PowerBuilder

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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integer li_rc
integer li_Success
oleobject loo_Email

li_Success = 0

//  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.

loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")
if li_rc < 0 then
    destroy loo_Email
    MessageBox("Error","Connecting to COM object failed")
    return
end if

li_Success = loo_Email.LoadEml("qa_data/eml/with_zip_attachment.eml")
if li_Success = 0 then
    Write-Debug loo_Email.LastErrorText
    destroy loo_Email
    return
end if

Write-Debug "NumAttachments before = " + string(loo_Email.NumAttachments)

//  Expand any Zip attachments in place.
li_Success = loo_Email.UnzipAttachments()
if li_Success = 0 then
    Write-Debug loo_Email.LastErrorText
    destroy loo_Email
    return
end if

Write-Debug "NumAttachments after = " + string(loo_Email.NumAttachments)

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


destroy loo_Email