PureBasic

Upload File from String

See more Google Drive Examples

Uploads a text file where the contents of the file are contained in a string variable.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

PureBasic

IncludeFile "CkAuthGoogle.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

    success.i = 0

    success = 1

    ; 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.

    gAuth.i = CkAuthGoogle::ckCreate()
    If gAuth.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkAuthGoogle::setCkAccessToken(gAuth, "GOOGLE-DRIVE-ACCESS-TOKEN")

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect using TLS.
    bAutoReconnect.i = 1
    success = CkRest::ckConnect(rest,"www.googleapis.com",443,1,bAutoReconnect)

    ; Provide the authentication credentials (i.e. the access token)
    CkRest::ckSetAuthGoogle(rest,gAuth)

    ; A multipart upload to Google Drive needs a multipart/related Content-Type
    CkRest::ckAddHeader(rest,"Content-Type","multipart/related")

    ; Specify each part of the request.

    ; The 1st part is JSON with information about the file.
    CkRest::setCkPartSelector(rest, "1")
    CkRest::ckAddHeader(rest,"Content-Type","application/json; charset=UTF-8")

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckAppendString(json,"name","helloWorld.txt")
    CkJsonObject::ckAppendString(json,"description","A simple text file that says Hello World.")
    CkJsonObject::ckAppendString(json,"mimeType","text/plain")
    CkRest::ckSetMultipartBodyString(rest,CkJsonObject::ckEmit(json))

    ; The 2nd part is the file content.
    ; In this case, we'll upload a simple text file containing "Hello World!"
    CkRest::setCkPartSelector(rest, "2")
    CkRest::ckAddHeader(rest,"Content-Type","text/plain")

    fileContents.s = "Hello World!"
    CkRest::ckSetMultipartBodyString(rest,fileContents)

    jsonResponse.s = CkRest::ckFullRequestMultipart(rest,"POST","/upload/drive/v3/files?uploadType=multipart")
    If CkRest::ckLastMethodSuccess(rest) <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        ProcedureReturn
    EndIf

    ; A successful response will have a status code equal to 200.
    If CkRest::ckResponseStatusCode(rest) <> 200
        Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest))
        Debug "response status text = " + CkRest::ckResponseStatusText(rest)
        Debug "response header: " + CkRest::ckResponseHeader(rest)
        Debug "response JSON: " + jsonResponse
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        ProcedureReturn
    EndIf

    ; Show the JSON response.
    CkJsonObject::ckLoad(json,jsonResponse)

    ; Show the full JSON response.
    CkJsonObject::setCkEmitCompact(json, 0)
    Debug CkJsonObject::ckEmit(json)

    ; A successful response looks like this:
    ; {
    ;   "kind": "drive#file",
    ;   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    ;   "name": "Untitled",
    ;   "mimeType": "text/plain"
    ; }

    ; Get the fileId:
    Debug "fileId: " + CkJsonObject::ckStringOf(json,"id")


    CkAuthGoogle::ckDispose(gAuth)
    CkRest::ckDispose(rest)
    CkJsonObject::ckDispose(json)


    ProcedureReturn
EndProcedure