2 Author: Francis Giraldeau <francis.giraldeau@usherbrooke.ca>
4 Reference: http://www.w3.org/TR/2006/REC-xml11-20060816/
11 (************************************************************************
13 *************************************************************************)
15 let dels (s:string) = del s s
18 let sep_spc = del /[ \t\n]+/ " "
19 let sep_osp = del /[ \t\n]*/ ""
20 let sep_eq = del /[ \t\n]*=[ \t\n]*/ "="
22 let nmtoken = /[a-zA-Z:_][a-zA-Z0-9:_.-]*/
23 let word = /[a-zA-Z][a-zA-Z0-9._-]*/
25 (* if we hide the quotes, then we can only accept single or double quotes *)
26 (* otherwise a put ambiguity is raised *)
27 let sto_dquote = dels "\"" . store /[^"]*/ . dels "\""
28 let sto_squote = dels "'" . store /[^']*/ . dels "'"
30 let comment = [ label "#comment" .
32 store /([^-]|-[^-])*/ .
35 let pi_target = nmtoken - /[Xx][Mm][Ll]/
36 let empty = Util.empty
37 let del_end = del />[\n]?/ ">\n"
38 let del_end_simple = dels ">"
40 (* This is siplified version of processing instruction
41 * pi has to not start or end with a white space and the string
42 * must not contain "?>". We restrict too much by not allowing any
45 let pi = /[^ \n\t]|[^ \n\t][^?>]*[^ \n\t]/
47 (************************************************************************
49 *************************************************************************)
52 let decl = [ label "#decl" . sep_spc .
53 store /[^> \t\n\r]|[^> \t\n\r][^>\t\n\r]*[^> \t\n\r]/ ]
55 let decl_def (r:regexp) (b:lens) = [ dels "<" . key r .
56 sep_spc . store word .
57 b . sep_osp . del_end_simple ]
59 let elem_def = decl_def /!ELEMENT/ decl
61 let enum = "(" . osp . nmtoken . ( osp . "|" . osp . nmtoken )* . osp . ")"
63 let att_type = /CDATA|ID|IDREF|IDREFS|ENTITY|ENTITIES|NMTOKEN|NMTOKENS/ |
66 let id_def = [ sep_spc . key /PUBLIC/ .
67 [ label "#literal" . sep_spc . sto_dquote ]* ] |
68 [ sep_spc . key /SYSTEM/ . sep_spc . sto_dquote ]
70 let notation_def = decl_def /!NOTATION/ id_def
72 let att_def = counter "att_id" .
73 [ sep_spc . seq "att_id" .
74 [ label "#name" . store word . sep_spc ] .
75 [ label "#type" . store att_type . sep_spc ] .
76 ([ key /#REQUIRED|#IMPLIED/ ] |
77 [ label "#FIXED" . del /#FIXED[ \n\t]*|/ "" . sto_dquote ]) ]*
79 let att_list_def = decl_def /!ATTLIST/ att_def
81 let entity_def = decl_def /!ENTITY/ ([sep_spc . label "#decl" . sto_dquote ])
83 let decl_def_item = elem_def | entity_def | att_list_def | notation_def
85 let decl_outer = sep_osp . del /\[[ \n\t\r]*/ "[\n" .
86 (decl_def_item . sep_osp )* . dels "]"
88 (* let dtd_def = [ sep_spc . key "SYSTEM" . sep_spc . sto_dquote ] *)
90 let doctype = decl_def /!DOCTYPE/ (decl_outer|id_def)
92 let attributes = [ label "#attribute" .
93 [ sep_spc . key nmtoken . sep_eq . sto_dquote ]+ ]
95 let prolog = [ label "#declaration" .
102 (************************************************************************
104 *************************************************************************)
106 (* we consider entities as simple text *)
107 let text_re = /[^<]+/ - /([^<]*\]\]>[^<]*)/
108 let text = [ label "#text" . store text_re ]
109 let cdata = [ label "#CDATA" . dels "<![CDATA[" .
110 store (char* - (char* . "]]>" . char*)) . dels "]]>" ]
112 let element (body:lens) =
113 let h = attributes? . sep_osp . dels ">" . body* . dels "</" in
114 [ dels "<" . square nmtoken h . sep_osp . del_end ]
116 let empty_element = [ dels "<" . key nmtoken . value "#empty" .
117 attributes? . sep_osp . del /\/>[\n]?/ "/>\n" ]
119 let pi_instruction = [ dels "<?" . label "#pi" .
120 [ label "#target" . store pi_target ] .
121 [ sep_spc . label "#instruction" . store pi ]? .
122 sep_osp . del /\?>/ "?>" ]
124 (* Typecheck is weaker on rec lens, detected by unfolding *)
126 let content1 = element text
127 let rec content2 = element (content1|text|comment)
130 let rec content = element (text|comment|content|empty_element|pi_instruction)
132 (* Constraints are weaker here, but it's better than being too strict *)
133 let doc = (sep_osp . (prolog | comment | doctype | pi_instruction))* .
134 ((sep_osp . content) | (sep_osp . empty_element)) .
135 (sep_osp . (comment | pi_instruction ))* . sep_osp
139 let filter = (incl "/etc/xml/*.xml")
140 . (incl "/etc/xml/catalog")
143 let xfm = transform lns filter