package uucd

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package uucd
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Module UucdSource

Unicode character database decoder.

Uucd decodes the data of the Unicode character database from its XML representation. It provides high-level (but not necessarily efficient) access to the data so that efficient representations can be extracted.

Uucd decodes the representation described in the Annex #42 of Unicode 13.0.0. Subsequent versions may be decoded as long as no new cases are introduced in parsed enumerated properties.

Consult the basics.

Note. All strings returned by the module are UTF-8 encoded.

Unicode version 13.0.0

References

Code points

Sourcetype cp = int

The type for Unicode code points, ranges from 0x0000 to 0x10_FFFF.

Sourceval is_cp : int -> bool

is_cp n is true iff n a Unicode code point.

Sourceval is_scalar_value : int -> bool

is_scalar_value n is true iff n is a Unicode scalar value.

Sourcemodule Cpmap : Map.S with type key = cp

Code point maps.

Properties

Properties are referenced by their name and property values by their abbreviated name. To understand their semantics refer to the standard.

Sourcetype props

The type for sets of properties.

Sourcetype 'a prop

The type for properties with property value of type 'a.

Sourceval find : props -> 'a prop -> 'a option

find ps p is the value of property p in ps, if any.

Sourceval unknown_prop : (string * string) -> string prop

unknown_prop (ns, n) is a property read from an XML attribute whose expanded name is (ns, n). This can be used to access a property unknown to the module.

Non Unihan properties

In alphabetical order.

Sourceval age : [ `Version of int * int | `Unassigned ] prop
Sourceval alphabetic : bool prop
Sourceval ascii_hex_digit : bool prop
Sourceval bidi_class : [ `AL | `AN | `B | `BN | `CS | `EN | `ES | `ET | `FSI | `L | `LRE | `LRI | `LRO | `NSM | `ON | `PDF | `PDI | `R | `RLE | `RLI | `RLO | `S | `WS ] prop
Sourceval bidi_control : bool prop
Sourceval bidi_mirrored : bool prop
Sourceval bidi_mirroring_glyph : cp option prop
Sourceval bidi_paired_bracket : [ `Self | `Cp of cp ] prop
Sourceval bidi_paired_bracket_type : [ `O | `C | `N ] prop
Sourceval block : [ `ASCII | `Adlam | `Aegean_Numbers | `Ahom | `Alchemical | `Alphabetic_PF | `Anatolian_Hieroglyphs | `Ancient_Greek_Music | `Ancient_Greek_Numbers | `Ancient_Symbols | `Arabic | `Arabic_Ext_A | `Arabic_Math | `Arabic_PF_A | `Arabic_PF_B | `Arabic_Sup | `Armenian | `Arrows | `Avestan | `Balinese | `Bamum | `Bamum_Sup | `Bassa_Vah | `Batak | `Bengali | `Bhaiksuki | `Block_Elements | `Bopomofo | `Bopomofo_Ext | `Box_Drawing | `Brahmi | `Braille | `Buginese | `Buhid | `Byzantine_Music | `CJK | `CJK_Compat | `CJK_Compat_Forms | `CJK_Compat_Ideographs | `CJK_Compat_Ideographs_Sup | `CJK_Ext_A | `CJK_Ext_B | `CJK_Ext_C | `CJK_Ext_D | `CJK_Ext_E | `CJK_Ext_F | `CJK_Ext_G | `CJK_Radicals_Sup | `CJK_Strokes | `CJK_Symbols | `Carian | `Caucasian_Albanian | `Chakma | `Cham | `Cherokee | `Cherokee_Sup | `Chess_Symbols | `Chorasmian | `Compat_Jamo | `Control_Pictures | `Coptic | `Coptic_Epact_Numbers | `Counting_Rod | `Cuneiform | `Cuneiform_Numbers | `Currency_Symbols | `Cypriot_Syllabary | `Cyrillic | `Cyrillic_Ext_A | `Cyrillic_Ext_B | `Cyrillic_Ext_C | `Cyrillic_Sup | `Deseret | `Devanagari | `Devanagari_Ext | `Diacriticals | `Diacriticals_Ext | `Diacriticals_For_Symbols | `Diacriticals_Sup | `Dingbats | `Dives_Akuru | `Dogra | `Domino | `Duployan | `Early_Dynastic_Cuneiform | `Egyptian_Hieroglyph_Format_Controls | `Egyptian_Hieroglyphs | `Elbasan | `Elymaic | `Emoticons | `Enclosed_Alphanum | `Enclosed_Alphanum_Sup | `Enclosed_CJK | `Enclosed_Ideographic_Sup | `Ethiopic | `Ethiopic_Ext | `Ethiopic_Ext_A | `Ethiopic_Sup | `Geometric_Shapes | `Geometric_Shapes_Ext | `Georgian | `Georgian_Ext | `Georgian_Sup | `Glagolitic | `Glagolitic_Sup | `Gothic | `Grantha | `Greek | `Greek_Ext | `Gujarati | `Gunjala_Gondi | `Gurmukhi | `Half_And_Full_Forms | `Half_Marks | `Hangul | `Hanifi_Rohingya | `Hanunoo | `Hatran | `Hebrew | `High_PU_Surrogates | `High_Surrogates | `Hiragana | `IDC | `IPA_Ext | `Ideographic_Symbols | `Imperial_Aramaic | `Indic_Number_Forms | `Indic_Siyaq_Numbers | `Inscriptional_Pahlavi | `Inscriptional_Parthian | `Jamo | `Jamo_Ext_A | `Jamo_Ext_B | `Javanese | `Kaithi | `Kana_Ext_A | `Kana_Sup | `Kanbun | `Kangxi | `Kannada | `Katakana | `Katakana_Ext | `Kayah_Li | `Kharoshthi | `Khitan_Small_Script | `Khmer | `Khmer_Symbols | `Khojki | `Khudawadi | `Lao | `Latin_1_Sup | `Latin_Ext_A | `Latin_Ext_Additional | `Latin_Ext_B | `Latin_Ext_C | `Latin_Ext_D | `Latin_Ext_E | `Lepcha | `Letterlike_Symbols | `Limbu | `Linear_A | `Linear_B_Ideograms | `Linear_B_Syllabary | `Lisu | `Lisu_Sup | `Low_Surrogates | `Lycian | `Lydian | `Mahajani | `Mahjong | `Makasar | `Malayalam | `Mandaic | `Manichaean | `Marchen | `Masaram_Gondi | `Math_Alphanum | `Math_Operators | `Mayan_Numerals | `Medefaidrin | `Meetei_Mayek | `Meetei_Mayek_Ext | `Mende_Kikakui | `Meroitic_Cursive | `Meroitic_Hieroglyphs | `Miao | `Misc_Arrows | `Misc_Math_Symbols_A | `Misc_Math_Symbols_B | `Misc_Pictographs | `Misc_Symbols | `Misc_Technical | `Modi | `Modifier_Letters | `Modifier_Tone_Letters | `Mongolian | `Mongolian_Sup | `Mro | `Multani | `Music | `Myanmar | `Myanmar_Ext_A | `Myanmar_Ext_B | `NB | `NKo | `Nabataean | `Nandinagari | `New_Tai_Lue | `Newa | `Number_Forms | `Nushu | `Nyiakeng_Puachue_Hmong | `OCR | `Ogham | `Ol_Chiki | `Old_Hungarian | `Old_Italic | `Old_North_Arabian | `Old_Permic | `Old_Persian | `Old_Sogdian | `Old_South_Arabian | `Old_Turkic | `Oriya | `Ornamental_Dingbats | `Osage | `Osmanya | `Ottoman_Siyaq_Numbers | `PUA | `Pahawh_Hmong | `Palmyrene | `Pau_Cin_Hau | `Phags_Pa | `Phaistos | `Phoenician | `Phonetic_Ext | `Phonetic_Ext_Sup | `Playing_Cards | `Psalter_Pahlavi | `Punctuation | `Rejang | `Rumi | `Runic | `Samaritan | `Saurashtra | `Sharada | `Shavian | `Shorthand_Format_Controls | `Siddham | `Sinhala | `Sinhala_Archaic_Numbers | `Small_Forms | `Small_Kana_Ext | `Sogdian | `Sora_Sompeng | `Soyombo | `Specials | `Sundanese | `Sundanese_Sup | `Sup_Arrows_A | `Sup_Arrows_B | `Sup_Arrows_C | `Sup_Math_Operators | `Sup_PUA_A | `Sup_PUA_B | `Sup_Punctuation | `Sup_Symbols_And_Pictographs | `Super_And_Sub | `Sutton_SignWriting | `Syloti_Nagri | `Symbols_And_Pictographs_Ext_A | `Symbols_For_Legacy_Computing | `Syriac | `Syriac_Sup | `Tagalog | `Tagbanwa | `Tags | `Tai_Le | `Tai_Tham | `Tai_Viet | `Tai_Xuan_Jing | `Takri | `Tamil | `Tamil_Sup | `Tangut | `Tangut_Components | `Tangut_Sup | `Telugu | `Thaana | `Thai | `Tibetan | `Tifinagh | `Tirhuta | `Transport_And_Map | `UCAS | `UCAS_Ext | `Ugaritic | `VS | `VS_Sup | `Vai | `Vedic_Ext | `Vertical_Forms | `Wancho | `Warang_Citi | `Yezidi | `Yi_Radicals | `Yi_Syllables | `Yijing | `Zanabazar_Square ] prop
Sourceval canonical_combining_class : int prop
Sourceval cased : bool prop
Sourceval case_folding : [ `Self | `Cps of cp list ] prop
Sourceval case_ignorable : bool prop
Sourceval changes_when_casefolded : bool prop
Sourceval changes_when_casemapped : bool prop
Sourceval changes_when_lowercased : bool prop
Sourceval changes_when_nfkc_casefolded : bool prop
Sourceval changes_when_titlecased : bool prop
Sourceval changes_when_uppercased : bool prop
Sourceval composition_exclusion : bool prop
Sourceval dash : bool prop
Sourceval decomposition_mapping : [ `Self | `Cps of cp list ] prop
Sourceval decomposition_type : [ `Can | `Com | `Enc | `Fin | `Font | `Fra | `Init | `Iso | `Med | `Nar | `Nb | `Sml | `Sqr | `Sub | `Sup | `Vert | `Wide | `None ] prop
Sourceval default_ignorable_code_point : bool prop
Sourceval deprecated : bool prop
Sourceval diacritic : bool prop
Sourceval east_asian_width : [ `A | `F | `H | `N | `Na | `W ] prop
Sourceval emoji : bool prop
Sourceval emoji_presentation : bool prop
Sourceval emoji_modifier : bool prop
Sourceval emoji_modifier_base : bool prop
Sourceval emoji_component : bool prop
Sourceval equivalent_unified_ideograph : cp option prop
Sourceval expands_on_nfc : bool prop
Sourceval expands_on_nfd : bool prop
Sourceval expands_on_nfkc : bool prop
Sourceval expands_on_nfkd : bool prop
Sourceval extended_pictographic : bool prop
Sourceval extender : bool prop
Sourceval fc_nfkc_closure : [ `Self | `Cps of cp list ] prop
Sourceval full_composition_exclusion : bool prop
Sourceval general_category : [ `Lu | `Ll | `Lt | `Lm | `Lo | `Mn | `Mc | `Me | `Nd | `Nl | `No | `Pc | `Pd | `Ps | `Pe | `Pi | `Pf | `Po | `Sm | `Sc | `Sk | `So | `Zs | `Zl | `Zp | `Cc | `Cf | `Cs | `Co | `Cn ] prop
Sourceval grapheme_base : bool prop
Sourceval grapheme_cluster_break : [ `CN | `CR | `EB | `EBG | `EM | `EX | `GAZ | `L | `LF | `LV | `LVT | `PP | `RI | `SM | `T | `V | `XX | `ZWJ ] prop
Sourceval grapheme_extend : bool prop
Sourceval hangul_syllable_type : [ `L | `LV | `LVT | `T | `V | `NA ] prop
Sourceval hex_digit : bool prop
Sourceval hyphen : bool prop
Sourceval id_continue : bool prop
Sourceval id_start : bool prop
Sourceval ideographic : bool prop
Sourceval ids_binary_operator : bool prop
Sourceval ids_trinary_operator : bool prop
Sourceval indic_syllabic_category : [ `Avagraha | `Bindu | `Brahmi_Joining_Number | `Cantillation_Mark | `Consonant | `Consonant_Dead | `Consonant_Final | `Consonant_Head_Letter | `Consonant_Initial_Postfixed | `Consonant_Killer | `Consonant_Medial | `Consonant_Placeholder | `Consonant_Preceding_Repha | `Consonant_Prefixed | `Consonant_Repha | `Consonant_Subjoined | `Consonant_Succeeding_Repha | `Consonant_With_Stacker | `Gemination_Mark | `Invisible_Stacker | `Joiner | `Modifying_Letter | `Non_Joiner | `Nukta | `Number | `Number_Joiner | `Other | `Pure_Killer | `Register_Shifter | `Syllable_Modifier | `Tone_Letter | `Tone_Mark | `Virama | `Visarga | `Vowel | `Vowel_Dependent | `Vowel_Independent ] prop
Sourceval indic_matra_category : [ `Right | `Left | `Visual_Order_Left | `Left_And_Right | `Top | `Bottom | `Top_And_Bottom | `Top_And_Right | `Top_And_Left | `Top_And_Left_And_Right | `Bottom_And_Right | `Top_And_Bottom_And_Right | `Overstruck | `Invisible | `NA ] prop
Sourceval indic_positional_category : [ `Bottom | `Bottom_And_Left | `Bottom_And_Right | `Left | `Left_And_Right | `NA | `Overstruck | `Right | `Top | `Top_And_Bottom | `Top_And_Bottom_And_Left | `Top_And_Bottom_And_Right | `Top_And_Left | `Top_And_Left_And_Right | `Top_And_Right | `Visual_Order_Left ] prop
Sourceval iso_comment : string prop
Sourceval jamo_short_name : string prop
Sourceval join_control : bool prop
Sourceval joining_group : [ `African_Feh | `African_Noon | `African_Qaf | `Ain | `Alaph | `Alef | `Alef_Maqsurah | `Beh | `Beth | `Burushaski_Yeh_Barree | `Dal | `Dalath_Rish | `E | `Farsi_Yeh | `Fe | `Feh | `Final_Semkath | `Gaf | `Gamal | `Hah | `Hanifi_Rohingya_Kinna_Ya | `Hanifi_Rohingya_Pa | `Hamza_On_Heh_Goal | `He | `Heh | `Heh_Goal | `Heth | `Kaf | `Kaph | `Khaph | `Knotted_Heh | `Lam | `Lamadh | `Malayalam_Bha | `Malayalam_Ja | `Malayalam_Lla | `Malayalam_Llla | `Malayalam_Nga | `Malayalam_Nna | `Malayalam_Nnna | `Malayalam_Nya | `Malayalam_Ra | `Malayalam_Ssa | `Malayalam_Tta | `Manichaean_Aleph | `Manichaean_Ayin | `Manichaean_Beth | `Manichaean_Daleth | `Manichaean_Dhamedh | `Manichaean_Five | `Manichaean_Gimel | `Manichaean_Heth | `Manichaean_Hundred | `Manichaean_Kaph | `Manichaean_Lamedh | `Manichaean_Mem | `Manichaean_Nun | `Manichaean_One | `Manichaean_Pe | `Manichaean_Qoph | `Manichaean_Resh | `Manichaean_Sadhe | `Manichaean_Samekh | `Manichaean_Taw | `Manichaean_Ten | `Manichaean_Teth | `Manichaean_Thamedh | `Manichaean_Twenty | `Manichaean_Waw | `Manichaean_Yodh | `Manichaean_Zayin | `Meem | `Mim | `No_Joining_Group | `Noon | `Nun | `Nya | `Pe | `Qaf | `Qaph | `Reh | `Reversed_Pe | `Rohingya_Yeh | `Sad | `Sadhe | `Seen | `Semkath | `Shin | `Straight_Waw | `Swash_Kaf | `Syriac_Waw | `Tah | `Taw | `Teh_Marbuta | `Teh_Marbuta_Goal | `Teth | `Waw | `Yeh | `Yeh_Barree | `Yeh_With_Tail | `Yudh | `Yudh_He | `Zain | `Zhain ] prop
Sourceval joining_type : [ `U | `C | `T | `D | `L | `R ] prop
Sourceval line_break : [ `AI | `AL | `B2 | `BA | `BB | `BK | `CB | `CJ | `CL | `CM | `CP | `CR | `EX | `GL | `H2 | `H3 | `HL | `HY | `ID | `IN | `IS | `JL | `JT | `JV | `LF | `NL | `NS | `NU | `OP | `PO | `PR | `QU | `RI | `SA | `SG | `SP | `SY | `WJ | `XX | `ZW | `EB | `EM | `ZWJ ] prop
Sourceval logical_order_exception : bool prop
Sourceval lowercase : bool prop
Sourceval lowercase_mapping : [ `Self | `Cps of cp list ] prop
Sourceval math : bool prop
Sourceval name : [ `Pattern of string | `Name of string ] prop

In the `Pattern case occurrences of the character '#' (U+0023) in the string must be replaced by the value of the code point as four to six uppercase hexadecimal digits (the minimal needed). E.g. the pattern "CJK UNIFIED IDEOGRAPH-#" associated to code point U+3400 gives the name "CJK UNIFIED IDEOGRAPH-3400".

Sourceval name_alias : (string * [ `Abbreviation | `Alternate | `Control | `Correction | `Figment ]) list prop
Sourceval nfc_quick_check : [ `True | `False | `Maybe ] prop
Sourceval nfd_quick_check : [ `True | `False | `Maybe ] prop
Sourceval nfkc_quick_check : [ `True | `False | `Maybe ] prop
Sourceval nfkc_casefold : [ `Self | `Cps of cp list ] prop
Sourceval nfkd_quick_check : [ `True | `False | `Maybe ] prop
Sourceval noncharacter_code_point : bool prop
Sourceval numeric_type : [ `None | `De | `Di | `Nu ] prop
Sourceval numeric_value : [ `NaN | `Frac of int * int | `Num of int64 ] prop
Sourceval other_alphabetic : bool prop
Sourceval other_default_ignorable_code_point : bool prop
Sourceval other_grapheme_extend : bool prop
Sourceval other_id_continue : bool prop
Sourceval other_id_start : bool prop
Sourceval other_lowercase : bool prop
Sourceval other_math : bool prop
Sourceval other_uppercase : bool prop
Sourceval pattern_syntax : bool prop
Sourceval pattern_white_space : bool prop
Sourceval prepended_concatenation_mark : bool prop
Sourceval quotation_mark : bool prop
Sourceval radical : bool prop
Sourceval regional_indicator : bool prop
Sourcetype script = [
  1. | `Adlm
  2. | `Aghb
  3. | `Ahom
  4. | `Arab
  5. | `Armi
  6. | `Armn
  7. | `Avst
  8. | `Bali
  9. | `Bamu
  10. | `Bass
  11. | `Batk
  12. | `Beng
  13. | `Bhks
  14. | `Bopo
  15. | `Brah
  16. | `Brai
  17. | `Bugi
  18. | `Buhd
  19. | `Cakm
  20. | `Cans
  21. | `Cari
  22. | `Cham
  23. | `Cher
  24. | `Chrs
  25. | `Copt
  26. | `Cprt
  27. | `Cyrl
  28. | `Deva
  29. | `Diak
  30. | `Dogr
  31. | `Dsrt
  32. | `Dupl
  33. | `Egyp
  34. | `Elba
  35. | `Elym
  36. | `Ethi
  37. | `Geor
  38. | `Glag
  39. | `Gong
  40. | `Gonm
  41. | `Goth
  42. | `Gran
  43. | `Grek
  44. | `Gujr
  45. | `Guru
  46. | `Hang
  47. | `Hani
  48. | `Hano
  49. | `Hatr
  50. | `Hebr
  51. | `Hira
  52. | `Hluw
  53. | `Hmng
  54. | `Hmnp
  55. | `Hrkt
  56. | `Hung
  57. | `Ital
  58. | `Java
  59. | `Kali
  60. | `Kana
  61. | `Khar
  62. | `Khmr
  63. | `Khoj
  64. | `Knda
  65. | `Kthi
  66. | `Kits
  67. | `Lana
  68. | `Laoo
  69. | `Latn
  70. | `Lepc
  71. | `Limb
  72. | `Lina
  73. | `Linb
  74. | `Lisu
  75. | `Lyci
  76. | `Lydi
  77. | `Mahj
  78. | `Maka
  79. | `Mand
  80. | `Mani
  81. | `Marc
  82. | `Medf
  83. | `Mend
  84. | `Merc
  85. | `Mero
  86. | `Mlym
  87. | `Modi
  88. | `Mong
  89. | `Mroo
  90. | `Mtei
  91. | `Mult
  92. | `Mymr
  93. | `Nand
  94. | `Narb
  95. | `Nbat
  96. | `Newa
  97. | `Nkoo
  98. | `Nshu
  99. | `Ogam
  100. | `Olck
  101. | `Orkh
  102. | `Orya
  103. | `Osge
  104. | `Osma
  105. | `Palm
  106. | `Pauc
  107. | `Perm
  108. | `Phag
  109. | `Phli
  110. | `Phlp
  111. | `Phnx
  112. | `Plrd
  113. | `Prti
  114. | `Qaai
  115. | `Rjng
  116. | `Rohg
  117. | `Runr
  118. | `Samr
  119. | `Sarb
  120. | `Saur
  121. | `Sgnw
  122. | `Shaw
  123. | `Shrd
  124. | `Sidd
  125. | `Sind
  126. | `Sinh
  127. | `Sogd
  128. | `Sogo
  129. | `Sora
  130. | `Soyo
  131. | `Sund
  132. | `Sylo
  133. | `Syrc
  134. | `Tagb
  135. | `Takr
  136. | `Tale
  137. | `Talu
  138. | `Taml
  139. | `Tang
  140. | `Tavt
  141. | `Telu
  142. | `Tfng
  143. | `Tglg
  144. | `Thaa
  145. | `Thai
  146. | `Tibt
  147. | `Tirh
  148. | `Ugar
  149. | `Vaii
  150. | `Wara
  151. | `Wcho
  152. | `Xpeo
  153. | `Xsux
  154. | `Yezi
  155. | `Yiii
  156. | `Zanb
  157. | `Zinh
  158. | `Zyyy
  159. | `Zzzz
]
Sourceval script : script prop
Sourceval script_extensions : script list prop
Sourceval sentence_break : [ `AT | `CL | `CR | `EX | `FO | `LE | `LF | `LO | `NU | `SC | `SE | `SP | `ST | `UP | `XX ] prop
Sourceval simple_case_folding : [ `Self | `Cp of cp ] prop
Sourceval simple_lowercase_mapping : [ `Self | `Cp of cp ] prop
Sourceval simple_titlecase_mapping : [ `Self | `Cp of cp ] prop
Sourceval simple_uppercase_mapping : [ `Self | `Cp of cp ] prop
Sourceval soft_dotted : bool prop
Sourceval sterm : bool prop
Sourceval terminal_punctuation : bool prop
Sourceval titlecase_mapping : [ `Self | `Cps of cp list ] prop
Sourceval uax_42_element : [ `Reserved | `Noncharacter | `Surrogate | `Char ] prop

Not normative, artefact of Uucd. Corresponds to the XML element name that describes the code point.

Sourceval unicode_1_name : string prop
Sourceval unified_ideograph : bool prop
Sourceval uppercase : bool prop
Sourceval uppercase_mapping : [ `Self | `Cps of cp list ] prop
Sourceval variation_selector : bool prop
Sourceval vertical_orientation : [ `U | `R | `Tu | `Tr ] prop
Sourceval white_space : bool prop
Sourceval word_break : [ `CR | `DQ | `EB | `EBG | `EM | `EX | `Extend | `FO | `GAZ | `HL | `KA | `LE | `LF | `MB | `ML | `MN | `NL | `NU | `RI | `SQ | `WSegSpace | `XX | `ZWJ ] prop
Sourceval xid_continue : bool prop
Sourceval xid_start : bool prop

Unihan properties

In alphabetic order. For now unihan properties are always represented as strings.

Sourceval kAccountingNumeric : string prop
Sourceval kAlternateHanYu : string prop
Sourceval kAlternateJEF : string prop
Sourceval kAlternateKangXi : string prop
Sourceval kAlternateMorohashi : string prop
Sourceval kBigFive : string prop
Sourceval kCCCII : string prop
Sourceval kCNS1986 : string prop
Sourceval kCNS1992 : string prop
Sourceval kCangjie : string prop
Sourceval kCantonese : string prop
Sourceval kCheungBauer : string prop
Sourceval kCheungBauerIndex : string prop
Sourceval kCihaiT : string prop
Sourceval kCompatibilityVariant : string prop
Sourceval kCowles : string prop
Sourceval kDaeJaweon : string prop
Sourceval kDefinition : string prop
Sourceval kEACC : string prop
Sourceval kFenn : string prop
Sourceval kFennIndex : string prop
Sourceval kFourCornerCode : string prop
Sourceval kFrequency : string prop
Sourceval kGB0 : string prop
Sourceval kGB1 : string prop
Sourceval kGB3 : string prop
Sourceval kGB5 : string prop
Sourceval kGB7 : string prop
Sourceval kGB8 : string prop
Sourceval kGSR : string prop
Sourceval kGradeLevel : string prop
Sourceval kHDZRadBreak : string prop
Sourceval kHKGlyph : string prop
Sourceval kHKSCS : string prop
Sourceval kHanYu : string prop
Sourceval kHangul : string prop
Sourceval kHanyuPinlu : string prop
Sourceval kHanyuPinyin : string prop
Sourceval kIBMJapan : string prop
Sourceval kIICore : string prop
Sourceval kIRGDaeJaweon : string prop
Sourceval kIRGDaiKanwaZiten : string prop
Sourceval kIRGHanyuDaZidian : string prop
Sourceval kIRGKangXi : string prop
Sourceval kIRG_GSource : string prop
Sourceval kIRG_HSource : string prop
Sourceval kIRG_JSource : string prop
Sourceval kIRG_KPSource : string prop
Sourceval kIRG_KSource : string prop
Sourceval kIRG_MSource : string prop
Sourceval kIRG_SSource : string prop
Sourceval kIRG_TSource : string prop
Sourceval kIRG_USource : string prop
Sourceval kIRG_UKSource : string prop
Sourceval kIRG_VSource : string prop
Sourceval kJHJ : string prop
Sourceval kJIS0213 : string prop
Sourceval kJa : string prop
Sourceval kJapaneseKun : string prop
Sourceval kJapaneseOn : string prop
Sourceval kJinmeiyoKanji : string prop
Sourceval kJis0 : string prop
Sourceval kJis1 : string prop
Sourceval kJoyoKanji : string prop
Sourceval kKPS0 : string prop
Sourceval kKPS1 : string prop
Sourceval kKSC0 : string prop
Sourceval kKSC1 : string prop
Sourceval kKangXi : string prop
Sourceval kKarlgren : string prop
Sourceval kKorean : string prop
Sourceval kKoreanEducationHanja : string prop
Sourceval kKoreanName : string prop
Sourceval kLau : string prop
Sourceval kMainlandTelegraph : string prop
Sourceval kMandarin : string prop
Sourceval kMatthews : string prop
Sourceval kMeyerWempe : string prop
Sourceval kMorohashi : string prop
Sourceval kNelson : string prop
Sourceval kOtherNumeric : string prop
Sourceval kPhonetic : string prop
Sourceval kPrimaryNumeric : string prop
Sourceval kPseudoGB1 : string prop
Sourceval kRSAdobe_Japan1_6 : string prop
Sourceval kRSJapanese : string prop
Sourceval kRSKanWa : string prop
Sourceval kRSKangXi : string prop
Sourceval kRSKorean : string prop
Sourceval kRSMerged : string prop
Sourceval kRSTUnicode : string prop
Sourceval kRSUnicode : string prop
Sourceval kReading : string prop
Sourceval kSBGY : string prop
Sourceval kSemanticVariant : string prop
Sourceval kSimplifiedVariant : string prop
Sourceval kSpecializedSemanticVariant : string prop
Sourceval kSpoofingVariant : string prop
Sourceval kSrc_NushuDuben : string prop
Sourceval kUnihanCore2020 : string prop
Sourceval kTGH : string prop
Sourceval kTGHZ2013 : string prop
Sourceval kTGT_MergedSrc : string prop
Sourceval kTaiwanTelegraph : string prop
Sourceval kTang : string prop
Sourceval kTotalStrokes : string prop
Sourceval kTraditionalVariant : string prop
Sourceval kVietnamese : string prop
Sourceval kWubi : string prop
Sourceval kXHC1983 : string prop
Sourceval kXerox : string prop
Sourceval kZVariant : string prop

Unicode character databases

Sourcetype block = (cp * cp) * string

The type for blocks. Code point range, name of the block.

Sourcetype named_sequence = string * cp list

The type for named sequences. Sequence name, code point sequence.

Sourcetype normalization_correction = cp * cp list * cp list * (int * int * int)

The type for normalization corrections. Code point, old normalization, new normalization, version

Sourcetype standardized_variant = cp list * string * [ `Isolate | `Initial | `Medial | `Final ] list

The type for standarized variants. Code point sequence, description, when.

Sourcetype cjk_radical = string * cp * cp

The type for CJK radicals. Radical number, CJK radical character, CJK unified ideograph.

Sourcetype emoji_source = cp list * int option * int option * int option

The type for emoji sources. Unicode, docomo, kddi, softbank.

Sourcetype t = {
  1. description : string;
  2. repertoire : props Cpmap.t;
  3. blocks : block list;
  4. named_sequences : named_sequence list;
  5. provisional_named_sequences : named_sequence list;
  6. normalization_corrections : normalization_correction list;
  7. standardized_variants : standardized_variant list;
  8. cjk_radicals : cjk_radical list;
  9. emoji_sources : emoji_source list;
}

The type for Unicode character databases.

Note. Absence of an optional top-level field in the database is denoted by the neutral element of its type (empty string, empty list, Cpmap.empty). This means that the module doesn't distinguish between absence of a field and presence of the field with empty data (but incurs no problems in this context).

Sourceval cp_prop : t -> cp -> 'a prop -> 'a option

cp_prop ucd cp p is the property p of the code point cp in db's repertoire, if p is in the repertoire and the property exists for cp.

Decode

Sourcetype src = [
  1. | `Channel of in_channel
  2. | `String of string
]

The type for input sources.

Sourcetype decoder

The type for Unicode character database decoders.

Sourceval decoder : [< src ] -> decoder

decoder src is a decoder that inputs from src.

Sourceval decode : decoder -> [ `Ok of t | `Error of string ]

decode d decodes a database from d or returns an error.

Sourceval decoded_range : decoder -> (int * int) * (int * int)

decoded_range d is the range of characters spanning the `Error decoded by d. A pair of line and column numbers respectively one and zero based.

Basics

The database and subsets of it for Unicode 13.0.0 are available here. Databases with groups should be preferred, they maximize value sharing and improve parsing performance.

A database is decoded as follows:

let ucd_or_die inf = try
  let ic = if inf = "-" then stdin else open_in inf in
  let d = Uucd.decoder (`Channel ic) in
  match Uucd.decode d with
  | `Ok db -> db
  | `Error e ->
    let (l0, c0), (l1, c1) = Uucd.decoded_range d in
    Printf.eprintf "%s:%d.%d-%d.%d: %s\n%!" inf l0 c0 l1 c1 e;
    exit 1
with Sys_error e -> Printf.eprintf "%s\n%!" e; exit 1

let ucd = ucd_or_die "/tmp/ucd.all.grouped.xml"

The convenience function cp_prop can be used to query the property of a given code point. For example the general category of U+1F42B is given by:

let u_1F42B_gc = Uucd.cp_prop ucd 0x1F42B Uucd.general_category