1 |
(*
|
2 |
* Firebird Interface (fbintf). The fbintf components provide a set of
|
3 |
* Pascal language bindings for the Firebird API. Although predominantly
|
4 |
* a new development they include source code taken from IBX and may be
|
5 |
* considered a derived product. This software thus also includes the copyright
|
6 |
* notice and license conditions from IBX.
|
7 |
*
|
8 |
* Except for those parts dervied from IBX, contents of this file are subject
|
9 |
* to the Initial Developer's Public License Version 1.0 (the "License"); you
|
10 |
* may not use this file except in compliance with the License. You may obtain a
|
11 |
* copy of the License here:
|
12 |
*
|
13 |
* http://www.firebirdsql.org/index.php?op=doc&id=idpl
|
14 |
*
|
15 |
* Software distributed under the License is distributed on an "AS
|
16 |
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
17 |
* implied. See the License for the specific language governing rights
|
18 |
* and limitations under the License.
|
19 |
*
|
20 |
* The Initial Developer of the Original Code is Tony Whyman.
|
21 |
*
|
22 |
* The Original Code is (C) 2016 Tony Whyman, MWA Software
|
23 |
* (http://www.mwasoftware.co.uk).
|
24 |
*
|
25 |
* All Rights Reserved.
|
26 |
*
|
27 |
* Contributor(s): ______________________________________.
|
28 |
*
|
29 |
*)
|
30 |
{************************************************************************}
|
31 |
{ }
|
32 |
{ Borland Delphi Visual Component Library }
|
33 |
{ InterBase Express core components }
|
34 |
{ }
|
35 |
{ Copyright (c) 1998-2000 Inprise Corporation }
|
36 |
{ }
|
37 |
{ InterBase Express is based in part on the product }
|
38 |
{ Free IB Components, written by Gregory H. Deatz for }
|
39 |
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
|
40 |
{ Free IB Components is used under license. }
|
41 |
{ }
|
42 |
{ The contents of this file are subject to the InterBase }
|
43 |
{ Public License Version 1.0 (the "License"); you may not }
|
44 |
{ use this file except in compliance with the License. You }
|
45 |
{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
|
46 |
{ Software distributed under the License is distributed on }
|
47 |
{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
|
48 |
{ express or implied. See the License for the specific language }
|
49 |
{ governing rights and limitations under the License. }
|
50 |
{ The Original Code was created by InterBase Software Corporation }
|
51 |
{ and its successors. }
|
52 |
{ Portions created by Inprise Corporation are Copyright (C) Inprise }
|
53 |
{ Corporation. All Rights Reserved. }
|
54 |
{ Contributor(s): Jeff Overcash }
|
55 |
{ }
|
56 |
{ IBX For Lazarus (Firebird Express) }
|
57 |
{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
|
58 |
{ Portions created by MWA Software are copyright McCallum Whyman }
|
59 |
{ Associates Ltd 2011 - 2015 }
|
60 |
{ }
|
61 |
{************************************************************************}
|
62 |
unit FBClientAPI;
|
63 |
{$IFDEF MSWINDOWS}
|
64 |
{$DEFINE WINDOWS}
|
65 |
{$ENDIF}
|
66 |
|
67 |
{$IFDEF FPC}
|
68 |
{$mode delphi}
|
69 |
{$codepage UTF8}
|
70 |
{$interfaces COM}
|
71 |
{$ENDIF}
|
72 |
|
73 |
interface
|
74 |
|
75 |
uses
|
76 |
Classes,
|
77 |
{$IFDEF WINDOWS}Windows, {$ENDIF}
|
78 |
{$IFDEF FPC} Dynlibs, {$ENDIF}
|
79 |
IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals;
|
80 |
|
81 |
{For Linux see result of GetFirebirdLibList method}
|
82 |
{$IFDEF DARWIN}
|
83 |
const
|
84 |
FIREBIRD_SO2 = 'libfbclient.dylib';
|
85 |
{$ENDIF}
|
86 |
{$IFDEF WINDOWS}
|
87 |
const
|
88 |
IBASE_DLL = 'gds32.dll';
|
89 |
FIREBIRD_CLIENT = 'fbclient.dll'; {do not localize}
|
90 |
FIREBIRD_EMBEDDED = 'fbembed.dll';
|
91 |
{$ENDIF}
|
92 |
|
93 |
{$IFNDEF FPC}
|
94 |
type
|
95 |
TLibHandle = THandle;
|
96 |
|
97 |
const
|
98 |
NilHandle = 0;
|
99 |
DirectorySeparator = '\';
|
100 |
{$ENDIF}
|
101 |
|
102 |
type
|
103 |
TStatusVector = array[0..19] of NativeInt;
|
104 |
PStatusVector = ^TStatusVector;
|
105 |
|
106 |
TFBClientAPI = class;
|
107 |
|
108 |
{ TFBStatus }
|
109 |
|
110 |
TFBStatus = class(TFBInterfacedObject)
|
111 |
private
|
112 |
FIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
113 |
protected
|
114 |
FOwner: TFBClientAPI;
|
115 |
public
|
116 |
constructor Create(aOwner: TFBClientAPI);
|
117 |
function StatusVector: PStatusVector; virtual; abstract;
|
118 |
|
119 |
{IStatus}
|
120 |
function GetIBErrorCode: Long;
|
121 |
function Getsqlcode: Long;
|
122 |
function GetMessage: AnsiString;
|
123 |
function CheckStatusVector(ErrorCodes: array of TFBStatusCode): Boolean;
|
124 |
function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
125 |
procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
|
126 |
end;
|
127 |
|
128 |
{ TFBClientAPI }
|
129 |
|
130 |
TFBClientAPI = class(TFBInterfacedObject)
|
131 |
private
|
132 |
FOwnsIBLibrary: boolean;
|
133 |
class var FIBCS: TRTLCriticalSection;
|
134 |
procedure LoadIBLibrary;
|
135 |
protected
|
136 |
class var FFBLibraryName: string;
|
137 |
class var IBLibrary: TLibHandle;
|
138 |
{$IFDEF WINDOWS}
|
139 |
class var FFBLibraryPath: string;
|
140 |
{$ENDIF}
|
141 |
function GetProcAddr(ProcName: PAnsiChar): Pointer;
|
142 |
function GetOverrideLibName: string;
|
143 |
{$IFDEF UNIX}
|
144 |
function GetFirebirdLibList: string; virtual; abstract;
|
145 |
{$ENDIF}
|
146 |
procedure LoadInterface; virtual;
|
147 |
public
|
148 |
{Taken from legacy API}
|
149 |
isc_sqlcode: Tisc_sqlcode;
|
150 |
isc_sql_interprete: Tisc_sql_interprete;
|
151 |
isc_interprete: Tisc_interprete;
|
152 |
isc_event_counts: Tisc_event_counts;
|
153 |
isc_event_block: Tisc_event_block;
|
154 |
isc_free: Tisc_free;
|
155 |
|
156 |
constructor Create;
|
157 |
destructor Destroy; override;
|
158 |
procedure IBAlloc(var P; OldSize, NewSize: Integer);
|
159 |
procedure IBDataBaseError;
|
160 |
procedure SetupEnvironment;
|
161 |
|
162 |
{Encode/Decode}
|
163 |
procedure EncodeInteger(aValue: integer; len: integer; buffer: PByte);
|
164 |
function DecodeInteger(bufptr: PByte; len: short): integer; virtual; abstract;
|
165 |
procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte); virtual; abstract;
|
166 |
function SQLDecodeDate(byfptr: PByte): TDateTime; virtual; abstract;
|
167 |
procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte); virtual; abstract;
|
168 |
function SQLDecodeTime(bufptr: PByte): TDateTime; virtual; abstract;
|
169 |
procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); virtual; abstract;
|
170 |
function SQLDecodeDateTime(bufptr: PByte): TDateTime; virtual; abstract;
|
171 |
|
172 |
|
173 |
{IFirebirdAPI}
|
174 |
function GetStatus: IStatus; virtual; abstract;
|
175 |
function IsLibraryLoaded: boolean;
|
176 |
function IsEmbeddedServer: boolean; virtual; abstract;
|
177 |
function GetLibraryName: string;
|
178 |
function GetCharsetName(CharSetID: integer): AnsiString;
|
179 |
function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
|
180 |
function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
|
181 |
function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
|
182 |
function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
|
183 |
end;
|
184 |
|
185 |
var FirebirdClientAPI: TFBClientAPI = nil;
|
186 |
|
187 |
implementation
|
188 |
|
189 |
uses IBUtils, Registry, {$IFDEF Unix} initc, {$ENDIF}
|
190 |
{$IFDEF FPC}
|
191 |
{$IFDEF WINDOWS }
|
192 |
WinDirs,
|
193 |
{$ENDIF}
|
194 |
{$ELSE}
|
195 |
ShlObj,
|
196 |
{$ENDIF}
|
197 |
SysUtils;
|
198 |
|
199 |
{$IFDEF UNIX}
|
200 |
{$I 'include/uloadlibrary.inc'}
|
201 |
{$ELSE}
|
202 |
{$I 'include/wloadlibrary.inc'}
|
203 |
{$ENDIF}
|
204 |
|
205 |
type
|
206 |
TCharsetMap = record
|
207 |
CharsetID: integer;
|
208 |
CharSetName: AnsiString;
|
209 |
CharSetWidth: integer;
|
210 |
CodePage: TSystemCodePage;
|
211 |
end;
|
212 |
|
213 |
const
|
214 |
CharSetMap: array [0..69] of TCharsetMap = (
|
215 |
(CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP),
|
216 |
(CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE),
|
217 |
(CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII),
|
218 |
(CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8),
|
219 |
(CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8),
|
220 |
(CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932),
|
221 |
(CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932),
|
222 |
(CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
223 |
(CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
224 |
(CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737),
|
225 |
(CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437),
|
226 |
(CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850),
|
227 |
(CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865),
|
228 |
(CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860),
|
229 |
(CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863),
|
230 |
(CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775),
|
231 |
(CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858),
|
232 |
(CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862),
|
233 |
(CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864),
|
234 |
(CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE),
|
235 |
(CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
236 |
(CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591),
|
237 |
(CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592),
|
238 |
(CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593),
|
239 |
(CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
240 |
(CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
241 |
(CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
242 |
(CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
243 |
(CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
244 |
(CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
245 |
(CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
246 |
(CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
247 |
(CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
248 |
(CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
249 |
(CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594),
|
250 |
(CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595),
|
251 |
(CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596),
|
252 |
(CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597),
|
253 |
(CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598),
|
254 |
(CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599),
|
255 |
(CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603),
|
256 |
(CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
257 |
(CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
258 |
(CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
259 |
(CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949),
|
260 |
(CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852),
|
261 |
(CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857),
|
262 |
(CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861),
|
263 |
(CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866),
|
264 |
(CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869),
|
265 |
(CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251),
|
266 |
(CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250),
|
267 |
(CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251),
|
268 |
(CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252),
|
269 |
(CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253),
|
270 |
(CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254),
|
271 |
(CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950),
|
272 |
(CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936),
|
273 |
(CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255),
|
274 |
(CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256),
|
275 |
(CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257),
|
276 |
(CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
277 |
(CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
|
278 |
(CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866),
|
279 |
(CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866),
|
280 |
(CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258),
|
281 |
(CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874),
|
282 |
(CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936),
|
283 |
(CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943),
|
284 |
(CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936)
|
285 |
);
|
286 |
|
287 |
{$IFDEF Unix}
|
288 |
{SetEnvironmentVariable doesn't exist so we have to use C Library}
|
289 |
function setenv(name:Pchar; value:Pchar; replace:integer):integer;cdecl;external clib name 'setenv';
|
290 |
function unsetenv(name:Pchar):integer;cdecl;external clib name 'unsetenv';
|
291 |
function SetEnvironmentVariable(name:PAnsiChar; value:PAnsiChar):boolean;
|
292 |
// Set environment variable; if empty string given, remove it.
|
293 |
begin
|
294 |
result:=false; //assume failure
|
295 |
if value = '' then
|
296 |
begin
|
297 |
// Assume user wants to remove variable.
|
298 |
if unsetenv(name)=0 then result:=true;
|
299 |
end
|
300 |
else
|
301 |
begin
|
302 |
// Non empty so set the variable
|
303 |
if setenv(name, value, 1)=0 then result:=true;
|
304 |
end;
|
305 |
end;
|
306 |
{$ENDIF}
|
307 |
|
308 |
{ TFBClientAPI }
|
309 |
|
310 |
constructor TFBClientAPI.Create;
|
311 |
begin
|
312 |
inherited Create;
|
313 |
LoadIBLibrary;
|
314 |
if (IBLibrary <> NilHandle) then
|
315 |
begin
|
316 |
SetupEnvironment;
|
317 |
LoadInterface;
|
318 |
end;
|
319 |
FirebirdClientAPI := self;
|
320 |
end;
|
321 |
|
322 |
destructor TFBClientAPI.Destroy;
|
323 |
begin
|
324 |
FirebirdClientAPI := nil;
|
325 |
if FOwnsIBLibrary and (IBLibrary <> NilHandle) then
|
326 |
FreeLibrary(IBLibrary);
|
327 |
IBLibrary := NilHandle;
|
328 |
inherited Destroy;
|
329 |
end;
|
330 |
|
331 |
procedure TFBClientAPI.IBAlloc(var P; OldSize, NewSize: Integer);
|
332 |
var
|
333 |
i: Integer;
|
334 |
begin
|
335 |
ReallocMem(Pointer(P), NewSize);
|
336 |
for i := OldSize to NewSize - 1 do PAnsiChar(P)[i] := #0;
|
337 |
end;
|
338 |
|
339 |
procedure TFBClientAPI.IBDataBaseError;
|
340 |
begin
|
341 |
raise EIBInterBaseError.Create(GetStatus);
|
342 |
end;
|
343 |
|
344 |
{Under Unixes, if using an embedded server then set up local TMP and LOCK Directories}
|
345 |
|
346 |
procedure TFBClientAPI.SetupEnvironment;
|
347 |
var TmpDir: AnsiString;
|
348 |
begin
|
349 |
{$IFDEF UNIX}
|
350 |
TmpDir := GetTempDir +
|
351 |
DirectorySeparator + 'firebird_' + sysutils.GetEnvironmentVariable('USER');
|
352 |
if sysutils.GetEnvironmentVariable('FIREBIRD_TMP') = '' then
|
353 |
begin
|
354 |
if not DirectoryExists(tmpDir) then
|
355 |
mkdir(tmpDir);
|
356 |
SetEnvironmentVariable('FIREBIRD_TMP',PAnsiChar(TmpDir));
|
357 |
end;
|
358 |
if sysutils.GetEnvironmentVariable('FIREBIRD_LOCK') = '' then
|
359 |
begin
|
360 |
if not DirectoryExists(tmpDir) then
|
361 |
mkdir(tmpDir);
|
362 |
SetEnvironmentVariable('FIREBIRD_LOCK',PAnsiChar(TmpDir));
|
363 |
end;
|
364 |
{$ENDIF}
|
365 |
end;
|
366 |
|
367 |
procedure TFBClientAPI.EncodeInteger(aValue: integer; len: integer; buffer: PByte);
|
368 |
begin
|
369 |
while len > 0 do
|
370 |
begin
|
371 |
buffer^ := aValue and $FF;
|
372 |
Inc(buffer);
|
373 |
Dec(len);
|
374 |
aValue := aValue shr 8;
|
375 |
end;
|
376 |
end;
|
377 |
|
378 |
function TFBClientAPI.IsLibraryLoaded: boolean;
|
379 |
begin
|
380 |
Result := IBLibrary <> NilHandle;
|
381 |
end;
|
382 |
|
383 |
function TFBClientAPI.GetProcAddr(ProcName: PAnsiChar): Pointer;
|
384 |
begin
|
385 |
Result := GetProcAddress(IBLibrary, ProcName);
|
386 |
if not Assigned(Result) then
|
387 |
raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
|
388 |
end;
|
389 |
|
390 |
function TFBClientAPI.GetOverrideLibName: string;
|
391 |
begin
|
392 |
Result := '';
|
393 |
if AllowUseOfFBLIB then
|
394 |
Result := GetEnvironmentVariable('FBLIB');
|
395 |
if Result = '' then
|
396 |
begin
|
397 |
if assigned(OnGetLibraryName) then
|
398 |
OnGetLibraryName(Result)
|
399 |
end;
|
400 |
end;
|
401 |
|
402 |
procedure TFBClientAPI.LoadInterface;
|
403 |
begin
|
404 |
isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
|
405 |
isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
|
406 |
isc_interprete := GetProcAddr('isc_interprete'); {do not localize}
|
407 |
isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
|
408 |
isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
|
409 |
isc_free := GetProcAddr('isc_free'); {do not localize}
|
410 |
end;
|
411 |
|
412 |
function TFBClientAPI.GetLibraryName: string;
|
413 |
begin
|
414 |
Result := FFBLibraryName;
|
415 |
end;
|
416 |
|
417 |
function TFBClientAPI.GetCharsetName(CharSetID: integer): AnsiString;
|
418 |
begin
|
419 |
Result := '';
|
420 |
if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
|
421 |
(CharSetMap[CharSetID].CharSetID = CharSetID) then
|
422 |
begin
|
423 |
Result := CharSetMap[CharSetID].CharSetName;
|
424 |
Exit;
|
425 |
end;
|
426 |
end;
|
427 |
|
428 |
function TFBClientAPI.CharSetID2CodePage(CharSetID: integer;
|
429 |
var CodePage: TSystemCodePage): boolean;
|
430 |
begin
|
431 |
Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
|
432 |
and (CharSetMap[CharSetID].CharSetID = CharSetID);
|
433 |
if Result then
|
434 |
begin
|
435 |
CodePage := CharSetMap[CharSetID].CodePage;
|
436 |
Result := true;
|
437 |
Exit;
|
438 |
end;
|
439 |
end;
|
440 |
|
441 |
function TFBClientAPI.CodePage2CharSetID(CodePage: TSystemCodePage;
|
442 |
var CharSetID: integer): boolean;
|
443 |
var i: integer;
|
444 |
begin
|
445 |
Result := false;
|
446 |
for i := Low(CharSetMap) to High(CharSetMap) do
|
447 |
if CharSetMap[i].CodePage = CodePage then
|
448 |
begin
|
449 |
CharSetID := CharSetMap[i].CharSetID;
|
450 |
Result := true;
|
451 |
Exit;
|
452 |
end;
|
453 |
end;
|
454 |
|
455 |
function TFBClientAPI.CharSetName2CharSetID(CharSetName: AnsiString;
|
456 |
var CharSetID: integer): boolean;
|
457 |
var i: integer;
|
458 |
begin
|
459 |
Result := false;
|
460 |
for i := Low(CharSetMap) to High(CharSetMap) do
|
461 |
if AnsiCompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
|
462 |
begin
|
463 |
CharSetID := CharSetMap[i].CharSetID;
|
464 |
Result := true;
|
465 |
Exit;
|
466 |
end;
|
467 |
end;
|
468 |
|
469 |
function TFBClientAPI.CharSetWidth(CharSetID: integer; var Width: integer
|
470 |
): boolean;
|
471 |
begin
|
472 |
Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
|
473 |
and (CharSetMap[CharSetID].CharSetID = CharSetID);
|
474 |
if Result then
|
475 |
begin
|
476 |
Width := CharSetMap[CharSetID].CharSetWidth;
|
477 |
Result := true;
|
478 |
Exit;
|
479 |
end;
|
480 |
end;
|
481 |
|
482 |
const
|
483 |
IBLocalBufferLength = 512;
|
484 |
IBBigLocalBufferLength = IBLocalBufferLength * 2;
|
485 |
IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
|
486 |
|
487 |
{ TFBStatus }
|
488 |
|
489 |
constructor TFBStatus.Create(aOwner: TFBClientAPI);
|
490 |
begin
|
491 |
inherited Create;
|
492 |
FOwner := aOwner;
|
493 |
FIBDataBaseErrorMessages := [ShowSQLMessage, ShowIBMessage];
|
494 |
end;
|
495 |
|
496 |
function TFBStatus.GetIBErrorCode: Long;
|
497 |
begin
|
498 |
Result := StatusVector^[1];
|
499 |
end;
|
500 |
|
501 |
function TFBStatus.Getsqlcode: Long;
|
502 |
begin
|
503 |
with FOwner do
|
504 |
Result := isc_sqlcode(PISC_STATUS(StatusVector));
|
505 |
end;
|
506 |
|
507 |
function TFBStatus.GetMessage: AnsiString;
|
508 |
var local_buffer: array[0..IBHugeLocalBufferLength - 1] of AnsiChar;
|
509 |
IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
510 |
sqlcode: Long;
|
511 |
psb: PStatusVector;
|
512 |
begin
|
513 |
Result := '';
|
514 |
IBDataBaseErrorMessages := FIBDataBaseErrorMessages;
|
515 |
sqlcode := Getsqlcode;
|
516 |
if (ShowSQLCode in IBDataBaseErrorMessages) then
|
517 |
Result := Result + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
|
518 |
|
519 |
Exclude(IBDataBaseErrorMessages, ShowSQLMessage);
|
520 |
if (ShowSQLMessage in IBDataBaseErrorMessages) then
|
521 |
begin
|
522 |
with FOwner do
|
523 |
isc_sql_interprete(sqlcode, local_buffer, IBLocalBufferLength);
|
524 |
if (ShowSQLCode in FIBDataBaseErrorMessages) then
|
525 |
Result := Result + CRLF;
|
526 |
Result := Result + strpas(local_buffer);
|
527 |
end;
|
528 |
|
529 |
if (ShowIBMessage in IBDataBaseErrorMessages) then
|
530 |
begin
|
531 |
if (ShowSQLCode in IBDataBaseErrorMessages) or
|
532 |
(ShowSQLMessage in IBDataBaseErrorMessages) then
|
533 |
Result := Result + CRLF;
|
534 |
psb := StatusVector;
|
535 |
with FOwner do
|
536 |
while (isc_interprete(@local_buffer, @psb) > 0) do
|
537 |
begin
|
538 |
if (Result <> '') and (Result[Length(Result)] <> LF) then
|
539 |
Result := Result + CRLF;
|
540 |
Result := Result + strpas(local_buffer);
|
541 |
end;
|
542 |
end;
|
543 |
if (Result <> '') and (Result[Length(Result)] = '.') then
|
544 |
Delete(Result, Length(Result), 1);
|
545 |
end;
|
546 |
|
547 |
function TFBStatus.CheckStatusVector(ErrorCodes: array of TFBStatusCode
|
548 |
): Boolean;
|
549 |
var
|
550 |
p: PISC_STATUS;
|
551 |
i: Integer;
|
552 |
procedure NextP(i: Integer);
|
553 |
begin
|
554 |
p := PISC_STATUS(PAnsiChar(p) + (i * SizeOf(ISC_STATUS)));
|
555 |
end;
|
556 |
begin
|
557 |
p := PISC_STATUS(StatusVector);
|
558 |
result := False;
|
559 |
while (p^ <> 0) and (not result) do
|
560 |
case p^ of
|
561 |
3: NextP(3);
|
562 |
1, 4:
|
563 |
begin
|
564 |
NextP(1);
|
565 |
i := 0;
|
566 |
while (i <= High(ErrorCodes)) and (not result) do
|
567 |
begin
|
568 |
result := p^ = ErrorCodes[i];
|
569 |
Inc(i);
|
570 |
end;
|
571 |
NextP(1);
|
572 |
end;
|
573 |
else
|
574 |
NextP(2);
|
575 |
end;
|
576 |
end;
|
577 |
|
578 |
function TFBStatus.GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
579 |
begin
|
580 |
EnterCriticalSection(TFBClientAPI.FIBCS);
|
581 |
try
|
582 |
result := FIBDataBaseErrorMessages;
|
583 |
finally
|
584 |
LeaveCriticalSection(TFBClientAPI.FIBCS);
|
585 |
end;
|
586 |
end;
|
587 |
|
588 |
procedure TFBStatus.SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
|
589 |
begin
|
590 |
EnterCriticalSection(TFBClientAPI.FIBCS);
|
591 |
try
|
592 |
FIBDataBaseErrorMessages := Value;
|
593 |
finally
|
594 |
LeaveCriticalSection(TFBClientAPI.FIBCS);
|
595 |
end;
|
596 |
end;
|
597 |
initialization
|
598 |
TFBClientAPI.IBLibrary := NilHandle;
|
599 |
{$IFNDEF FPC}
|
600 |
InitializeCriticalSection(TFBClientAPI.FIBCS);
|
601 |
{$ELSE}
|
602 |
InitCriticalSection(TFBClientAPI.FIBCS);
|
603 |
{$ENDIF}
|
604 |
|
605 |
finalization
|
606 |
{$IFNDEF FPC}
|
607 |
DeleteCriticalSection(TFBClientAPI.FIBCS);
|
608 |
{$ELSE}
|
609 |
DoneCriticalSection(TFBClientAPI.FIBCS);
|
610 |
{$ENDIF}
|
611 |
if TFBClientAPI.IBLibrary <> NilHandle then
|
612 |
begin
|
613 |
FreeLibrary(TFBClientAPI.IBLibrary);
|
614 |
TFBClientAPI.IBLibrary := NilHandle;
|
615 |
TFBClientAPI.FFBLibraryName := '';
|
616 |
end;
|
617 |
|
618 |
end.
|
619 |
|