su4sml/src/xmltree_parser.sml

92 lines
3.7 KiB
Standard ML

(*****************************************************************************
* su4sml --- an SML repository for managing (Secure)UML/OCL models
* http://projects.brucker.ch/su4sml/
*
* xmltree_parser.sml --- an xmi-parser for the import interface for su4sml
* 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 XmlTreeParser : sig
val readFile : string -> XmlTree.Tree
end =
struct
open XmlTree
exception FileNotFound of string
structure Parser = Parse (structure Dtd = Dtd
structure Hooks = XmlTreeHooks
structure ParserOptions = ParserOptions ()
structure Resolve = ResolveNull)
fun readFile filename =
let val currentDir = OS.FileSys.getDir()
(* how to do the following in a clean/portable way? *)
fun read_dtd dtd =
(OS.FileSys.chDir (Config.su4sml_share());
(* check to see if the DTD file exists. *)
if OS.FileSys.access (Config.umlocl_dtd,[]) then
(Parser.parseDocument
(SOME (Uri.String2Uri ("file:"^(Config.umlocl_dtd))))
(SOME dtd) (dtd,nil,nil))
else Logger.error ("Error while reading UML/OCL DTD `"^(Config.umlocl_dtd)^"': "^
"no such file or directory");
OS.FileSys.chDir currentDir)
fun read_file dtd filename =
if filename = "-"
then Parser.parseDocument
(NONE)
(SOME dtd) (dtd,nil,nil)
else let (* dummy check to see if the file exists...*)
val _ = OS.FileSys.fileSize filename
in
Parser.parseDocument
(SOME (Uri.String2Uri filename))
(SOME dtd) (dtd,nil,nil)
end
handle ex => (Logger.warn ("Error while reading file " ^filename^": "^
General.exnMessage ex);
raise ex)
val dtd = Dtd.initDtdTables()
in ( read_dtd dtd;
read_file dtd filename )
end
end