(Swift 3,4,5...) Update a String Property in XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and update the value of a string property. (If the string property does not already exist, it is created.)

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let xmp = CkoXmp()!

    // Load a JPG or TIF image file.
    var success: Bool = xmp.loadAppFile("qa_data/xmp/AJ_123642_1511.tif")
    if success != true {
        print("\(xmp.lastErrorText!)")
        return
    }

    print("Num embedded XMP docs: \(xmp.numEmbedded.intValue)")

    // This example assumes that XMP metadata is already present in the image file.
    if xmp.numEmbedded.intValue == 0 {
        print("No XMP metadata already exists..")
        return
    }

    // Get the XMP metadata.
    var xml: CkoXml?
    xml = xmp.getEmbedded(0)

    // Show the XML:
    print("\(xml!.getXml()!)")

    // Update (overwrite) a string property.
    xmp.addSimpleStr(xml, propName: "NumberofTimes", propVal: "123")

    success = xmp.saveAppFile("qa_output/updated.tif")
    if success != true {
        print("\(xmp.lastErrorText!)")
        return
    }

    print("Success.")

}