Swift

Check if a MIME Part is an Image

Demonstrates the Chilkat Mime.IsImage method, which returns whether the Content-Type begins with image/. 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: This locates image parts — inline graphics in a multipart/related message, or image attachments — so your code can preview thumbnails, extract them, or handle them differently from documents. It matches any image/ subtype, including image/svg+xml.

Chilkat Swift Downloads

Download Chilkat for Swift

Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Mime.IsImage method, which returns whether the Content-Type begins with image/.  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.isImage() {
            print("Part \(i) (\(part.contentType!)) is an image.")
        }

    }


}