//
// Mono.Xml.XmlFilterReader.cs
//
// Author:
//	Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (c) 2004 Novell Inc. All rights reserved
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

//
// Similar to SAX DefaultHandler
//

#if NET_2_0
using System;
using System.Collections.Generic;
using System.Xml;
using System.Xml.Schema;

namespace Mono.Xml
{
	internal class XmlFilterReader : XmlReader, IXmlLineInfo, IXmlNamespaceResolver
	{
		XmlReader reader;
		XmlReaderSettings settings;
		IXmlLineInfo lineInfo;

		public XmlFilterReader (XmlReader reader, XmlReaderSettings settings)
		{
			this.reader = reader;
			this.settings = settings.Clone ();
			this.lineInfo = reader as IXmlLineInfo;
		}

		#region Properties

#if NET_2_0
		public override bool CanReadBinaryContent {
			get { return reader.CanReadBinaryContent; }
		}

		public override bool CanReadValueChunk {
			get { return reader.CanReadValueChunk; }
		}
#endif

		// This is the only one non-overriden property.
		public XmlReader Reader {
			get { return reader; }
		}

		public int LineNumber {
			get { return lineInfo != null ? lineInfo.LineNumber : 0; }
		}
		
		public int LinePosition {
			get { return lineInfo != null ? lineInfo.LinePosition : 0; }
		}
		
		public override XmlNodeType NodeType 
		{
			get { return reader.NodeType; }
		}

		public override string Name {
			get { return reader.Name; }
		}

		public override string LocalName {
			get { return reader.LocalName; }
		}

		public override string NamespaceURI {
			get { return reader.NamespaceURI; }
		}

		public override string Prefix {
			get { return reader.Prefix; }
		}

		public override bool HasValue {
			get { return reader.HasValue; }
		}

		public override int Depth {
			get { return reader.Depth; }
		}

		public override string Value {
			get { return reader.Value; }
		}

		public override string BaseURI {
			get { return reader.BaseURI; }
		}

		public override bool IsEmptyElement {
			get { return reader.IsEmptyElement; }
		}

		public override bool IsDefault {
			get { return reader.IsDefault; }
		}

		public override char QuoteChar {
			get { return reader.QuoteChar; }
		}

		public override string XmlLang {
			get { return reader.XmlLang; }
		}

		public override XmlSpace XmlSpace {
			get { return reader.XmlSpace; }
		}

		public override int AttributeCount {
			get { return reader.AttributeCount; }
		}

		public override string this [int i] {
			get { return reader [i]; }
		}

		public override string this [string name] {
			get { return reader [name]; }
		}

		public override string this [string localName, string namespaceURI] {
			get { return reader [localName, namespaceURI]; }
		}

		public override bool EOF {
			get { return reader.EOF; }
		}

		public override ReadState ReadState {
			get { return reader.ReadState; }
		}

		public override XmlNameTable NameTable {
			get { return reader.NameTable; }
		}

#if !NET_2_1
		public override IXmlSchemaInfo SchemaInfo {
			get { return reader.SchemaInfo; }
		}
#endif

		public override XmlReaderSettings Settings {
			get { return settings; }
		}
		#endregion

		#region Methods

		public override string GetAttribute (string name)
		{
			return reader.GetAttribute (name);
		}

		public override string GetAttribute (string localName, string namespaceURI)
		{
			return reader.GetAttribute (localName, namespaceURI);
		}

		public override string GetAttribute (int i)
		{
			return reader.GetAttribute (i);
		}

		public bool HasLineInfo ()
		{
			return lineInfo != null ? lineInfo.HasLineInfo () : false;
		}

		public override bool MoveToAttribute (string name)
		{
			return reader.MoveToAttribute (name);
		}

		public override bool MoveToAttribute (string localName, string namespaceURI)
		{
			return reader.MoveToAttribute (localName, namespaceURI);
		}

		public override void MoveToAttribute (int i)
		{
			reader.MoveToAttribute (i);
		}

		public override bool MoveToFirstAttribute ()
		{
			return reader.MoveToFirstAttribute ();
		}

		public override bool MoveToNextAttribute ()
		{
			return reader.MoveToNextAttribute ();
		}

		public override bool MoveToElement ()
		{
			return reader.MoveToElement ();
		}

		public override void Close ()
		{
			if (settings.CloseInput)
				reader.Close ();
		}

		public override bool Read ()
		{
			if (!reader.Read ())
				return false;

			if (reader.NodeType == XmlNodeType.DocumentType && settings.ProhibitDtd)
				throw new XmlException ("Document Type Definition (DTD) is prohibited in this XML reader.");

			if (reader.NodeType == XmlNodeType.Whitespace &&
				settings.IgnoreWhitespace)
					return Read ();
			if (reader.NodeType == XmlNodeType.ProcessingInstruction &&
				settings.IgnoreProcessingInstructions)
					return Read ();
			if (reader.NodeType == XmlNodeType.Comment &&
				settings.IgnoreComments)
					return Read ();

			return true;
		}

		public override string ReadString ()
		{
			return reader.ReadString ();
		}

		public override string LookupNamespace (string prefix)
		{
			return reader.LookupNamespace (prefix);
		}

		public override void ResolveEntity ()
		{
			reader.ResolveEntity ();
		}

		public override bool ReadAttributeValue () {
			return reader.ReadAttributeValue ();
		}

		string IXmlNamespaceResolver.LookupPrefix (string ns)
		{
			return ((IXmlNamespaceResolver) reader).LookupPrefix (ns);
		}

		IDictionary<string, string> IXmlNamespaceResolver.GetNamespacesInScope (XmlNamespaceScope scope)
		{
			return ((IXmlNamespaceResolver) reader).GetNamespacesInScope (scope);
		}

		#endregion
	}
}

#endif