1 ! Copyright (C) 2008, 2009 Daniel Ehrenberg.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: arrays ascii assocs byte-arrays combinators
4 combinators.short-circuit grouping hashtables interval-sets
5 io.encodings.utf8 io.files kernel locals make math math.bitwise
6 math.order math.parser math.ranges memoize namespaces sequences
7 sets simple-flat-file sorting splitting strings.parser ;
8 QUALIFIED: interval-sets
13 CONSTANT: simple-lower H{ }
14 CONSTANT: simple-upper H{ }
15 CONSTANT: simple-title H{ }
16 CONSTANT: canonical-map H{ }
17 CONSTANT: combine-map H{ }
18 CONSTANT: class-map H{ }
19 CONSTANT: compatibility-map H{ }
20 CONSTANT: category-map BV{ }
21 CONSTANT: special-casing H{ }
22 CONSTANT: properties H{ }
24 : >2ch ( a b -- c ) [ 21 shift ] dip + ;
25 : 2ch> ( c -- a b ) [ -21 shift ] [ 21 on-bits mask ] bi ;
29 CONSTANT: name-map H{ }
31 : canonical-entry ( char -- seq ) canonical-map at ; inline
32 : combine-chars ( a b -- char/f ) >2ch combine-map at ; inline
33 : compatibility-entry ( char -- seq ) compatibility-map at ; inline
34 : combining-class ( char -- n ) class-map at ; inline
35 : non-starter? ( char -- ? ) combining-class { 0 f } member? not ; inline
36 : name>char ( name -- char ) name-map at ; inline
37 : char>name ( char -- name ) name-map value-at ; inline
38 : property ( property -- interval-map ) properties at ; foldable
39 : property? ( char property -- ? ) property interval-sets:in? ; inline
40 : ch>lower ( ch -- lower ) simple-lower ?at drop ; inline
41 : ch>upper ( ch -- upper ) simple-upper ?at drop ; inline
42 : ch>title ( ch -- title ) simple-title ?at drop ; inline
43 : special-case ( ch -- casing-tuple ) special-casing at ; inline
45 ! For non-existent characters, use Cn
46 CONSTANT: categories {
48 "Lu" "Ll" "Lt" "Lm" "Lo"
51 "Pc" "Pd" "Ps" "Pe" "Pi" "Pf" "Po"
59 MEMO: categories-map ( -- hashtable )
60 categories <enum> [ swap ] H{ } assoc-map-as ;
62 CONSTANT: num-chars 0x2FA1E
66 : category# ( char -- n )
67 ! There are a few characters that should be Cn
68 ! that this gives Cf or Mn
69 ! Cf = 26; Mn = 5; Cn = 29
70 ! Use a compressed array instead?
71 dup category-map ?nth [ ] [
72 dup 0xE0001 0xE007F between?
74 0xE0100 0xE01EF between? 5 29 ?
78 : category ( char -- category )
79 category# categories nth ;
83 ! Loading data from UnicodeData.txt
85 : load-data ( -- data )
86 "vocab:unicode/data/UnicodeData.txt" data ;
88 : (process-data) ( index data -- newdata )
89 [ [ nth ] keep first swap ] with { } map>assoc
90 [ [ hex> ] dip ] assoc-map ;
92 : process-data ( index data -- hash )
93 (process-data) [ hex> ] assoc-map [ nip ] H{ } assoc-filter-as ;
95 : (chain-decomposed) ( hash value -- newvalue )
98 [ (chain-decomposed) ] [ 1array nip ] ?if
101 : chain-decomposed ( hash -- newhash )
102 dup [ swap (chain-decomposed) ] curry assoc-map ;
104 : first* ( seq -- ? )
105 second { [ empty? ] [ first ] } 1|| ;
107 : (process-decomposed) ( data -- alist )
108 5 swap (process-data)
109 [ " " split [ hex> ] map ] assoc-map ;
111 : exclusions-file ( -- filename )
112 "vocab:unicode/data/CompositionExclusions.txt" ;
114 : exclusions ( -- set )
115 exclusions-file utf8 file-lines
116 [ "#" split1 drop [ blank? ] trim-tail hex> ] map
119 : remove-exclusions ( alist -- alist )
120 exclusions unique assoc-diff ;
122 : process-canonical ( data -- hash hash )
123 (process-decomposed) [ first* ] filter
125 [ second length 2 = ] filter remove-exclusions
126 [ first2 >2ch swap ] H{ } assoc-map-as
127 ] [ >hashtable chain-decomposed ] bi ;
129 : process-compatibility ( data -- hash )
131 [ dup first* [ first2 rest 2array ] unless ] map
132 [ second empty? not ] filter
133 >hashtable chain-decomposed ;
135 : process-combining ( data -- hash )
136 3 swap (process-data)
137 [ string>number ] assoc-map
138 [ nip zero? not ] assoc-filter
141 ! the maximum unicode char in the first 3 planes
143 :: fill-ranges ( table -- table )
144 name-map sort-values keys
145 [ { [ "first>" tail? ] [ "last>" tail? ] } 1|| ] filter
147 [ name>char ] bi@ [ [a,b] ] [ table ?nth ] bi
148 [ swap table ?set-nth ] curry each
151 :: process-category ( data -- category-listing )
152 num-chars <byte-array> :> table
153 2 data (process-data) [| char cat |
154 cat categories-map at char table ?set-nth
155 ] assoc-each table fill-ranges ;
157 : process-names ( data -- names-hash )
158 1 swap (process-data) [
159 >lower H{ { CHAR: \s CHAR: - } } substitute swap
160 ] H{ } assoc-map-as ;
162 : multihex ( hexstring -- string )
163 " " split [ hex> ] map sift ;
167 TUPLE: code-point lower title upper ;
169 C: <code-point> code-point
173 : set-code-point ( seq -- )
174 4 head [ multihex ] map first4
175 <code-point> swap first ,, ;
178 : parse-properties ( -- {{[a,b],prop}} )
179 "vocab:unicode/data/PropList.txt" data [
181 ".." split1 [ dup ] unless*
186 : properties>intervals ( properties -- assoc[str,interval] )
187 dup values members [ f ] H{ } map>assoc
188 [ [ push-at ] curry assoc-each ] keep
189 [ <interval-set> ] assoc-map ;
191 : load-properties ( -- assoc )
192 parse-properties properties>intervals ;
194 ! Special casing data
195 : load-special-casing ( -- special-casing )
196 "vocab:unicode/data/SpecialCasing.txt" data
197 [ length 5 = ] filter
198 [ [ set-code-point ] each ] H{ } make ;
201 [ process-names name-map swap assoc-union! drop ]
202 [ 13 swap process-data simple-lower swap assoc-union! drop ]
203 [ 12 swap process-data simple-upper swap assoc-union! drop ]
204 [ 14 swap process-data simple-upper assoc-union simple-title swap assoc-union! drop ]
205 [ process-combining class-map swap assoc-union! drop ]
206 [ process-canonical canonical-map swap assoc-union! drop combine-map swap assoc-union! drop ]
207 [ process-compatibility compatibility-map swap assoc-union! drop ]
208 [ process-category category-map push-all ]
211 combine-map keys [ 2ch> nip ] map
212 [ combining-class not ] filter
213 [ 0 swap class-map set-at ] each
215 load-special-casing special-casing swap assoc-union! drop
217 load-properties properties swap assoc-union! drop
219 [ name>char [ "Invalid character" throw ] unless* ]
220 name>char-hook set-global