openxml/openxml-docx

#!/usr/bin/env ruby

# require "rails" # workaround: openxml-package uses `extract_options!`
$:.push Dir.pwd + "/lib"
require "openxml/docx"

document = OpenXml::Docx::Package.new

include OpenXml::Docx::Elements

text = Text.new("Some text that I want to include in my new OOXML document")

run = Run.new
run << text
paragraph = Paragraph.new
paragraph << run

document.document << paragraph

filename = "rocx_test_base.docx"
system "rm -f ~/Desktop/#{filename}" # -f so that we don't have an error if the file doesn't exist
document.save File.expand_path("~/Desktop/#{filename}")
exec "open ~/Desktop/#{filename}"