SQLite3.pas ( File view )

  • By adm.maniaco 2014-09-01
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			unit SQLite3;

{

  Simplified interface for SQLite.
  Updated for Sqlite 3 by Tim Anderson (tim@itwriting.com)
  Note: NOT COMPLETE for version 3, just minimal functionality
  Adapted from file created by Pablo Pissanetzky (pablo@myhtpc.net)
  which was based on SQLite.pas by Ben Hochstrasser (bhoc@surfeu.ch)

}

{
$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

const
{
$IF Defined(MSWINDOWS)
}
  SQLiteDLL = 'sqlite3.dll';
{
$ELSEIF Defined(DARWIN)
}
  SQLiteDLL = 'libsqlite3.dylib';
  {
$linklib libsqlite3
}
{
$ELSEIF Defined(UNIX)
}
  SQLiteDLL = 'sqlite3.so';
{
$IFEND
}

// Return values for sqlite3_exec() and 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

  SQLITE_INTEGER = 1;
  SQLITE_FLOAT   = 2;
  SQLITE_TEXT    = 3;
  SQLITE_BLOB    = 4;
  SQLITE_NULL    = 5;

  SQLITE_UTF8     = 1;
  SQLITE_UTF16    = 2;
  SQLITE_UTF16BE  = 3;
  SQLITE_UTF16LE  = 4;
  SQLITE_ANY      = 5;

  SQLITE_STATIC    {
: TSQLite3Destructor
} = Pointer(0);
  SQLITE_TRANSIENT {
: TSQLite3Destructor
} = Pointer(-1);

type
  TSQLiteDB = Pointer;
  TSQLiteResult = ^PAnsiChar;
  TSQLiteStmt = Pointer;

type
  PPAnsiCharArray = ^TPAnsiCharArray; 
  TPAnsiCharArray = array[0 .. (MaxInt div SizeOf(PAnsiChar))-1] of PAnsiChar;

type
  TSQLiteExecCallback = function(UserData: Pointer; NumCols: integer; ColValues:
    PPAnsiCharArray; ColNames: PPAnsiCharArray): integer; cdecl;
  TSQLiteBusyHandlerCallback = function(UserData: Pointer; P2: integer): integer; cdecl;

  //function prototype for define own collate
  TCollateXCompare = function(UserData: pointer; Buf1Len: integer; Buf1: pointer;
    Buf2Len: integer; Buf2: pointer): integer; cdecl;
    

function SQLite3_Open(filename: PAnsiChar; var db: TSQLiteDB): integer; cdecl; external SQLiteDLL name 'sqlite3_open';
function SQLite3_Close(db: TSQLiteDB): integer; cdecl; external SQLiteDLL name 'sqlite3_close';
function SQLite3_Exec(db: TSQLiteDB; SQLStatement: PAnsiChar; CallbackPtr: TSQLiteExecCallback; UserData: Pointer; var ErrMsg: PAnsiChar): integer; cdecl; external SQLiteDLL name 'sqlite3_exec';
function SQLite3_Version(): PAnsiChar; cdecl; external SQLiteDLL name 'sqlite3_libversion';
function SQLite3_ErrMsg(db: TSQLiteDB): PAnsiChar; cdecl; external SQLiteDLL name 'sqlite3_errmsg';
function SQLite3_ErrCode(db: TSQLiteDB): integer; cdecl; external SQLiteDLL name 'sqlite3_errcode';
procedure SQlite3_Free(P: PAnsiChar); cdecl; external SQLiteDLL name 'sqlite3_free';
function SQLite3_GetTable(db: TSQLiteDB; SQLStatement: PAnsiChar; var ResultPtr: TSQLiteResult; var RowCount: Cardinal; var ColCount: Cardinal; var ErrMsg: PAnsiChar): integer; cdecl; external SQLiteDLL name 'sqlite3_get_table';
procedure SQLite3_FreeTable(Table: TSQLiteResult); cdecl; external SQLiteDLL name 'sqlite3_free_table';
function SQLite3_Complete(P: PAnsiChar): boolean; cdecl; external SQLiteDLL name 'sqlite3_complete';
function SQLite3_LastInsertRowID(db: TSQLiteDB): int64; cdecl; external SQLiteDLL name 'sqlite3_last_insert_rowid';
procedure SQLite3_Interrupt(db: TSQLiteDB); cdecl; external SQLiteDLL name 'sqlite3_interrupt';
procedure SQLite3_BusyHandler(db: TSQLiteDB; CallbackPtr: TSQLiteBusyHandlerCallback; UserData: Pointer); cdecl; external SQLiteDLL name 'sqlite3_busy_handler';
procedure SQLite3_BusyTimeout(db: TSQLiteDB; TimeOut: integer); cdecl; external SQLiteDLL name 'sqlite3_busy_timeout';
function SQLite3_Changes(db: TSQLiteDB): integer; cdecl; external SQLiteDLL name 'sqlite3_changes';
function SQLite3_TotalChanges(db: TSQLiteDB): integer; cdecl; external SQLiteDLL name 'sqlite3_total_changes';
function SQLite3_Prepare(db: TSQLiteDB; SQLStatement: PAnsiChar; nBytes: integer; var hStmt: TSqliteStmt; var pzTail: PAnsiChar): integer; cdecl; external SQLiteDLL name 'sqlite3_prepare';
function SQLite3_Prepare_v2(db: TSQLiteDB; SQLStatement: PAnsiChar; nBytes: integer; var hStmt: TSqliteStmt; var pzTail: PAnsiChar): integer; cdecl; external SQLiteDLL name 'sqlite3_prepare_v2';
function SQLite3_ColumnCount(hStmt: TSqliteStmt): integer; cdecl; external SQLiteDLL name 'sqlite3_column_count';
function SQLite3_ColumnName(hStmt: TSqliteStmt; ColNum: integer): PAnsiChar; cdecl; external SQLiteDLL name 'sqlite3_column_name';
function SQLite3_ColumnDeclType(hStmt: TSqliteStmt; ColNum: integer): PAnsiChar; cdecl; external SQLiteDLL name 'sqlite3_column_decltype';
function SQLite3_Step(hStmt: TSqliteStmt): integer; cdecl; external SQLiteDLL name 'sqlite3_step';
function SQLite3_DataCount(hStmt: TSqliteStmt): integer; cdecl; external SQLiteDLL name 'sqlite3_data_count';

function SQLite3_ColumnBlob(hStmt: TSqliteStmt; ColNum: integer): pointer; cdecl; external SQLiteDLL name 'sqlite3_column_blob';
function SQLite3_ColumnBytes(hStmt: TSqliteStmt; ColNum: integer): integer; cdecl; external SQLiteDLL name 'sqlite3_column_bytes';
function SQLite3_ColumnDouble(hStmt: TSqliteStmt; ColNum: integer): double; cdecl; external SQLiteDLL name 'sqlite3_column_double';
function SQLite3_ColumnInt(hStmt: TSqliteStmt; ColNum: integer): integer; cdecl; external SQLiteDLL name 'sqlite3_column_int';
function SQLite3_ColumnText(hStmt: TSqliteStmt; ColNum: integer): PAnsiChar; cdecl; external SQLiteDLL name 'sqlite3_column_text';
function SQLite3_ColumnType(hStmt: TSqliteStmt; ColNum: integer): integer; cdecl; external SQLiteDLL name 'sqlite3_column_type';
function SQLite3_ColumnInt64(hStmt: TSqliteStmt; ColNum: integer): Int64; cdecl; external SQLiteDLL name 'sqlite3_column_int64';
function SQLite3_Finalize(hStmt: TSqliteStmt): integer; cdecl; external SQLiteDLL name 'sqlite3_finalize';
function SQLite3_Reset(hStmt: TSqliteStmt): integer; cdecl; external SQLiteDLL name 'sqlite3_reset';

// 
// In the SQL strings input to sqlite3_prepare() and sqlite3_prepare16(),
// one or more literals can be replace by a wildcard "?" or ":N:" where
// N is an integer.  These value of these wildcard literals can be set
// using the routines listed below.
// 
// In every case, the first parameter is a pointer to the sqlite3_stmt
// structure returned from sqlite3_prepare().  The second parameter is the
// index of the wildcard.  The first "?" has an index of 1.  ":N:" wildcards
// use the index N.
// 
// The fifth parameter to sqlite3_bind_blob(), sqlite3_bind_text(), and
//sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
//text after SQLite has finished with it.  If the fifth argument is the
// special value SQLITE_STATIC, then the library assumes that the information
// is in static, unmanaged space and does not need to be freed.  If the
// fifth argument has the value SQLITE_TRANSIENT, then SQLite makes its
// own private copy of the data.
// 
// The sqlite3_bind_* routine must be called before sqlite3_step() after
// an sqlite3_prepare() or sqlite3_reset().  Unbound wildcards are interpreted
// as NULL.
// 

type
  TSQLite3Destructor = procedure(Ptr: Pointer); cdecl;

function sqlite3_bind_blob(hStmt: TSqliteStmt; ParamNum: integer;
  ptrData: pointer; numBytes: integer; ptrDestructor: TSQLite3Destructor): integer;
cdecl; external SQLiteDLL name 'sqlite3_bind_blob';
function sqlite3_bind_text(hStmt: TSqliteStmt; ParamNum: integer;
  Text: PAnsiChar; numBytes: integer; ptrDestructor: TSQLite3Destructor): integer;
cdecl; external SQLiteDLL name 'sqlite3_bind_text';
function sqlite3_bind_double(hStmt: TSqliteStmt; ParamNum: integer; Data: Double): integer;
  cdecl; external SQLiteDLL name 'sqlite3_bind_double';
function sqlite3_bind_int(hStmt: TSqLiteStmt; ParamNum: integer; Data: integer): integer;
  cdecl; external SQLiteDLL name 'sqlite3_bind_int';
function sqlite3_bind_int64(hStmt: TSqliteStmt; ParamNum: integer; Data: int64): integer;
  cdecl; external SQLiteDLL name 'sqlite3_bind_int64';
function sqlite3_bind_null(hStmt: TSqliteStmt; ParamNum: integer): integer;
  cdecl; external SQLiteDLL name 'sqlite3_bind_null';

function sqlite3_bind_parameter_index(hStmt: TSqliteStmt; zName: PAnsiChar): integer;
  cdecl; external SQLiteDLL name 'sqlite3_bind_parameter_index';

function sqlite3_enable_shared_cache(Value: integer): integer; cdecl;
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