mcs/class/System.Data.OracleClient/System.Data.OracleClient.jvm/Regex.cs

   1 //
   2 // System.Data.OracleClient.Regex.cs
   3 //
   4 // Authors:
   5 //      Konstantin Triger (kostat@mainsoft.com)
   6 //
   7 // (c) 2006 Mainsoft corp. (http://www.mainsoft.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Data.ProviderBase;
  33
  34 namespace System.Data.OracleClient
  35 {
  36         /// <summary>
  37         /// Summary description for Regex.
  38         /// </summary>
  39         internal class OracleParamsRegex : SimpleRegex {
  40                 //static readonly char[] charsEnd = new char[] {' ', '\f', '\t', '\v', '\r', '\n',  ',', ';', '(', ')', '[', ']','='};
  41                 protected override SimpleMatch Match(string input, int beginning, int length) {
  42
  43                         int actualLen = length-1; //there must be something after @
  44                         for (int i = beginning; i < actualLen; i++) {
  45                                 char ch = input[i];
  46                                 switch(ch) {
  47                                         case '\'': {
  48                                                 int end = input.IndexOf('\'', i+1);
  49                                                 if (end < 0)
  50                                                         break;
  51
  52                                                 i = end;
  53                                                 break;
  54                                         }
  55                                         case '"': {
  56                                                 int end = input.IndexOf('"', i+1);
  57                                                 if (end < 0)
  58                                                         break;
  59
  60                                                 i = end;
  61                                                 break;
  62                                         }
  63                                         case '[': {
  64                                                 int end = input.IndexOf(']', i+1);
  65                                                 if (end < 0)
  66                                                         break;
  67
  68                                                 i = end;
  69                                                 break;
  70                                         }
  71                                         case ':': {
  72                                                 int start = i;
  73
  74                                                 do {
  75                                                         i++;
  76                                                 }while (i < length && input[i] == ':');
  77
  78                                                 if (i - start > 1)
  79                                                         break;
  80
  81                                                 while (i < length && IsWordChar(input[i]))
  82                                                         i++;
  83
  84                                                 return new SimpleMatch(this, length, true, start, i-start, input);
  85                                         }
  86                                 }
  87                         }
  88
  89                         return new SimpleMatch(this, length, false, length, 0, input);
  90                 }
  91         }
  92 }