(PureBasic) OneDrive -- Download Text File to Memory

Downloads a text file (such as XML, JSON, plain-text, HTML, etc.) into a StringBuilder object.

Note: This example requires Chilkat v9.5.0.97 or greater.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

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

    ; This example uses the OAuth client credentials flow.
    ; See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

    ; Use your client ID, client secret, and tenant ID in the following lines
    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateString(json,"client_id","2871da2c-8176-4b7f-869b-2311aa82e743")
    CkJsonObject::ckUpdateString(json,"client_secret","2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH")
    CkJsonObject::ckUpdateString(json,"scope","https://graph.microsoft.com/.default")
    CkJsonObject::ckUpdateString(json,"token_endpoint","https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token")

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

    CkHttp::setCkAuthToken(http, CkJsonObject::ckEmit(json))

    ; Sends the following GET request:
    ; GET https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{item-path}:/content

    ; Make sure to automatically follow redirects
    CkHttp::setCkFollowRedirects(http, 1)

    ; This example will download /Misc/hamlet.xml
    CkHttp::ckSetUrlVar(http,"item_path","Misc/hamlet.xml")
    CkHttp::ckSetUrlVar(http,"user_id","4fe732c3-322e-4a6b-b729-2fd1eb5c6104")

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

    expectedCharset.s = "utf-8"
    url.s = "https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{$item_path}:/content"
    success.i = CkHttp::ckDownloadSb(http,url,expectedCharset,sbXml)
    If CkHttp::ckLastMethodSuccess(http) <> 1
        Debug CkHttp::ckLastErrorText(http)
        CkJsonObject::ckDispose(json)
        CkHttp::ckDispose(http)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

    ; If the response status code was not 200, then it failed.
    If CkHttp::ckLastStatus(http) <> 200
        Debug "Response Status Code = " + Str(CkHttp::ckLastStatus(http))
        Debug "Failed."
        CkJsonObject::ckDispose(json)
        CkHttp::ckDispose(http)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

    ; If we got here, then the file was successfully downloaded.
    Debug "Download from OneDrive successful."
    Debug "The file is contained in sbXml."


    CkJsonObject::ckDispose(json)
    CkHttp::ckDispose(http)
    CkStringBuilder::ckDispose(sbXml)


    ProcedureReturn
EndProcedure