1 ! Copyright (C) 2005, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: arrays kernel math sbufs sequences sequences.private
9 : ?chomp ( seq begin tester chopper -- newseq ? )
10 [ [ 2dup ] dip call ] dip
11 [ [ length ] dip call t ] curry
12 [ drop f ] if ; inline
16 : ?head ( seq begin -- newseq ? )
17 [ head? ] [ tail ] ?chomp ;
19 : ?head-slice ( seq begin -- newseq ? )
20 [ head? ] [ tail-slice ] ?chomp ;
22 : ?tail ( seq end -- newseq ? )
23 [ tail? ] [ head* ] ?chomp ;
25 : ?tail-slice ( seq end -- newseq ? )
26 [ tail? ] [ head-slice* ] ?chomp ;
30 : (split1) ( seq subseq snip-quot -- before after )
33 [ drop length ] [ start dup ] 2bi
34 [ [ nip ] [ + ] 2bi t ]
38 ] dip [ 2nip f ] if ; inline
42 : split1 ( seq subseq -- before after )
45 : split1-slice ( seq subseq -- before-slice after-slice )
46 [ snip-slice ] (split1) ;
48 : split-subseq ( seq subseq -- seqs )
52 [ dup ] swap [ split1-slice swap ] curry produce nip
55 : replace ( seq old new -- new-seq )
56 pick [ [ split-subseq ] dip ] dip join-as ;
60 : (split1-when) ( ... seq quot: ( ... elt -- ... ? ) snip-quot -- ... before-slice after-slice )
61 [ dupd find drop ] dip [ swap [ dup 1 + ] dip ] prepose [ f ] if* ; inline
65 : split1-when ( ... seq quot: ( ... elt -- ... ? ) -- ... before after )
66 [ snip ] (split1-when) ; inline
68 : split1-when-slice ( ... seq quot: ( ... elt -- ... ? ) -- ... before-slice after-slice )
69 [ snip-slice ] (split1-when) ; inline
71 : split1-last ( seq subseq -- before after )
72 [ <reversed> ] bi@ split1 [ reverse ] bi@
75 : split1-last-slice ( seq subseq -- before-slice after-slice )
76 [ <reversed> ] bi@ split1-slice [ <reversed> ] bi@
77 [ f ] [ swap ] if-empty ;
81 : (split) ( seq quot: ( ... elt -- ... ? ) slice-quot -- pieces )
83 swap curry [ keep 1 + swap ] curry [
84 [ find-from drop dup ] 2curry [ keep -rot ] curry
88 ] dip 2curry call suffix ; inline
92 : split-when ( ... seq quot: ( ... elt -- ... ? ) -- ... pieces )
93 [ subseq-unsafe ] (split) ; inline
95 : split-when-slice ( ... seq quot: ( ... elt -- ... ? ) -- ... pieces )
96 [ <slice-unsafe> ] (split) ; inline
98 : split ( seq separators -- pieces )
99 [ member? ] curry split-when ; inline
101 : split-slice ( seq separators -- pieces )
102 [ member? ] curry split-when-slice ; inline
104 : split-indices ( seq indices -- pieces )
105 over length suffix 0 swap [
106 [ pick subseq ] keep swap
109 : string-lines ( seq -- seq' )
110 [ V{ } clone 0 ] dip [ 2dup bounds-check? ] [
111 2dup [ "\r\n" member? ] find-from swapd [
112 over [ [ nip length ] keep ] unless
113 [ "" subseq-as suffix! ] 2keep [ 1 + ] dip
115 2dup ?nth CHAR: \n eq? [ [ 1 + ] dip ] when
117 ] while 2drop { } like ;