mcs/class/System.Data/Mainsoft.Data.Configuration.jvm/KeyMapperBase.cs

   1 //
   2 // System.Data.OleDb.OleDbConnection
   3 //
   4 // Authors:
   5 //      Konstantin Triger <kostat@mainsoft.com>
   6 //      Boris Kirzner <borisk@mainsoft.com>
   7 //
   8 // (C) 2006 Mainsoft Corporation (http://www.mainsoft.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using System.Collections.Specialized;
  35 using System.Text;
  36 using System.Globalization;
  37
  38 namespace Mainsoft.Data.Configuration
  39 {
  40         public class ConnectionStringDictionary: IConnectionStringDictionary
  41         {
  42                 #region Fields
  43
  44                 private readonly IDictionary _dictionary;
  45                 private readonly NameValueCollection _mapping;
  46                 private readonly NameValueCollection _actualKeys;
  47
  48                 #endregion // Fields
  49
  50                 #region Constructors
  51
  52                 public ConnectionStringDictionary(string connectionString, NameValueCollection defaultMapping)
  53                 {
  54                         _actualKeys = new NameValueCollection();
  55                         _dictionary = Parse (connectionString);
  56                         _mapping = defaultMapping;
  57                 }
  58
  59                 #endregion // Constructors
  60
  61                 #region Methods
  62
  63                 public string GetConnectionStringKey (string key)
  64                 {
  65                         string cached = _actualKeys [key];
  66                         if (cached != null)
  67                                 return cached;
  68
  69                         if (_mapping != null)
  70                         for(int i = 0, c = _mapping.Keys.Count; i < c; i++) {
  71                                 if (string.Compare(key, _mapping.Keys[i], true,
  72                                         CultureInfo.InvariantCulture) == 0) {
  73                                         string[] values = _mapping.GetValues(i);
  74                                         for(int j = 0; j < values.Length; j++) {
  75                                                 string actualKey = values[j];
  76                                                 if (_dictionary.Contains (actualKey)) {
  77                                                         _actualKeys.Add (key, actualKey);
  78                                                         return actualKey;
  79                                                 }
  80                                         }
  81                                 }
  82                         }
  83
  84                         if (_dictionary.Contains(key))
  85                                 return key;
  86
  87                         return null;
  88                 }
  89
  90                 public static IDictionary Parse (string connectionString)
  91                 {
  92                         IDictionary userParameters = CollectionsUtil.CreateCaseInsensitiveHashtable();
  93
  94                         if (connectionString == null || connectionString.Length == 0) {
  95                                 return userParameters;
  96                         }
  97                         //connectionString += ";";
  98
  99                         bool inQuote = false;
 100                         bool inDQuote = false;
 101                         bool inName = true;
 102
 103                         string name = String.Empty;
 104                         string value = String.Empty;
 105                         StringBuilder sb = new StringBuilder (connectionString.Length);
 106
 107                         for (int i = 0; i < connectionString.Length; i ++) {
 108                                 char c = connectionString [i];
 109                                 char peek;
 110                                 if (i == connectionString.Length - 1)
 111                                         peek = '\0';
 112                                 else
 113                                         peek = connectionString [i + 1];
 114
 115                                 switch (c) {
 116                                         case '\'':
 117                                                 if (inDQuote)
 118                                                         sb.Append (c);
 119                                                 else if (peek == c) {
 120                                                         sb.Append(c);
 121                                                         i ++;
 122                                                 }
 123                                                 else
 124                                                         inQuote = !inQuote;
 125                                                 break;
 126                                         case '"':
 127                                                 if (inQuote)
 128                                                         sb.Append(c);
 129                                                 else if (peek == c) {
 130                                                         sb.Append(c);
 131                                                         i ++;
 132                                                 }
 133                                                 else
 134                                                         inDQuote = !inDQuote;
 135                                                 break;
 136                                         case ';':
 137                                                 if (inDQuote || inQuote)
 138                                                         sb.Append(c);
 139                                                 else {
 140                                                         if (name != null && name.Length > 0) {
 141                                                                 value = sb.ToString();
 142                                                                 userParameters [name.Trim()] = value.Trim();
 143                                                         }
 144                                                         inName = true;
 145                                                         name = String.Empty;
 146                                                         value = String.Empty;
 147                                                         sb.Length = 0;
 148                                                 }
 149                                                 break;
 150                                         case '=':
 151                                                 if (inDQuote || inQuote || !inName)
 152                                                         sb.Append (c);
 153                                                 else if (peek == c) {
 154                                                         sb.Append (c);
 155                                                         i += 1;
 156                                                 }
 157                                                 else {
 158                                                         name = sb.ToString();
 159                                                         sb.Length = 0;
 160                                                         inName = false;
 161                                                 }
 162                                                 break;
 163                                         case ' ':
 164                                                 if (inQuote || inDQuote)
 165                                                         sb.Append(c);
 166                                                 else if (sb.Length > 0 && peek != ';')
 167                                                         sb.Append(c);
 168                                                 break;
 169                                         default:
 170                                                 sb.Append(c);
 171                                                 break;
 172                                 }
 173                         }
 174
 175                         if (inDQuote || inQuote)
 176                                 throw new ArgumentException("connectionString");
 177
 178                         if (name != null && name.Length > 0) {
 179                                 value = sb.ToString();
 180                                 userParameters [name.Trim()] = value.Trim();
 181                         }
 182
 183                         return userParameters;
 184                 }
 185
 186
 187                 #endregion // Methods
 188
 189                 #region IDictionary Members
 190
 191                 public virtual bool IsFixedSize
 192                 {
 193                         get { return _dictionary.IsFixedSize; }
 194                 }
 195
 196                 public virtual bool IsReadOnly
 197                 {
 198                         get { return _dictionary.IsReadOnly; }
 199                 }
 200
 201                 public virtual ICollection Keys
 202                 {
 203                         get {
 204                                 return _dictionary.Keys;
 205                         }
 206                 }
 207
 208                 public virtual object this [object key] {
 209                         get {
 210
 211                                 if (!(key is String))
 212                                         throw new ArgumentException("key is not string");
 213
 214                                 string skey = (string)key;
 215
 216                                 skey = GetConnectionStringKey(skey);
 217                                 if (skey == null)
 218                                         return null;
 219
 220                                 return _dictionary[skey];
 221                         }
 222
 223                         set {
 224                                 if (!(key is String))
 225                                         throw new ArgumentException("key is not string");
 226
 227                                 string skey = (string)key;
 228
 229                                 skey = GetConnectionStringKey(skey);
 230                                 if (skey == null)
 231                                         skey = (string)key;
 232
 233                                 _dictionary[skey] = value;
 234                         }
 235                 }
 236
 237                 public virtual ICollection Values
 238                 {
 239                         get { return _dictionary.Values; }
 240                 }
 241
 242                 public virtual void Add (object key, object value)
 243                 {
 244                         _dictionary.Add ((string)key, (string)value);
 245                 }
 246
 247                 public virtual void Clear ()
 248                 {
 249                         _dictionary.Clear ();
 250                 }
 251
 252                 public virtual bool Contains (object key)
 253                 {
 254                         return _dictionary.Contains (key);
 255                 }
 256
 257                 public virtual IDictionaryEnumerator GetEnumerator ()
 258                 {
 259                         return _dictionary.GetEnumerator ();
 260                 }
 261
 262                 public virtual void Remove (object key)
 263                 {
 264                         _dictionary.Remove ((string)key);
 265                 }
 266
 267                 #endregion // IDictionary Members
 268
 269                 #region IEnumerable Members
 270
 271                 IEnumerator IEnumerable.GetEnumerator ()
 272                 {
 273                         return this.GetEnumerator();
 274                 }
 275
 276                 #endregion // IEnumerable Members
 277
 278                 #region ICollection Members
 279
 280                 public virtual bool IsSynchronized
 281                 {
 282                         get { return ((ICollection)_dictionary).IsSynchronized; }
 283                 }
 284
 285                 public virtual int Count
 286                 {
 287                         get { return _dictionary.Count; }
 288                 }
 289
 290                 public virtual void CopyTo (Array array, int index)
 291                 {
 292                         _dictionary.CopyTo (array, index);
 293                 }
 294
 295                 public virtual object SyncRoot
 296                 {
 297                         get {return ((ICollection)_dictionary).SyncRoot; }
 298                 }
 299
 300                 #endregion // ICollection Members
 301         }
 302 }