-! Copyright (C) 2008 Daniel Ehrenberg.\r
-! See http://factorcode.org/license.txt for BSD license.\r
-USING: sequences io.files io.encodings.ascii kernel values splitting\r
-accessors math.parser ascii io assocs strings math namespaces make\r
-sorting combinators math.order arrays unicode.normalize unicode.data\r
-locals macros sequences.deep words unicode.breaks quotations\r
-combinators.short-circuit simple-flat-file ;\r
-IN: unicode.collation\r
-\r
-<PRIVATE\r
-VALUE: ducet\r
-\r
-TUPLE: weight primary secondary tertiary ignorable? ;\r
-\r
-: parse-weight ( string -- weight )\r
- "]" split but-last [\r
- weight new swap rest unclip CHAR: * = swapd >>ignorable?\r
- swap "." split first3 [ hex> ] tri@\r
- [ >>primary ] [ >>secondary ] [ >>tertiary ] tri*\r
- ] map ;\r
-\r
-: parse-keys ( string -- chars )\r
- " " split [ hex> ] "" map-as ;\r
-\r
-: parse-ducet ( file -- ducet )\r
- data [ [ parse-keys ] [ parse-weight ] bi* ] H{ } assoc-map-as ;\r
-\r
-"vocab:unicode/collation/allkeys.txt" parse-ducet to: ducet\r
-\r
-! Fix up table for long contractions\r
-: help-one ( assoc key -- )\r
- ! Need to be more general? Not for DUCET, apparently\r
- 2 head 2dup swap key? [ 2drop ] [\r
- [ [ 1string swap at ] with { } map-as concat ]\r
- [ swap set-at ] 2bi\r
- ] if ;\r
-\r
-: insert-helpers ( assoc -- )\r
- dup keys [ length 3 >= ] filter\r
- [ help-one ] with each ;\r
-\r
-ducet insert-helpers\r
-\r
-: base ( char -- base )\r
- {\r
- { [ dup HEX: 3400 HEX: 4DB5 between? ] [ drop HEX: FB80 ] } ! Extension A\r
- { [ dup HEX: 20000 HEX: 2A6D6 between? ] [ drop HEX: FB80 ] } ! Extension B\r
- { [ dup HEX: 4E00 HEX: 9FC3 between? ] [ drop HEX: FB40 ] } ! CJK\r
- [ drop HEX: FBC0 ] ! Other\r
- } cond ;\r
-\r
-: AAAA ( char -- weight )\r
- [ base ] [ -15 shift ] bi + HEX: 20 2 f weight boa ;\r
-\r
-: BBBB ( char -- weight )\r
- HEX: 7FFF bitand HEX: 8000 bitor 0 0 f weight boa ;\r
-\r
-: illegal? ( char -- ? )\r
- { [ "Noncharacter_Code_Point" property? ] [ category "Cs" = ] } 1|| ;\r
-\r
-: derive-weight ( char -- weights )\r
- first dup illegal?\r
- [ drop { } ]\r
- [ [ AAAA ] [ BBBB ] bi 2array ] if ;\r
-\r
-: building-last ( -- char )\r
- building get empty? [ 0 ] [ building get last last ] if ;\r
-\r
-: blocked? ( char -- ? )\r
- combining-class dup { 0 f } member?\r
- [ drop building-last non-starter? ]\r
- [ building-last combining-class = ] if ;\r
-\r
-: possible-bases ( -- slice-of-building )\r
- building get dup [ first non-starter? not ] find-last\r
- drop [ 0 ] unless* tail-slice ;\r
-\r
-:: ?combine ( char slice i -- ? )\r
- i slice nth char suffix :> str\r
- str ducet key? dup\r
- [ str i slice set-nth ] when ;\r
-\r
-: add ( char -- )\r
- dup blocked? [ 1string , ] [\r
- dup possible-bases dup length\r
- [ ?combine ] with with any?\r
- [ drop ] [ 1string , ] if\r
- ] if ;\r
-\r
-: string>graphemes ( string -- graphemes )\r
- [ [ add ] each ] { } make ;\r
-\r
-: graphemes>weights ( graphemes -- weights )\r
- [\r
- dup weight? [ 1array ] ! From tailoring\r
- [ dup ducet at [ ] [ derive-weight ] ?if ] if\r
- ] { } map-as concat ;\r
-\r
-: append-weights ( weights quot -- )\r
- [ [ ignorable?>> not ] filter ] dip\r
- map [ zero? not ] filter % 0 , ; inline\r
-\r
-: variable-weight ( weight -- )\r
- dup ignorable?>> [ primary>> ] [ drop HEX: FFFF ] if , ;\r
-\r
-: weights>bytes ( weights -- byte-array )\r
- [\r
- {\r
- [ [ primary>> ] append-weights ]\r
- [ [ secondary>> ] append-weights ]\r
- [ [ tertiary>> ] append-weights ]\r
- [ [ variable-weight ] each ]\r
- } cleave\r
- ] { } make ;\r
-PRIVATE>\r
-\r
-: completely-ignorable? ( weight -- ? )\r
- [ primary>> ] [ secondary>> ] [ tertiary>> ] tri\r
- [ zero? ] tri@ and and ;\r
-\r
-: filter-ignorable ( weights -- weights' )\r
- f swap [\r
- [ nip ] [ primary>> zero? and ] 2bi\r
- [ swap ignorable?>> or ]\r
- [ swap completely-ignorable? or not ] 2bi\r
- ] filter nip ;\r
-\r
-: collation-key ( string -- key )\r
- nfd string>graphemes graphemes>weights\r
- filter-ignorable weights>bytes ;\r
-\r
-<PRIVATE\r
-: insensitive= ( str1 str2 levels-removed -- ? )\r
- [\r
- [ collation-key ] dip\r
- [ [ 0 = not ] trim-tail but-last ] times\r
- ] curry bi@ = ;\r
-PRIVATE>\r
-\r
-: primary= ( str1 str2 -- ? )\r
- 3 insensitive= ;\r
-\r
-: secondary= ( str1 str2 -- ? )\r
- 2 insensitive= ;\r
-\r
-: tertiary= ( str1 str2 -- ? )\r
- 1 insensitive= ;\r
-\r
-: quaternary= ( str1 str2 -- ? )\r
- 0 insensitive= ;\r
-\r
-<PRIVATE\r
-: w/collation-key ( str -- {str,key} )\r
- [ collation-key ] keep 2array ;\r
-PRIVATE>\r
-\r
-: sort-strings ( strings -- sorted )\r
- [ w/collation-key ] map natural-sort values ;\r
-\r
-: string<=> ( str1 str2 -- <=> )\r
- [ w/collation-key ] compare ;\r
+! Copyright (C) 2008 Daniel Ehrenberg.
+! See http://factorcode.org/license.txt for BSD license.
+USING: accessors arrays assocs combinators
+combinators.short-circuit combinators.smart fry kernel make
+math math.order math.parser namespaces sequences
+simple-flat-file splitting strings unicode.data ;
+IN: unicode.collation
+
+<PRIVATE
+
+SYMBOL: ducet
+
+TUPLE: weight-levels primary secondary tertiary ignorable? ;
+: <weight-levels> ( primary secondary tertiary -- weight-levels> )
+ weight-levels new
+ swap >>tertiary
+ swap >>secondary
+ swap >>primary ; inline
+
+: parse-weight ( string -- weight )
+ "]" split but-last [
+ weight-levels new swap rest unclip CHAR: * = swapd >>ignorable?
+ swap "." split first3 [ hex> ] tri@
+ [ >>primary ] [ >>secondary ] [ >>tertiary ] tri*
+ ] map ;
+
+: parse-keys ( string -- chars )
+ split-words [ hex> ] "" map-as ;
+
+: parse-ducet ( file -- ducet )
+ load-data-file [ [ parse-keys ] [ parse-weight ] bi* ] H{ } assoc-map-as ;
+
+"vocab:unicode/UCA/allkeys.txt" parse-ducet ducet set-global
+
+! https://www.unicode.org/reports/tr10/tr10-41.html#Well_Formed_DUCET
+! WF5 - Well-formedness 5 condition:
+! https://www.unicode.org/reports/tr10/tr10-41.html#WF5
+! { "0CC6" "0CC2" "0CD5" } ! 0CD5 is not a non-starter, don't add 2-gram "0CC6" "0CC2"to ducet
+! { "0DD9" "0DCF" "0DCA" } ! already in allkeys.txt file
+! { "0FB2" "0F71" "0F80" } ! added below
+! { "0FB3" "0F71" "0F80" } ! added below
+! This breaks the unicode tests that ship in CollationTest_SHIFTED.txt
+! but it's supposedly more correct.
+: fixup-ducet-for-tibetan ( -- )
+ {
+ {
+ { 0x0FB2 0x0F71 } ! CE(0FB2) CE(0F71)
+ {
+ T{ weight-levels
+ { primary 12719 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12741 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB3 0x0F71 } ! CE(0FB3) CE(0F71)
+ {
+ T{ weight-levels
+ { primary 12722 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12741 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+
+ {
+ { 0x0FB2 0x0F71 0x0F72 } ! CE(0FB2) CE(0F71 0F72)
+ {
+ T{ weight-levels
+ { primary 12719 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12743 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB2 0x0F73 } ! CE(0FB2) CE(0F71 0F72)
+ {
+ T{ weight-levels
+ { primary 12719 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12743 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB2 0x0F71 0x0F74 } ! CE(0FB2) CE(0F71 0F74)
+ {
+ T{ weight-levels
+ { primary 12719 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12747 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB2 0x0F75 } ! CE(0FB2) CE(0F71 0F74)
+ {
+ T{ weight-levels
+ { primary 12719 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12747 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB3 0x0F71 0x0F72 } ! CE(0FB3) CE(0F71 0F72)
+ {
+ T{ weight-levels
+ { primary 12722 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12743 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB3 0x0F73 } ! CE(0FB3) CE(0F71 0F72)
+ {
+ T{ weight-levels
+ { primary 12722 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12743 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB3 0x0F71 0x0F74 } ! CE(0FB3) CE(0F71 0F74)
+ {
+ T{ weight-levels
+ { primary 12722 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12747 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ {
+ { 0x0FB3 0x0F75 } ! CE(0FB3) CE(0F71 0F74)
+ {
+ T{ weight-levels
+ { primary 12722 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ T{ weight-levels
+ { primary 12747 }
+ { secondary 32 }
+ { tertiary 2 }
+ }
+ }
+ }
+ } ducet get-global '[ swap >string _ set-at ] assoc-each ;
+
+! These values actually break the collation unit tests in CollationTest_SHIFTED.txt
+! So we disable those tests in favor of supposedly better collation for Tibetan.
+! https://www.unicode.org/reports/tr10/tr10-41.html#Well_Formed_DUCET
+
+fixup-ducet-for-tibetan
+
+: tangut-block? ( char -- ? )
+ {
+ [ 0x17000 0x18AFF between? ] ! Tangut and Tangut Components
+ [ 0x18D00 0x18D8F between? ] ! Tangut Supplement
+ } 1|| ; inline
+
+: nushu-block? ( char -- ? )
+ 0x1b170 0x1B2FF between? ; inline
+
+: khitan-block? ( char -- ? )
+ 0x18b00 0x18cff between? ; inline
+
+! https://wiki.computercraft.cc/Module:Unicode_data
+! Unicode TR10 - Computing Implicit Weights
+: base ( char -- base )
+ {
+ { [ dup 0x03400 0x04DBF between? ] [ drop 0xFB80 ] } ! Extension A
+ { [ dup 0x20000 0x2A6DF between? ] [ drop 0xFB80 ] } ! Extension B
+ { [ dup 0x2A700 0x2B739 between? ] [ drop 0xFB80 ] } ! Extension C
+ { [ dup 0x2B740 0x2B81D between? ] [ drop 0xFB80 ] } ! Extension D
+ { [ dup 0x2B820 0x2CEA1 between? ] [ drop 0xFB80 ] } ! Extension E
+ { [ dup 0x2CEB0 0x2EBE0 between? ] [ drop 0xFB80 ] } ! Extension F
+ { [ dup 0x30000 0x3134A between? ] [ drop 0xFB80 ] } ! Extension G
+ { [ dup 0x31350 0x323AF between? ] [ drop 0xFB80 ] } ! Extension H
+ { [ dup 0x2F800 0x2FA1D between? ] [ drop 0xFB80 ] } ! CJK Compatibility
+ { [ dup 0x04E00 0x09FFF between? ] [ drop 0xFB40 ] } ! CJK
+ { [ dup 0x0F900 0x0FAD9 between? ] [ drop 0xFB40 ] } ! CJK
+ [ drop 0xFBC0 ] ! Other
+ } cond ;
+
+: tangut-AAAA ( char -- weight-levels )
+ drop 0xfb00 0x0020 0x0002 <weight-levels> ; inline
+
+: tangut-BBBB ( char -- weight-levels )
+ 0x17000 - 0x8000 bitor 0 0 <weight-levels> ; inline
+
+: nushu-AAAA ( char -- weight-levels )
+ drop 0xfb01 0x0020 0x0002 <weight-levels> ; inline
+
+: nushu-BBBB ( char -- weight-levels )
+ 0x1B170 - 0x8000 bitor 0 0 <weight-levels> ; inline
+
+: khitan-AAAA ( char -- weight-levels )
+ drop 0xfb02 0x0020 0x0002 <weight-levels> ; inline
+
+: khitan-BBBB ( char -- weight-levels )
+ 0x18b00 - 0x8000 bitor 0 0 <weight-levels> ; inline
+
+: AAAA ( char -- weight-levels )
+ [ base ] [ -15 shift ] bi + 0x0020 0x0002 <weight-levels> ; inline
+
+: BBBB ( char -- weight-levels )
+ 0x7FFF bitand 0x8000 bitor 0 0 <weight-levels> ; inline
+
+: derive-weight ( 1string -- weight-levels-pair )
+ first
+ {
+ { [ dup tangut-block? ] [ [ tangut-AAAA ] [ tangut-BBBB ] bi 2array ] }
+ { [ dup nushu-block? ] [ [ nushu-AAAA ] [ nushu-BBBB ] bi 2array ] }
+ { [ dup khitan-block? ] [ [ khitan-AAAA ] [ khitan-BBBB ] bi 2array ] }
+ [ [ AAAA ] [ BBBB ] bi 2array ]
+ } cond ;
+
+: building-last ( -- char )
+ building get [ 0 ] [ last last ] if-empty ;
+
+! https://www.unicode.org/reports/tr10/tr10-41.html#Collation_Graphemes
+: blocked? ( char -- ? )
+ combining-class dup { 0 f } member?
+ [ drop building-last non-starter? ]
+ [ building-last combining-class = ] if ;
+
+: possible-bases ( -- slice-of-building )
+ building get dup [ first non-starter? not ] find-last
+ drop [ 0 ] unless* tail-slice ;
+
+:: ?combine ( char slice i -- ? )
+ i slice nth char suffix :> str
+ str ducet get-global key? dup
+ [ str i slice set-nth ] when ;
+
+: add ( char -- )
+ dup blocked? [ 1string , ] [
+ dup possible-bases dup length <iota>
+ [ ?combine ] 2with any?
+ [ drop ] [ 1string , ] if
+ ] if ;
+
+: string>graphemes ( string -- graphemes )
+ [ [ add ] each ] { } make ;
+
+: char>weight-levels ( 1string -- weight-levels )
+ ducet get-global ?at [ derive-weight ] unless ; inline
+
+: graphemes>weights ( graphemes -- weights )
+ [
+ dup weight-levels?
+ [ 1array ] ! From tailoring
+ [ char>weight-levels ] if
+ ] { } map-as concat ;
+
+: append-weights ( weight-levels quot -- seq )
+ [ [ ignorable?>> ] reject ] dip
+ map [ zero? ] reject ; inline
+
+: variable-weight ( weight-levels -- obj )
+ dup ignorable?>> [ primary>> ] [ drop 0xFFFF ] if ;
+
+: weights>bytes ( weights -- array )
+ [
+ {
+ [ [ primary>> ] append-weights { 0 } ]
+ [ [ secondary>> ] append-weights { 0 } ]
+ [ [ tertiary>> ] append-weights { 0 } ]
+ [ [ [ secondary>> ] [ tertiary>> ] bi [ zero? ] both? ] reject [ variable-weight ] map ]
+ } cleave
+ ] { } append-outputs-as ;
+
+PRIVATE>
+
+: completely-ignorable? ( weight -- ? )
+ {
+ [ primary>> zero? ]
+ [ secondary>> zero? ]
+ [ tertiary>> zero? ]
+ } 1&& ;
+
+: filter-ignorable ( weights -- weights' )
+ f swap [
+ [ nip ] [ primary>> zero? and ] 2bi
+ [ swap ignorable?>> or ]
+ [ swap completely-ignorable? or not ] 2bi
+ ] filter nip ;
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