diff options
Diffstat (limited to 'src/lib/SQLite/SQLite3.pas')
| -rw-r--r-- | src/lib/SQLite/SQLite3.pas | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/src/lib/SQLite/SQLite3.pas b/src/lib/SQLite/SQLite3.pas new file mode 100644 index 00000000..7b7207c4 --- /dev/null +++ b/src/lib/SQLite/SQLite3.pas @@ -0,0 +1,253 @@ +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} + {$H+} (* use long strings *) + {$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; out 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; out hStmt: TSqliteStmt; out pzTail: PAnsiChar): integer; cdecl; external SQLiteDLL name 'sqlite3_prepare'; +function SQLite3_Prepare_v2(db: TSQLiteDB; SQLStatement: PAnsiChar; nBytes: integer; out hStmt: TSqliteStmt; out 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; external SQLiteDLL name 'sqlite3_enable_shared_cache'; + +//user collate definiton +function SQLite3_create_collation(db: TSQLiteDB; Name: PAnsiChar; eTextRep: integer; + UserData: pointer; xCompare: TCollateXCompare): integer; cdecl; external SQLiteDLL name 'sqlite3_create_collation'; + +function SQLiteFieldType(SQLiteFieldTypeCode: Integer): AnsiString; +function SQLiteErrorStr(SQLiteErrorCode: Integer): AnsiString; + +implementation + +uses + SysUtils; + +function SQLiteFieldType(SQLiteFieldTypeCode: Integer): AnsiString; +begin + case SQLiteFieldTypeCode of + SQLITE_INTEGER: Result := 'Integer'; + SQLITE_FLOAT: Result := 'Float'; + SQLITE_TEXT: Result := 'Text'; + SQLITE_BLOB: Result := 'Blob'; + SQLITE_NULL: Result := 'Null'; + else + Result := 'Unknown SQLite Field Type Code "' + IntToStr(SQLiteFieldTypeCode) + '"'; + end; +end; + +function SQLiteErrorStr(SQLiteErrorCode: Integer): AnsiString; +begin + case SQLiteErrorCode of + SQLITE_OK: Result := 'Successful result'; + SQLITE_ERROR: Result := 'SQL error or missing database'; + SQLITE_INTERNAL: Result := 'An internal logic error in SQLite'; + SQLITE_PERM: Result := 'Access permission denied'; + SQLITE_ABORT: Result := 'Callback routine requested an abort'; + SQLITE_BUSY: Result := 'The database file is locked'; + SQLITE_LOCKED: Result := 'A table in the database is locked'; + SQLITE_NOMEM: Result := 'A malloc() failed'; + SQLITE_READONLY: Result := 'Attempt to write a readonly database'; + SQLITE_INTERRUPT: Result := 'Operation terminated by sqlite3_interrupt()'; + SQLITE_IOERR: Result := 'Some kind of disk I/O error occurred'; + SQLITE_CORRUPT: Result := 'The database disk image is malformed'; + SQLITE_NOTFOUND: Result := '(Internal Only) Table or record not found'; + SQLITE_FULL: Result := 'Insertion failed because database is full'; + SQLITE_CANTOPEN: Result := 'Unable to open the database file'; + SQLITE_PROTOCOL: Result := 'Database lock protocol error'; + SQLITE_EMPTY: Result := 'Database is empty'; + SQLITE_SCHEMA: Result := 'The database schema changed'; + SQLITE_TOOBIG: Result := 'Too much data for one row of a table'; + SQLITE_CONSTRAINT: Result := 'Abort due to contraint violation'; + SQLITE_MISMATCH: Result := 'Data type mismatch'; + SQLITE_MISUSE: Result := 'Library used incorrectly'; + SQLITE_NOLFS: Result := 'Uses OS features not supported on host'; + SQLITE_AUTH: Result := 'Authorization denied'; + SQLITE_FORMAT: Result := 'Auxiliary database format error'; + SQLITE_RANGE: Result := '2nd parameter to sqlite3_bind out of range'; + SQLITE_NOTADB: Result := 'File opened that is not a database file'; + SQLITE_ROW: Result := 'sqlite3_step() has another row ready'; + SQLITE_DONE: Result := 'sqlite3_step() has finished executing'; + else + Result := 'Unknown SQLite Error Code "' + IntToStr(SQLiteErrorCode) + '"'; + end; +end; + +function ColValueToStr(Value: PAnsiChar): AnsiString; +begin + if (Value = nil) then + Result := 'NULL' + else + Result := Value; +end; + + +end. + |