1 ! Copyright (C) 2005, 2009 Daniel Ehrenberg
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel namespaces xml.tokenize xml.state xml.name
4 xml.data accessors arrays make xml.char-classes fry assocs sequences
5 math xml.errors sets combinators io.encodings io.encodings.iana
6 unicode.case xml.dtd strings xml.entities unicode.categories ;
7 FROM: namespaces => set ;
10 : take-interpolated ( quot -- interpolated )
12 drop get-char CHAR: > =
14 [ "->" take-string [ blank? ] trim ]
16 ] [ call ] if ; inline
18 : interpolate-quote ( -- interpolated )
19 [ quoteless-attr ] take-interpolated ;
22 parse-name pass-blank "=" expect pass-blank
24 [ "<-" expect interpolate-quote ]
25 [ t parse-quote* ] if 2array , ;
27 : start-tag ( -- name ? )
28 #! Outputs the name and whether this is a closing tag
29 get-char CHAR: / = dup [ next ] when
33 pass-blank version-1.0? get-char name-start?
34 [ parse-attr (middle-tag) ] when ;
36 : assure-no-duplicates ( attrs-alist -- attrs-alist )
37 H{ } clone 2dup '[ swap _ push-at ] assoc-each
38 [ nip length 2 >= ] assoc-filter >alist
39 [ first first2 duplicate-attr ] unless-empty ;
41 : middle-tag ( -- attrs-alist )
42 ! f make will make a vector if it has any elements
43 [ (middle-tag) ] f make pass-blank
44 assure-no-duplicates ;
46 : end-tag ( name attrs-alist -- tag )
47 tag-ns pass-blank get-char CHAR: / =
48 [ pop-ns <contained> next ">" expect ]
49 [ depth inc <opener> close ] if ;
51 : take-comment ( -- comment )
57 : assure-no-extra ( seq -- )
59 T{ name f "" "version" f }
60 T{ name f "" "encoding" f }
61 T{ name f "" "standalone" f }
63 [ extra-attrs ] unless-empty ;
65 : good-version ( version -- version )
66 dup { "1.0" "1.1" } member? [ bad-version ] unless ;
68 : prolog-version ( alist -- version )
69 T{ name { space "" } { main "version" } } swap at
70 [ good-version ] [ versionless-prolog ] if*
73 : prolog-encoding ( alist -- encoding )
74 T{ name { space "" } { main "encoding" } } swap at
77 : yes/no>bool ( string -- t/f )
84 : prolog-standalone ( alist -- version )
85 T{ name { space "" } { main "standalone" } } swap at
86 [ yes/no>bool ] [ f ] if* ;
88 : prolog-attrs ( alist -- prolog )
94 : parse-prolog ( -- prolog )
95 pass-blank middle-tag "?>" expect
96 dup assure-no-extra prolog-attrs ;
98 : instruct ( -- instruction )
100 { [ dup "xml" = ] [ drop parse-prolog ] }
101 { [ dup >lower "xml" = ] [ capitalized-prolog ] }
102 { [ dup valid-name? not ] [ bad-name ] }
103 [ "?>" take-string append <instruction> ]
106 : take-cdata ( -- string )
107 depth get zero? [ bad-cdata ] when
108 "[CDATA[" expect "]]>" take-string ;
110 DEFER: make-tag ! Is this unavoidable?
112 : expand-pe ( -- ) ; ! Make this run the contents of the pe within a DOCTYPE
115 pass-blank get-char {
117 { CHAR: % [ expand-pe ] }
119 next make-tag dup dtd-acceptable?
120 [ bad-doctype ] unless , dtd-loop
123 [ 1string bad-doctype ]
126 : take-internal-subset ( -- dtd )
128 H{ } clone pe-table set
132 ] { } make swap extra-entities get swap <dtd> ;
134 : take-optional-id ( -- id/f )
135 get-char "SP" member?
136 [ take-external-id ] [ f ] if ;
138 : take-internal ( -- dtd/f )
140 [ next take-internal-subset ] [ f ] if ;
142 : take-doctype-decl ( -- doctype-decl )
144 pass-blank take-optional-id
145 pass-blank take-internal
146 <doctype-decl> close ;
148 : take-directive ( -- doctype )
149 take-name dup "DOCTYPE" =
150 [ drop take-doctype-decl ] [
152 [ take-inner-directive ]
153 [ misplaced-directive ] if
156 : direct ( -- object )
158 { CHAR: - [ take-comment ] }
159 { CHAR: [ [ take-cdata ] }
160 [ drop take-directive ]
163 : normal-tag ( -- tag )
165 [ dup add-ns pop-ns <closer> depth dec close ]
166 [ middle-tag end-tag ] if ;
168 : interpolate-tag ( -- interpolated )
169 [ "-" bad-name ] take-interpolated ;
171 : make-tag ( -- tag )
173 { [ get-char dup CHAR: ! = ] [ drop next direct ] }
174 { [ dup CHAR: ? = ] [ drop next instruct ] }
175 { [ dup CHAR: - = ] [ drop next interpolate-tag ] }