PureBasic

Get a Digest Message as an Email Object

Demonstrates the Chilkat Email.GetDigestEmail method, which copies the Nth digest email contained within a multipart/digest into another Email object. The first digest is at index 0; the NumDigests property gives the count. This example loads a digest email and lists each bundled message's subject.

Background: A multipart/digest packs many separate emails into one carrier message — historically used by mailing lists to send a single daily bundle of that day's posts. GetDigestEmail unpacks each member into a full Email object so it can be read or processed individually. This differs from GetAttachedEmail, which extracts messages attached to an ordinary email rather than the members of a digest.

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PureBasic

IncludeFile "CkEmail.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the GetDigestEmail method, which copies the Nth digest email contained
    ;  within a multipart/digest into another Email object.  The first digest is at index 0;
    ;  use the NumDigests property for the count.

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

    success = CkEmail::ckLoadEml(email,"qa_data/eml/digest.eml")
    If success = 0
        Debug CkEmail::ckLastErrorText(email)
        CkEmail::ckDispose(email)
        ProcedureReturn
    EndIf

    n.i = CkEmail::ckNumDigests(email)
    Debug "NumDigests = " + Str(n)

    ;  Retrieve each bundled message as its own Email object.
    digestEmail.i = CkEmail::ckCreate()
    If digestEmail.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    i.i
    For i = 0 To n - 1
        success = CkEmail::ckGetDigestEmail(email,i,digestEmail)
        Debug "Digest " + Str(i) + " subject: " + CkEmail::ckSubject(digestEmail)
    Next

    ;  Note: The path "qa_data/..." is a relative local filesystem path,
    ;  relative to the current working directory of the running application.


    CkEmail::ckDispose(email)
    CkEmail::ckDispose(digestEmail)


    ProcedureReturn
EndProcedure