factor/extra/html/parser/utils/utils.factor

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Factor

! Copyright (C) 2008 Doug Coleman.
! See http://factorcode.org/license.txt for BSD license.
USING: assocs circular combinators continuations hashtables
hashtables.private io kernel math namespaces prettyprint
quotations sequences splitting state-parser strings ;
IN: html.parser.utils
: string-parse-end? ( -- ? ) get-next not ;
: take-string* ( match -- string )
dup length <circular-string>
[ 2dup string-matches? ] take-until nip
dup length rot length 1- - head next* ;
: trim1 ( seq ch -- newseq )
[ ?head drop ] [ ?tail drop ] bi ;
: single-quote ( str -- newstr )
"'" swap "'" 3append ;
: double-quote ( str -- newstr )
"\"" swap "\"" 3append ;
: quote ( str -- newstr )
CHAR: ' over member?
[ double-quote ] [ single-quote ] if ;
: quoted? ( str -- ? )
[ f ]
[ [ first ] [ peek ] bi [ = ] keep "'\"" member? and ] if-empty ;
: ?quote ( str -- newstr )
dup quoted? [ quote ] unless ;
: unquote ( str -- newstr )
dup quoted? [ but-last-slice rest-slice >string ] when ;
: quote? ( ch -- ? ) "'\"" member? ;