Gem force from https://rubygems.org/gems/pdf-writer, as ywesee does not want to rewrite its code to move to ruby 2.x
This library provides the ability to create PDF documents using only native Ruby libraries. There are several demo programs available in the demo/ directory. The canonical documentation for PDF::Writer is "manual.pdf", which can be generated using bin/techbook (just "techbook" for RubyGem users) and the manual file "manual.pwd".
Homepage:: http://rubyforge.org/projects/ruby-pdf/ Copyright:: 2003—2005, Austin Ziegler
This software is based on Adobe's PDF Reference, Fifth Edition, version 1.6. This and earlier editions are available from Adobe's PDF developer website[http://partners.adobe.com/public/developer/pdf/index_reference.html].
This gem version has been updated to work with Ruby 2.0. This is a maintenance effort only to support moving existing projects from Ruby 1.8 to 2.0. New project development should use Prawn[1] over PDF-Writer as it is actively maintained and is also the successor/rewrite of this library.
[1] http://prawn.majesticseacreature.com/
Please read the file LICENCE for licensing restrictions on this library, as well as important patent considerations.
PDF::Writer requires Ruby 1.8.2 or better, Color 1.4.0 or better, and Transaction::Simple 1.3.0 or better.