DataFlex

Unzip an Email's Zip Attachments

Demonstrates the Chilkat Email.UnzipAttachments method, which unzips and replaces any Zip file attachments with their expanded contents. For example, if an email contains a single Zip holding three files, that Zip attachment is replaced by the three files as individual attachments. This example loads an email and expands its Zip attachments.

Background: Senders often bundle several files into one .zip to keep a message tidy or to compress large content. UnzipAttachments reverses that automatically, so downstream processing can work with the individual files directly rather than having to detect, extract, and re-inject archive contents. It is the inverse of ZipAttachments.

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Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoEmail
    String sTemp1
    Integer iTemp1

    Move False To iSuccess

    //  Demonstrates the UnzipAttachments method, which unzips and replaces any Zip file
    //  attachments with their expanded contents.  For example, a single Zip containing 3 files
    //  is replaced by those 3 files as individual attachments.

    Get Create (RefClass(cComChilkatEmail)) To hoEmail
    If (Not(IsComObjectCreated(hoEmail))) Begin
        Send CreateComObject of hoEmail
    End

    Get ComLoadEml Of hoEmail "qa_data/eml/with_zip_attachment.eml" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoEmail To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumAttachments Of hoEmail To iTemp1
    Showln "NumAttachments before = " iTemp1

    //  Expand any Zip attachments in place.
    Get ComUnzipAttachments Of hoEmail To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoEmail To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumAttachments Of hoEmail To iTemp1
    Showln "NumAttachments after = " iTemp1

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


End_Procedure