(Go) 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.)

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

    xmp := chilkat.NewXmp()

    // Load a JPG or TIF image file.
    success := xmp.LoadAppFile("qa_data/xmp/AJ_123642_1511.tif")
    if success != true {
        fmt.Println(xmp.LastErrorText())
        xmp.DisposeXmp()
        return
    }

    fmt.Println("Num embedded XMP docs: ", xmp.NumEmbedded())

    // This example assumes that XMP metadata is already present in the image file.
    if xmp.NumEmbedded() == 0 {
        fmt.Println("No XMP metadata already exists..")
        xmp.DisposeXmp()
        return
    }

    // Get the XMP metadata.
    // xml is a Xml
    xml := xmp.GetEmbedded(0)

    // Show the XML:
    fmt.Println(*xml.GetXml())

    // Update (overwrite) a string property.
    xmp.AddSimpleStr(xml,"NumberofTimes","123")

    success = xmp.SaveAppFile("qa_output/updated.tif")
    if success != true {
        fmt.Println(xmp.LastErrorText())
        xmp.DisposeXmp()
        return
    }

    fmt.Println("Success.")

    xmp.DisposeXmp()