! Copyright (C) 2008 Daniel Ehrenberg.
! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays assocs combinators fry interval-maps
-kernel literals locals math namespaces parser sequences
-simple-flat-file unicode.categories unicode.data
-unicode.normalize.private words words.constant ;
+USING: accessors arrays combinators interval-maps kernel
+literals math namespaces sequences simple-flat-file
+unicode.categories unicode.data unicode.normalize.private words ;
IN: unicode.breaks
<PRIVATE
+<<
+
+:: load-interval-file-for ( filename n key -- table )
+ filename load-data-file [ n swap nth key = ] filter
+ intern-values expand-ranges ;
+
+>>
+
+CONSTANT: emoji-modifier-table $[
+ "resource:basis/unicode/UCD/emoji/emoji-data.txt"
+ 1 "Emoji_Modifier" load-interval-file-for
+]
+
+CONSTANT: extended-pictographic-table $[
+ "resource:basis/unicode/UCD/emoji/emoji-data.txt"
+ 1 "Extended_Pictographic" load-interval-file-for
+]
+
+CONSTANT: spacing-mark-exceptions-table $[
+ {
+ 0x102B 0x102C 0x1038 { 0x1062 0x1064 } { 0x1067 0x106D }
+ 0x1083 { 0x1087 0x108C } 0x108F { 0x109A 0x109C } 0x1A61
+ 0x1A63 0x1A64 0xAA7B 0xAA7D 0x11720 0x11721
+ } <interval-set>
+]
+
! Grapheme breaks
<<
CONSTANT: Any 0
CONSTANT: LF 9
CONSTANT: SpacingMark 10
CONSTANT: Prepend 11
-CONSTANT: graphemes 12
+CONSTANT: ZWJ 12
+CONSTANT: Extended_Pictographic 13
+CONSTANT: (Extended_Pictographic-Extend*-)ZWJ 14
+CONSTANT: Regional_Indicator(even) 15
+CONSTANT: Regional_Indicator(odd) 16
+CONSTANT: graphemes 17
: jamo-class ( ch -- class )
dup initial? [ drop L ]
: hangul-class ( ch -- class )
hangul-base - 0x1C mod zero? LV LVT ? ;
+CATEGORY: extend
+ Me Mn |
+ "Other_Grapheme_Extend" property? ;
+
CATEGORY: grapheme-control Zl Zp Cc Cf ;
+
: control-class ( ch -- class )
{
- { CHAR: \r [ CR ] }
- { CHAR: \n [ LF ] }
- { 0x200C [ Extend ] }
- { 0x200D [ Extend ] }
+ { [ dup CHAR: \r = ] [ drop CR ] }
+ { [ dup CHAR: \n = ] [ drop LF ] }
+ { [ dup 0x200C = ] [ drop Extend ] }
+ { [ dup 0x200D = ] [ drop ZWJ ] }
+ { [ dup "Other_Grapheme_Extend" property? ] [ drop Extend ] }
[ drop Control ]
- } case ;
-
-CATEGORY: extend
- Me Mn |
- "Other_Grapheme_Extend" property? ;
+ } cond ;
: loe? ( ch -- ? )
"Logical_Order_Exception" property? ;
CATEGORY: spacing Mc ;
-: grapheme-class ( ch -- class )
+: regional? ( ch -- ? )
+ "Regional_Indicator" property? ;
+>>
+
+: modifier? ( ch -- ? )
+ emoji-modifier-table interval-key? ; inline
+
+:: grapheme-class ( str -- class )
+ str last
{
{ [ dup jamo? ] [ jamo-class ] }
{ [ dup hangul? ] [ hangul-class ] }
- { [ dup grapheme-control? ] [ control-class ] }
+ { [ dup grapheme-control? ] [
+ control-class dup ZWJ = [
+ drop
+ str unclip-last-slice drop dup [
+ [ extend? ]
+ [ control-class Extend = ]
+ [ modifier? ]
+ tri or or not
+ ] find-last drop [ swap ?nth ] [ last ] if*
+ extended-pictographic-table interval-key? [
+ (Extended_Pictographic-Extend*-)ZWJ
+ ] [ ZWJ ] if
+ ] when
+ ] }
{ [ dup extend? ] [ drop Extend ] }
- { [ dup spacing? ] [ drop SpacingMark ] }
- { [ loe? ] [ Prepend ] }
- [ Any ]
+ { [ dup modifier? ] [ drop Extend ] }
+ { [ dup spacing? ] [
+ spacing-mark-exceptions-table
+ interval-key? [ Any ] [ SpacingMark ] if ] }
+ { [ dup loe? ] [ drop Prepend ] }
+ { [ dup regional? ] [
+ drop
+ f :> ri-even?!
+ str unclip-last-slice drop [
+ regional? [ ri-even? not ri-even?! f ] [ t ] if
+ ] find-last 2drop
+ ri-even? [
+ Regional_Indicator(even)
+ ] [
+ Regional_Indicator(odd)
+ ] if
+ ] }
+ { [ dup extended-pictographic-table interval-key? ] [
+ drop Extended_Pictographic
+ ] }
+ [ drop Any ]
} cond ;
+<<
: init-table ( size -- table )
dup [ f <array> ] curry replicate ;
: disconnect ( class1 class2 -- ) 0 set-table ;
: make-grapheme-table ( -- )
- { CR } { LF } connect
- { Control CR LF } graphemes iota disconnect
- graphemes iota { Control CR LF } disconnect
- { L } { L V LV LVT } connect
- { LV V } { V T } connect
- { LVT T } { T } connect
- graphemes iota { Extend } connect
- graphemes iota { SpacingMark } connect
- { Prepend } graphemes iota connect ;
-
-"grapheme-table" create-word-in
-graphemes init-table table
-[ make-grapheme-table finish-table ] with-variable
-define-constant
+ { CR } { LF } connect ! GB3
+ { Control CR LF } graphemes <iota> disconnect ! GB4
+ graphemes <iota> { Control CR LF } disconnect ! GB5
+ { L } { L V LV LVT } connect ! GB6
+ { LV V } { V T } connect ! GB7
+ { LVT T } { T } connect ! GB8
+ graphemes <iota> { Extend ZWJ (Extended_Pictographic-Extend*-)ZWJ } connect ! GB9
+ graphemes <iota> { SpacingMark } connect ! GB9a
+ { Prepend } graphemes <iota> connect ! GB9b
+ { (Extended_Pictographic-Extend*-)ZWJ } { Extended_Pictographic } connect ! GB11
+ { Regional_Indicator(odd) } { Regional_Indicator(even) } connect ; ! GB12,13
>>
+CONSTANT: grapheme-table $[
+ graphemes init-table table
+ [ make-grapheme-table finish-table ] with-variable
+]
+
: grapheme-break? ( class1 class2 -- ? )
grapheme-table nth nth not ;
CONSTANT: wLF 2
CONSTANT: wNewline 3
CONSTANT: wExtend 4
-CONSTANT: wFormat 5
-CONSTANT: wKatakana 6
-CONSTANT: wALetter 7
-CONSTANT: wMidLetter 8
-CONSTANT: wMidNum 9
-CONSTANT: wMidNumLet 10
-CONSTANT: wNumeric 11
-CONSTANT: wExtendNumLet 12
-CONSTANT: unicode-words 13
-
-! Is there a way to avoid this?
-CONSTANT: word-break-classes H{
- { "Other" 0 } { "CR" 1 } { "LF" 2 } { "Newline" 3 }
- { "Extend" 4 } { "Format" 5 } { "Katakana" 6 }
- { "ALetter" 7 } { "MidLetter" 8 }
- { "MidNum" 9 } { "MidNumLet" 10 } { "Numeric" 11 }
- { "ExtendNumLet" 12 }
-}
-
-"word-break-table" create-word-in
-"vocab:unicode/data/WordBreakProperty.txt"
-load-interval-file dup array>>
-[ 2 swap [ word-break-classes at ] change-nth ] each
-define-constant
+CONSTANT: wZWJ 5
+CONSTANT: wRegional_Indicator 6
+CONSTANT: wFormat 7
+CONSTANT: wKatakana 8
+CONSTANT: wHebrew_Letter 9
+CONSTANT: wALetter 10
+CONSTANT: wSingle_Quote 11
+CONSTANT: wDouble_Quote 12
+CONSTANT: wMidNumLet 13
+CONSTANT: wMidLetter 14
+CONSTANT: wMidNum 15
+CONSTANT: wNumeric 16
+CONSTANT: wExtendNumLet 17
+CONSTANT: wWSegSpace 18
+CONSTANT: unicode-words 19
+>>
+
+<<
+CONSTANT: word-break-table $[
+ "resource:basis/unicode/UCD/auxiliary/WordBreakProperty.txt"
+ load-interval-file dup array>> [
+ 2 swap [
+ {
+ { "Other" [ wOther ] }
+ { "CR" [ wCR ] }
+ { "LF" [ wLF ] }
+ { "Newline" [ wNewline ] }
+ { "Extend" [ wExtend ] }
+ { "ZWJ" [ wZWJ ] }
+ { "Regional_Indicator" [ wRegional_Indicator ] }
+ { "Format" [ wFormat ] }
+ { "Katakana" [ wKatakana ] }
+ { "Hebrew_Letter" [ wHebrew_Letter ] }
+ { "ALetter" [ wALetter ] }
+ { "Single_Quote" [ wSingle_Quote ] }
+ { "Double_Quote" [ wDouble_Quote ] }
+ { "MidNumLet" [ wMidNumLet ] }
+ { "MidLetter" [ wMidLetter ] }
+ { "MidNum" [ wMidNum ] }
+ { "Numeric" [ wNumeric ] }
+ { "ExtendNumLet" [ wExtendNumLet ] }
+ { "WSegSpace" [ wWSegSpace ] }
+ } case
+ ] change-nth
+ ] each
+]
>>
: word-break-prop ( char -- word-break-prop )
word-break-table interval-at wOther or ;
<<
-SYMBOL: check-letter-before
-SYMBOL: check-letter-after
+SYMBOL: check-AHletter-before
+SYMBOL: check-AHletter-after
+SYMBOL: check-Hebrew-letter-before
+SYMBOL: check-Hebrew-letter-after
SYMBOL: check-number-before
SYMBOL: check-number-after
+SYMBOL: check-Extended_Pictographic
+SYMBOL: check-RI-pair
: make-word-table ( -- )
- { wCR } { wLF } connect
- { wNewline wCR wLF } unicode-words iota disconnect
- unicode-words iota { wNewline wCR wLF } disconnect
- { wALetter } { wMidLetter wMidNumLet } check-letter-after set-table
- { wMidLetter wMidNumLet } { wALetter } check-letter-before set-table
- { wNumeric wALetter } { wNumeric wALetter } connect
- { wNumeric } { wMidNum wMidNumLet } check-number-after set-table
- { wMidNum wMidNumLet } { wNumeric } check-number-before set-table
- { wKatakana } { wKatakana } connect
- { wALetter wNumeric wKatakana wExtendNumLet } { wExtendNumLet }
- [ connect ] [ swap connect ] 2bi ;
+ { wCR } { wLF } connect ! WB3
+ { wNewline ! WB3a
+ wCR
+ wLF } unicode-words <iota> disconnect
+ unicode-words <iota> { wNewline ! WB3b
+ wCR
+ wLF } disconnect
+ { wZWJ } unicode-words <iota> check-Extended_Pictographic set-table ! WB3c
+ { wWSegSpace } { wWSegSpace } connect ! WB3d
+ unicode-words <iota> { wZWJ } connect ! WB4
+ { wALetter ! WB5
+ wHebrew_Letter } { wALetter
+ wHebrew_Letter } connect
+ { wALetter ! WB6
+ wHebrew_Letter } { wMidLetter
+ wMidNumLet
+ wSingle_Quote } check-AHletter-after set-table
+ { wMidLetter ! WB7
+ wMidNumLet
+ wSingle_Quote } { wALetter
+ wHebrew_Letter } check-AHletter-before set-table
+ { wHebrew_Letter } { wSingle_Quote } connect ! WB7a
+ { wHebrew_Letter } { wDouble_Quote } check-Hebrew-letter-after set-table ! WB7b
+ { wDouble_Quote } { wHebrew_Letter } check-Hebrew-letter-before set-table ! WB7c
+ { wNumeric } { wNumeric } connect ! WB8
+ { wALetter
+ wHebrew_Letter } { wNumeric } connect ! WB9
+ { wNumeric } { wALetter ! WB10
+ wHebrew_Letter } connect
+ { wMidNum ! WB11
+ wMidNumLet
+ wSingle_Quote } { wNumeric } check-number-before set-table
+ { wNumeric } { wMidNum ! WB12
+ wMidNumLet
+ wSingle_Quote } check-number-after set-table
+ { wKatakana } { wKatakana } connect ! WB13
+ { wALetter ! WB13a
+ wHebrew_Letter
+ wNumeric
+ wKatakana
+ wExtendNumLet } { wExtendNumLet } connect
+ { wExtendNumLet } { wALetter ! WB13b
+ wHebrew_Letter
+ wNumeric
+ wKatakana } connect
+ { wRegional_Indicator } { wRegional_Indicator } check-RI-pair set-table ; ! WB15,16
: finish-word-table ( -- table )
table get [
[ { { 0 [ f ] } { 1 [ t ] } [ ] } case ] map
] map ;
+>>
-"word-table" create-word-in
-unicode-words init-table table
-[ make-word-table finish-word-table ] with-variable
-define-constant
+<<
+CONSTANT: word-table $[
+ unicode-words init-table table
+ [ make-word-table finish-word-table ] with-variable
+]
>>
: word-table-nth ( class1 class2 -- ? )
] [ t ] if ;
: (format/extended?) ( class -- ? )
- ${ wExtend wFormat } member? ; inline
+ ${ wExtend wFormat } member? ; inline ! WB4
: format/extended? ( ch -- ? )
word-break-prop (format/extended?) ;
+: (format/extended/zwj?) ( class -- ? )
+ ${ wExtend wFormat wZWJ } member? ; inline ! WB4
+
+: format/extended/zwj? ( ch -- ? )
+ word-break-prop (format/extended/zwj?) ;
+
: (walk-up) ( str i -- j )
- swap [ format/extended? not ] find-from drop ;
+ swap [ format/extended/zwj? not ] find-from drop ;
: walk-up ( str i -- j )
dupd 1 + (walk-up) [ 1 + (walk-up) ] [ drop f ] if* ;
: (walk-down) ( str i -- j )
- swap [ format/extended? not ] find-last-from drop ;
+ swap [ format/extended/zwj? not ] find-last-from drop ;
: walk-down ( str i -- j )
dupd (walk-down) [ 1 - (walk-down) ] [ drop f ] if* ;
-: word-break? ( str i table-entry -- ? )
+:: word-break? ( str i table-entry -- ? )
+ str i table-entry
{
{ t [ 2drop f ] }
{ f [ 2drop t ] }
- { check-letter-after
- [ dupd walk-up wALetter property-not= ] }
- { check-letter-before
- [ dupd walk-down wALetter property-not= ] }
+ { check-AHletter-after
+ [ dupd walk-up
+ [ wALetter property-not= ] [ wHebrew_Letter property-not= ] 2bi or ] }
+ { check-AHletter-before
+ [ dupd walk-down
+ [ wALetter property-not= ] [ wHebrew_Letter property-not= ] 2bi or ] }
+ { check-Hebrew-letter-after
+ [ dupd walk-up wHebrew_Letter property-not= ] }
+ { check-Hebrew-letter-before
+ [ dupd walk-down wHebrew_Letter property-not= ] }
{ check-number-after
- [ dupd walk-up wNumeric property-not= ] }
+ [ dupd walk-up wNumeric property-not= ] }
{ check-number-before
- [ dupd walk-down wNumeric property-not= ] }
+ [ dupd walk-down wNumeric property-not= ] }
+ { check-Extended_Pictographic
+ [ swap ?nth extended-pictographic-table interval-key? ] }
+ { check-RI-pair [
+ 2drop
+ f :> ri-even?!
+ i str [
+ regional? [ ri-even? not ri-even?! f ] [ t ] if
+ ] find-last-from 2drop
+ ri-even? not
+ ] }
} case ;
:: word-break-next ( old-class new-char i str -- next-class ? )
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