PureBasic

Check if a MIME Part is Text

Demonstrates the Chilkat Mime.IsText method, which returns whether the Content-Type begins with text/. It takes no arguments and applies to the current part.

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

Background: IsText is the broad check for any textual part — text/plain, text/html, text/xml, and so on — which is what decides whether it is safe to decode the body to a string. For binary parts, decode to bytes instead. Use the narrower predicates when you need the exact text subtype.

Chilkat PureBasic Downloads

Download Chilkat for PureBasic

PureBasic

IncludeFile "CkMime.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the Mime.IsText method, which returns whether the Content-Type begins with text/.  It takes no arguments and applies to the current
    ;  part.  This example iterates the parts of a multipart message and reports which ones match.

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

    success = CkMime::ckLoadMimeFile(mime,"qa_data/multipart_message.eml")
    If success = 0
        Debug CkMime::ckLastErrorText(mime)
        CkMime::ckDispose(mime)
        ProcedureReturn
    EndIf

    n.i = CkMime::ckNumParts(mime)
    part.i = CkMime::ckCreate()
    If part.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    i.i
    For i = 0 To n - 1
        success = CkMime::ckPartAt(mime,i,part)
        If success = 0
            Debug CkMime::ckLastErrorText(mime)
            CkMime::ckDispose(mime)
            CkMime::ckDispose(part)
            ProcedureReturn
        EndIf

        If CkMime::ckIsText(part)
            Debug "Part " + Str(i) + " (" + CkMime::ckContentType(part) + ") is text."
        EndIf

    Next


    CkMime::ckDispose(mime)
    CkMime::ckDispose(part)


    ProcedureReturn
EndProcedure