1 // Created on: 2001-07-20
2 // Created by: Alexander GRIGORIEV
3 // Copyright (c) 2001-2014 OPEN CASCADE SAS
4 //
5 // This file is part of Open CASCADE Technology software library.
6 //
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
12 //
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
15 
16 //AGV 060302: Input from std::istream
17 //            AGV 130302: bug corr: was error if strlen(root_elem_name) < 7
18 
19 #ifndef LDOM_XmlReader_HeaderFile
20 #define LDOM_XmlReader_HeaderFile
21 
22 //#define XML_BUFFER_SIZE 1000
23 #define XML_BUFFER_SIZE 20480
24 
25 #include <LDOM_BasicElement.hxx>
26 #include <LDOM_OSStream.hxx>
27 
28 class TCollection_AsciiString;
29 
30 //  Class LDOM_XmlReader
31 //
32 
33 class LDOM_XmlReader
34 {
35  public:
36   enum RecordType {
37     XML_UNKNOWN,
38     XML_HEADER,
39     XML_DOCTYPE,
40     XML_COMMENT,
41     XML_START_ELEMENT,
42     XML_END_ELEMENT,
43     XML_FULL_ELEMENT,
44     XML_TEXT,
45     XML_CDATA,
46     XML_EOF
47   };
48 
49   // ---------- PUBLIC METHODS ----------
50   LDOM_XmlReader (const Handle(LDOM_MemManager)& aDocument,
51                   TCollection_AsciiString& anErrorString,
52                   const Standard_Boolean theTagPerStep = Standard_False);
53   // Constructor - takes a file descriptor for input
54   // Constructor - takes an std::istream for input
55 
56   RecordType ReadRecord (Standard_IStream& theIStream,
57                          LDOM_OSStream& theData,
58                          Standard_Boolean& theDocStart);
59   // reading a markup or other element of XML format
60 
GetElement() const61   LDOM_BasicElement& GetElement() const { return * myElement; }
62   // get the last element retrieved from the stream
63 
64   void CreateElement (const char *theName, const Standard_Integer theLen);
65 
66   static Standard_Boolean getInteger (LDOMBasicString&       theValue,
67                                       const char             * theStart,
68                                       const char             * theEnd);
69   // try convert string theStart to LDOM_AsciiInteger, return False on success
70 
71   // Returns the byte order mask defined at the start of a stream
GetBOM() const72   LDOM_OSStream::BOMType GetBOM() const { return myBOM; }
73 
74  private:
75   // ---------- PRIVATE (PROHIBITED) METHODS ----------
76   LDOM_XmlReader (const LDOM_XmlReader& theOther);
77   // Copy constructor
78 
79   LDOM_XmlReader& operator = (const LDOM_XmlReader& theOther);
80   // Assignment
81 
82  private:
83   // ---------- PRIVATE FIELDS ----------
84 
85   Standard_Boolean              myEOF;
86   TCollection_AsciiString       & myError;
87   Handle(LDOM_MemManager)       myDocument;
88   LDOM_BasicElement             * myElement;
89   const LDOM_BasicNode          * myLastChild;  // optim. reading attributes
90   const char                    * myPtr;
91   const char                    * myEndPtr;
92   char                          myBuffer [XML_BUFFER_SIZE+4];
93   Standard_Boolean              myTagPerStep;
94   LDOM_OSStream::BOMType        myBOM;
95 };
96 
97 #endif
98