Xbase++

Save All MIME Attachments to Files

Demonstrates the Chilkat Mime.PartsToFiles method, which recursively traverses the MIME tree and saves each part having a nonempty filename parameter to a directory. The first argument is the destination directory and the second is a StringTable that receives the saved filenames.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This extracts every named attachment from a message in one call, walking the whole tree so it finds attachments nested inside multipart containers. It saves only parts that declare a filename — inline body parts without one are skipped — and reports what it wrote via the StringTable, which is handy for logging or follow-up processing. The destination directory must already exist.

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LOCAL nSuccess
LOCAL oMime
LOCAL oSavedFiles
LOCAL n
LOCAL i
LOCAL cName

nSuccess := 0

oMime := CreateObject("Chilkat.Mime")
nSuccess := oMime:LoadMimeFile("qa_data/multipart_message.eml")
IF (nSuccess == 0)
    ? oMime:LastErrorText
    oMime:destroy()
    RETURN
ENDIF

//  Recursively traverse the MIME tree and save each part that has a nonempty "filename" parameter
//  to a directory.  The 1st argument is the destination directory and the 2nd is a StringTable
//  that receives the saved filenames.
oSavedFiles := CreateObject("Chilkat.StringTable")
nSuccess := oMime:PartsToFiles("qa_output/attachments", oSavedFiles)
IF (nSuccess == 0)
    ? oMime:LastErrorText
    oMime:destroy()
    oSavedFiles:destroy()
    RETURN
ENDIF

n := oSavedFiles:Count
? "Saved " + Str(n) + " files:"

FOR i := 0 TO n - 1
    cName := oSavedFiles:StringAt(i)
    IF (oSavedFiles:LastMethodSuccess == 0)
        ? oSavedFiles:LastErrorText
        oMime:destroy()
        oSavedFiles:destroy()
        RETURN
    ENDIF

    ? cName
NEXT

oMime:destroy()
oSavedFiles:destroy()