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#region Copyright
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#endregion
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using System;
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using System.Text;
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using System.Collections;
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namespace Seasar.Framework.Xml
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{
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public sealed class TagHandlerContext
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{
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private StringBuilder body_ = null;
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private StringBuilder characters_ = new StringBuilder();
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private Stack bodyStack_ = new Stack();
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private StringBuilder path_ = new StringBuilder();
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private StringBuilder detailPath_ = new StringBuilder();
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private string qName_ = "";
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private Stack qNameStack_ = new Stack();
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private object result_;
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private Stack stack_ = new Stack();
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private Hashtable pathCounts_ = new Hashtable();
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private Hashtable parameters_ = new Hashtable();
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public TagHandlerContext()
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{
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}
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public void Push(object obj)
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{
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if(stack_.Count == 0) result_ = obj;
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stack_.Push(obj);
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}
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public object Result
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{
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get { return result_; }
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}
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public object Pop()
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{
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return stack_.Pop();
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}
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public object Peek()
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{
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return stack_.Peek();
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}
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public object Peek(int n)
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{
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IEnumerator enu = stack_.GetEnumerator();
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int index = stack_.Count - n - 1;
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int i = 0;
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while(enu.MoveNext())
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{
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if(index == i++) return enu.Current;
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}
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return null;
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}
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public object Peek(Type type)
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{
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IEnumerator enu = stack_.GetEnumerator();
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while(enu.MoveNext())
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{
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object o = enu.Current;
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if(type.IsInstanceOfType(o)) return o;
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}
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return null;
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}
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public object GetParameter(string name)
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{
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return parameters_[name];
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}
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public void AddParameter(string name,object parameter)
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{
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parameters_[name] = parameter;
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}
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public void StartElement(string qName)
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{
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bodyStack_.Push(body_);
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body_ = new StringBuilder();
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characters_ = new StringBuilder();
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qNameStack_.Push(qName_);
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qName_ = qName;
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path_.Append("/");
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path_.Append(qName);
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int pathCount = this.IncrementPathCount();
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detailPath_.Append("/");
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detailPath_.Append(qName);
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detailPath_.Append("[");
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detailPath_.Append(pathCount);
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detailPath_.Append("]");
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}
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public string Characters
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{
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get { return characters_.ToString().Trim(); }
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set
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{
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body_.Append(value);
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characters_.Append(value);
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}
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}
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public string Body
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{
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get { return body_.ToString().Trim(); }
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}
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public bool IsCharactersEol
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{
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get
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{
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if(characters_.Length == 0) return false;
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return characters_[characters_.Length - 1] == '\n';
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}
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}
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public void ClearCharacters()
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{
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characters_ = new StringBuilder();
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}
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public void EndElement()
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{
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body_ = (StringBuilder) bodyStack_.Pop();
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RemoveLastPath(path_);
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RemoveLastPath(detailPath_);
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qName_ = (string) qNameStack_.Pop();
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}
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private static void RemoveLastPath(StringBuilder path)
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{
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int last = path.ToString().LastIndexOf("/");
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path.Remove(last,path.Length - last);
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}
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public string Path
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{
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get { return path_.ToString(); }
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}
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public string DetailPath
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{
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get { return detailPath_.ToString(); }
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}
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public string QName
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{
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get { return qName_; }
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}
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private int IncrementPathCount()
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{
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string path = this.Path;
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int pathCount = 0;
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if(pathCounts_[path] != null)
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{
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pathCount = (int) pathCounts_[path];
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}
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pathCount++;
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pathCounts_[path] = pathCount;
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return pathCount;
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}
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}
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}
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