File Collection Program by Date

collect_by_date.rb

#!/usr/bin/env ruby

require 'optparse'

# Default parameters
from = Dir.pwd
dry = false

summary = <<EOT
File collection Program by Date

Usage: #{File::basename($0)} [options] target_directory
EOT

opts = OptionParser.new(summary)

opts.on("-f", "--from=VAL") do |v|
	begin
		if (File.directory?(v))
			from = v
		end
	rescue
		p $!
	end
end
opts.on("-n", "--dry-run") do
	dry = true
end

begin
	opts.parse!
	if (File.directory?(ARGV[0]))
		to = ARGV[0]
	else
		throw "boo"
	end
rescue
	p $!
	print opts.help
	exit
end

Dir.foreach(from) do |file|
	begin
		fst = File.stat("#{from}/#{file}")
		date = fst.mtime.strftime('%Y%m%d')
		
		if fst.file?
			mkdir = false
			if File.directory?("#{to}/#{date}")
				# do nothing
			elsif File.exist?("#{to}/#{date}")
				throw "File #{date} exists in #{to}"
			else
				mkdir = true
			end

			if dry
				puts "try mkdir '#{to}/#{date}'." if mkdir
				puts "try moving '#{from}/#{file}' -> '#{to}/#{date}'."
			else
				Dir.mkdir("#{to}/#{date}") if mkdir
				File.rename("#{from}/#{file}", "#{to}/#{date}/#{file}")
			end
		end
	rescue
		p $!
	end
end