(Ruby) XMP Array Property - Bag, Seq, or Alt

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

xmp = Chilkat::CkXmp.new()

# 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() + "\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 (xmp.get_LastMethodSuccess() == true)

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

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

    end

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