Pascal (Lazarus/Delphi)

CSV Set Cell by Index or Name

Demonstrates how to update the value of a CSV cell, or add new cells. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Csv,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  bCrlf: Boolean;
  sb: TStringBuilder;
  csv: TCsv;
  row_idx: Integer;

begin
  success := False;

  //  We have the following CSV...

  //  permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
  //  lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
  //  mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
  //  flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
  //  infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
  //  gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

  bCrlf := True;
  sb := TStringBuilder.Create;
  sb.AppendLine('permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round',bCrlf);
  sb.AppendLine('lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b',bCrlf);
  sb.AppendLine('mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed',bCrlf);
  sb.AppendLine('flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a',bCrlf);
  sb.AppendLine('infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a',bCrlf);
  sb.AppendLine('gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed',bCrlf);

  csv := TCsv.Create;

  csv.HasColumnNames := True;
  success := csv.LoadFromString(sb.GetAsString());

  //  Update the city "Gilbert" to "Tuscon".
  csv.SetCell(3,4,'Tuscon');

  //  Add a new row.
  row_idx := csv.NumRows;
  csv.SetCellByName(row_idx,'permalink','yelp');
  csv.SetCellByName(row_idx,'company','Yelp');
  csv.SetCellByName(row_idx,'numEmps','');
  csv.SetCellByName(row_idx,'category','web');
  csv.SetCellByName(row_idx,'city','San Francisco');
  csv.SetCellByName(row_idx,'state','CA');
  csv.SetCellByName(row_idx,'fundedDate','1-Jul-04');
  csv.SetCellByName(row_idx,'raisedAmt','1000000');
  csv.SetCellByName(row_idx,'raisedCurrency','USD');
  csv.SetCellByName(row_idx,'round','a');

  //  Show the updated CSV:
  WriteLn(csv.SaveToString());

  //  Output should be:
  //  permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
  //  lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
  //  mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
  //  flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
  //  infusionsoft,Infusionsoft,105,software,Tuscon,AZ,1-Oct-07,9000000,USD,a
  //  gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed
  //  yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a


  sb.Free;
  csv.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.