(Lianja) Get File Metadata

Gets a file's metadata or content by ID.

See Google Drive Files get for additional details.

Chilkat Lianja Extension Download Chilkat Lianja Extension

llSuccess = .T.

// It 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 Drive scope.

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

loRest = createobject("CkRest")

// Connect using TLS.
// A single REST object, once connected, can be used for many Google Drive REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.googleapis.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

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

// We need to send a GET request like this:
// GET https://www.googleapis.com/drive/v3/files/fileId
// The fileId is part of the path.
loSbPath = createobject("CkStringBuilder")
loSbPath.Append("/drive/v3/files/")
// Assume we previously obtained the fileId for the file of interest...
loSbPath.Append("0B53Q6OSTWYolbUF6WS1Gei1oalk")

// Indicate that we want ALL possible fields.
// If no fields are indicated, then only the basic fields are returned.
lcAllFields = "appProperties,capabilities,contentHints,createdTime,description,explicitlyTrashed,fileExtension,folderColorRgb,fullFileExtension,headRevisionId,iconLink,id,imageMediaMetadata,isAppAuthorized,kind,lastModifyingUser,md5Checksum,mimeType,modifiedByMeTime,modifiedTime,name,originalFilename,ownedByMe,owners,parents,permissions,properties,quotaBytesUsed,shared,sharedWithMeTime,sharingUser,size,spaces,starred,thumbnailLink,trashed,version,videoMediaMetadata,viewedByMe,viewedByMeTime,viewersCanCopyContent,webContentLink,webViewLink,writersCanShare"

loRest.AddQueryParam("fields",lcAllFields)

lcJsonResponse = loRest.FullRequestNoBody("GET",loSbPath.GetAsString())
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loGAuth
    release loRest
    release loSbPath
    return
endif

// A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response JSON: " + lcJsonResponse
    release loGAuth
    release loRest
    release loSbPath
    return
endif

// ---------------------------------------------------
// Sample code for parsing this JSON is shown below...
// ---------------------------------------------------

// A successful response looks like this:
// {
//   "kind": "drive#file",
//   "id": "0B53Q6OSTWYolbUF6WS1Gei1oalk",
//   "name": "penguins.jpg",
//   "mimeType": "image/jpeg",
//   "starred": false,
//   "trashed": false,
//   "explicitlyTrashed": false,
//   "parents": [
//     "0B53Q6OSTWYola296ODZUSm5GYU0"
//   ],
//   "spaces": [
//     "drive"
//   ],
//   "version": "672",
//   "webContentLink": "https://docs.google.com/a/chilkatcloud.com/uc?id=0B53Q6OSTWYolbUF6WS1Gei1oalk&export=download",
//   "webViewLink": "https://drive.google.com/a/chilkatcloud.com/file/d/0B53Q6OSTWYolbUF6WS1Gei1oalk/view?usp=drivesdk",
//   "iconLink": "https://ssl.gstatic.com/docs/doclist/images/icon_11_image_list.png",
//   "thumbnailLink": "https://lh5.googleusercontent.com/uIV1dJdc8vsAQzaaIInpc9AV55AcdHhpM7fQeI2RN2qbCSnhjK9IDdNQAOTtkvjS9ZObqw=s220",
//   "viewedByMe": true,
//   "viewedByMeTime": "2016-10-08T12:38:02.258Z",
//   "createdTime": "2016-10-08T12:38:02.258Z",
//   "modifiedTime": "2016-10-08T12:38:02.258Z",
//   "modifiedByMeTime": "2016-10-08T12:38:02.258Z",
//   "owners": [
//     {
//       "kind": "drive#user",
//       "displayName": "Matthew Smith",
//       "me": true,
//       "permissionId": "08366696655122259092",
//       "emailAddress": "support@chilkatcloud.com"
//     }
//   ],
//   "lastModifyingUser": {
//     "kind": "drive#user",
//     "displayName": "Matthew Smith",
//     "me": true,
//     "permissionId": "08366696655122259092",
//     "emailAddress": "support@chilkatcloud.com"
//   },
//   "shared": false,
//   "ownedByMe": true,
//   "capabilities": {
//     "canEdit": true,
//     "canComment": true,
//     "canShare": true,
//     "canCopy": true,
//     "canReadRevisions": true
//   },
//   "viewersCanCopyContent": true,
//   "writersCanShare": true,
//   "permissions": [
//     {
//       "kind": "drive#permission",
//       "id": "08366696655122259092",
//       "type": "user",
//       "emailAddress": "support@chilkatcloud.com",
//       "role": "owner",
//       "displayName": "Matthew Smith"
//     }
//   ],
//   "originalFilename": "penguins.jpg",
//   "fullFileExtension": "jpg",
//   "fileExtension": "jpg",
//   "md5Checksum": "9d377b10ce778c4938b3c7e2c63a229a",
//   "size": "777835",
//   "quotaBytesUsed": "777835",
//   "headRevisionId": "0B53Q6OSTWYolUUlHVFhHdFlXQ0R1aHZuT0tORTVzc2h5NnZjPQ",
//   "imageMediaMetadata": {
//     "width": 1024,
//     "height": 768,
//     "rotation": 0,
//     "time": "2009:03:12 13:48:35"
//   },
//   "isAppAuthorized": false
// }

// Iterate over each file in the response and show the name, id, and mimeType.
loJson = createobject("CkJsonObject")
loJson.Load(lcJsonResponse)

// Show the full JSON response.
loJson.EmitCompact = .F.
? loJson.Emit()
? "-"

// Demonstrate how to get pieces of information:
? "Original Filename: " + loJson.StringOf("originalFilename")

llWasLastModifiedUserMe = loJson.BoolOf("lastModifyingUser.me")
? "Was Last Modified by Me: " + str(llWasLastModifiedUserMe)

// Assuming this is an image file...
lnWidth = loJson.IntOf("imageMediaMetadata.width")
? "Image Width: " + str(lnWidth)

// Iterate over parents...

lnNumParents = loJson.SizeOfArray("parents")
i = 0
do while i < lnNumParents
    loJson.I = i
    ? "Parent " + str(i) + ": " + loJson.StringOf("parents[i]")
    i = i + 1
enddo

// Iterate over owners...
lnNumOwners = loJson.SizeOfArray("owners")
i = 0
do while i < lnNumOwners
    loJson.I = i
    ? "Owner " + str(i) + ": kind=" + loJson.StringOf("owners[i].kind") + " displayName=" + loJson.StringOf("owners[i].displayName")
    i = i + 1
enddo

// Iterate over permissions...
lnNumPermissions = loJson.SizeOfArray("permissions")
i = 0
do while i < lnNumPermissions
    loJson.I = i
    ? "Permission " + str(i) + ": kind=" + loJson.StringOf("permissions[i].kind") + " id=" + loJson.StringOf("permissions[i].id")
    i = i + 1
enddo


release loGAuth
release loRest
release loSbPath
release loJson