diff options
Diffstat (limited to 'src/mbgl/util/i18n.cpp')
| -rw-r--r-- | src/mbgl/util/i18n.cpp | 254 |
1 files changed, 229 insertions, 25 deletions
diff --git a/src/mbgl/util/i18n.cpp b/src/mbgl/util/i18n.cpp index 33ce5e22de..8e56877a64 100644 --- a/src/mbgl/util/i18n.cpp +++ b/src/mbgl/util/i18n.cpp @@ -1,5 +1,7 @@ #include "i18n.hpp" +#include <map> + namespace { /** Defines a function that returns true if a codepoint is in a named block. @@ -8,7 +10,7 @@ namespace { @param last The last codepoint in the block, inclusive. */ #define DEFINE_IS_IN_UNICODE_BLOCK(name, first, last) \ - inline bool isIn##name(uint16_t codepoint) { \ + inline bool isIn##name(char16_t codepoint) { \ return codepoint >= first && codepoint <= last; \ } @@ -16,7 +18,7 @@ namespace { // Keep it synchronized with <http://www.unicode.org/Public/UCD/latest/ucd/Blocks.txt>. // DEFINE_IS_IN_UNICODE_BLOCK(BasicLatin, 0x0000, 0x007F) -// DEFINE_IS_IN_UNICODE_BLOCK(Latin1Supplement, 0x0080, 0x00FF) +DEFINE_IS_IN_UNICODE_BLOCK(Latin1Supplement, 0x0080, 0x00FF) // DEFINE_IS_IN_UNICODE_BLOCK(LatinExtendedA, 0x0100, 0x017F) // DEFINE_IS_IN_UNICODE_BLOCK(LatinExtendedB, 0x0180, 0x024F) // DEFINE_IS_IN_UNICODE_BLOCK(IPAExtensions, 0x0250, 0x02AF) @@ -50,11 +52,11 @@ namespace { // DEFINE_IS_IN_UNICODE_BLOCK(Tibetan, 0x0F00, 0x0FFF) // DEFINE_IS_IN_UNICODE_BLOCK(Myanmar, 0x1000, 0x109F) // DEFINE_IS_IN_UNICODE_BLOCK(Georgian, 0x10A0, 0x10FF) -// DEFINE_IS_IN_UNICODE_BLOCK(HangulJamo, 0x1100, 0x11FF) +DEFINE_IS_IN_UNICODE_BLOCK(HangulJamo, 0x1100, 0x11FF) // DEFINE_IS_IN_UNICODE_BLOCK(Ethiopic, 0x1200, 0x137F) // DEFINE_IS_IN_UNICODE_BLOCK(EthiopicSupplement, 0x1380, 0x139F) // DEFINE_IS_IN_UNICODE_BLOCK(Cherokee, 0x13A0, 0x13FF) -// DEFINE_IS_IN_UNICODE_BLOCK(UnifiedCanadianAboriginalSyllabics, 0x1400, 0x167F) +DEFINE_IS_IN_UNICODE_BLOCK(UnifiedCanadianAboriginalSyllabics, 0x1400, 0x167F) // DEFINE_IS_IN_UNICODE_BLOCK(Ogham, 0x1680, 0x169F) // DEFINE_IS_IN_UNICODE_BLOCK(Runic, 0x16A0, 0x16FF) // DEFINE_IS_IN_UNICODE_BLOCK(Tagalog, 0x1700, 0x171F) @@ -63,7 +65,7 @@ namespace { // DEFINE_IS_IN_UNICODE_BLOCK(Tagbanwa, 0x1760, 0x177F) // DEFINE_IS_IN_UNICODE_BLOCK(Khmer, 0x1780, 0x17FF) // DEFINE_IS_IN_UNICODE_BLOCK(Mongolian, 0x1800, 0x18AF) -// DEFINE_IS_IN_UNICODE_BLOCK(UnifiedCanadianAboriginalSyllabicsExtended, 0x18B0, 0x18FF) +DEFINE_IS_IN_UNICODE_BLOCK(UnifiedCanadianAboriginalSyllabicsExtended, 0x18B0, 0x18FF) // DEFINE_IS_IN_UNICODE_BLOCK(Limbu, 0x1900, 0x194F) // DEFINE_IS_IN_UNICODE_BLOCK(TaiLe, 0x1950, 0x197F) // DEFINE_IS_IN_UNICODE_BLOCK(NewTaiLue, 0x1980, 0x19DF) @@ -84,22 +86,22 @@ namespace { // DEFINE_IS_IN_UNICODE_BLOCK(CombiningDiacriticalMarksSupplement, 0x1DC0, 0x1DFF) // DEFINE_IS_IN_UNICODE_BLOCK(LatinExtendedAdditional, 0x1E00, 0x1EFF) // DEFINE_IS_IN_UNICODE_BLOCK(GreekExtended, 0x1F00, 0x1FFF) -// DEFINE_IS_IN_UNICODE_BLOCK(GeneralPunctuation, 0x2000, 0x206F) +DEFINE_IS_IN_UNICODE_BLOCK(GeneralPunctuation, 0x2000, 0x206F) // DEFINE_IS_IN_UNICODE_BLOCK(SuperscriptsandSubscripts, 0x2070, 0x209F) // DEFINE_IS_IN_UNICODE_BLOCK(CurrencySymbols, 0x20A0, 0x20CF) // DEFINE_IS_IN_UNICODE_BLOCK(CombiningDiacriticalMarksforSymbols, 0x20D0, 0x20FF) -// DEFINE_IS_IN_UNICODE_BLOCK(LetterlikeSymbols, 0x2100, 0x214F) -// DEFINE_IS_IN_UNICODE_BLOCK(NumberForms, 0x2150, 0x218F) +DEFINE_IS_IN_UNICODE_BLOCK(LetterlikeSymbols, 0x2100, 0x214F) +DEFINE_IS_IN_UNICODE_BLOCK(NumberForms, 0x2150, 0x218F) // DEFINE_IS_IN_UNICODE_BLOCK(Arrows, 0x2190, 0x21FF) // DEFINE_IS_IN_UNICODE_BLOCK(MathematicalOperators, 0x2200, 0x22FF) -// DEFINE_IS_IN_UNICODE_BLOCK(MiscellaneousTechnical, 0x2300, 0x23FF) -// DEFINE_IS_IN_UNICODE_BLOCK(ControlPictures, 0x2400, 0x243F) -// DEFINE_IS_IN_UNICODE_BLOCK(OpticalCharacterRecognition, 0x2440, 0x245F) -// DEFINE_IS_IN_UNICODE_BLOCK(EnclosedAlphanumerics, 0x2460, 0x24FF) +DEFINE_IS_IN_UNICODE_BLOCK(MiscellaneousTechnical, 0x2300, 0x23FF) +DEFINE_IS_IN_UNICODE_BLOCK(ControlPictures, 0x2400, 0x243F) +DEFINE_IS_IN_UNICODE_BLOCK(OpticalCharacterRecognition, 0x2440, 0x245F) +DEFINE_IS_IN_UNICODE_BLOCK(EnclosedAlphanumerics, 0x2460, 0x24FF) // DEFINE_IS_IN_UNICODE_BLOCK(BoxDrawing, 0x2500, 0x257F) // DEFINE_IS_IN_UNICODE_BLOCK(BlockElements, 0x2580, 0x259F) -// DEFINE_IS_IN_UNICODE_BLOCK(GeometricShapes, 0x25A0, 0x25FF) -// DEFINE_IS_IN_UNICODE_BLOCK(MiscellaneousSymbols, 0x2600, 0x26FF) +DEFINE_IS_IN_UNICODE_BLOCK(GeometricShapes, 0x25A0, 0x25FF) +DEFINE_IS_IN_UNICODE_BLOCK(MiscellaneousSymbols, 0x2600, 0x26FF) // DEFINE_IS_IN_UNICODE_BLOCK(Dingbats, 0x2700, 0x27BF) // DEFINE_IS_IN_UNICODE_BLOCK(MiscellaneousMathematicalSymbolsA, 0x27C0, 0x27EF) // DEFINE_IS_IN_UNICODE_BLOCK(SupplementalArrowsA, 0x27F0, 0x27FF) @@ -123,15 +125,15 @@ DEFINE_IS_IN_UNICODE_BLOCK(CJKSymbolsandPunctuation, 0x3000, 0x303F) DEFINE_IS_IN_UNICODE_BLOCK(Hiragana, 0x3040, 0x309F) DEFINE_IS_IN_UNICODE_BLOCK(Katakana, 0x30A0, 0x30FF) DEFINE_IS_IN_UNICODE_BLOCK(Bopomofo, 0x3100, 0x312F) -// DEFINE_IS_IN_UNICODE_BLOCK(HangulCompatibilityJamo, 0x3130, 0x318F) -// DEFINE_IS_IN_UNICODE_BLOCK(Kanbun, 0x3190, 0x319F) +DEFINE_IS_IN_UNICODE_BLOCK(HangulCompatibilityJamo, 0x3130, 0x318F) +DEFINE_IS_IN_UNICODE_BLOCK(Kanbun, 0x3190, 0x319F) DEFINE_IS_IN_UNICODE_BLOCK(BopomofoExtended, 0x31A0, 0x31BF) DEFINE_IS_IN_UNICODE_BLOCK(CJKStrokes, 0x31C0, 0x31EF) DEFINE_IS_IN_UNICODE_BLOCK(KatakanaPhoneticExtensions, 0x31F0, 0x31FF) DEFINE_IS_IN_UNICODE_BLOCK(EnclosedCJKLettersandMonths, 0x3200, 0x32FF) DEFINE_IS_IN_UNICODE_BLOCK(CJKCompatibility, 0x3300, 0x33FF) DEFINE_IS_IN_UNICODE_BLOCK(CJKUnifiedIdeographsExtensionA, 0x3400, 0x4DBF) -// DEFINE_IS_IN_UNICODE_BLOCK(YijingHexagramSymbols, 0x4DC0, 0x4DFF) +DEFINE_IS_IN_UNICODE_BLOCK(YijingHexagramSymbols, 0x4DC0, 0x4DFF) DEFINE_IS_IN_UNICODE_BLOCK(CJKUnifiedIdeographs, 0x4E00, 0x9FFF) DEFINE_IS_IN_UNICODE_BLOCK(YiSyllables, 0xA000, 0xA48F) DEFINE_IS_IN_UNICODE_BLOCK(YiRadicals, 0xA490, 0xA4CF) @@ -148,7 +150,7 @@ DEFINE_IS_IN_UNICODE_BLOCK(YiRadicals, 0xA490, 0xA4CF) // DEFINE_IS_IN_UNICODE_BLOCK(DevanagariExtended, 0xA8E0, 0xA8FF) // DEFINE_IS_IN_UNICODE_BLOCK(KayahLi, 0xA900, 0xA92F) // DEFINE_IS_IN_UNICODE_BLOCK(Rejang, 0xA930, 0xA95F) -// DEFINE_IS_IN_UNICODE_BLOCK(HangulJamoExtendedA, 0xA960, 0xA97F) +DEFINE_IS_IN_UNICODE_BLOCK(HangulJamoExtendedA, 0xA960, 0xA97F) // DEFINE_IS_IN_UNICODE_BLOCK(Javanese, 0xA980, 0xA9DF) // DEFINE_IS_IN_UNICODE_BLOCK(MyanmarExtendedB, 0xA9E0, 0xA9FF) // DEFINE_IS_IN_UNICODE_BLOCK(Cham, 0xAA00, 0xAA5F) @@ -159,12 +161,12 @@ DEFINE_IS_IN_UNICODE_BLOCK(YiRadicals, 0xA490, 0xA4CF) // DEFINE_IS_IN_UNICODE_BLOCK(LatinExtendedE, 0xAB30, 0xAB6F) // DEFINE_IS_IN_UNICODE_BLOCK(CherokeeSupplement, 0xAB70, 0xABBF) // DEFINE_IS_IN_UNICODE_BLOCK(MeeteiMayek, 0xABC0, 0xABFF) -// DEFINE_IS_IN_UNICODE_BLOCK(HangulSyllables, 0xAC00, 0xD7AF) -// DEFINE_IS_IN_UNICODE_BLOCK(HangulJamoExtendedB, 0xD7B0, 0xD7FF) +DEFINE_IS_IN_UNICODE_BLOCK(HangulSyllables, 0xAC00, 0xD7AF) +DEFINE_IS_IN_UNICODE_BLOCK(HangulJamoExtendedB, 0xD7B0, 0xD7FF) // DEFINE_IS_IN_UNICODE_BLOCK(HighSurrogates, 0xD800, 0xDB7F) // DEFINE_IS_IN_UNICODE_BLOCK(HighPrivateUseSurrogates, 0xDB80, 0xDBFF) // DEFINE_IS_IN_UNICODE_BLOCK(LowSurrogates, 0xDC00, 0xDFFF) -// DEFINE_IS_IN_UNICODE_BLOCK(PrivateUseArea, 0xE000, 0xF8FF) +DEFINE_IS_IN_UNICODE_BLOCK(PrivateUseArea, 0xE000, 0xF8FF) DEFINE_IS_IN_UNICODE_BLOCK(CJKCompatibilityIdeographs, 0xF900, 0xFAFF) // DEFINE_IS_IN_UNICODE_BLOCK(AlphabeticPresentationForms, 0xFB00, 0xFB4F) // DEFINE_IS_IN_UNICODE_BLOCK(ArabicPresentationFormsA, 0xFB50, 0xFDFF) @@ -172,7 +174,7 @@ DEFINE_IS_IN_UNICODE_BLOCK(CJKCompatibilityIdeographs, 0xF900, 0xFAFF) DEFINE_IS_IN_UNICODE_BLOCK(VerticalForms, 0xFE10, 0xFE1F) // DEFINE_IS_IN_UNICODE_BLOCK(CombiningHalfMarks, 0xFE20, 0xFE2F) DEFINE_IS_IN_UNICODE_BLOCK(CJKCompatibilityForms, 0xFE30, 0xFE4F) -// DEFINE_IS_IN_UNICODE_BLOCK(SmallFormVariants, 0xFE50, 0xFE6F) +DEFINE_IS_IN_UNICODE_BLOCK(SmallFormVariants, 0xFE50, 0xFE6F) // DEFINE_IS_IN_UNICODE_BLOCK(ArabicPresentationFormsB, 0xFE70, 0xFEFF) DEFINE_IS_IN_UNICODE_BLOCK(HalfwidthandFullwidthForms, 0xFF00, 0xFFEF) // DEFINE_IS_IN_UNICODE_BLOCK(Specials, 0xFFF0, 0xFFFF) @@ -288,13 +290,33 @@ DEFINE_IS_IN_UNICODE_BLOCK(HalfwidthandFullwidthForms, 0xFF00, 0xFFEF) // DEFINE_IS_IN_UNICODE_BLOCK(VariationSelectorsSupplement, 0xE0100, 0xE01EF) // DEFINE_IS_IN_UNICODE_BLOCK(SupplementaryPrivateUseAreaA, 0xF0000, 0xFFFFF) // DEFINE_IS_IN_UNICODE_BLOCK(SupplementaryPrivateUseAreaB, 0x100000, 0x10FFFF) + +const std::map<char16_t, char16_t> verticalPunctuation = { + { u'!', u'︕' }, { u'#', u'＃' }, { u'$', u'＄' }, { u'%', u'％' }, { u'&', u'＆' }, + { u'(', u'︵' }, { u')', u'︶' }, { u'*', u'＊' }, { u'+', u'＋' }, { u',', u'︐' }, + { u'-', u'︲' }, { u'.', u'・' }, { u'/', u'／' }, { u':', u'︓' }, { u';', u'︔' }, + { u'<', u'︿' }, { u'=', u'＝' }, { u'>', u'﹀' }, { u'?', u'︖' }, { u'@', u'＠' }, + { u'[', u'﹇' }, { u'\\', u'＼' }, { u']', u'﹈' }, { u'^', u'＾' }, { u'_', u'︳' }, + { u'`', u'｀' }, { u'{', u'︷' }, { u'|', u'―' }, { u'}', u'︸' }, { u'~', u'～' }, + { u'¢', u'￠' }, { u'£', u'￡' }, { u'¥', u'￥' }, { u'¦', u'￤' }, { u'¬', u'￢' }, + { u'¯', u'￣' }, { u'–', u'︲' }, { u'—', u'︱' }, { u'‘', u'﹃' }, { u'’', u'﹄' }, + { u'“', u'﹁' }, { u'”', u'﹂' }, { u'…', u'︙' }, { u'‧', u'・' }, { u'₩', u'￦' }, + { u'、', u'︑' }, { u'。', u'︒' }, { u'〈', u'︿' }, { u'〉', u'﹀' }, { u'《', u'︽' }, + { u'》', u'︾' }, { u'「', u'﹁' }, { u'」', u'﹂' }, { u'『', u'﹃' }, { u'』', u'﹄' }, + { u'【', u'︻' }, { u'】', u'︼' }, { u'〔', u'︹' }, { u'〕', u'︺' }, { u'〖', u'︗' }, + { u'〗', u'︘' }, { u'！', u'︕' }, { u'（', u'︵' }, { u'）', u'︶' }, { u'，', u'︐' }, + { u'－', u'︲' }, { u'．', u'・' }, { u'：', u'︓' }, { u'；', u'︔' }, { u'＜', u'︿' }, + { u'＞', u'﹀' }, { u'？', u'︖' }, { u'［', u'﹇' }, { u'］', u'﹈' }, { u'＿', u'︳' }, + { u'｛', u'︷' }, { u'｜', u'―' }, { u'｝', u'︸' }, { u'｟', u'︵' }, { u'｠', u'︶' }, + { u'｡', u'︒' }, { u'｢', u'﹁' }, { u'｣', u'﹂' }, +}; } namespace mbgl { namespace util { namespace i18n { -bool allowsWordBreaking(uint16_t chr) { +bool allowsWordBreaking(char16_t chr) { return (chr == 0x0a /* newline */ || chr == 0x20 /* space */ || chr == 0x26 /* ampersand */ @@ -311,7 +333,7 @@ bool allowsWordBreaking(uint16_t chr) { } bool allowsIdeographicBreaking(const std::u16string& string) { - for (uint16_t chr : string) { + for (char16_t chr : string) { if (!allowsIdeographicBreaking(chr)) { return false; } @@ -319,7 +341,7 @@ bool allowsIdeographicBreaking(const std::u16string& string) { return true; } -bool allowsIdeographicBreaking(uint16_t chr) { +bool allowsIdeographicBreaking(char16_t chr) { // Allow U+2027 "Interpunct" for hyphenation of Chinese words if (chr == 0x2027) return true; @@ -352,6 +374,188 @@ bool allowsIdeographicBreaking(uint16_t chr) { // || isInCJKCompatibilityIdeographsSupplement(chr)); } +bool allowsVerticalWritingMode(const std::u16string& string) { + for (char32_t chr : string) { + if (hasUprightVerticalOrientation(chr)) { + return true; + } + } + return false; +} + +// The following logic comes from +// <http://www.unicode.org/Public/vertical/revision-16/VerticalOrientation-16.txt>. +// The data file denotes with “U” or “Tu” any codepoint that may be drawn +// upright in vertical text but does not distinguish between upright and +// “neutral” characters. + +bool hasUprightVerticalOrientation(char16_t chr) { + if (chr == u'˪' || chr == u'˫') + return true; + + // Return early for characters outside all ranges whose characters remain + // upright in vertical writing mode. + if (chr < 0x1100) + return false; + + if (isInBopomofo(chr) || isInBopomofoExtended(chr)) + return true; + if (isInCJKCompatibilityForms(chr)) { + if (!(chr >= u'﹉' && chr <= u'﹏')) + return true; + } + if (isInCJKCompatibility(chr) || isInCJKCompatibilityIdeographs(chr) || + isInCJKRadicalsSupplement(chr) || isInCJKStrokes(chr)) + return true; + if (isInCJKSymbolsandPunctuation(chr)) { + if (!(chr >= u'〈' && chr <= u'】') && !(chr >= u'〔' && chr <= u'〟') && chr != u'〰') + return true; + } + if (isInCJKUnifiedIdeographs(chr) || isInCJKUnifiedIdeographsExtensionA(chr) || + isInEnclosedCJKLettersandMonths(chr) || isInHangulCompatibilityJamo(chr) || + isInHangulJamo(chr) || isInHangulJamoExtendedA(chr) || isInHangulJamoExtendedB(chr) || + isInHangulSyllables(chr) || isInHiragana(chr) || + isInIdeographicDescriptionCharacters(chr) || isInKanbun(chr) || isInKangxiRadicals(chr)) + return true; + if (isInKatakana(chr)) { + if (chr != u'ー') + return true; + } + if (isInKatakanaPhoneticExtensions(chr)) + return true; + if (isInHalfwidthandFullwidthForms(chr)) { + if (chr != u'（' && chr != u'）' && chr != u'－' && !(chr >= u'：' && chr <= u'＞') && + chr != u'［' && chr != u'］' && chr != u'＿' && !(chr >= u'｛' && chr <= 0xFFDF) && + chr != u'￣' && !(chr >= u'￨' && chr <= 0xFFEF)) + return true; + } + if (isInSmallFormVariants(chr)) { + if (!(chr >= u'﹘' && chr <= u'﹞') && !(chr >= u'﹣' && chr <= u'﹦')) + return true; + } + if (isInUnifiedCanadianAboriginalSyllabics(chr) || + isInUnifiedCanadianAboriginalSyllabicsExtended(chr) || isInVerticalForms(chr) || + isInYijingHexagramSymbols(chr) || isInYiSyllables(chr) || isInYiRadicals(chr)) + return true; + + // https://github.com/mapbox/mapbox-gl/issues/29 + + // if (isInMeroiticHieroglyphs(chr)) return true; + // if (isInSiddham(chr)) return true; + // if (isInEgyptianHieroglyphs(chr)) return true; + // if (isInAnatolianHieroglyphs(chr)) return true; + // if (isInIdeographicSymbolsandPunctuation(chr)) return true; + // if (isInTangut(chr)) return true; + // if (isInTangutComponents(chr)) return true; + // if (isInKanaSupplement(chr)) return true; + // if (isInByzantineMusicalSymbols(chr)) return true; + // if (isInMusicalSymbols(chr)) return true; + // if (isInTaiXuanJingSymbols(chr)) return true; + // if (isInCountingRodNumerals(chr)) return true; + // if (isInSuttonSignWriting(chr)) return true; + // if (isInMahjongTiles(chr)) return true; + // if (isInDominoTiles(chr)) return true; + // if (isInPlayingCards(chr)) return true; + // if (isInEnclosedAlphanumericSupplement(chr)) return true; + // if (isInEnclosedIdeographicSupplement(chr)) return true; + // if (isInMiscellaneousSymbolsandPictographs(chr)) return true; + // if (isInEmoticons(chr)) return true; + // if (isInOrnamentalDingbats(chr)) return true; + // if (isInTransportandMapSymbols(chr)) return true; + // if (isInAlchemicalSymbols(chr)) return true; + // if (isInGeometricShapesExtended(chr)) return true; + // if (isInSupplementalSymbolsandPictographs(chr)) return true; + // if (isInCJKUnifiedIdeographsExtensionB(chr)) return true; + // if (isInCJKUnifiedIdeographsExtensionC(chr)) return true; + // if (isInCJKUnifiedIdeographsExtensionD(chr)) return true; + // if (isInCJKUnifiedIdeographsExtensionE(chr)) return true; + // if (isInCJKCompatibilityIdeographsSupplement(chr)) return true; + + return false; +} + +bool hasNeutralVerticalOrientation(char16_t chr) { + if (isInLatin1Supplement(chr)) { + if (chr == u'§' || chr == u'©' || chr == u'®' || chr == u'±' || chr == u'¼' || + chr == u'½' || chr == u'¾' || chr == u'×' || chr == u'÷') { + return true; + } + } + if (isInGeneralPunctuation(chr)) { + if (chr == u'‖' || chr == u'†' || chr == u'‡' || chr == u'‰' || chr == u'‱' || + chr == u'※' || chr == u'‼' || chr == u'⁂' || chr == u'⁇' || chr == u'⁈' || + chr == u'⁉' || chr == u'⁑') { + return true; + } + } + if (isInLetterlikeSymbols(chr) || isInNumberForms(chr)) { + return true; + } + if (isInMiscellaneousTechnical(chr)) { + if ((chr >= u'⌀' && chr <= u'⌇') || (chr >= u'⌌' && chr <= u'⌟') || + (chr >= u'⌤' && chr <= u'⌨') || chr == u'⌫' || (chr >= u'⍽' && chr <= u'⎚') || + (chr >= u'⎾' && chr <= u'⏍') || chr == u'⏏' || (chr >= u'⏑' && chr <= u'⏛') || + (chr >= u'⏢' && chr <= 0x23FF)) { + return true; + } + } + if (isInControlPictures(chr) || isInOpticalCharacterRecognition(chr) || + isInEnclosedAlphanumerics(chr) || isInGeometricShapes(chr)) { + return true; + } + if (isInMiscellaneousSymbols(chr)) { + if ((chr >= u'⬒' && chr <= u'⬯') || + (chr >= u'⭐' && chr <= 0x2B59 /* heavy circled saltire */) || + (chr >= 0x2BB8 /* upwards white arrow from bar with horizontal bar */ && + chr <= 0x2BEB)) { + return true; + } + } + if (isInCJKSymbolsandPunctuation(chr) || isInKatakana(chr) || isInPrivateUseArea(chr) || + isInCJKCompatibilityForms(chr) || isInSmallFormVariants(chr) || + isInHalfwidthandFullwidthForms(chr)) { + return true; + } + if (chr == u'∞' || chr == u'∴' || chr == u'∵' || + (chr >= 0x2700 /* black safety scissors */ && chr <= u'❧') || + (chr >= u'❶' && chr <= u'➓') || chr == 0xFFFC /* object replacement character */ || + chr == 0xFFFD /* replacement character */) { + return true; + } + return false; +} + +bool hasRotatedVerticalOrientation(char16_t chr) { + return !(hasUprightVerticalOrientation(chr) || hasNeutralVerticalOrientation(chr)); +} + +std::u16string verticalizePunctuation(const std::u16string& input) { + std::u16string output; + + for (size_t i = 0; i < input.size(); i++) { + char16_t nextCharCode = i < input.size() ? input[i + 1] : 0; + char16_t prevCharCode = i ? input[i - 1] : 0; + + bool canReplacePunctuation = + ((!nextCharCode || !hasRotatedVerticalOrientation(nextCharCode) || + verticalPunctuation.count(input[i + 1])) && + (!prevCharCode || !hasRotatedVerticalOrientation(prevCharCode) || + verticalPunctuation.count(input[i - 1]))); + + if (char16_t repl = canReplacePunctuation ? verticalizePunctuation(input[i]) : 0) { + output += repl; + } else { + output += input[i]; + } + } + + return output; +} + +char16_t verticalizePunctuation(char16_t chr) { + return verticalPunctuation.count(chr) ? verticalPunctuation.at(chr) : 0; +} + } // namespace i18n } // namespace util } // namespace mbgl |