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 ;
9 : take-interpolated ( quot -- interpolated )
11 drop get-char CHAR: > =
13 [ "->" take-string [ blank? ] trim ]
15 ] [ call ] if ; inline
17 : interpolate-quote ( -- interpolated )
18 [ quoteless-attr ] take-interpolated ;
21 parse-name pass-blank "=" expect pass-blank
23 [ "<-" expect interpolate-quote ]
24 [ t parse-quote* ] if 2array , ;
26 : start-tag ( -- name ? )
27 #! Outputs the name and whether this is a closing tag
28 get-char CHAR: / = dup [ next ] when
32 pass-blank version=1.0? get-char name-start?
33 [ parse-attr (middle-tag) ] when ;
35 : assure-no-duplicates ( attrs-alist -- attrs-alist )
36 H{ } clone 2dup '[ swap _ push-at ] assoc-each
37 [ nip length 2 >= ] assoc-filter >alist
38 [ first first2 duplicate-attr ] unless-empty ;
40 : middle-tag ( -- attrs-alist )
41 ! f make will make a vector if it has any elements
42 [ (middle-tag) ] f make pass-blank
43 assure-no-duplicates ;
45 : end-tag ( name attrs-alist -- tag )
46 tag-ns pass-blank get-char CHAR: / =
47 [ pop-ns <contained> next ">" expect ]
48 [ depth inc <opener> close ] if ;
50 : take-comment ( -- comment )
56 : assure-no-extra ( seq -- )
58 T{ name f "" "version" f }
59 T{ name f "" "encoding" f }
60 T{ name f "" "standalone" f }
62 [ extra-attrs ] unless-empty ;
64 : good-version ( version -- version )
65 dup { "1.0" "1.1" } member? [ bad-version ] unless ;
67 : prolog-version ( alist -- version )
68 T{ name f "" "version" f } swap at
69 [ good-version ] [ versionless-prolog ] if* ;
71 : prolog-encoding ( alist -- encoding )
72 T{ name f "" "encoding" f } swap at "UTF-8" or ;
74 : yes/no>bool ( string -- t/f )
81 : prolog-standalone ( alist -- version )
82 T{ name f "" "standalone" f } swap at
83 [ yes/no>bool ] [ f ] if* ;
85 : prolog-attrs ( alist -- prolog )
92 : decode-input-if ( encoding -- )
93 string-input? get [ drop ] [ decode-input ] if ;
95 : parse-prolog ( -- prolog )
96 pass-blank middle-tag "?>" expect
97 dup assure-no-extra prolog-attrs
98 dup encoding>> dup "UTF-16" =
99 [ drop ] [ name>encoding [ decode-input-if ] when* ] if
100 dup prolog-data set ;
102 : instruct ( -- instruction )
104 { [ dup "xml" = ] [ drop parse-prolog ] }
105 { [ dup >lower "xml" = ] [ capitalized-prolog ] }
106 { [ dup valid-name? not ] [ bad-name ] }
107 [ "?>" take-string append <instruction> ]
110 : take-cdata ( -- string )
111 depth get zero? [ bad-cdata ] when
112 "[CDATA[" expect "]]>" take-string ;
114 DEFER: make-tag ! Is this unavoidable?
116 : expand-pe ( -- ) ; ! Make this run the contents of the pe within a DOCTYPE
119 pass-blank get-char {
121 { CHAR: % [ expand-pe ] }
123 next make-tag dup dtd-acceptable?
124 [ bad-doctype ] unless , dtd-loop
127 [ 1string bad-doctype ]
130 : take-internal-subset ( -- dtd )
132 H{ } clone pe-table set
136 ] { } make swap extra-entities get swap <dtd> ;
138 : take-optional-id ( -- id/f )
139 get-char "SP" member?
140 [ take-external-id ] [ f ] if ;
142 : take-internal ( -- dtd/f )
144 [ next take-internal-subset ] [ f ] if ;
146 : take-doctype-decl ( -- doctype-decl )
148 pass-blank take-optional-id
149 pass-blank take-internal
150 <doctype-decl> close ;
152 : take-directive ( -- doctype )
153 take-name dup "DOCTYPE" =
154 [ drop take-doctype-decl ] [
156 [ take-inner-directive ]
157 [ misplaced-directive ] if
160 : direct ( -- object )
162 { CHAR: - [ take-comment ] }
163 { CHAR: [ [ take-cdata ] }
164 [ drop take-directive ]
167 : normal-tag ( -- tag )
169 [ dup add-ns pop-ns <closer> depth dec close ]
170 [ middle-tag end-tag ] if ;
172 : interpolate-tag ( -- interpolated )
173 [ "-" bad-name ] take-interpolated ;
175 : make-tag ( -- tag )
177 { [ get-char dup CHAR: ! = ] [ drop next direct ] }
178 { [ dup CHAR: ? = ] [ drop next instruct ] }
179 { [ dup CHAR: - = ] [ drop next interpolate-tag ] }