Swift

Check if a MIME Part is Plain Text

Demonstrates the Chilkat Mime.IsPlainText method, which returns whether the Content-Type is exactly text/plain. 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: Inside a multipart/alternative, this is how you pick out the plain-text rendering — the fallback to show when HTML cannot be displayed, or the version to index for search. It is the specific counterpart to IsHtml.

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Swift


func chilkatTest() {
    var success: Bool = false

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

    let mime = CkoMime()!
    success = mime.loadFile(path: "qa_data/multipart_message.eml")
    if success == false {
        print("\(mime.lastErrorText!)")
        return
    }

    var n: Int = mime.numParts.intValue
    let part = CkoMime()!
    var i: Int
    for i = 0; i <= n - 1; i++ {
        success = mime.part(at: i, subPart: part)
        if success == false {
            print("\(mime.lastErrorText!)")
            return
        }

        if part.isPlainText() {
            print("Part \(i) (\(part.contentType!)) is plain text.")
        }

    }


}