57 lines
1.3 KiB
Factor
57 lines
1.3 KiB
Factor
! Copyright (C) 2003, 2005 Slava Pestov
|
|
IN: http
|
|
USING: errors kernel lists math namespaces parser sequences
|
|
io strings ;
|
|
|
|
: header-line ( alist line -- alist )
|
|
": " split1 dup [ cons swons ] [ 2drop ] ifte ;
|
|
|
|
: (read-header) ( alist -- alist )
|
|
readln dup
|
|
empty? [ drop ] [ header-line (read-header) ] ifte ;
|
|
|
|
: read-header ( -- alist )
|
|
[ ] (read-header) ;
|
|
|
|
: url-encode ( str -- str )
|
|
[
|
|
[
|
|
dup url-quotable? [
|
|
,
|
|
] [
|
|
CHAR: % , >hex 2 CHAR: 0 pad-left %
|
|
] ifte
|
|
] each
|
|
] "" make ;
|
|
|
|
: catch-hex> ( str -- n )
|
|
#! Push f if string is not a valid hex literal.
|
|
[ hex> ] [ [ drop f ] when ] catch ;
|
|
|
|
: url-decode-hex ( index str -- )
|
|
2dup length 2 - >= [
|
|
2drop
|
|
] [
|
|
>r 1 + dup 2 + r> subseq catch-hex> [ , ] when*
|
|
] ifte ;
|
|
|
|
: url-decode-% ( index str -- index str )
|
|
2dup url-decode-hex >r 3 + r> ;
|
|
|
|
: url-decode-+-or-other ( index str ch -- index str )
|
|
dup CHAR: + = [ drop CHAR: \s ] when , >r 1 + r> ;
|
|
|
|
: url-decode-iter ( index str -- )
|
|
2dup length >= [
|
|
2drop
|
|
] [
|
|
2dup nth dup CHAR: % = [
|
|
drop url-decode-%
|
|
] [
|
|
url-decode-+-or-other
|
|
] ifte url-decode-iter
|
|
] ifte ;
|
|
|
|
: url-decode ( str -- str )
|
|
[ 0 swap url-decode-iter ] "" make ;
|