mcs/class/System.Web/System.Web/HttpValueCollection.cs

   1 //
   2 // System.Web.HttpValueCollection
   3 //
   4 // Author:
   5 //      Patrik Torstensson (Patrik.Torstensson@labs2.com)
   6 //      Gonzalo Paniagua (gonzalo@ximian.com)
   7 //
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System;
  30 using System.Collections.Specialized;
  31 using System.Runtime.Serialization;
  32 using System.Text;
  33 using System.Web.Util;
  34
  35 namespace System.Web
  36 {
  37         [Serializable]
  38         class HttpValueCollection : NameValueCollection
  39         {
  40                 bool _bHeaders;
  41
  42                 internal HttpValueCollection ()
  43                 {
  44                         _bHeaders = false;
  45                 }
  46
  47                 internal HttpValueCollection (string sData)
  48                 {
  49                         FillFromQueryString (sData, Encoding.UTF8);
  50                         IsReadOnly = true;
  51                 }
  52
  53                 internal HttpValueCollection(string sData, bool ReadOnly, Encoding encoding)
  54                 {
  55                         FillFromQueryString (sData, encoding);
  56                         IsReadOnly = ReadOnly;
  57                 }
  58
  59                 protected HttpValueCollection (SerializationInfo info, StreamingContext context)
  60                         : base (info, context)
  61                 {
  62                 }
  63
  64                 // string = header1: value1\r\nheader2: value2
  65                 internal void FillFromHeaders (string sHeaders, Encoding encoding)
  66                 {
  67                         _bHeaders = true;
  68                         char [] arrSplitValue = new char [] {':'};
  69                         string sKey, sValue;
  70
  71                         sKey = "";
  72                         sValue = "";
  73
  74                         string [] arrValues = sHeaders.Split (new char [] {'\r', '\n'});
  75                         foreach (string sLine in arrValues) {
  76                                 string [] arrKeyValue = sLine.Split (arrSplitValue);
  77                                 if (arrKeyValue.Length == 1 && arrKeyValue [0].Length == 0) {
  78                                         // Empty \r or \n is ignored
  79                                         continue;
  80                                 }
  81
  82                                 if (arrKeyValue[0] != sKey && sKey.Length > 0) {
  83                                         Add (HttpUtility.UrlDecode (sKey, encoding),
  84                                              HttpUtility.UrlDecode (sValue, encoding));
  85                                 }
  86
  87                                 if (arrKeyValue.Length == 1) {
  88                                         sValue += "\r\n" + arrKeyValue [0].Trim();
  89                                         continue;
  90                                 } else if (arrKeyValue.Length == 2) {
  91                                         if (arrKeyValue[0].Length == 0) {
  92                                                 sValue += arrKeyValue [1].Trim();
  93                                                 continue;
  94                                         }
  95
  96                                         sKey = arrKeyValue [0].Trim();
  97                                         sValue = arrKeyValue [1].Trim();
  98                                 }
  99                         }
 100
 101                         if (sKey.Length > 0) {
 102                                 Add (HttpUtility.UrlDecode (sKey, encoding),
 103                                      HttpUtility.UrlDecode (sValue, encoding));
 104                         }
 105                 }
 106
 107                 internal void FillFromHeaders (string sData)
 108                 {
 109                         FillFromHeaders (sData, Encoding.UTF8);
 110                 }
 111
 112                 // String = test=aaa&kalle=nisse
 113                 internal void FillFromQueryString (string sData, Encoding encoding)
 114                 {
 115                         FillFromQueryString (sData, encoding, true);
 116                 }
 117
 118                 void FillFromQueryString (string sData, Encoding encoding, bool decode)
 119                 {
 120                         _bHeaders = false;
 121                         if (sData == null || sData == "")
 122                                 return;
 123
 124                         string k, v;
 125                         int eq;
 126                         string [] arrValues = sData.Split (new char [] {'&'});
 127                         foreach (string sValue in arrValues) {
 128                                 eq = sValue.IndexOf ('=');
 129
 130                                 if (eq == -1) {
 131                                         k = sValue.Trim ();
 132                                         if (decode)
 133                                                 k = HttpUtility.UrlDecode (k, encoding);
 134
 135                                         Add (k, String.Empty);
 136                                         continue;
 137                                 }
 138
 139                                 k = sValue.Substring (0, eq).Trim ();
 140                                 v = String.Empty;
 141                                 if (eq + 1 < sValue.Length) {
 142                                         v = sValue.Substring (eq + 1).Trim ();
 143                                         if (v.Length == 0)
 144                                                 v = String.Empty;
 145                                 }
 146
 147                                 if (decode) {
 148                                         k = HttpUtility.UrlDecode (k, encoding);
 149                                         if (v.Length > 0)
 150                                                 v = HttpUtility.UrlDecode (v, encoding);
 151                                 }
 152
 153                                 Add (k, v);
 154                         }
 155                 }
 156
 157                 internal void FillFromQueryString (string sData)
 158                 {
 159                         FillFromQueryString (sData, Encoding.UTF8);
 160                 }
 161
 162                 internal void FillFromCookieString (string sData)
 163                 {
 164                         FillFromQueryString (sData, Encoding.UTF8, false);
 165                 }
 166
 167                 internal void MakeReadOnly ()
 168                 {
 169                         IsReadOnly = true;
 170                 }
 171
 172                 internal void MakeReadWrite ()
 173                 {
 174                         IsReadOnly = false;
 175                 }
 176
 177                 internal void Merge (NameValueCollection oData)
 178                 {
 179                         foreach (string sKey in oData)
 180                                 Add (sKey, oData [sKey]);
 181                 }
 182
 183                 internal void Reset ()
 184                 {
 185                         Clear ();
 186                 }
 187
 188                 internal string ToString (bool UrlEncode)
 189                 {
 190                         StringBuilder result = new StringBuilder ();
 191                         string eq = (_bHeaders ? ":" : "=");
 192                         string separator = (_bHeaders ? "\r\n" : "&");
 193
 194                         foreach (string strKey in AllKeys) {
 195
 196                                 if (result.Length > 0)
 197                                         result.Append (separator);
 198
 199                                 if (UrlEncode) {
 200                                         // use encoding
 201                                         result.Append (HttpUtility.UrlEncode (strKey, Encoding.UTF8));
 202                                         result.Append (eq);
 203                                         result.Append (HttpUtility.UrlEncode (Get (strKey), Encoding.UTF8));
 204                                 } else {
 205                                         result.Append (strKey);
 206                                         result.Append (eq);
 207                                         result.Append (Get (strKey));
 208                                 }
 209                         }
 210
 211                         return result.ToString ();
 212                 }
 213
 214                 public override string ToString ()
 215                 {
 216                         return ToString (false);
 217                 }
 218         }
 219 }
 220