su4sml/src/xmltree_hooks.sml

109 lines
4.2 KiB
Standard ML

(*****************************************************************************
* su4sml --- an SML repository for managing (Secure)UML/OCL models
* http://projects.brucker.ch/su4sml/
*
* xmltree_hooks.sml --- hooks for the xml-parser
* This file is part of su4sml.
*
* Copyright (c) 2005-2007, ETH Zurich, Switzerland
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************)
(* $Id$ *)
structure XmlTreeHooks : Hooks =
struct
open IgnoreHooks XmlTree UniChar HookData
type AppData = Dtd.Dtd * Tree list * (Tag * Tree list) list
type AppFinal = Tree
(* val appStart = (nil,nil) *)
fun attspec2name dtd nil = nil
| attspec2name dtd ((i,AP_PRESENT (s,v,_),_)::atts) =
let val attName = UniChar.Data2String (Dtd.Index2AttNot dtd i)
val attValue = UniChar.Data2String (UniChar.Vector2Data v)
in
(attName,attValue)::(attspec2name dtd atts)
end
| attspec2name dtd ((i,AP_DEFAULT (s,v,_),_)::atts) =
let val attName = UniChar.Data2String (Dtd.Index2AttNot dtd i)
val attValue = UniChar.Vector2String v
in
(attName,attValue)::(attspec2name dtd atts)
end
| attspec2name dtd (_::atts) = attspec2name dtd atts
fun hookStartTag ((dtd,content, stack), (_,elem,atts,_,empty)) =
let val elemName = UniChar.Data2String (Dtd.Index2Element dtd elem)
val attNames = attspec2name dtd atts in
if empty
then (dtd,Node ((elemName,attNames),nil)::content,stack)
else (dtd,nil,((elemName,attNames),content)::stack)
end
fun hookEndTag ((dtd,_,nil),_) = Logger.error "in hookEndTag: illformed XML"
| hookEndTag ((dtd,content,(tag,content')::stack),_) =
(dtd,Node (tag,rev content)::content',stack)
fun hookData ((dtd,content,stack),(_,vec,_)) =
(dtd,Text (UniChar.Vector2String vec)::content,stack)
fun hookCData ((dtd,content,stack),(_,vec)) =
(dtd,Text (UniChar.Vector2String vec)::content,stack)
fun hookCharRef ((dtd,content,stack),(_,c,_)) = (* FIX *)
(dtd,content,stack)
fun hookFinish (dtd,[elem],nil) = elem
| hookFinish _ = Logger.error "in hookFinish: illformed XML"
fun print_message (pos,msg) =
TextIO.output (TextIO.stdErr, ErrorString.Position2String pos^": "^msg)
fun hookError (x as (dtd,content,stack),(pos,ErrorData.ERR_NO_DTD)) =
(Dtd.setHasDtd dtd; x)
| hookError (x,(pos,err)) =
(print_message (pos, "Error: "^
(String.concatWith " " (Errors.errorMessage err))^
"\n");
x)
fun hookWarning (x,(pos,warn)) =
(print_message (pos, "Warning: "^
(String.concatWith " " (Errors.warningMessage warn))^
"\n");
x)
end