mcs/class/System.Web/System.Web/HttpHelper.cs

   1 //
   2 // System.Web.HttpHelper
   3 //
   4 // Author:
   5 //   Patrik Torstensson (Patrik.Torstensson@labs2.com)
   6 //
   7
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections;
  30 using System.IO;
  31
  32 namespace System.Web {
  33    internal class HttpHelper {
  34       internal static string [] ParseMultiValueHeader(string header) {
  35          if (null == header) {
  36             return null;
  37          }
  38
  39          if (header.Length == 0) {
  40             return null;
  41          }
  42
  43          // Parse the , chars
  44          ArrayList oValues = new ArrayList();
  45
  46          string sValue;
  47
  48          int iLastPos = -1;
  49          int iPos = header.IndexOf(",");
  50
  51          while (iPos != -1) {
  52             sValue = header.Substring(iLastPos + 1, iPos - iLastPos - 1).Trim();
  53             iLastPos = iPos;
  54
  55             iPos = header.IndexOf(",", iPos + 1);
  56             oValues.Add(sValue);
  57          }
  58
  59          sValue = header.Substring(iLastPos + 1).Trim();
  60          oValues.Add(sValue);
  61
  62          string [] arrValues = new string[oValues.Count];
  63
  64          Array.Copy(oValues.ToArray(), 0, arrValues, 0, oValues.Count);
  65
  66          return arrValues;
  67       }
  68    }
  69 }