USING: assocs html.parser kernel math sequences strings ascii
arrays generalizations shuffle unicode.case namespaces make
splitting http accessors io combinators http.client urls
fry sequences.lib ;
IN: html.parser.analyzer
TUPLE: link attributes clickable ;
: scrape-html ( url -- vector )
http-get nip parse-html ;
: find-all ( seq quot -- alist )
[ >alist ] [ '[ second @ ] ] bi* filter ; inline
: find-nth ( seq quot n -- i elt )
[ >alist ] 2dip -rot
'[ _ [ second @ ] find-from rot drop swap 1+ ]
[ f 0 ] 2dip times drop first2 ; inline
: find-first-name ( str vector -- i/f tag/f )
[ >lower ] dip [ name>> = ] with find ; inline
: find-matching-close ( str vector -- i/f tag/f )
[ >lower ] dip
[ [ name>> = ] [ closing?>> ] bi and ] with find ; inline
: find-between* ( i/f tag/f vector -- vector )
pick integer? [
rot tail-slice
>r name>> r>
[ find-matching-close drop dup [ 1+ ] when ] keep
swap [ head ] [ first ] if*
] [
3drop V{ } clone
] if ; inline
: find-between ( i/f tag/f vector -- vector )
find-between* dup length 3 >= [
[ rest-slice but-last-slice ] keep like
] when ; inline
: find-between-first ( string vector -- vector' )
[ find-first-name ] keep find-between ; inline
: find-between-all ( vector quot -- seq )
[ [ [ closing?>> not ] bi and ] curry find-all ] curry
[ [ >r first2 r> find-between* ] curry map ] bi ; inline
: remove-blank-text ( vector -- vector' )
[
dup name>> text =
[ text>> [ blank? ] all? not ] [ drop t ] if
] filter ;
: trim-text ( vector -- vector' )
[
dup name>> text =
[ [ [ blank? ] trim ] change-text ] when
] map ;
: find-by-id ( id vector -- vector )
[ attributes>> "id" swap at = ] with filter ;
: find-by-class ( id vector -- vector )
[ attributes>> "class" swap at = ] with filter ;
: find-by-name ( str vector -- vector )
[ >lower ] dip [ name>> = ] with filter ;
: find-by-attribute-key ( key vector -- vector )
[ >lower ] dip
[ attributes>> at ] with filter
sift ;
: find-by-attribute-key-value ( value key vector -- vector )
[ >lower ] dip
[ attributes>> at over = ] with filter nip
sift ;
: find-first-attribute-key-value ( value key vector -- i/f tag/f )
[ >lower ] dip
[ attributes>> at over = ] with find rot drop ;
: tag-link ( tag -- link/f )
attributes>> [ "href" swap at ] [ f ] if* ;
: find-links ( vector -- vector' )
[ [ name>> "a" = ] [ attributes>> "href" swap at ] bi and ]
find-between-all ;
: ( vector -- link )
[ first attributes>> ]
[ [ name>> { text "img" } member? ] filter ] bi
link boa ;
: link. ( vector -- )
[ attributes>> "href" swap at write nl ]
[ clickable>> [ bl bl text>> print ] each nl ] bi ;
: find-by-text ( seq quot -- tag )
[ dup name>> text = ] prepose find drop ;
: find-opening-tags-by-name ( name seq -- seq )
[ [ name>> = ] [ closing?>> not ] bi and ] with find-all ;
: href-contains? ( str tag -- ? )
attributes>> "href" swap at* [ subseq? ] [ 2drop f ] if ;
: find-hrefs ( vector -- vector' )
find-links
[ [
[ name>> "a" = ]
[ attributes>> "href" swap key? ] bi and ] filter
] map sift [ [ attributes>> "href" swap at ] map ] map concat ;
: find-forms ( vector -- vector' )
"form" over find-opening-tags-by-name
swap [ >r first2 r> find-between* ] curry map
[ [ name>> { "form" "input" } member? ] filter ] map ;
: find-html-objects ( string vector -- vector' )
[ find-opening-tags-by-name ] keep
[ [ first2 ] dip find-between* ] curry map ;
: form-action ( vector -- string )
[ name>> "form" = ] find nip
attributes>> "action" swap at ;
: hidden-form-values ( vector -- strings )
[ attributes>> "type" swap at "hidden" = ] filter ;
: input. ( tag -- )
dup name>> print
attributes>>
[ bl bl bl bl [ write "=" write ] [ write bl ] bi* nl ] assoc-each ;
: form. ( vector -- )
[ closing?>> not ] filter
[
{
{ [ dup name>> "form" = ]
[ "form action: " write attributes>> "action" swap at print ] }
{ [ dup name>> "input" = ] [ input. ] }
[ drop ]
} cond
] each ;
: query>assoc* ( str -- hash )
"?" split1 nip query>assoc ;