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Swift 3,4,5... Examples

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(Swift 3,4,5...) MIME Content-Disposition Header Field

Explains the Content-Disposition header field and the properties used for setting or updating.

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

func chilkatTest() {
    // The Content-Disposition header field provides a suggestion to the receiver for how the content is to be processed.
    // The standard dispositions are "inline" and "attachment".  

    // A disposition of "attachment" indicates the content is something to be saved to a file and not processed (such as rendering for viewing inline).
    // A disposition of "inline" indicates the content should be processed (displayed) inline with the other parts of the MIME message.

    // For example, an email client could handle a JPG image based on the disposition.  If the disposition is "attachment",
    // the email client (such as Thunderbird, GMail, or Outlook) might simply list the JPG image as one of the email's attachments,
    // but won't display the JPG image.  If the disposition is "inline", the email client might display the JPG image, but not list
    // it as an attachment.

    // The Content-Disposition header field can also include a "filename" attribute.  This is the suggested default filename if the content
    // is to be saved to a file.

    var success: Bool
    let mime = CkoMime()!

    // The Content-Disposition header field can be set or modified in two ways.
    // 1) By setting the Disposition and Filename properties.

    // 2) By setting the entire contents of the Content-Disposition header with the SetHeaderField method.
    //    Setting the Content-Disposition header automatically updates the Disposition and Filename properties.

    // For example:
    mime.disposition = "attachment"
    mime.filename = "ghost.jpg"

    // The Content-Disposition header field contains this:
    //     Content-Disposition: attachment; filename="ghost.jpg"
    print("\(mime.getEntireHead()!)")
    print("-")

    // If we set the entire header field..
    mime.setHeaderField("Content-Disposition", value: "attachment; filename=\"zombie.jpg\"")
    // The Content-Disposition header field now contains this:
    //     Content-Disposition: attachment; filename="zombie.jpg"
    print("\(mime.getEntireHead()!)")
    print("-")

    // Notice how the Filename property has been updated
    print("Filename property: \(mime.filename!)")
    print("-")

    // To change a particular attribute value, set the property.
    mime.filename = "skeleton.jpg"
    print("\(mime.getEntireHead()!)")
    print("-")

    // To remove the filename from the Content-Disposition header,
    // set the property to an empty string.
    mime.filename = ""
    print("\(mime.getEntireHead()!)")
    print("-")

}

 

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