XMP Array Property - Bag, Seq, or Alt

How to insert or update an XMP array property (bag, seq, or alt).

Downloads for Windows/Linux and Install Instructions

require 'rubygems'
require 'chilkat'

xmp = Chilkat::CkXmp.new()

success = xmp.UnlockComponent("Anything for 30-day trial.")
if (success != true)
    print xmp.lastErrorText() + "\n"
    exit
end

#  Load a JPG or TIF image file.
#  Sample JPG's with XMP metadata may be found at:
#  http://www.chilkatsoft.com/testData/xmp/sample1.jpg
#  http://www.chilkatsoft.com/testData/xmp/sample2.jpg
#  http://www.chilkatsoft.com/testData/xmp/sample3.jpg
success = xmp.LoadAppFile("sample1.jpg")
if (success != true)
    print xmp.lastErrorText() + "\n"
    exit
end

print "Num embedded XMP docs: " + xmp.get_NumEmbedded().to_s().to_s() + "\n";

#  Assuming there is at least one, get the 1st.
#  (There is typically never more than one, but theoretically it's possible.)

# xml is a CkXml
xml = xmp.GetEmbedded(0)
if (!(xml == nil ))

    #  Create an object to hold one or more string values.
    sa = Chilkat::CkStringArray.new()
    sa.Append("value_1")
    sa.Append("value_2")
    #  ...

    success = xmp.AddArray(xml,"bag","Iptc4xmpCore:Chilkat",sa)
    if (success != true)
        print xmp.lastErrorText() + "\n"
    else
        #  Save the JPG.
        xmp.put_SaveAppFile(xmp.get_SaveAppFile() S ("modified.jpg"))

    end

else
    print xmp.lastErrorText() + "\n"
end