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