Delphi DLL

CSV Append New Row

Demonstrates how to append a new row to a CSV. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Csv, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
bCrlf: Boolean;
sb: HCkStringBuilder;
csv: HCkCsv;
csvTemp: HCkCsv;
numCols: Integer;
i: Integer;
row: 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 := CkStringBuilder_Create();
CkStringBuilder_AppendLine(sb,'permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round',bCrlf);
CkStringBuilder_AppendLine(sb,'lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b',bCrlf);
CkStringBuilder_AppendLine(sb,'mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed',bCrlf);
CkStringBuilder_AppendLine(sb,'flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed',bCrlf);

csv := CkCsv_Create();

CkCsv_putHasColumnNames(csv,True);
success := CkCsv_LoadFromString(csv,CkStringBuilder__getAsString(sb));

// Let's say we want to append the following row:
// yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a

// If we have the row as-is, we could do this:
csvTemp := CkCsv_Create();
success := CkCsv_LoadFromString(csvTemp,'yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a');
numCols := CkCsv_getNumColumns(csvTemp);
i := 0;
row := CkCsv_getNumRows(csv);
while i < numCols do
  begin
    CkCsv_SetCell(csv,row,i,CkCsv__getCell(csvTemp,0,i));
    i := i + 1;
  end;

// Show the updated CSV:
Memo1.Lines.Add(CkCsv__saveToString(csv));

// 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,Gilbert,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

CkStringBuilder_Dispose(sb);
CkCsv_Dispose(csv);
CkCsv_Dispose(csvTemp);

end;