Delphi DLL

Google Sheets - Read a Single Range

See more Google Sheets Examples

Reads the values stored in the range Sheet1!A1:B5 and returns them in the response. Delphi DLL

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
jsonToken: HCkJsonObject;
http: HCkHttp;
jsonResponse: PWideChar;
json: HCkJsonObject;
i: Integer;
count_i: Integer;
j: Integer;
count_j: Integer;
range: PWideChar;
majorDimension: PWideChar;
strVal: PWideChar;

begin
success := False;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses a previously obtained access token having permission for the 
// Google Sheets scope.

// In this example, Get Google Sheets OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/googleSheets.json');
if (CkJsonObject_HasMember(jsonToken,'access_token') = False) then
  begin
    Memo1.Lines.Add('No access token found.');
    Exit;
  end;
http := CkHttp_Create();
CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));
CkHttp_putSessionLogFilename(http,'qa_output/sessionLog.txt');

// Get the cells defined by the range A1:B5
jsonResponse := CkHttp__quickGetStr(http,'https://sheets.googleapis.com/v4/spreadsheets/spreadsheetId/values/Sheet1!A1:B5');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add(jsonResponse);

json := CkJsonObject_Create();
CkJsonObject_Load(json,jsonResponse);

// A sample response is shown below.
// To generate the parsing source code for a JSON response, paste
// the JSON into this online tool: Generate JSON parsing code

// {
//   "range": "Sheet1!A1:B5",
//   "majorDimension": "ROWS",
//   "values": [
//     [
//       "Item",
//       "Cost"
//     ],
//     [
//       "Wheel",
//       "$20.50"
//     ],
//     [
//       "Door",
//       "$15"
//     ],
//     [
//       "Engine",
//       "$100"
//     ],
//     [
//       "Totals",
//       "$135.50"
//     ]
//   ]
// }

range := CkJsonObject__stringOf(json,'range');
majorDimension := CkJsonObject__stringOf(json,'majorDimension');
i := 0;
count_i := CkJsonObject_SizeOfArray(json,'values');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    j := 0;
    count_j := CkJsonObject_SizeOfArray(json,'values[i]');
    while j < count_j do
      begin
        CkJsonObject_putJ(json,j);
        strVal := CkJsonObject__stringOf(json,'values[i][j]');
        j := j + 1;
      end;

    i := i + 1;
  end;

CkJsonObject_Dispose(jsonToken);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;