Ruby

XMP Array Property - Bag, Seq, or Alt

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

require 'chilkat'

success = false

# 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