Xbase++

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.

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LOCAL nSuccess
LOCAL oMime
LOCAL n
LOCAL oPart
LOCAL i

nSuccess := 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.

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

n := oMime:NumParts
oPart := CreateObject("Chilkat.Mime")

FOR i := 0 TO n - 1
    nSuccess := oMime:PartAt(i, oPart)
    IF (nSuccess == 0)
        ? oMime:LastErrorText
        oMime:destroy()
        oPart:destroy()
        RETURN
    ENDIF

    IF (oPart:IsText())
        ? "Part " + Str(i) + " (" + oPart:ContentType + ") is text."
    ENDIF

NEXT

oMime:destroy()
oPart:destroy()