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root/public/ibx/trunk/fbintf/client/FBAttachment.pas

Comparing ibx/trunk/fbintf/client/FBAttachment.pas (file contents):
Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
Revision 291 by tony, Fri Apr 17 10:26:08 2020 UTC

#	Line 25 | Line 25
25		*
26		*)
27		unit FBAttachment;
28	+	{$IFDEF MSWINDOWS}
29	+	{$DEFINE WINDOWS}
30	+	{$ENDIF}
31
32		{$IFDEF FPC}
33	<	{$mode objfpc}{$H+}
33	>	{$mode delphi}
34		{$interfaces COM}
35	+	{$define HASREQEX}
36		{$ENDIF}
37
38		interface
39
40		uses
41	<	Classes, SysUtils, IB,  FBParamBlock, FBActivityMonitor;
41	>	Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB,  FBParamBlock,
42	>	FBActivityMonitor, FBClientAPI;
43
44		type
45	+	TCharsetMap = record
46	+	CharsetID: integer;
47	+	CharSetName: AnsiString;
48	+	CharSetWidth: integer;
49	+	CodePage: TSystemCodePage;
50	+	AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
51	+	end;
52
53		{ TFBAttachment }
54
#	Line 44 | Line 56 | type
56		private
57		FDPB: IDPB;
58		FFirebirdAPI: IFirebirdAPI;
59	+	FODSMajorVersion: integer;
60	+	FODSMinorVersion: integer;
61	+	FUserCharSetMap: array of TCharSetMap;
62	+	FSecDatabase: AnsiString;
63		protected
64	<	FDatabaseName: string;
64	>	FDatabaseName: AnsiString;
65		FRaiseExceptionOnConnectError: boolean;
66		FSQLDialect: integer;
67		FHasDefaultCharSet: boolean;
68		FCharSetID: integer;
69		FCodePage: TSystemCodePage;
70	<	constructor Create(DatabaseName: string; DPB: IDPB;
70	>	FRemoteProtocol: AnsiString;
71	>	FAuthMethod: AnsiString;
72	>	constructor Create(api: TFBClientAPI; DatabaseName: AnsiString; DPB: IDPB;
73		RaiseExceptionOnConnectError: boolean);
74		procedure CheckHandle; virtual; abstract;
75	<	function GenerateCreateDatabaseSQL(DatabaseName: string; aDPB: IDPB): string;
75	>	function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
76	>	procedure GetODSAndConnectionInfo;
77	>	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; virtual; abstract;
78	>	function IsConnected: boolean; virtual; abstract;
79		procedure EndAllTransactions;
80	+	procedure DPBFromCreateSQL(CreateSQL: AnsiString);
81		procedure SetParameters(SQLParams: ISQLParams; params: array of const);
82		public
83		destructor Destroy; override;
84	+	function getFirebirdAPI: IFirebirdAPI;
85		function getDPB: IDPB;
86		function AllocateBPB: IBPB;
87	+	function AllocateDIRB: IDIRB;
88		function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
89		function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
90		procedure Disconnect(Force: boolean=false); virtual; abstract;
91	<	procedure ExecImmediate(transaction: ITransaction; sql: string; aSQLDialect: integer); overload; virtual; abstract;
92	<	procedure ExecImmediate(TPB: array of byte; sql: string; aSQLDialect: integer); overload;
93	<	procedure ExecImmediate(transaction: ITransaction; sql: string); overload;
94	<	procedure ExecImmediate(TPB: array of byte; sql: string); overload;
95	<	function ExecuteSQL(TPB: array of byte; sql: string; SQLDialect: integer; params: array of const): IResults; overload;
96	<	function ExecuteSQL(transaction: ITransaction; sql: string; SQLDialect: integer; params: array of const): IResults; overload;
97	<	function ExecuteSQL(TPB: array of byte; sql: string; params: array of const): IResults; overload;
98	<	function ExecuteSQL(transaction: ITransaction; sql: string; params: array of const): IResults; overload;
99	<	function OpenCursor(transaction: ITransaction; sql: string; aSQLDialect: integer): IResultSet; overload;
100	<	function OpenCursor(transaction: ITransaction; sql: string; aSQLDialect: integer;
91	>	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
92	>	procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
93	>	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
94	>	procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
95	>	function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
96	>	function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
97	>	function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
98	>	function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
99	>	function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
100	>	function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
101		params: array of const): IResultSet; overload;
102	<	function OpenCursor(transaction: ITransaction; sql: string): IResultSet; overload;
103	<	function OpenCursor(transaction: ITransaction; sql: string;
102	>	function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
103	>	function OpenCursor(transaction: ITransaction; sql: AnsiString;
104		params: array of const): IResultSet; overload;
105	<	function OpenCursorAtStart(transaction: ITransaction; sql: string; aSQLDialect: integer): IResultSet; overload;
106	<	function OpenCursorAtStart(transaction: ITransaction; sql: string; aSQLDialect: integer;
105	>	function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
106	>	function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
107		params: array of const): IResultSet; overload;
108	<	function OpenCursorAtStart(transaction: ITransaction; sql: string): IResultSet; overload;
109	<	function OpenCursorAtStart(transaction: ITransaction; sql: string;
108	>	function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
109	>	function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
110		params: array of const): IResultSet; overload;
111	<	function OpenCursorAtStart(sql: string): IResultSet; overload;
112	<	function OpenCursorAtStart(sql: string;
111	>	function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
112	>	function OpenCursorAtStart(sql: AnsiString;
113		params: array of const): IResultSet; overload;
114	<	function Prepare(transaction: ITransaction; sql: string; aSQLDialect: integer): IStatement; overload; virtual; abstract;
115	<	function Prepare(transaction: ITransaction; sql: string): IStatement; overload;
116	<	function PrepareWithNamedParameters(transaction: ITransaction; sql: string;
117	<	aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload; virtual; abstract;
118	<	function PrepareWithNamedParameters(transaction: ITransaction; sql: string;
119	<	GenerateParamNames: boolean=false): IStatement; overload;
114	>	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
115	>	function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
116	>	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
117	>	aSQLDialect: integer; GenerateParamNames: boolean=false;
118	>	CaseSensitiveParams: boolean = false): IStatement; overload; virtual; abstract;
119	>	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
120	>	GenerateParamNames: boolean=false;
121	>	CaseSensitiveParams: boolean = false): IStatement; overload;
122		function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
123	<	function GetEventHandler(Event: string): IEvents; overload;
123	>	function GetEventHandler(Event: AnsiString): IEvents; overload;
124
125		function GetSQLDialect: integer;
126	<	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; virtual; abstract; overload;
126	>	function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
127	>	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
128	>	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
129	>	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
130		function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
131	+	function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
132	+	): IArray; overload;
133	+	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; virtual; abstract;
134	+	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
135	+	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; virtual; abstract;
136		property SQLDialect: integer read FSQLDialect;
103	–	property HasDefaultCharSet: boolean read FHasDefaultCharSet;
104	–	property CharSetID: integer read FCharSetID;
105	–	property CodePage: TSystemCodePage read FCodePage;
137		property DPB: IDPB read FDPB;
138	+	public
139	+	function GetDBInformation(Requests: array of byte): IDBInformation; overload;
140	+	function GetDBInformation(Request: byte): IDBInformation; overload;
141	+	function GetDBInformation(Requests: IDIRB): IDBInformation; overload;
142	+	function GetConnectString: AnsiString;
143	+	function GetRemoteProtocol: AnsiString;
144	+	function GetAuthenticationMethod: AnsiString;
145	+	function GetSecurityDatabase: AnsiString;
146	+	function GetODSMajorVersion: integer;
147	+	function GetODSMinorVersion: integer;
148	+	{Character Sets}
149	+	function HasDefaultCharSet: boolean;
150	+	function GetDefaultCharSetID: integer;
151	+	function GetCharsetName(CharSetID: integer): AnsiString;
152	+	function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
153	+	function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
154	+	function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
155	+	function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
156	+	procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
157	+	AllowReverseLookup:boolean; out CharSetID: integer);
158	+	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; virtual; abstract;
159	+	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; virtual; abstract;
160	+	property CharSetID: integer read FCharSetID;
161	+	property CodePage: TSystemCodePage read FCodePage;
162		end;
163
164		implementation
165
166	<	uses FBMessages, FBTransaction;
166	>	uses FBMessages, IBUtils, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
167	>
168	>	const
169	>	CharSetMap: array [0..69] of TCharsetMap = (
170	>	(CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
171	>	(CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
172	>	(CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
173	>	(CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
174	>	(CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
175	>	(CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
176	>	(CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
177	>	(CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
178	>	(CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
179	>	(CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
180	>	(CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
181	>	(CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
182	>	(CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
183	>	(CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
184	>	(CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
185	>	(CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
186	>	(CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
187	>	(CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
188	>	(CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
189	>	(CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
190	>	(CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
191	>	(CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
192	>	(CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
193	>	(CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
194	>	(CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
195	>	(CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
196	>	(CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
197	>	(CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
198	>	(CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
199	>	(CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
200	>	(CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
201	>	(CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
202	>	(CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
203	>	(CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
204	>	(CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
205	>	(CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
206	>	(CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
207	>	(CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
208	>	(CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
209	>	(CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
210	>	(CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
211	>	(CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
212	>	(CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
213	>	(CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
214	>	(CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
215	>	(CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
216	>	(CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
217	>	(CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
218	>	(CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
219	>	(CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
220	>	(CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
221	>	(CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
222	>	(CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
223	>	(CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
224	>	(CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
225	>	(CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
226	>	(CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
227	>	(CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
228	>	(CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
229	>	(CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
230	>	(CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
231	>	(CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
232	>	(CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
233	>	(CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
234	>	(CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
235	>	(CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
236	>	(CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
237	>	(CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
238	>	(CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
239	>	(CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
240	>	);
241	>
242	>
243	>
244
245		{ TFBAttachment }
246
247	<	constructor TFBAttachment.Create(DatabaseName: string; DPB: IDPB;
248	<	RaiseExceptionOnConnectError: boolean);
247	>	procedure TFBAttachment.GetODSAndConnectionInfo;
248	>	var DBInfo: IDBInformation;
249	>	i: integer;
250	>	Stmt: IStatement;
251	>	ResultSet: IResultSet;
252	>	Param: IDPBItem;
253	>	begin
254	>	if not IsConnected then Exit;
255	>	DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
256	>	isc_info_db_SQL_Dialect]);
257	>	for i := 0 to DBInfo.GetCount - 1 do
258	>	with DBInfo[i] do
259	>	case getItemType of
260	>	isc_info_ods_minor_version:
261	>	FODSMinorVersion := getAsInteger;
262	>	isc_info_ods_version:
263	>	FODSMajorVersion := getAsInteger;
264	>	isc_info_db_SQL_Dialect:
265	>	FSQLDialect := getAsInteger;
266	>	end;
267	>
268	>	FCharSetID := 0;
269	>	FRemoteProtocol := '';
270	>	FAuthMethod := 'Legacy_Auth';
271	>	FSecDatabase := 'Default';
272	>	if FODSMajorVersion > 11 then
273	>	begin
274	>	Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
275	>	'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL, MON$AUTH_METHOD, MON$SEC_DATABASE From MON$ATTACHMENTS, MON$DATABASE '+
276	>	'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
277	>	ResultSet := Stmt.OpenCursor;
278	>	if ResultSet.FetchNext then
279	>	begin
280	>	FCharSetID := ResultSet[0].AsInteger;
281	>	FRemoteProtocol := Trim(ResultSet[1].AsString);
282	>	FAuthMethod := Trim(ResultSet[2].AsString);
283	>	FSecDatabase := Trim(ResultSet[3].AsString);
284	>	end
285	>	end
286	>	else
287	>	if (FODSMajorVersion = 11) and (FODSMinorVersion >= 1) then
288	>	begin
289	>	Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
290	>	'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL From MON$ATTACHMENTS '+
291	>	'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
292	>	ResultSet := Stmt.OpenCursor;
293	>	if ResultSet.FetchNext then
294	>	begin
295	>	FCharSetID := ResultSet[0].AsInteger;
296	>	FRemoteProtocol := Trim(ResultSet[1].AsString);
297	>	end
298	>	end
299	>	else
300	>	if DPB <> nil then
301	>	begin
302	>	Param :=  DPB.Find(isc_dpb_lc_ctype);
303	>	if (Param = nil) or not CharSetName2CharSetID(Param.AsString,FCharSetID) then
304	>	FCharSetID := 0;
305	>	case GetProtocol(FDatabaseName) of
306	>	TCP:       FRemoteProtocol := 'TCPv4';
307	>	Local:     FRemoteProtocol := '';
308	>	NamedPipe: FRemoteProtocol := 'Netbui';
309	>	SPX:       FRemoteProtocol := 'SPX'
310	>	end;
311	>	end;
312	>	FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
313	>	end;
314	>
315	>	constructor TFBAttachment.Create(api: TFBClientAPI; DatabaseName: AnsiString;
316	>	DPB: IDPB; RaiseExceptionOnConnectError: boolean);
317		begin
318		inherited Create;
319	<	FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
319	>	FFirebirdAPI := api.GetAPI; {Keep reference to interface}
320		FSQLDialect := 3;
321		FDatabaseName := DatabaseName;
322		FDPB := DPB;
323	+	SetLength(FUserCharSetMap,0);
324		FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
325	+	FODSMajorVersion := 0;
326	+	FODSMinorVersion := 0;
327		end;
328
329	<	function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: string;  aDPB: IDPB): string;
330	<	var CreateParams: string;
329	>	function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString;  aDPB: IDPB): AnsiString;
330	>	var CreateParams: AnsiString;
331		DPBItem: IDPBItem;
332		begin
333		CreateParams := '';
#	Line 133 | Line 336 | begin
336		begin
337		DPBItem :=  aDPB.Find(isc_dpb_user_name);
338		if DPBItem <> nil then
339	<	CreateParams += ' USER ''' + DPBItem.AsString + '''';
339	>	CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
340
341		DPBItem :=  aDPB.Find(isc_dpb_password);
342		if DPBItem <> nil then
343	<	CreateParams += ' Password ''' + DPBItem.AsString + '''';
343	>	CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
344
345		DPBItem :=  aDPB.Find(isc_dpb_page_size);
346		if DPBItem <> nil then
347	<	CreateParams += ' PAGE_SIZE ' + DPBItem.AsString;
347	>	CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
348
349		DPBItem :=  aDPB.Find(isc_dpb_lc_ctype);
350		if DPBItem <> nil then
351	<	CreateParams += ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
351	>	CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
352
353		DPBItem :=  aDPB.Find(isc_dpb_sql_dialect);
354		if DPBItem <> nil then
#	Line 167 | Line 370 | begin
370		end;
371		end;
372
373	+	{$IFDEF HASREQEX}
374	+	procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
375	+	var RegexObj: TRegExpr;
376	+	begin
377	+	FDPB := FFirebirdAPI.AllocateDPB;
378	+	RegexObj := TRegExpr.Create;
379	+	try
380	+	{extact database file spec}
381	+	RegexObj.ModifierG := false; {turn off greedy matches}
382	+	RegexObj.ModifierI := true; {case insensitive match}
383	+	RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''(.+)'' PASSWORD +''(.+)''';
384	+	if RegexObj.Exec(CreateSQL) then
385	+	begin
386	+	DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
387	+	DPB.Add(isc_dpb_password).AsString := system.copy(CreateSQL,RegexObj.MatchPos[3],RegexObj.MatchLen[3]);
388	+	end
389	+	else
390	+	begin
391	+	RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
392	+	if RegexObj.Exec(CreateSQL) then
393	+	DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
394	+	end;
395	+	finally
396	+	RegexObj.Free;
397	+	end;
398	+	if FCharSetID > 0 then
399	+	DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
400	+	DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
401	+	end;
402	+	{$ELSE}
403	+	procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
404	+	begin
405	+	FDPB := FFirebirdAPI.AllocateDPB;
406	+	if FCharSetID > 0 then
407	+	DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
408	+	DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
409	+	end;
410	+	{$ENDIF}
411	+
412		procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
413		params: array of const);
414		var i: integer;
#	Line 179 | Line 421 | begin
421		case params[i].vtype of
422		vtinteger    :
423		SQLParams[i].AsInteger := params[i].vinteger;
424	+	vtInt64:
425	+	SQLParams[i].AsInt64 := params[i].VInt64^;
426	+	{$IF declared (vtQWord)}
427	+	vtQWord:
428	+	SQLParams[i].AsInt64 := params[i].VQWord^;
429	+	{$IFEND}
430		vtboolean    :
431		SQLParams[i].AsBoolean :=  params[i].vboolean;
432		vtchar       :
#	Line 188 | Line 436 | begin
436		vtCurrency:
437		SQLParams[i].AsDouble := params[i].VCurrency^;
438		vtString     :
439	<	SQLParams[i].AsString := params[i].VString^;
439	>	SQLParams[i].AsString := strpas(PChar(params[i].VString));
440		vtPChar      :
441		SQLParams[i].AsString := strpas(params[i].VPChar);
442		vtAnsiString :
443	<	SQLParams[i].AsString := AnsiString(params[i].VAnsiString^);
443	>	SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
444		vtVariant:
445		SQLParams[i].AsVariant := params[i].VVariant^;
446	+	vtWideChar:
447	+	SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
448	+	vtPWideChar:
449	+	SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
450	+	vtWideString:
451	+	SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
452	+	vtUnicodeString:
453	+	SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
454		else
455		IBError(ibxeInvalidVariantType,[nil]);
456		end;
#	Line 207 | Line 463 | begin
463		inherited Destroy;
464		end;
465
466	+	function TFBAttachment.getFirebirdAPI: IFirebirdAPI;
467	+	begin
468	+	Result := FFirebirdAPI;
469	+	end;
470	+
471		function TFBAttachment.getDPB: IDPB;
472		begin
473		Result := FDPB;
#	Line 214 | Line 475 | end;
475
476		function TFBAttachment.AllocateBPB: IBPB;
477		begin
478	<	Result := TBPB.Create;
478	>	Result := TBPB.Create(FFirebirdAPI as TFBClientAPI);
479		end;
480
481	<	procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: string;
481	>	function TFBAttachment.AllocateDIRB: IDIRB;
482	>	begin
483	>	Result := TDIRB.Create(FFirebirdAPI as TFBClientAPI);
484	>	end;
485	>
486	>	procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
487		aSQLDialect: integer);
488		begin
489		ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
490		end;
491
492	<	procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: string);
492	>	procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
493		begin
494		ExecImmediate(transaction,sql,FSQLDialect);
495		end;
496
497	<	procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: string);
497	>	procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
498		begin
499		ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
500		end;
501
502	<	function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: string;
502	>	function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
503		SQLDialect: integer; params: array of const): IResults;
504		begin
505	<	Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,FSQLDialect,params);
505	>	Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
506		end;
507
508	<	function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: string;
508	>	function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
509		SQLDialect: integer; params: array of const): IResults;
510		begin
511		with Prepare(transaction,sql,SQLDialect) do
#	Line 249 | Line 515 | begin
515		end;
516		end;
517
518	<	function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: string;
518	>	function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
519		params: array of const): IResults;
520		begin
521		Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
522		end;
523
524	<	function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: string;
524	>	function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
525		params: array of const): IResults;
526		begin
527		with Prepare(transaction,sql,FSQLDialect) do
#	Line 265 | Line 531 | begin
531		end;
532		end;
533
534	<	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: string;
534	>	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
535		aSQLDialect: integer): IResultSet;
536		begin
537		Result := OpenCursor(transaction,sql,aSQLDialect,[]);
538		end;
539
540	<	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: string;
540	>	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
541		aSQLDialect: integer; params: array of const): IResultSet;
542		var Statement: IStatement;
543		begin
#	Line 281 | Line 547 | begin
547		Result := Statement.OpenCursor;
548		end;
549
550	<	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: string
550	>	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
551		): IResultSet;
552		begin
553		Result := OpenCursor(transaction,sql,FSQLDialect,[]);
554		end;
555
556	<	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: string;
556	>	function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
557		params: array of const): IResultSet;
558		begin
559		Result := OpenCursor(transaction,sql,FSQLDialect,params);
560		end;
561
562		function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
563	<	sql: string; aSQLDialect: integer): IResultSet;
563	>	sql: AnsiString; aSQLDialect: integer): IResultSet;
564		begin
565		Result := OpenCursor(transaction,sql,aSQLDialect,[]);
566		Result.FetchNext;
567		end;
568
569		function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
570	<	sql: string; aSQLDialect: integer; params: array of const): IResultSet;
570	>	sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
571		begin
572		Result := OpenCursor(transaction,sql,aSQLDialect,params);
573		Result.FetchNext;
574		end;
575
576	<	function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: string
576	>	function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
577		): IResultSet;
578		begin
579		Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
580		end;
581
582		function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
583	<	sql: string; params: array of const): IResultSet;
583	>	sql: AnsiString; params: array of const): IResultSet;
584		begin
585		Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
586		end;
587
588	<	function TFBAttachment.OpenCursorAtStart(sql: string): IResultSet;
588	>	function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
589		begin
590		Result := OpenCursorAtStart(sql,[]);
591		end;
592
593	<	function TFBAttachment.OpenCursorAtStart(sql: string;
593	>	function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
594		params: array of const): IResultSet;
595		begin
596		Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
597		end;
598
599	<	function TFBAttachment.Prepare(transaction: ITransaction; sql: string
599	>	function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
600		): IStatement;
601		begin
602		Result := Prepare(transaction,sql,FSQLDialect);
603		end;
604
605		function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
606	<	sql: string; GenerateParamNames: boolean): IStatement;
606	>	sql: AnsiString; GenerateParamNames: boolean; CaseSensitiveParams: boolean): IStatement;
607		begin
608	<	Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames);
608	>	Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames,CaseSensitiveParams);
609		end;
610
611	<	function TFBAttachment.GetEventHandler(Event: string): IEvents;
611	>	function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
612		var S: TStringList;
613		begin
614		S := TStringList.Create;
#	Line 359 | Line 625 | begin
625		Result := FSQLDialect;
626		end;
627
628	+	function TFBAttachment.CreateBlob(transaction: ITransaction; RelationName,
629	+	ColumnName: AnsiString; BPB: IBPB): IBlob;
630	+	begin
631	+	Result := CreateBlob(transaction,GetBlobMetaData(Transaction,RelationName,ColumnName),BPB);
632	+	end;
633	+
634	+	function TFBAttachment.OpenBlob(transaction: ITransaction; RelationName,
635	+	ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
636	+	begin
637	+	Result := OpenBlob(Transaction,
638	+	GetBlobMetaData(Transaction,RelationName,ColumnName),
639	+	BlobID,BPB);
640	+	end;
641	+
642		function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
643		BPB: IBPB): IBlob;
644		begin
645		Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
646		end;
647
648	+	function TFBAttachment.CreateArray(transaction: ITransaction; RelationName,
649	+	ColumnName: AnsiString): IArray;
650	+	begin
651	+	Result := CreateArray(transaction,GetArrayMetaData(transaction,RelationName,ColumnName));
652	+	end;
653	+
654	+	function TFBAttachment.OpenArray(transaction: ITransaction; RelationName,
655	+	ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray;
656	+	begin
657	+	Result := OpenArray(transaction,
658	+	GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
659	+	end;
660	+
661	+	function TFBAttachment.GetDBInformation(Requests: array of byte
662	+	): IDBInformation;
663	+	var ReqBuffer: PByte;
664	+	i: integer;
665	+	begin
666	+	CheckHandle;
667	+	if Length(Requests) = 1 then
668	+	Result := GetDBInformation(Requests[0])
669	+	else
670	+	begin
671	+	GetMem(ReqBuffer,Length(Requests));
672	+	try
673	+	for i := 0 to Length(Requests) - 1 do
674	+	ReqBuffer[i] := Requests[i];
675	+
676	+	Result := GetDBInfo(ReqBuffer,Length(Requests));
677	+
678	+	finally
679	+	FreeMem(ReqBuffer);
680	+	end;
681	+	end;
682	+	end;
683	+
684	+	function TFBAttachment.GetDBInformation(Request: byte): IDBInformation;
685	+	begin
686	+	CheckHandle;
687	+	Result := GetDBInfo(@Request,1);
688	+	end;
689	+
690	+	function TFBAttachment.GetDBInformation(Requests: IDIRB): IDBInformation;
691	+	begin
692	+	CheckHandle;
693	+	with Requests as TDIRB do
694	+	Result := GetDBInfo(getBuffer,getDataLength);
695	+	end;
696	+
697	+	function TFBAttachment.GetConnectString: AnsiString;
698	+	begin
699	+	Result := FDatabaseName;
700	+	end;
701	+
702	+	function TFBAttachment.GetRemoteProtocol: AnsiString;
703	+	begin
704	+	Result := FRemoteProtocol;
705	+	end;
706	+
707	+	function TFBAttachment.GetAuthenticationMethod: AnsiString;
708	+	begin
709	+	Result := FAuthMethod;
710	+	end;
711	+
712	+	function TFBAttachment.GetSecurityDatabase: AnsiString;
713	+	begin
714	+	Result := FSecDatabase;
715	+	end;
716	+
717	+	function TFBAttachment.GetODSMajorVersion: integer;
718	+	begin
719	+	Result := FODSMajorVersion;
720	+	end;
721	+
722	+	function TFBAttachment.GetODSMinorVersion: integer;
723	+	begin
724	+	Result := FODSMinorVersion;
725	+	end;
726	+
727	+	function TFBAttachment.HasDefaultCharSet: boolean;
728	+	begin
729	+	Result := FHasDefaultCharSet
730	+	end;
731	+
732	+	function TFBAttachment.GetDefaultCharSetID: integer;
733	+	begin
734	+	Result := FCharsetID;
735	+	end;
736	+
737	+	function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
738	+	var i: integer;
739	+	begin
740	+	Result := '';
741	+	if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
742	+	(CharSetMap[CharSetID].CharSetID = CharSetID) then
743	+	begin
744	+	Result := CharSetMap[CharSetID].CharSetName;
745	+	Exit;
746	+	end;
747	+
748	+	for i := 0 to Length(FUserCharSetMap) - 1 do
749	+	if FUserCharSetMap[i].CharSetID = CharSetID then
750	+	begin
751	+	Result := FUserCharSetMap[i].CharSetName;
752	+	Exit;
753	+	end;
754	+	end;
755	+
756	+	function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
757	+	var CodePage: TSystemCodePage): boolean;
758	+	var i: integer;
759	+	begin
760	+	Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
761	+	and (CharSetMap[CharSetID].CharSetID = CharSetID);
762	+	if Result then
763	+	begin
764	+	CodePage := CharSetMap[CharSetID].CodePage;
765	+	Result := true;
766	+	Exit;
767	+	end;
768	+
769	+	for i := 0 to Length(FUserCharSetMap) - 1 do
770	+	if FUserCharSetMap[i].CharSetID = CharSetID then
771	+	begin
772	+	CodePage := FUserCharSetMap[i].CodePage;
773	+	Result := true;
774	+	Exit;
775	+	end;
776	+	end;
777	+
778	+	function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
779	+	var CharSetID: integer): boolean;
780	+	var i: integer;
781	+	begin
782	+	Result := false;
783	+	for i := Low(CharSetMap) to High(CharSetMap) do
784	+	if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
785	+	begin
786	+	CharSetID := CharSetMap[i].CharSetID;
787	+	Result := true;
788	+	Exit;
789	+	end;
790	+
791	+	for i := 0 to Length(FUserCharSetMap) - 1 do
792	+	if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
793	+	begin
794	+	CharSetID := FUserCharSetMap[i].CharSetID;
795	+	Result := true;
796	+	Exit;
797	+	end;
798	+	end;
799	+
800	+	function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
801	+	var CharSetID: integer): boolean;
802	+	var i: integer;
803	+	begin
804	+	Result := false;
805	+	for i := Low(CharSetMap) to High(CharSetMap) do
806	+	if AnsiCompareText(CharSetMap[i].CharSetName, CharSetName) = 0 then
807	+	begin
808	+	CharSetID := CharSetMap[i].CharSetID;
809	+	Result := true;
810	+	Exit;
811	+	end;
812	+
813	+	for i := 0 to Length(FUserCharSetMap) - 1 do
814	+	if AnsiCompareText(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
815	+	begin
816	+	CharSetID := FUserCharSetMap[i].CharSetID;
817	+	Result := true;
818	+	Exit;
819	+	end;
820	+	end;
821	+
822	+	function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
823	+	): boolean;
824	+	var i: integer;
825	+	begin
826	+	Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
827	+	and (CharSetMap[CharSetID].CharSetID = CharSetID);
828	+	if Result then
829	+	begin
830	+	Width := CharSetMap[CharSetID].CharSetWidth;
831	+	Result := true;
832	+	Exit;
833	+	end;
834	+
835	+	for i := 0 to Length(FUserCharSetMap) - 1 do
836	+	if FUserCharSetMap[i].CharSetID = CharSetID then
837	+	begin
838	+	Width := FUserCharSetMap[i].CharSetWidth;
839	+	Result := true;
840	+	Exit;
841	+	end;
842	+	end;
843	+
844	+	const
845	+	sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
846	+	'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
847	+
848	+	procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
849	+	CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
850	+	);
851	+	var CharSets: IResultSet;
852	+	idx: integer;
853	+	begin
854	+	if CharSetName2CharSetID(CharSetName,CharSetID) then
855	+	IBError(ibxeCharacterSetExists,[CharSetName]);
856	+
857	+	CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
858	+	if CharSets.IsEof then
859	+	IBError(ibxeUnknownUserCharSet,[CharSetName]);
860	+
861	+	idx := Length(FUserCharSetMap);
862	+	SetLength(FUserCharSetMap,idx+1);
863	+	FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
864	+	FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
865	+	FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
866	+	FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
867	+	FUserCharSetMap[idx].CodePage := CodePage;
868	+	CharSetID := CharSets[0].AsInteger;
869	+	end;
870	+
871		end.
872

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