101 lines
2.6 KiB
C#
101 lines
2.6 KiB
C#
// HtmlAgilityPack V1.0 - Simon Mourier <simon underscore mourier at hotmail dot com>
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using System;
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using System.Collections;
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namespace HtmlAgilityPack
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{
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internal class NameValuePairList
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{
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#region Fields
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internal readonly string Text;
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private ArrayList _allPairs;
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private Hashtable _pairsWithName;
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#endregion
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#region Constructors
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internal NameValuePairList() :
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this(null)
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{
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}
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internal NameValuePairList(string text)
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{
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Text = text;
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_allPairs = new ArrayList();
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_pairsWithName = new Hashtable();
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Parse(text);
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}
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#endregion
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#region Internal Methods
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internal static string GetNameValuePairsValue(string text, string name)
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{
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NameValuePairList l = new NameValuePairList(text);
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return l.GetNameValuePairValue(name);
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}
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internal ArrayList GetNameValuePairs(string name)
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{
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if (name == null)
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return _allPairs;
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return _pairsWithName[name] as ArrayList;
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}
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internal string GetNameValuePairValue(string name)
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{
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if (name == null)
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throw new ArgumentNullException();
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ArrayList al = GetNameValuePairs(name);
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if (al == null)
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return null;
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// return first item
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NameValuePair nvp = al[0] as NameValuePair;
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return nvp != null ? nvp.Value : string.Empty;
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}
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#endregion
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#region Private Methods
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private void Parse(string text)
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{
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_allPairs.Clear();
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_pairsWithName.Clear();
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if (text == null)
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return;
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string[] p = text.Split(';');
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foreach (string pv in p)
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{
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if (pv.Length == 0)
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continue;
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string[] onep = pv.Split(new char[] {'='}, 2);
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if (onep.Length==0)
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continue;
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NameValuePair nvp = new NameValuePair(onep[0].Trim().ToLower());
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nvp.Value = onep.Length < 2 ? "" : onep[1];
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_allPairs.Add(nvp);
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// index by name
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ArrayList al = _pairsWithName[nvp.Name] as ArrayList;
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if (al == null)
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{
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al = new ArrayList();
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_pairsWithName[nvp.Name] = al;
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}
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al.Add(nvp);
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}
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}
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#endregion
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}
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} |