1 ! Copyright (C) 2009 Daniel Ehrenberg
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: sequences kernel splitting.monotonic accessors grouping wrap ;
6 TUPLE: word key width break? ;
11 : words-length ( words -- length )
14 : make-element ( whites blacks -- element )
15 [ append ] [ [ words-length ] bi@ ] 2bi <element> ;
17 : ?first2 ( seq -- first/f second/f )
18 [ ?first ] [ ?second ] bi ;
20 : split-words ( seq -- half-elements )
21 [ [ break?>> ] same? ] monotonic-split ;
23 : ?first-break ( seq -- newseq f/element )
24 dup first first break?>>
25 [ unclip-slice f swap make-element ]
28 : make-elements ( seq f/element -- elements )
29 [ 2 <groups> [ ?first2 make-element ] map ] dip
32 : words>elements ( seq -- newseq )
33 split-words ?first-break make-elements ;
37 : wrap-words ( words line-max line-ideal -- lines )
38 [ words>elements ] 2dip wrap [ concat ] map ;