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 using System.IO;
  38
  39 namespace Mainsoft.Data.Configuration
  40 {
  41         public class ConnectionStringDictionary: IConnectionStringDictionary
  42         {
  43                 #region Fields
  44
  45                 private readonly IDictionary _dictionary;
  46                 private readonly NameValueCollection _mapping;
  47                 private readonly NameValueCollection _actualKeys;
  48                 const string DataDirectoryPlaceholder = "|DataDirectory|";
  49
  50                 #endregion // Fields
  51
  52                 #region Constructors
  53
  54                 public ConnectionStringDictionary(string connectionString, NameValueCollection defaultMapping)
  55                 {
  56                         _actualKeys = new NameValueCollection(StringComparer.OrdinalIgnoreCase);
  57                         _dictionary = Parse (connectionString);
  58                         _mapping = defaultMapping;
  59                 }
  60
  61                 #endregion // Constructors
  62
  63                 #region Methods
  64
  65                 public string GetConnectionStringKey (string key)
  66                 {
  67                         string cached = _actualKeys [key];
  68                         if (cached != null)
  69                                 return cached;
  70
  71                         if (_mapping != null)
  72                         for(int i = 0, c = _mapping.Keys.Count; i < c; i++) {
  73                                 if (string.Compare(key, _mapping.Keys[i], StringComparison.OrdinalIgnoreCase) == 0) {
  74                                         string[] values = _mapping.GetValues(i);
  75                                         for(int j = 0; j < values.Length; j++) {
  76                                                 string actualKey = values[j];
  77                                                 if (_dictionary.Contains (actualKey)) {
  78                                                         _actualKeys.Add (key, actualKey);
  79                                                         return actualKey;
  80                                                 }
  81                                         }
  82                                 }
  83                         }
  84
  85                         if (_dictionary.Contains(key))
  86                                 return key;
  87
  88                         return null;
  89                 }
  90
  91                 public object GetValue (string key)
  92                 {
  93                         return _dictionary [key];
  94                 }
  95
  96                 public static IDictionary Parse (string connectionString)
  97                 {
  98                         IDictionary userParameters = new Hashtable (StringComparer.OrdinalIgnoreCase);
  99
 100                         if (connectionString == null || connectionString.Length == 0) {
 101                                 return userParameters;
 102                         }
 103                         //connectionString += ";";
 104
 105                         if (connectionString.IndexOf (DataDirectoryPlaceholder, StringComparison.Ordinal) >= 0) {
 106                                 string dataDirectory = (string) AppDomain.CurrentDomain.GetData ("DataDirectory");
 107                                 if (dataDirectory != null && dataDirectory.Length > 0) {
 108                                         char lastChar = dataDirectory [dataDirectory.Length - 1];
 109                                         if (lastChar != Path.DirectorySeparatorChar &&
 110                                                 lastChar != Path.AltDirectorySeparatorChar)
 111                                                 dataDirectory += '/';
 112                                 }
 113                                 connectionString = connectionString.Replace (DataDirectoryPlaceholder, dataDirectory);
 114                         }
 115
 116                         bool inQuote = false;
 117                         bool inDQuote = false;
 118                         bool inName = true;
 119
 120                         string name = String.Empty;
 121                         string value = String.Empty;
 122                         StringBuilder sb = new StringBuilder (connectionString.Length);
 123
 124                         for (int i = 0; i < connectionString.Length; i ++) {
 125                                 char c = connectionString [i];
 126                                 char peek;
 127                                 if (i == connectionString.Length - 1)
 128                                         peek = '\0';
 129                                 else
 130                                         peek = connectionString [i + 1];
 131
 132                                 switch (c) {
 133                                         case '\'':
 134                                                 if (inDQuote)
 135                                                         sb.Append (c);
 136                                                 else if (peek == c) {
 137                                                         sb.Append(c);
 138                                                         i ++;
 139                                                 }
 140                                                 else
 141                                                         inQuote = !inQuote;
 142                                                 break;
 143                                         case '"':
 144                                                 if (inQuote)
 145                                                         sb.Append(c);
 146                                                 else if (peek == c) {
 147                                                         sb.Append(c);
 148                                                         i ++;
 149                                                 }
 150                                                 else
 151                                                         inDQuote = !inDQuote;
 152                                                 break;
 153                                         case ';':
 154                                                 if (inDQuote || inQuote)
 155                                                         sb.Append(c);
 156                                                 else {
 157                                                         if (name != null && name.Length > 0) {
 158                                                                 value = sb.ToString();
 159                                                                 userParameters [name.Trim()] = value.Trim();
 160                                                         }
 161                                                         inName = true;
 162                                                         name = String.Empty;
 163                                                         value = String.Empty;
 164                                                         sb.Length = 0;
 165                                                 }
 166                                                 break;
 167                                         case '=':
 168                                                 if (inDQuote || inQuote || !inName)
 169                                                         sb.Append (c);
 170                                                 else if (peek == c) {
 171                                                         sb.Append (c);
 172                                                         i += 1;
 173                                                 }
 174                                                 else {
 175                                                         name = sb.ToString();
 176                                                         sb.Length = 0;
 177                                                         inName = false;
 178                                                 }
 179                                                 break;
 180                                         case ' ':
 181                                                 if (inQuote || inDQuote)
 182                                                         sb.Append(c);
 183                                                 else if (sb.Length > 0 && peek != ';')
 184                                                         sb.Append(c);
 185                                                 break;
 186                                         default:
 187                                                 sb.Append(c);
 188                                                 break;
 189                                 }
 190                         }
 191
 192                         if (inDQuote || inQuote)
 193                                 throw new ArgumentException("connectionString");
 194
 195                         if (name != null && name.Length > 0) {
 196                                 value = sb.ToString();
 197                                 userParameters [name.Trim()] = value.Trim();
 198                         }
 199
 200                         return userParameters;
 201                 }
 202
 203
 204                 #endregion // Methods
 205
 206                 #region IDictionary Members
 207
 208                 public virtual bool IsFixedSize
 209                 {
 210                         get { return _dictionary.IsFixedSize; }
 211                 }
 212
 213                 public virtual bool IsReadOnly
 214                 {
 215                         get { return _dictionary.IsReadOnly; }
 216                 }
 217
 218                 public virtual ICollection Keys
 219                 {
 220                         get {
 221                                 return _dictionary.Keys;
 222                         }
 223                 }
 224
 225                 public virtual object this [object key] {
 226                         get {
 227
 228                                 if (!(key is String))
 229                                         throw new ArgumentException("key is not string");
 230
 231                                 string skey = (string)key;
 232
 233                                 skey = GetConnectionStringKey(skey);
 234                                 if (skey == null)
 235                                         return null;
 236
 237                                 return _dictionary[skey];
 238                         }
 239
 240                         set {
 241                                 if (!(key is String))
 242                                         throw new ArgumentException("key is not string");
 243
 244                                 string skey = (string)key;
 245
 246                                 skey = GetConnectionStringKey(skey);
 247                                 if (skey == null)
 248                                         skey = (string)key;
 249
 250                                 _dictionary[skey] = value;
 251                         }
 252                 }
 253
 254                 public virtual ICollection Values
 255                 {
 256                         get { return _dictionary.Values; }
 257                 }
 258
 259                 public virtual void Add (object key, object value)
 260                 {
 261                         _dictionary.Add ((string)key, (string)value);
 262                 }
 263
 264                 public virtual void Clear ()
 265                 {
 266                         _dictionary.Clear ();
 267                 }
 268
 269                 public virtual bool Contains (object key)
 270                 {
 271                         return _dictionary.Contains (key);
 272                 }
 273
 274                 public virtual IDictionaryEnumerator GetEnumerator ()
 275                 {
 276                         return _dictionary.GetEnumerator ();
 277                 }
 278
 279                 public virtual void Remove (object key)
 280                 {
 281                         _dictionary.Remove ((string)key);
 282                 }
 283
 284                 #endregion // IDictionary Members
 285
 286                 #region IEnumerable Members
 287
 288                 IEnumerator IEnumerable.GetEnumerator ()
 289                 {
 290                         return this.GetEnumerator();
 291                 }
 292
 293                 #endregion // IEnumerable Members
 294
 295                 #region ICollection Members
 296
 297                 public virtual bool IsSynchronized
 298                 {
 299                         get { return ((ICollection)_dictionary).IsSynchronized; }
 300                 }
 301
 302                 public virtual int Count
 303                 {
 304                         get { return _dictionary.Count; }
 305                 }
 306
 307                 public virtual void CopyTo (Array array, int index)
 308                 {
 309                         _dictionary.CopyTo (array, index);
 310                 }
 311
 312                 public virtual object SyncRoot
 313                 {
 314                         get {return ((ICollection)_dictionary).SyncRoot; }
 315                 }
 316
 317                 #endregion // ICollection Members
 318         }
 319 }