mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/Header.cs

   1 // HtmlAgilityPack V1.0 - Simon Mourier <simonm@microsoft.com>
   2 using System;
   3 using System.Collections;
   4
   5 namespace HtmlAgilityPack
   6 {
   7         internal class NameValuePair
   8         {
   9                 internal readonly string Name;
  10                 internal string Value;
  11
  12                 internal NameValuePair()
  13                 {
  14                 }
  15
  16                 internal NameValuePair(string name):
  17                         this()
  18                 {
  19                         Name = name;
  20                 }
  21
  22                 internal NameValuePair(string name, string value):
  23                         this(name)
  24                 {
  25                         Value = value;
  26                 }
  27         }
  28
  29         internal class NameValuePairList
  30         {
  31                 internal readonly string Text;
  32                 private ArrayList _allPairs;
  33                 private Hashtable _pairsWithName;
  34
  35                 internal NameValuePairList():
  36                         this(null)
  37                 {
  38                 }
  39
  40                 internal NameValuePairList(string text)
  41                 {
  42                         Text = text;
  43                         _allPairs = new ArrayList();
  44                         _pairsWithName = new Hashtable();
  45
  46                         Parse(text);
  47                 }
  48
  49                 internal string GetNameValuePairValue(string name)
  50                 {
  51                         if (name==null)
  52                                 throw new ArgumentNullException();
  53                         ArrayList al = GetNameValuePairs(name);
  54                         if (al==null)
  55                                 return null;
  56
  57                         // return first item
  58                         NameValuePair nvp = al[0] as NameValuePair;
  59                         return nvp.Value;
  60                 }
  61
  62                 internal ArrayList GetNameValuePairs(string name)
  63                 {
  64                         if (name==null)
  65                                 return _allPairs;
  66                         return _pairsWithName[name] as ArrayList;
  67                 }
  68
  69                 private void Parse(string text)
  70                 {
  71                         _allPairs.Clear();
  72                         _pairsWithName.Clear();
  73                         if (text==null)
  74                                 return;
  75
  76                         string[] p = text.Split(';');
  77                         if (p==null)
  78                                 return;
  79                         foreach(string pv in p)
  80                         {
  81                                 if (pv.Length==0)
  82                                         continue;
  83                                 string[] onep = pv.Split(new char[]{'='}, 2);
  84                                 if (onep==null)
  85                                         continue;
  86                                 NameValuePair nvp = new NameValuePair(onep[0].Trim().ToLower());
  87                                 if (onep.Length<2)
  88                                         nvp.Value = "";
  89                                 else
  90                                         nvp.Value = onep[1];
  91
  92                                 _allPairs.Add(nvp);
  93
  94                                 // index by name
  95                                 ArrayList al = _pairsWithName[nvp.Name] as ArrayList;
  96                                 if (al==null)
  97                                 {
  98                                         al = new ArrayList();
  99                                         _pairsWithName[nvp.Name] = al;
 100                                 }
 101                                 al.Add(nvp);
 102                         }
 103                 }
 104
 105                 internal static string GetNameValuePairsValue(string text, string name)
 106                 {
 107                         NameValuePairList l = new NameValuePairList(text);
 108                         return l.GetNameValuePairValue(name);
 109                 }
 110         }
 111 }