sinisterchipmunk/LICENSE

## LICENSE
Copyright (C) 2011 by Colin MacKenzie IV

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

## tar.rb
require 'rubygems'
require 'rubygems/package'
require 'zlib'
require 'fileutils'

module Util
  module Tar
    # Creates a tar file in memory recursively
    # from the given path.
    #
    # Returns a StringIO whose underlying String
    # is the contents of the tar file.
    def tar(path)
      tarfile = StringIO.new("")
      Gem::Package::TarWriter.new(tarfile) do |tar|
        Dir[File.join(path, "**/*")].each do |file|
          mode = File.stat(file).mode
          relative_file = file.sub /^#{Regexp::escape path}\/?/, ''

          if File.directory?(file)
            tar.mkdir relative_file, mode
          else
            tar.add_file relative_file, mode do |tf|
              File.open(file, "rb") { |f| tf.write f.read }
            end
          end
        end
      end

      tarfile.rewind
      tarfile
    end

    # gzips the underlying string in the given StringIO,
    # returning a new StringIO representing the
    # compressed file.
    def gzip(tarfile)
      gz = StringIO.new("")
      z = Zlib::GzipWriter.new(gz)
      z.write tarfile.string
      z.close # this is necessary!

      # z was closed to write the gzip footer, so
      # now we need a new StringIO
      StringIO.new gz.string
    end

    # un-gzips the given IO, returning the
    # decompressed version as a StringIO
    def ungzip(tarfile)
      z = Zlib::GzipReader.new(tarfile)
      unzipped = StringIO.new(z.read)
      z.close
      unzipped
    end

    # untars the given IO into the specified
    # directory
    def untar(io, destination)
      Gem::Package::TarReader.new io do |tar|
        tar.each do |tarfile|
          destination_file = File.join destination, tarfile.full_name

          if tarfile.directory?
            FileUtils.mkdir_p destination_file
          else
            destination_directory = File.dirname(destination_file)
            FileUtils.mkdir_p destination_directory unless File.directory?(destination_directory)
            File.open destination_file, "wb" do |f|
              f.print tarfile.read
            end
          end
        end
      end
    end
  end
end


### Usage Example: ###
#
# include Util::Tar
#
# io = tar("./Desktop")   # io is a TAR of files
# gz = gzip(io)           # gz is a TGZ
#
# io = ungzip(gz)         # io is a TAR
# untar(io, "./untarred") # files are untarred
#
	Copyright (C) 2011 by Colin MacKenzie IV

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
	require 'rubygems'
	require 'rubygems/package'
	require 'zlib'
	require 'fileutils'

	module Util
	module Tar
	# Creates a tar file in memory recursively
	# from the given path.
	#
	# Returns a StringIO whose underlying String
	# is the contents of the tar file.
	def tar(path)
	tarfile = StringIO.new("")
	Gem::Package::TarWriter.new(tarfile) do \|tar\|
	Dir[File.join(path, "*/")].each do \|file\|
	mode = File.stat(file).mode
	relative_file = file.sub /^#{Regexp::escape path}\/?/, ''

	if File.directory?(file)
	tar.mkdir relative_file, mode
	else
	tar.add_file relative_file, mode do \|tf\|
	File.open(file, "rb") { \|f\| tf.write f.read }
	end
	end
	end
	end

	tarfile.rewind
	tarfile
	end

	# gzips the underlying string in the given StringIO,
	# returning a new StringIO representing the
	# compressed file.
	def gzip(tarfile)
	gz = StringIO.new("")
	z = Zlib::GzipWriter.new(gz)
	z.write tarfile.string
	z.close # this is necessary!

	# z was closed to write the gzip footer, so
	# now we need a new StringIO
	StringIO.new gz.string
	end

	# un-gzips the given IO, returning the
	# decompressed version as a StringIO
	def ungzip(tarfile)
	z = Zlib::GzipReader.new(tarfile)
	unzipped = StringIO.new(z.read)
	z.close
	unzipped
	end

	# untars the given IO into the specified
	# directory
	def untar(io, destination)
	Gem::Package::TarReader.new io do \|tar\|
	tar.each do \|tarfile\|
	destination_file = File.join destination, tarfile.full_name

	if tarfile.directory?
	FileUtils.mkdir_p destination_file
	else
	destination_directory = File.dirname(destination_file)
	FileUtils.mkdir_p destination_directory unless File.directory?(destination_directory)
	File.open destination_file, "wb" do \|f\|
	f.print tarfile.read
	end
	end
	end
	end
	end
	end
	end


	### Usage Example: ###
	#
	# include Util::Tar
	#
	# io = tar("./Desktop") # io is a TAR of files
	# gz = gzip(io) # gz is a TGZ
	#
	# io = ungzip(gz) # io is a TAR
	# untar(io, "./untarred") # files are untarred
	#