(Ruby) Add XMP MetaData to JPG or TIFF

Demonstrates how to add XMP metadata to a JPG or TIFF image that doesn't already have XMP metadata.

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

require 'chilkat'

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

xmp = Chilkat::CkXmp.new()

# The first step is to create a new XMP document, which is nothing
# more than XML.  The NewXmp method returns an XML document with
# the standard XMP boilerplate.  
# xml is a CkXml
xml = xmp.NewXmp()

# Add some properties...
success = xmp.AddSimpleStr(xml,"Iptc4xmpCore:Chilkat","Blah blah")
# If you wish to view the XML, save it to a file and review it
# with a text editor:
success = xml.SaveXml("newXmp.xml")
if (success != true)
    print xml.lastErrorText() + "\n";
    exit
end

# To add the XMP to the JPG (or TIFF), simply load the JPG,
# append the XMP, and save:
success = xmp.LoadAppFile("scream.jpg")
if (success != true)
    print xmp.lastErrorText() + "\n";
    exit
end

success = xmp.Append(xml)
if (success != true)
    print xmp.lastErrorText() + "\n";
    exit
end

success = xmp.SaveAppFile("screamOut.jpg")
if (success != true)
    print xmp.lastErrorText() + "\n";
    exit
end