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| 3 | 3 | // See the LICENSE file in the project root for more information. | 
| 4 | 4 | 
 | 
| 5 | 5 | using System; | 
| 6 |  | -using System.Collections.Generic; | 
| 7 |  | -using System.Globalization; | 
| 8 | 6 | using System.IO; | 
| 9 |  | -using System.Text; | 
| 10 | 7 | 
 | 
| 11 | 8 | namespace Microsoft.Data.Common | 
| 12 | 9 | { | 
| 13 | 10 |     internal partial class DbConnectionOptions | 
| 14 | 11 |     { | 
| 15 |  | -        // instances of this class are intended to be immutable, i.e readonly | 
| 16 |  | -        // used by pooling classes so it is much easier to verify correctness | 
| 17 |  | -        // when not worried about the class being modified during execution | 
| 18 |  | - | 
| 19 |  | -        public DbConnectionOptions(string connectionString, Dictionary<string, string> synonyms) | 
| 20 |  | -        { | 
| 21 |  | -            _parsetable = new Dictionary<string, string>(); | 
| 22 |  | -            _usersConnectionString = ((null != connectionString) ? connectionString : ""); | 
| 23 |  | - | 
| 24 |  | -            // first pass on parsing, initial syntax check | 
| 25 |  | -            if (0 < _usersConnectionString.Length) | 
| 26 |  | -            { | 
| 27 |  | -                _keyChain = ParseInternal(_parsetable, _usersConnectionString, true, synonyms, false); | 
| 28 |  | -                HasPasswordKeyword = (_parsetable.ContainsKey(KEY.Password) || _parsetable.ContainsKey(SYNONYM.Pwd)); | 
| 29 |  | -                HasUserIdKeyword = (_parsetable.ContainsKey(KEY.User_ID) || _parsetable.ContainsKey(SYNONYM.UID)); | 
| 30 |  | -            } | 
| 31 |  | -        } | 
| 32 |  | - | 
| 33 |  | -        protected DbConnectionOptions(DbConnectionOptions connectionOptions) | 
| 34 |  | -        { // Clone used by SqlConnectionString | 
| 35 |  | -            _usersConnectionString = connectionOptions._usersConnectionString;             | 
| 36 |  | -            _parsetable = connectionOptions._parsetable; | 
| 37 |  | -            _keyChain = connectionOptions._keyChain; | 
| 38 |  | -            HasPasswordKeyword = connectionOptions.HasPasswordKeyword; | 
| 39 |  | -            HasUserIdKeyword = connectionOptions.HasUserIdKeyword; | 
| 40 |  | -        } | 
| 41 |  | - | 
| 42 |  | -        public bool IsEmpty => _keyChain == null; | 
| 43 |  | - | 
| 44 |  | -        internal bool TryGetParsetableValue(string key, out string value) => _parsetable.TryGetValue(key, out value); | 
| 45 |  | - | 
| 46 |  | -        // same as Boolean, but with SSPI thrown in as valid yes | 
| 47 |  | -        public bool ConvertValueToIntegratedSecurity() | 
|  | 12 | +        internal string ExpandAttachDbFileName(string replacementValue) | 
| 48 | 13 |         { | 
| 49 |  | -            string value; | 
| 50 |  | -            return _parsetable.TryGetValue(KEY.Integrated_Security, out value) && value != null ? | 
| 51 |  | -                ConvertValueToIntegratedSecurityInternal(value) : | 
| 52 |  | -                false; | 
| 53 |  | -        } | 
|  | 14 | +            int copyPosition = 0; | 
| 54 | 15 | 
 | 
| 55 |  | -        internal bool ConvertValueToIntegratedSecurityInternal(string stringValue) | 
| 56 |  | -        { | 
| 57 |  | -            if (CompareInsensitiveInvariant(stringValue, "sspi") || CompareInsensitiveInvariant(stringValue, "true") || CompareInsensitiveInvariant(stringValue, "yes")) | 
| 58 |  | -                return true; | 
| 59 |  | -            else if (CompareInsensitiveInvariant(stringValue, "false") || CompareInsensitiveInvariant(stringValue, "no")) | 
| 60 |  | -                return false; | 
| 61 |  | -            else | 
|  | 16 | +            System.Text.StringBuilder builder = new(_usersConnectionString.Length); | 
|  | 17 | +            for (NameValuePair current = KeyChain; null != current; current = current.Next) | 
| 62 | 18 |             { | 
| 63 |  | -                string tmp = stringValue.Trim();  // Remove leading & trailing whitespace. | 
| 64 |  | -                if (CompareInsensitiveInvariant(tmp, "sspi") || CompareInsensitiveInvariant(tmp, "true") || CompareInsensitiveInvariant(tmp, "yes")) | 
| 65 |  | -                    return true; | 
| 66 |  | -                else if (CompareInsensitiveInvariant(tmp, "false") || CompareInsensitiveInvariant(tmp, "no")) | 
| 67 |  | -                    return false; | 
|  | 19 | +                if (string.Equals(current.Name, DbConnectionStringKeywords.AttachDBFilename, StringComparison.InvariantCultureIgnoreCase)) | 
|  | 20 | +                { | 
|  | 21 | +                    builder.Append($"{current.Name}={replacementValue};"); | 
|  | 22 | +                } | 
| 68 | 23 |                 else | 
| 69 | 24 |                 { | 
| 70 |  | -                    throw ADP.InvalidConnectionOptionValue(KEY.Integrated_Security); | 
|  | 25 | +                    builder.Append(_usersConnectionString, copyPosition, current.Length); | 
| 71 | 26 |                 } | 
|  | 27 | +                copyPosition += current.Length; | 
| 72 | 28 |             } | 
| 73 |  | -        } | 
| 74 |  | - | 
| 75 |  | -        public int ConvertValueToInt32(string keyName, int defaultValue) | 
| 76 |  | -        { | 
| 77 |  | -            string value; | 
| 78 |  | -            return _parsetable.TryGetValue(keyName, out value) && value != null ? | 
| 79 |  | -                ConvertToInt32Internal(keyName, value) : | 
| 80 |  | -                defaultValue; | 
| 81 |  | -        } | 
| 82 |  | - | 
| 83 |  | -        internal static int ConvertToInt32Internal(string keyname, string stringValue) | 
| 84 |  | -        { | 
| 85 |  | -            try | 
| 86 |  | -            { | 
| 87 |  | -                return int.Parse(stringValue, System.Globalization.NumberStyles.Integer, CultureInfo.InvariantCulture); | 
| 88 |  | -            } | 
| 89 |  | -            catch (FormatException e) | 
| 90 |  | -            { | 
| 91 |  | -                throw ADP.InvalidConnectionOptionValue(keyname, e); | 
| 92 |  | -            } | 
| 93 |  | -            catch (OverflowException e) | 
| 94 |  | -            { | 
| 95 |  | -                throw ADP.InvalidConnectionOptionValue(keyname, e); | 
| 96 |  | -            } | 
| 97 |  | -        } | 
| 98 |  | - | 
| 99 |  | -        public string ConvertValueToString(string keyName, string defaultValue) | 
| 100 |  | -        { | 
| 101 |  | -            string value; | 
| 102 |  | -            return _parsetable.TryGetValue(keyName, out value) && value != null ? value : defaultValue; | 
| 103 |  | -        } | 
| 104 | 29 | 
 | 
| 105 |  | -        public bool ContainsKey(string keyword) | 
| 106 |  | -        { | 
| 107 |  | -            return _parsetable.ContainsKey(keyword); | 
| 108 |  | -        } | 
| 109 |  | - | 
| 110 |  | -        protected internal virtual string Expand() | 
| 111 |  | -        { | 
| 112 |  | -            return _usersConnectionString; | 
|  | 30 | +            return builder.ToString(); | 
| 113 | 31 |         } | 
| 114 | 32 | 
 | 
| 115 | 33 |         // SxS notes: | 
| @@ -151,25 +69,5 @@ internal static string ExpandDataDirectory(string keyword, string value) | 
| 151 | 69 |             return fullPath; | 
| 152 | 70 |         } | 
| 153 | 71 | 
 | 
| 154 |  | -        internal string ExpandAttachDbFileName(string replacementValue) | 
| 155 |  | -        { | 
| 156 |  | -            int copyPosition = 0; | 
| 157 |  | - | 
| 158 |  | -            StringBuilder builder = new StringBuilder(_usersConnectionString.Length); | 
| 159 |  | -            for (NameValuePair current = _keyChain; null != current; current = current.Next) | 
| 160 |  | -            { | 
| 161 |  | -                if (current.Name == KEY.AttachDBFileName) | 
| 162 |  | -                { | 
| 163 |  | -                    builder.Append($"{KEY.AttachDBFileName}={replacementValue};"); | 
| 164 |  | -                } | 
| 165 |  | -                else | 
| 166 |  | -                { | 
| 167 |  | -                    builder.Append(_usersConnectionString, copyPosition, current.Length); | 
| 168 |  | -                } | 
| 169 |  | -                copyPosition += current.Length; | 
| 170 |  | -            } | 
| 171 |  | - | 
| 172 |  | -            return builder.ToString(); | 
| 173 |  | -        } | 
| 174 | 72 |     } | 
| 175 | 73 | } | 
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