IsLower(r rune) bool ``` 返回字符是否是小写字母。 ## func [IsUpper](https://github.com/golang/go/blob/master/src/unicode/letter.go#L180 "View Source") ``` func IsUpper(r rune) bool ``` 返回字符是否是大写字母。 ## func [IsTitle](https://github.com/golang/go/blob/master/src/unicode/letter.go#L198 "View Source") ``` func IsTitle(r rune) bool ``` 返回字符是否是标题字母。 ## func [To](https://github.com/golang/go/blob/master/src/unicode/letter.go#L243 "View Source") ``` func To(_case int, r rune) rune ``` 返回\_case指定的对应类型的字母：UpperCase、LowerCase、TitleCase。 ## func [ToLower](https://github.com/golang/go/blob/master/src/unicode/letter.go#L259 "View Source") ``` func ToLower(r rune) rune ``` 返回对应的小写字母。 ## func [ToUpper](https://github.com/golang/go/blob/master/src/unicode/letter.go#L248 "View Source") ``` func ToUpper(r rune) rune ``` 返回对应的大写字母。 ## func [ToTitle](https://github.com/golang/go/blob/master/src/unicode/letter.go#L270 "View Source") ``` func ToTitle(r rune) rune ``` 返回对应的标题字母。 ## func [SimpleFold](https://github.com/golang/go/blob/master/src/unicode/letter.go#L331 "View Source") ``` func SimpleFold(r rune) rune ``` SimpleFold函数迭代在unicode标准字符映射中互相对应的unicode码值。在与r对应的码值中（包括r自身），会返回最小的那个大于r的字符（如果有）；否则返回映射中最小的字符。举例： ``` SimpleFold('A') = 'a' SimpleFold('a') = 'A' SimpleFold('K') = 'k' SimpleFold('k') = '\u212A' (Kelvin symbol, K) SimpleFold('\u212A') = 'K' SimpleFold('1') = '1' ``` ## Bugs [☞](https://github.com/golang/go/blob/master/src/unicode/letter.go#L64 "View Source") 没有全字符（包含多个rune的字符）折叠的机制。