Tcl

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.

Chilkat Tcl Downloads

Download Chilkat for Tcl

Tcl


load ./chilkat.dll

set 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.

set email [new_CkEmail]

set success [CkEmail_LoadEml $email "qa_data/eml/with_zip_attachment.eml"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

puts "NumAttachments before = [CkEmail_get_NumAttachments $email]"

#  Expand any Zip attachments in place.
set success [CkEmail_UnzipAttachments $email]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

puts "NumAttachments after = [CkEmail_get_NumAttachments $email]"

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

delete_CkEmail $email