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HGM.SQLite.Wrapper.pas
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unit HGM.SQLite.Wrapper;
{$IFDEF FPC}
{$MODE DELPHI}
{$H+} (* use AnsiString *)
{$PACKENUM 4} (* use 4-byte enums *)
{$PACKRECORDS C} (* C/C++-compatible record packing *)
{$ELSE}
{$MINENUMSIZE 4} (* use 4-byte enums *)
{$ENDIF}
interface
uses
System.SysUtils, Winapi.Windows;
const
SQLiteDefaultDLL = 'sqlite3.dll';
//sqlite3ex - áèáëèîòåêà ñ AES-256 øèôðîâàíèåì. Ìîæíî èñïîëüçîâàòü ñòàíäàðòíóþ, èçìåíèâ ýòó êîíñòàíòó
//Âîçâðàùàåìûå çíà÷åíèÿ äëÿ sqlite3_exec() è sqlite3_step()
const
SQLITE_OK = 0; // Successful result
(* beginning-of-error-codes *)
SQLITE_ERROR = 1; // SQL error or missing database
SQLITE_INTERNAL = 2; // An internal logic error in SQLite
SQLITE_PERM = 3; // Access permission denied
SQLITE_ABORT = 4; // Callback routine requested an abort
SQLITE_BUSY = 5; // The database file is locked
SQLITE_LOCKED = 6; // A table in the database is locked
SQLITE_NOMEM = 7; // A malloc() failed
SQLITE_READONLY = 8; // Attempt to write a readonly database
SQLITE_INTERRUPT = 9; // Operation terminated by sqlite3_interrupt()
SQLITE_IOERR = 10; // Some kind of disk I/O error occurred
SQLITE_CORRUPT = 11; // The database disk image is malformed
SQLITE_NOTFOUND = 12; // (Internal Only) Table or record not found
SQLITE_FULL = 13; // Insertion failed because database is full
SQLITE_CANTOPEN = 14; // Unable to open the database file
SQLITE_PROTOCOL = 15; // Database lock protocol error
SQLITE_EMPTY = 16; // Database is empty
SQLITE_SCHEMA = 17; // The database schema changed
SQLITE_TOOBIG = 18; // Too much data for one row of a table
SQLITE_CONSTRAINT = 19; // Abort due to contraint violation
SQLITE_MISMATCH = 20; // Data type mismatch
SQLITE_MISUSE = 21; // Library used incorrectly
SQLITE_NOLFS = 22; // Uses OS features not supported on host
SQLITE_AUTH = 23; // Authorization denied
SQLITE_FORMAT = 24; // Auxiliary database format error
SQLITE_RANGE = 25; // 2nd parameter to sqlite3_bind out of range
SQLITE_NOTADB = 26; // File opened that is not a database file
SQLITE_ROW = 100; // sqlite3_step() has another row ready
SQLITE_DONE = 101; // sqlite3_step() has finished executing
//DATATYPES
SQLITE_INTEGER = 1;
SQLITE_FLOAT = 2;
SQLITE_TEXT = 3;
SQLITE_BLOB = 4;
SQLITE_NULL = 5;
//
SQLITE_INTEGER_STR = 'INTEGER';
SQLITE_BOOLEAN_STR = 'BOOLEAN';
SQLITE_FLOAT_STR = 'FLOAT';
SQLITE_DOUBLE_STR = 'DOUBLE';
SQLITE_NUMERIC_STR = 'NUMERIC';
SQLITE_REAL_STR = 'REAL';
SQLITE_TEXT_STR = 'TEXT';
SQLITE_BLOB_STR = 'BLOB';
SQLITE_NULL_STR = '';
//
SQLITE_UTF8 = 1;
SQLITE_UTF16 = 2;
SQLITE_UTF16BE = 3;
SQLITE_UTF16LE = 4;
SQLITE_ANY = 5;
SQLITE_STATIC = Pointer(0);
SQLITE_TRANSIENT = Pointer(-1);
type
ESQLiteInitException = class(Exception);
TSQLiteBackup = Pointer;
TSQLiteDB = Pointer;
TSQLiteResult = ^PAnsiChar;
TSQLiteStmt = Pointer;
PPAnsiCharArray = ^TPAnsiCharArray;
TPAnsiCharArray = array[0..(MaxInt div SizeOf(PAnsiChar)) - 1] of PAnsiChar;
type
TSQLite3Destructor = procedure(Ptr: Pointer); cdecl;
TSQLite3_Bind_Blob = function(hStmt: TSQLiteStmt; ParamNum: integer; ptrData: Pointer; numBytes: integer; ptrDestructor: TSQLite3Destructor): integer; cdecl;
TSQLite3_Bind_Double = function(hStmt: TSQLiteStmt; ParamNum: integer; Data: Double): integer; cdecl;
TSQLite3_Bind_Int = function(hStmt: TSQLiteStmt; ParamNum: integer; Data: integer): integer; cdecl;
TSQLite3_Bind_Int64 = function(hStmt: TSQLiteStmt; ParamNum: integer; Data: int64): integer; cdecl;
TSQLite3_Bind_Null = function(hStmt: TSQLiteStmt; ParamNum: integer): integer; cdecl;
TSQLite3_Bind_Parameter_Index = function(hStmt: TSQLiteStmt; zName: PAnsiChar): integer; cdecl;
TSQLite3_Bind_Text = function(hStmt: TSQLiteStmt; ParamNum: integer; Text: PAnsiChar; numBytes: integer; ptrDestructor: TSQLite3Destructor): integer; cdecl;
TSQLite3_Enable_Shared_Cache = function(Value: integer): integer; cdecl;
TxFunc = procedure(Context: Pointer; Arg: Integer; Args: PPointerArray); cdecl;
TxStep = procedure(Context: Pointer; Arg: Integer; Args: PPointerArray); cdecl;
TxFinal = procedure(Context: Pointer); cdecl;
TSQLiteExecCallback = function(UserData: Pointer; NumCols: integer; ColValues: PPAnsiCharArray; ColNames: PPAnsiCharArray): integer; cdecl;
TSQLiteBusyHandlerCallback = function(UserData: Pointer; P2: integer): integer; cdecl;
TCollateCompare = function(UserData: Pointer; Buf1Len: integer; Buf1: Pointer; Buf2Len: integer; Buf2: Pointer): integer; cdecl;
TSQLite3_Backup_Finish = function(hBackup: TSQLiteBackup): integer; cdecl;
TSQLite3_Backup_Init = function(DestDB: TSQLiteDB; DestDbName: PAnsiChar; SourceDb: TSQLiteDB; SourceDbName: PAnsiChar): TSQLiteBackup; cdecl;
TSQLite3_Backup_Pagecount = function(hBackup: TSQLiteBackup): integer; cdecl;
TSQLite3_Backup_Remaining = function(hBackup: TSQLiteBackup): integer; cdecl;
TSQLite3_Backup_Step = function(hBackup: TSQLiteBackup; nPage: integer): integer; cdecl;
TSQLite3_Changes = function(DB: TSQLiteDB): integer; cdecl;
TSQLite3_Close = function(DB: TSQLiteDB): integer; cdecl;
TSQLite3_ColumnBlob = function(hStmt: TSQLiteStmt; ColNum: integer): Pointer; cdecl;
TSQLite3_ColumnBytes = function(hStmt: TSQLiteStmt; ColNum: integer): integer; cdecl;
TSQLite3_ColumnCount = function(hStmt: TSQLiteStmt): integer; cdecl;
TSQLite3_ColumnDeclType = function(hStmt: TSQLiteStmt; ColNum: integer): PAnsiChar; cdecl;
TSQLite3_ColumnDouble = function(hStmt: TSQLiteStmt; ColNum: integer): Double; cdecl;
TSQLite3_ColumnInt = function(hStmt: TSQLiteStmt; ColNum: integer): integer; cdecl;
TSQLite3_ColumnInt64 = function(hStmt: TSQLiteStmt; ColNum: integer): Int64; cdecl;
TSQLite3_ColumnName = function(hStmt: TSQLiteStmt; ColNum: integer): PAnsiChar; cdecl;
TSQLite3_ColumnText = function(hStmt: TSQLiteStmt; ColNum: integer): PAnsiChar; cdecl;
TSQLite3_ColumnType = function(hStmt: TSQLiteStmt; ColNum: integer): Integer; cdecl;
TSQLite3_Complete = function(P: PAnsiChar): Boolean; cdecl;
TSQLite3_DataCount = function(hStmt: TSQLiteStmt): integer; cdecl;
TSQLite3_ErrCode = function(DB: TSQLiteDB): integer; cdecl;
TSQLite3_ErrMsg = function(DB: TSQLiteDB): PAnsiChar; cdecl;
TSQLite3_Exec = function(DB: TSQLiteDB; SQLStatement: PAnsiChar; CallbackPtr: TSQLiteExecCallback; UserData: Pointer; var ErrMsg: PAnsiChar): integer; cdecl;
TSQLite3_Finalize = function(hStmt: TSQLiteStmt): integer; cdecl;
TSQLite3_GetTable = function(DB: TSQLiteDB; SQLStatement: PAnsiChar; var ResultPtr: TSQLiteResult; var RowCount: Cardinal; var ColCount: Cardinal; var ErrMsg: PAnsiChar): integer; cdecl;
TSQLite3_LastInsertRowID = function(DB: TSQLiteDB): int64; cdecl;
TSQLite3_Open = function(filename: PAnsiChar; var DB: TSQLiteDB): integer; cdecl;
TSQLite3_Prepare = function(DB: TSQLiteDB; SQLStatement: PAnsiChar; nBytes: integer; var hStmt: TSQLiteStmt; var pzTail: PAnsiChar): integer; cdecl;
TSQLite3_Prepare_v2 = function(DB: TSQLiteDB; SQLStatement: PAnsiChar; nBytes: integer; var hStmt: TSQLiteStmt; var pzTail: PAnsiChar): integer; cdecl;
TSQLite3_Reset = function(hStmt: TSQLiteStmt): integer; cdecl;
TSQLite3_Step = function(hStmt: TSQLiteStmt): integer; cdecl;
TSQLite3_TotalChanges = function(DB: TSQLiteDB): integer; cdecl;
TSQLite3_Version = function(): PAnsiChar; cdecl;
TSQLite3_BusyHandler = procedure(DB: TSQLiteDB; CallbackPtr: TSQLiteBusyHandlerCallback; UserData: Pointer); cdecl;
TSQLite3_BusyTimeout = procedure(DB: TSQLiteDB; TimeOut: integer); cdecl;
TSQlite3_Free = procedure(P: PAnsiChar); cdecl;
TSQLite3_FreeTable = procedure(Table: TSQLiteResult); cdecl;
TSQLite3_Interrupt = procedure(DB: TSQLiteDB); cdecl;
TSQLite3_Create_Function = function(DB: TSQLiteDB; zFunctionName: MarshaledString; nArg, eTextRep: Integer; pApp: Pointer; xFunc: TxFunc; xStep: TxStep; xFinal: TxFinal): Integer; cdecl;
TSQLite3_Value_Text = function(Value: Pointer): MarshaledAString; cdecl;
TSQLite3_Result_Text = procedure(Context: Pointer; Data: MarshaledAString; Size: Integer; Proc: TSQLite3Destructor); cdecl;
TSQLite3_Result_Int = procedure(Context: Pointer; Data: Integer); cdecl;
TSQLite3_Create_Collation = function(DB: TSQLiteDB; Name: PAnsiChar; eTextRep: integer; UserData: Pointer; xCompare: TCollateCompare): integer; cdecl;
//sqlite3_create_function(Db, 'UPPER', 1, SQLITE_ANY, nil, @SQLiteUpper, nil, nil);
////
//Â çàïðîñàõ SQL, ââîäèìûõ â sqlite3_prepare() è sqlite3_prepare_v2(),
//îäèí èëè íåñêîëüêî ëèòåðàëîâ ìîãóò áûòü çàìåíåíû øàáëîíîì "?" Èëè ":N:" ãäå N - öåëîå ÷èñëî.
//Ýòè çíà÷åíèÿ áûòü óñòàíîâëåíû ñ ïîìîùüþ ìåòîäîâ sqlite3_bind_*.
//
// êàæäîì ñëó÷àå ïåðâûì ïàðàìåòðîì ÿâëÿåòñÿ óêàçàòåëü íà ñòðóêòóðó sqlite3_stmt, âîçâðàùåííóþ èç sqlite3_prepare().
//Âòîðîé ïàðàìåòð - ýòî èíäåêñ ïîäñòàíîâî÷íîãî çíàêà.
//Ïåðâûé "?" Èìååò èíäåêñ 1. ":N:" ïîäñòàíîâî÷íûå çíàêè èñïîëüçóþò èíäåêñ N.
////
//Ïÿòûé ïàðàìåòð äëÿ sqlite3_bind_blob(), sqlite3_bind_text() ÿâëÿåòñÿ äåñòðóêòîðîì,
//èñïîëüçóåìûì äëÿ óäàëåíèÿ BLOB èëè text ïîñëå çàâåðøåíèÿ ðàáîòû SQLite ñ íèì.
//Åñëè ïÿòûé àðãóìåíò ïðåäñòàâëÿåò ñîáîé ñïåöèàëüíîå çíà÷åíèå SQLITE_STATIC,
//áèáëèîòåêà ïðåäïîëàãàåò, ÷òî èíôîðìàöèÿ íàõîäèòñÿ â ñòàòè÷åñêîì,
//íåóïðàâëÿåìîì ïðîñòðàíñòâå è íå íóæäàåòñÿ â îñâîáîæäåíèè.
//Åñëè ïÿòûé àðãóìåíò èìååò çíà÷åíèå SQLITE_TRANSIENT, òîãäà SQLite ñîçäàåò
//ñâîþ ñîáñòâåííóþ ëè÷íóþ êîïèþ äàííûõ.
////
//Ìåòîäû sqlite3_bind_* äîëæíû áûòü âûçâàíû ïåðåä sqlite3_step(),
//ïîñëå sqlite3_prepare() èëè sqlite3_reset().
//Íåñîïîñòàâëåííûå ïîäñòàíîâî÷íûå çíàêè èíòåðïðåòèðóþòñÿ êàê NULL.
////
var
SQLiteDLLInstance: THandle;
SQLite3_Backup_Finish: TSQLite3_Backup_Finish;
SQLite3_Backup_Init: TSQLite3_Backup_Init;
SQLite3_Backup_Pagecount: TSQLite3_Backup_Pagecount;
SQLite3_Backup_Remaining: TSQLite3_Backup_Remaining;
SQLite3_Backup_Step: TSQLite3_Backup_Step;
//
SQLite3_BusyHandler: TSQLite3_BusyHandler;
SQLite3_BusyTimeout: TSQLite3_BusyTimeout;
SQLite3_Changes: TSQLite3_Changes;
SQLite3_Close: TSQLite3_Close;
//
SQLite3_ColumnBlob: TSQLite3_ColumnBlob;
SQLite3_ColumnBytes: TSQLite3_ColumnBytes;
SQLite3_ColumnCount: TSQLite3_ColumnCount;
SQLite3_ColumnDeclType: TSQLite3_ColumnDeclType;
SQLite3_ColumnDouble: TSQLite3_ColumnDouble;
SQLite3_ColumnInt64: TSQLite3_ColumnInt64;
SQLite3_ColumnInt: TSQLite3_ColumnInt;
SQLite3_ColumnName: TSQLite3_ColumnName;
SQLite3_ColumnText: TSQLite3_ColumnText;
SQLite3_ColumnType: TSQLite3_ColumnType;
//
SQLite3_Complete: TSQLite3_Complete;
SQLite3_DataCount: TSQLite3_DataCount;
SQLite3_ErrCode: TSQLite3_ErrCode;
SQLite3_ErrMsg: TSQLite3_ErrMsg;
SQLite3_Exec: TSQLite3_Exec;
SQLite3_Finalize: TSQLite3_Finalize;
SQlite3_Free: TSQlite3_Free;
SQLite3_FreeTable: TSQLite3_FreeTable;
SQLite3_GetTable: TSQLite3_GetTable;
SQLite3_Interrupt: TSQLite3_Interrupt;
SQLite3_LastInsertRowID: TSQLite3_LastInsertRowID;
SQLite3_Open: TSQLite3_Open;
SQLite3_Prepare: TSQLite3_Prepare;
SQLite3_Prepare_v2: TSQLite3_Prepare_v2;
SQLite3_Reset: TSQLite3_Reset;
SQLite3_Step: TSQLite3_Step;
SQLite3_TotalChanges: TSQLite3_TotalChanges;
SQLite3_Version: TSQLite3_Version;
//
SQLite3_Bind_Blob: TSQLite3_Bind_Blob;
SQLite3_Bind_Double: TSQLite3_Bind_Double;
SQLite3_Bind_Int64: TSQLite3_Bind_Int64;
SQLite3_Bind_Int: TSQLite3_Bind_Int;
SQLite3_Bind_Null: TSQLite3_Bind_Null;
SQLite3_Bind_Parameter_Index: TSQLite3_Bind_Parameter_index;
SQLite3_Bind_Text: TSQLite3_Bind_Text;
//
SQLite3_Create_Collation: TSQLite3_Create_Collation;
SQLite3_Enable_Shared_Cache: TSQLite3_Enable_Shared_Cache;
SQLite3_Create_Function: TSQLite3_Create_Function;
SQLite3_Value_Text: TSQLite3_Value_Text;
SQLite3_Result_Text: TSQLite3_Result_Text;
SQLite3_Result_Int: TSQLite3_Result_Int;
procedure InitSQL(SQLiteLib: string = '');
procedure UnInitSQL;
implementation
procedure UnInitSQL;
begin
FreeLibrary(SQLiteDLLInstance);
end;
procedure InitSQL(SQLiteLib: string);
begin
if SQLiteLib.IsEmpty then
SQLiteLib := SQLiteDefaultDLL;
SQLiteDLLInstance := LoadLibrary(PWideChar(SQLiteLib));
if SQLiteDLLInstance <> 0 then
begin
@SQLite3_Open := GetProcAddress(SQLiteDLLInstance, 'sqlite3_open');
@SQLite3_Close := GetProcAddress(SQLiteDLLInstance, 'sqlite3_close');
@SQLite3_Exec := GetProcAddress(SQLiteDLLInstance, 'sqlite3_exec');
@SQLite3_Version := GetProcAddress(SQLiteDLLInstance, 'sqlite3_libversion');
@SQLite3_ErrMsg := GetProcAddress(SQLiteDLLInstance, 'sqlite3_errmsg');
@SQLite3_ErrCode := GetProcAddress(SQLiteDLLInstance, 'sqlite3_errcode');
@SQLite3_LastInsertRowID := GetProcAddress(SQLiteDLLInstance, 'sqlite3_last_insert_rowid');
@SQLite3_Complete := GetProcAddress(SQLiteDLLInstance, 'sqlite3_complete');
@SQLite3_GetTable := GetProcAddress(SQLiteDLLInstance, 'sqlite3_get_table');
@SQLite3_Changes := GetProcAddress(SQLiteDLLInstance, 'sqlite3_changes');
@SQLite3_TotalChanges := GetProcAddress(SQLiteDLLInstance, 'sqlite3_total_changes');
@SQLite3_Prepare := GetProcAddress(SQLiteDLLInstance, 'sqlite3_prepare');
@SQLite3_Prepare_v2 := GetProcAddress(SQLiteDLLInstance, 'sqlite3_prepare_v2');
@SQLite3_ColumnCount := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_count');
@SQLite3_ColumnName := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_name');
@SQLite3_ColumnDeclType := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_decltype');
@SQLite3_Step := GetProcAddress(SQLiteDLLInstance, 'sqlite3_step');
@SQLite3_DataCount := GetProcAddress(SQLiteDLLInstance, 'sqlite3_data_count');
@SQlite3_Free := GetProcAddress(SQLiteDLLInstance, 'sqlite3_free');
@SQLite3_FreeTable := GetProcAddress(SQLiteDLLInstance, 'sqlite3_free_table');
@SQLite3_Interrupt := GetProcAddress(SQLiteDLLInstance, 'sqlite3_interrupt');
@SQLite3_BusyHandler := GetProcAddress(SQLiteDLLInstance, 'sqlite3_busy_handler');
@SQLite3_BusyTimeout := GetProcAddress(SQLiteDLLInstance, 'sqlite3_busy_timeout');
@SQLite3_ColumnBlob := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_blob');
@SQLite3_ColumnBytes := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_bytes');
@SQLite3_ColumnDouble := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_double');
@SQLite3_ColumnInt := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_int');
@SQLite3_ColumnText := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_text');
@SQLite3_ColumnType := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_type');
@SQLite3_ColumnInt64 := GetProcAddress(SQLiteDLLInstance, 'sqlite3_column_int64');
@SQLite3_Finalize := GetProcAddress(SQLiteDLLInstance, 'sqlite3_finalize');
@SQLite3_Reset := GetProcAddress(SQLiteDLLInstance, 'sqlite3_reset');
@SQLite3_Backup_Init := GetProcAddress(SQLiteDLLInstance, 'sqlite3_backup_init');
@SQLite3_Backup_Step := GetProcAddress(SQLiteDLLInstance, 'sqlite3_backup_step');
@SQLite3_Backup_Finish := GetProcAddress(SQLiteDLLInstance, 'sqlite3_backup_finish');
@SQLite3_Backup_Remaining := GetProcAddress(SQLiteDLLInstance, 'sqlite3_backup_remaining');
@SQLite3_Backup_Pagecount := GetProcAddress(SQLiteDLLInstance, 'sqlite3_backup_pagecount');
@SQLite3_Bind_Blob := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_blob');
@SQLite3_Bind_Text := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_text');
@SQLite3_Bind_Double := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_double');
@SQLite3_Bind_Int := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_int');
@SQLite3_Bind_Int64 := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_int64');
@SQLite3_Bind_Null := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_null');
@SQLite3_Bind_Parameter_index := GetProcAddress(SQLiteDLLInstance, 'sqlite3_bind_parameter_index');
@SQLite3_Enable_Shared_Cache := GetProcAddress(SQLiteDLLInstance, 'sqlite3_enable_shared_cache');
@SQLite3_Create_Collation := GetProcAddress(SQLiteDLLInstance, 'sqlite3_create_collation');
@SQLite3_Create_Function := GetProcAddress(SQLiteDLLInstance, 'sqlite3_create_function16');
@SQLite3_Value_Text := GetProcAddress(SQLiteDLLInstance, 'sqlite3_value_text');
@SQLite3_Result_Text := GetProcAddress(SQLiteDLLInstance, 'sqlite3_result_text');
@SQLite3_Result_Int := GetProcAddress(SQLiteDLLInstance, 'sqlite3_result_int');
end
else
raise ESQLiteInitException.Create('Database library ' + SQLiteLib + ' not found');
end;
end.