1 ! Copyright (C) 2005, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: arrays kernel make math sequences sets strings ;
8 : ?chomp ( seq begin tester chopper -- newseq ? )
9 [ [ 2dup ] dip call ] dip
10 [ [ length ] dip call t ] curry
11 [ drop f ] if ; inline
15 : ?head ( seq begin -- newseq ? )
16 [ head? ] [ tail ] ?chomp ;
18 : ?head-slice ( seq begin -- newseq ? )
19 [ head? ] [ tail-slice ] ?chomp ;
21 : ?tail ( seq end -- newseq ? )
22 [ tail? ] [ head* ] ?chomp ;
24 : ?tail-slice ( seq end -- newseq ? )
25 [ tail? ] [ head-slice* ] ?chomp ;
29 : (split1) ( seq subseq quot -- before after )
32 [ drop length ] [ start dup ] 2bi
33 [ [ nip ] [ + ] 2bi t ]
37 ] dip [ 2nip f ] if ; inline
41 : split1 ( seq subseq -- before after )
44 : split1-slice ( seq subseq -- before-slice after-slice )
45 [ snip-slice ] (split1) ;
47 : split-subseq ( seq subseq -- seqs )
51 [ dup ] swap [ split1-slice swap ] curry produce nip
54 : split1-when ( ... seq quot: ( ... elt -- ... ? ) -- ... before after )
55 dupd find drop [ swap [ dup 1 + ] dip snip ] [ f ] if* ; inline
57 : split1-last ( seq subseq -- before after )
58 [ <reversed> ] bi@ split1 [ reverse ] bi@
61 : split1-last-slice ( seq subseq -- before-slice after-slice )
62 [ <reversed> ] bi@ split1-slice [ <reversed> ] bi@
63 [ f ] [ swap ] if-empty ;
65 : replace ( seq old new -- new-seq )
66 pick [ [ split-subseq ] dip ] dip join-as ;
70 : (split) ( n seq quot: ( ... elt -- ... ? ) -- )
72 [ [ [ 3dup swapd subseq , ] dip [ drop 1 + ] 2dip (split) ] 3curry ]
73 [ drop [ swap [ tail ] unless-zero , ] 2curry ]
74 3tri if* ; inline recursive
76 : split, ( ... seq quot: ( ... elt -- ... ? ) -- ... ) [ 0 ] 2dip (split) ; inline
80 : split ( seq separators -- pieces )
81 [ [ member? ] curry split, ] { } make ; inline
83 : split-when ( ... seq quot: ( ... elt -- ... ? ) -- ... pieces )
84 [ split, ] { } make ; inline
88 : (split*) ( n seq quot: ( ... elt -- ... ? ) -- )
90 [ [ [ 1 + ] 3dip [ 3dup swapd subseq , ] dip [ drop ] 2dip (split*) ] 3curry ]
91 [ drop [ [ drop ] 2dip 2dup length < [ swap [ tail ] unless-zero , ] [ 2drop ] if ] 2curry ]
92 3tri if ; inline recursive
94 : split*, ( ... seq quot: ( ... elt -- ... ? ) -- ... ) [ 0 ] 2dip (split*) ; inline
98 : split* ( seq separators -- pieces )
99 [ [ member? ] curry split*, ] { } make ; inline
101 : split*-when ( ... seq quot: ( ... elt -- ... ? ) -- ... pieces )
102 [ split*, ] { } make ; inline
104 GENERIC: string-lines ( str -- seq )
106 M: string string-lines
107 dup [ "\r\n" member? ] any? [
111 dup ?last CHAR: \r = [ but-last ] when
112 [ CHAR: \r = ] split-when
116 [ [ CHAR: \r = ] split-when ] change-nth