Extract XMP MetaData as XML

Demonstrates how to open a JPG or TIF image file and extract the XMP metadata as XML.

Download Chilkat Ruby Library

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 ))
    success = xml.SaveXml("xmpMetaData.xml")
    if (success != true)
        print xml.lastErrorText() + "\n"
    end

    print "Success." + "\n"

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