# =GZip Simple # # A simplified interface to the gzip library +zlib+ (from the Ruby Standard Library.) # # Author: murphy (mail to murphy cYcnus de) # # Version: 0.2 (2005.may.28) # # ==Documentation # # See +GZip+ module and the +String+ extensions. # module GZip require 'zlib' # The default zipping level. 7 zips good and fast. DEFAULT_GZIP_LEVEL = 7 # Unzips the given string +s+. # # Example: # require 'gzip_simple' # print GZip.gunzip(File.read('adresses.gz')) def GZip.gunzip s Zlib::Inflate.inflate s end # Zips the given string +s+. # # Example: # require 'gzip_simple' # File.open('adresses.gz', 'w') do |file # file.write GZip.gzip('Mum: 0123 456 789', 9) # end # # If you provide a +level+, you can control how strong # the string is compressed: # - 0: no compression, only convert to gzip format # - 1: compress fast # - 7: compress more, but still fast (default) # - 8: compress more, slower # - 9: compress best, very slow def GZip.gzip s, level = DEFAULT_GZIP_LEVEL Zlib::Deflate.new(level).deflate s, Zlib::FINISH end end # String extensions to use the GZip module. # # The methods gzip and gunzip provide an even more simple # interface to the ZLib: # # # create a big string # x = 'a' * 1000 # # # zip it # x_gz = x.gzip # # # test the result # puts 'Zipped %d bytes to %d bytes.' % [x.size, x_gz.size] # #-> Zipped 1000 bytes to 19 bytes. # # # unzipping works # p x_gz.gunzip == x #-> true class String # Returns the string, unzipped. # See GZip.gunzip def gunzip GZip.gunzip self end # Replaces the string with its unzipped value. # See GZip.gunzip def gunzip! replace gunzip end # Returns the string, zipped. # +level+ is the gzip compression level, see GZip.gzip. def gzip level = GZip::DEFAULT_GZIP_LEVEL GZip.gzip self, level end # Replaces the string with its zipped value. # See GZip.gzip. def gzip!(*args) replace gzip(*args) end end if $0 == __FILE__ eval DATA.read, nil, $0, __LINE__+4 end __END__ #CODE # Testing / Benchmark x = 'a' * 1000 x_gz = x.gzip puts 'Zipped %d bytes to %d bytes.' % [x.size, x_gz.size] #-> Zipped 1000 bytes to 19 bytes. p x_gz.gunzip == x #-> true require 'benchmark' INFO = 'packed to %0.3f%%' # :nodoc: x = Array.new(100000) { rand(255).chr + 'aaaaaaaaa' + rand(255).chr }.join Benchmark.bm(10) do |bm| for level in 0..9 bm.report "zip #{level}" do $x = x.gzip level end puts INFO % [100.0 * $x.size / x.size] end bm.report 'zip' do $x = x.gzip end puts INFO % [100.0 * $x.size / x.size] bm.report 'unzip' do $x.gunzip end end git/commit/lib/tasks/redmine.rake?h=3.0.3'>commitdiffstats
path: root/lib/tasks/redmine.rake
blob: c0b2b1d9e298db4a01670352f93dd9b1da70f18b (plain) 
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