Советы по Delphi


Импорт CSV ASCII


...вот то, что вам нужно. Я использую этот компонент для работы с разделителем при импорте ASCII.

Dave

    unit Cdbascii;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls, Forms, Dialogs, DbiErrs, DbiTypes, DbiProcs, DB, DBTables;
type
TAsciiDelimTable = class(TTable) private { Private declarations } fQuote :Char; fDelim :Char; protected { Protected declarations } function CreateHandle: HDBICur; override; Procedure SetQuote(newValue :Char); Procedure SetDelim(newValue :Char); public { Public declarations } constructor Create(AOwner: TComponent); override; destructor Destroy; override; { Эти свойства не должны больше публиковаться } property IndexFieldNames; property IndexName; property MasterFields; property MasterSource; property UpdateMode; published { Published declarations } Property Quote:Char Read fQuote Write setQuote Default '"'; Property Delim:Char Read fDelim Write setDelim Default ','; end;
procedure Register;

implementation

uses
DBConsts;

procedure Register;
begin
RegisterComponents('Data Access', [TAsciiDelimTable]); end;

constructor TAsciiDelimTable.Create(AOwner: TComponent);
Begin
Inherited
Create(AOwner); Exclusive:=True; TableType:=ttASCII; fQuote := '"'; fDelim := ','; End;

destructor TAsciiDelimTable.Destroy;
Begin
Inherited
Destroy; End;

{ Рабочий код }

function CheckOpen(Status: DBIResult): Boolean;
begin
case
Status of DBIERR_NONE: Result := True; DBIERR_NOTSUFFTABLERIGHTS: begin if not Session.GetPassword then DbiError(Status); Result := False; end; else DbiError(Status); end; end;

function TAsciiDelimTable.CreateHandle: HDBICur;
const
OpenModes: array[Boolean] of DbiOpenMode = (dbiReadWrite, dbiReadOnly); ShareModes: array[Boolean] of DbiShareMode = (dbiOpenShared, dbiOpenExcl); var
STableName: array[0..SizeOf(TFileName) - 1] of Char; SDriverType: array[0..12] of Char; begin
if TableName = '' then DBError(SNoTableName); AnsiToNative(DBLocale, TableName, STableName, SizeOf(STableName) - 1); StrPCopy(SDriverType, 'ASCIIDRV-'+Quote+'-'+Delim); Result := nil; while not CheckOpen(DbiOpenTable(DBHandle, STableName, SDriverType, nil, nil, 0, OpenModes[ReadOnly], ShareModes[Exclusive], xltField, False, nil, Result)) do {Повтор}; end;

Procedure TAsciiDelimTable.SetQuote(newValue :Char);
Begin
If
Active Then {    DBError(SInvalidBatchMove); }; fQuote := newValue; End;
Procedure TAsciiDelimTable.SetDelim(newValue :Char);
Begin
If
Active Then {    DBError(SInvalidBatchMove); }; fDelim := newValue; End;

end.

[000419]




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