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(Delphi DLL) SharePoint -- Get File Metadata (File Size, Last-Modified Date/Time, etc.)

Demonstrates how to get a file's metdata, which includes the file size, last-modified date/time, name, server relative URL, etc.

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
url: PWideChar;
jsonReply: PWideChar;
json: HCkJsonObject;
fileSize: Integer;
lastmod: HCkDateTime;
bLocalTime: Boolean;
unixTime: Integer;
dtObj: HCkDtObj;

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

http := CkHttp_Create();

// If SharePoint Windows classic authentication is used, then set the 
// Login, Password, LoginDomain, and NtlmAuth properties.
CkHttp_putLogin(http,'SHAREPOINT_USERNAME');
CkHttp_putPassword(http,'SHAREPOINT_PASSWORD');
CkHttp_putLoginDomain(http,'SHAREPOINT_NTLM_DOMAIN');
CkHttp_putNtlmAuth(http,True);

// The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
// If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
// establish the cookie as shown at SharePoint Online Authentication

// Indicate that we want a JSON reply
CkHttp_putAccept(http,'application/json;odata=verbose');

url := 'https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFileByServerRelativeUrl(''/Documents/VCAC-document.docx'')';

jsonReply := CkHttp__quickGetStr(http,url);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// Examine the file's metadata in JSON format.
json := CkJsonObject_Create();
CkJsonObject_Load(json,jsonReply);
CkJsonObject_putEmitCompact(json,False);

// Make sure it was a success response, and that we really have metadata.
// If it was an error response, then the JSON is error information..
if (CkHttp_getLastStatus(http) <> 200) then
  begin
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

Memo1.Lines.Add(CkJsonObject__emit(json));

Memo1.Lines.Add('--------');
Memo1.Lines.Add('Server relative URL: ' + CkJsonObject__stringOf(json,'d.ServerRelativeUrl'));

fileSize := CkJsonObject_IntOf(json,'d.Length');
Memo1.Lines.Add('File Size = ' + IntToStr(fileSize));

lastmod := CkDateTime_Create();
CkDateTime_SetFromTimestamp(lastmod,CkJsonObject__stringOf(json,'d.TimeLastModified'));

// Once we have the CkDateTime object, we can get the date/time in all sorts of formats:

// Get as a RFC822 GMT string:
bLocalTime := False;
Memo1.Lines.Add(CkDateTime__getAsRfc822(lastmod,bLocalTime));

// Get as an RFC822 string in the local timezone.
// (remember, the daylight savings that existed at the given time in the past is applied)
bLocalTime := True;
Memo1.Lines.Add(CkDateTime__getAsRfc822(lastmod,bLocalTime));

// Get as a 32-bit UNIX time (local or GMT..)
// The Unix time is number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). 
unixTime := CkDateTime_GetAsUnixTime(lastmod,bLocalTime);
Memo1.Lines.Add('Unix time: ' + IntToStr(unixTime));

// One can also get the as a "DtObj" object for accessing the individual
// parts of the date/time, such as month, day, year, hour, minute, etc.
// The DtObj can be obtained in the GMT or local timezone:
dtObj := CkDateTime_GetDtObj(lastmod,bLocalTime);
if (CkDateTime_getLastMethodSuccess(lastmod) = False) then
  begin
    Memo1.Lines.Add('This should never really happen!');
    Exit;
  end;

Memo1.Lines.Add(IntToStr(CkDtObj_getDay(dtObj)) + '-' + IntToStr(CkDtObj_getMonth(dtObj)) + '-' + IntToStr(CkDtObj_getYear(dtObj))
     + ' ' + IntToStr(CkDtObj_getHour(dtObj)) + ':' + IntToStr(CkDtObj_getMinute(dtObj)) + ':' + IntToStr(CkDtObj_getSecond(dtObj)));

CkDtObj_Dispose(dtObj);

// -------------------------------------------------
// The file's metadata look like this:

// { 
//   "d": { 
//     "__metadata": { 
//       "id": "Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')",
//       "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')",
//       "type": "SP.File"
//     },
//     "Author": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/Author"
//       }
//     },
//     "CheckedOutByUser": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/CheckedOutByUser"
//       }
//     },
//     "ListItemAllFields": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/ListItemAllFields"
//       }
//     },
//     "LockedByUser": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/LockedByUser"
//       }
//     },
//     "ModifiedBy": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/ModifiedBy"
//       }
//     },
//     "Versions": { 
//       "__deferred": { 
//         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/Versions"
//       }
//     },
//     "CheckInComment": "",
//     "CheckOutType": 2,
//     "ContentTag": "{E2F05E75-B3EF-4826-8284-E572D3628A7D},9,10",
//     "CustomizedPageStatus": 0,
//     "ETag": "\"{E2F05E75-B3EF-4826-8284-E572D3628A7D},9\"",
//     "Exists": true,
//     "Length": "21082",
//     "Level": 2,
//     "MajorVersion": 0,
//     "MinorVersion": 3,
//     "Name": "VCAC-document.docx",
//     "ServerRelativeUrl": "/Documents/VCAC-document.docx",
//     "TimeCreated": "2016-03-04T12:38:01Z",
//     "TimeLastModified": "2017-01-16T04:44:31Z",
//     "Title": "",
//     "UIVersion": 3,
//     "UIVersionLabel": "0.3"
//   }
// }
// 

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkDateTime_Dispose(lastmod);

end;

 

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