Script to look in each subfolder containing ebook files and select the 'best' candidates for chucking on an iPad

ebook_select_ipad_versions.rb

#!/usr/bin/env ruby
require "fileutils"

output_folder_name = "_ipad_selection"
output = File.expand_path File.join(Dir.pwd, output_folder_name)
selected = []

# Gather folders to look at
folders = Dir.glob(%w{*/*.epub */*.pdf}).map {|file| File.dirname file}
folders.delete_if { | item | item.match(/^#{output_folder_name}/)}
folders.uniq!

# Make sure the output directory exists
Dir.mkdir output unless File.exists? output

# Copy the best file versions in
folders.each {
	| folder |
	epubs = Dir.glob(File.join(folder, "*.epub"))
	pdfs = Dir.glob(File.join(folder, "*.pdf"))

	chosen = epubs.length > 0 ? epubs : pdfs
	chosen.each {
		| file |
		target = File.join output, File.basename(file)
		if File.exists? target
			puts "Skipping '#{file}' because it's already in the output folder"
		else
			FileUtils.cp file, output
		end
	}
}