2 // SubtreeXmlReader.cs - reads descendant nodes in XmlReader
\r
5 // Atsushi Enomoto <atsushi@ximian.com>
\r
7 // Copyright (c) 2004 Novell Inc. All rights reserved
\r
9 // Permission is hereby granted, free of charge, to any person obtaining
\r
10 // a copy of this software and associated documentation files (the
\r
11 // "Software"), to deal in the Software without restriction, including
\r
12 // without limitation the rights to use, copy, modify, merge, publish,
\r
13 // distribute, sublicense, and/or sell copies of the Software, and to
\r
14 // permit persons to whom the Software is furnished to do so, subject to
\r
15 // the following conditions:
\r
17 // The above copyright notice and this permission notice shall be
\r
18 // included in all copies or substantial portions of the Software.
\r
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
\r
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
\r
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
\r
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
\r
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
\r
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
\r
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\r
32 using System.Collections;
\r
34 using System.Xml.Schema;
\r
38 internal class SubtreeXmlReader : XmlReader, IXmlLineInfo, IXmlNamespaceResolver
\r
46 IXmlNamespaceResolver nsResolver;
\r
48 public SubtreeXmlReader (XmlReader reader)
\r
50 this.Reader = reader;
\r
51 li = reader as IXmlLineInfo;
\r
52 nsResolver = reader as IXmlNamespaceResolver;
\r
54 startDepth = reader.Depth;
\r
55 if (reader.ReadState == ReadState.Initial)
\r
56 startDepth = -1; // end == the reader's end
\r
59 public override int AttributeCount {
\r
60 get { return initial ? 0 : Reader.AttributeCount; }
\r
64 public override bool CanReadBinaryContent {
\r
65 get { return Reader.CanReadBinaryContent; }
\r
68 public override bool CanReadValueChunk {
\r
69 get { return Reader.CanReadValueChunk; }
\r
73 public override int Depth {
\r
74 get { return Reader.Depth - startDepth; }
\r
77 public override string BaseURI {
\r
78 get { return Reader.BaseURI; }
\r
81 public override bool EOF {
\r
82 get { return eof || Reader.EOF; }
\r
85 public int LineNumber {
\r
86 get { return initial ? 0 : li != null ? li.LineNumber : 0; }
\r
89 public int LinePosition {
\r
90 get { return initial ? 0 : li != null ? li.LinePosition : 0; }
\r
93 public override bool HasValue {
\r
94 get { return initial ? false : Reader.HasValue; }
\r
97 public override string LocalName {
\r
98 get { return initial ? String.Empty : Reader.LocalName; }
\r
101 public override string Name {
\r
102 get { return initial ? String.Empty : Reader.Name; }
\r
105 public override XmlNameTable NameTable {
\r
106 get { return Reader.NameTable; }
\r
109 public override string NamespaceURI {
\r
110 get { return initial ? String.Empty : Reader.NamespaceURI; }
\r
113 public override XmlNodeType NodeType {
\r
114 get { return initial ? XmlNodeType.None : Reader.NodeType; }
\r
117 public override string Prefix {
\r
118 get { return initial ? String.Empty : Reader.Prefix; }
\r
121 public override ReadState ReadState {
\r
122 get { return initial ? ReadState.Initial : eof ? ReadState.EndOfFile : Reader.ReadState ; }
\r
125 public override IXmlSchemaInfo SchemaInfo {
\r
126 get { return Reader.SchemaInfo; }
\r
129 public override XmlReaderSettings Settings {
\r
130 get { return Reader.Settings; }
\r
133 public override string Value {
\r
134 get { return initial ? String.Empty : Reader.Value; }
\r
137 public override void Close ()
\r
142 public override string GetAttribute (int i)
\r
144 return initial ? null : Reader.GetAttribute (i);
\r
147 public override string GetAttribute (string name)
\r
149 return initial ? null : Reader.GetAttribute (name);
\r
152 public override string GetAttribute (string local, string ns)
\r
154 return initial ? null : Reader.GetAttribute (local, ns);
\r
157 IDictionary IXmlNamespaceResolver.GetNamespacesInScope (XmlNamespaceScope scope)
\r
159 return nsResolver != null ? nsResolver.GetNamespacesInScope (scope) : new Hashtable ();
\r
162 public bool HasLineInfo ()
\r
164 return li != null ? li.HasLineInfo () : false;
\r
167 public override string LookupNamespace (string prefix)
\r
169 return Reader.LookupNamespace (prefix);
\r
172 string IXmlNamespaceResolver.LookupPrefix (string ns)
\r
174 return nsResolver != null ? nsResolver.LookupPrefix (ns) : String.Empty;
\r
177 string IXmlNamespaceResolver.LookupPrefix (string ns, bool atomizedNames)
\r
179 return nsResolver != null ? nsResolver.LookupPrefix (ns, atomizedNames) : String.Empty;
\r
182 public override bool MoveToFirstAttribute ()
\r
184 return initial ? false : Reader.MoveToFirstAttribute ();
\r
187 public override bool MoveToNextAttribute ()
\r
189 return initial ? false : Reader.MoveToNextAttribute ();
\r
192 public override void MoveToAttribute (int i)
\r
195 Reader.MoveToAttribute (i);
\r
198 public override bool MoveToAttribute (string name)
\r
200 return initial ? false : Reader.MoveToAttribute (name);
\r
203 public override bool MoveToAttribute (string local, string ns)
\r
205 return initial ? false : Reader.MoveToAttribute (local, ns);
\r
208 public override bool MoveToElement ()
\r
210 return initial ? false : Reader.MoveToElement ();
\r
213 public override bool Read ()
\r
221 return !Reader.IsEmptyElement && Reader.Read ();
\r
223 if (Reader.Depth > startDepth)
\r
224 if (Reader.Read ())
\r
230 public override bool ReadAttributeValue ()
\r
232 if (initial || eof)
\r
234 return Reader.ReadAttributeValue ();
\r
237 public override void ResolveEntity ()
\r
239 if (initial || eof)
\r
241 Reader.ResolveEntity ();
\r