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//-----------------------------------------------------------------------
// <copyright file="DictionaryXmlWriter.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOAuth.Messaging {
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
/// <summary>
/// An XmlWriter-looking object that actually saves data to a dictionary.
/// </summary>
internal class DictionaryXmlWriter {
/// <summary>
/// Creates an <see cref="XmlWriter"/> that actually writes to an IDictionary<string, string> instance.
/// </summary>
/// <param name="dictionary">The dictionary to save the written XML to.</param>
/// <returns>The XmlWriter that will save data to the given dictionary.</returns>
internal static XmlWriter Create(IDictionary<string, string> dictionary) {
return new PseudoXmlWriter(dictionary);
}
/// <summary>
/// Writes out a dictionary as if it were XML.
/// </summary>
private class PseudoXmlWriter : XmlWriter {
/// <summary>
/// The dictionary to write values to.
/// </summary>
private IDictionary<string, string> dictionary;
/// <summary>
/// The key being written at the moment.
/// </summary>
private string key;
/// <summary>
/// The value being written out at the moment.
/// </summary>
private StringBuilder value = new StringBuilder();
/// <summary>
/// Initializes a new instance of the <see cref="PseudoXmlWriter"/> class.
/// </summary>
/// <param name="dictionary">The dictionary that will be written to.</param>
internal PseudoXmlWriter(IDictionary<string, string> dictionary) {
if (dictionary == null) {
throw new ArgumentNullException("dictionary");
}
this.dictionary = dictionary;
}
/// <summary>
/// Gets the spoofed state of the <see cref="XmlWriter"/>.
/// </summary>
public override WriteState WriteState {
get { return WriteState.Element; }
}
/// <summary>
/// Prepares to write out a new key/value pair with the given key name to the dictionary.
/// </summary>
/// <param name="prefix">This parameter is ignored.</param>
/// <param name="localName">The key to store in the dictionary.</param>
/// <param name="ns">This parameter is ignored.</param>
public override void WriteStartElement(string prefix, string localName, string ns) {
this.key = localName;
this.value.Length = 0;
}
/// <summary>
/// Appends some text to the value that is to be stored in the dictionary.
/// </summary>
/// <param name="text">The text to append to the value.</param>
public override void WriteString(string text) {
if (!string.IsNullOrEmpty(this.key)) {
this.value.Append(text);
}
}
/// <summary>
/// Writes out a completed key/value to the dictionary.
/// </summary>
public override void WriteEndElement() {
if (this.key != null) {
this.dictionary[this.key] = this.value.ToString();
this.key = null;
this.value.Length = 0;
}
}
/// <summary>
/// Clears the internal key/value building state.
/// </summary>
/// <param name="prefix">This parameter is ignored.</param>
/// <param name="localName">This parameter is ignored.</param>
/// <param name="ns">This parameter is ignored.</param>
public override void WriteStartAttribute(string prefix, string localName, string ns) {
this.key = null;
}
/// <summary>
/// This method does not do anything.
/// </summary>
public override void WriteEndAttribute() { }
/// <summary>
/// This method does not do anything.
/// </summary>
public override void Close() { }
#region Unimplemented methods
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
public override void Flush() {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="ns">This parameter is ignored.</param>
/// <returns>None, since an exception is always thrown.</returns>
public override string LookupPrefix(string ns) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="buffer">This parameter is ignored.</param>
/// <param name="index">This parameter is ignored.</param>
/// <param name="count">This parameter is ignored.</param>
public override void WriteBase64(byte[] buffer, int index, int count) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="text">This parameter is ignored.</param>
public override void WriteCData(string text) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="ch">This parameter is ignored.</param>
public override void WriteCharEntity(char ch) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="buffer">This parameter is ignored.</param>
/// <param name="index">This parameter is ignored.</param>
/// <param name="count">This parameter is ignored.</param>
public override void WriteChars(char[] buffer, int index, int count) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="text">This parameter is ignored.</param>
public override void WriteComment(string text) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="name">This parameter is ignored.</param>
/// <param name="pubid">This parameter is ignored.</param>
/// <param name="sysid">This parameter is ignored.</param>
/// <param name="subset">This parameter is ignored.</param>
public override void WriteDocType(string name, string pubid, string sysid, string subset) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
public override void WriteEndDocument() {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="name">This parameter is ignored.</param>
public override void WriteEntityRef(string name) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
public override void WriteFullEndElement() {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="name">This parameter is ignored.</param>
/// <param name="text">This parameter is ignored.</param>
public override void WriteProcessingInstruction(string name, string text) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="data">This parameter is ignored.</param>
public override void WriteRaw(string data) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="buffer">This parameter is ignored.</param>
/// <param name="index">This parameter is ignored.</param>
/// <param name="count">This parameter is ignored.</param>
public override void WriteRaw(char[] buffer, int index, int count) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="standalone">This parameter is ignored.</param>
public override void WriteStartDocument(bool standalone) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
public override void WriteStartDocument() {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="lowChar">This parameter is ignored.</param>
/// <param name="highChar">This parameter is ignored.</param>
public override void WriteSurrogateCharEntity(char lowChar, char highChar) {
throw new NotImplementedException();
}
/// <summary>
/// Throws <see cref="NotImplementedException"/>.
/// </summary>
/// <param name="ws">This parameter is ignored.</param>
public override void WriteWhitespace(string ws) {
throw new NotImplementedException();
}
#endregion
}
}
}
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