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PATH: opt / alt / ruby20 / lib64 / ruby / 2.0.0

#
# = base64.rb: methods for base64-encoding and -decoding strings
#

# The Base64 module provides for the encoding (#encode64, #strict_encode64,
# #urlsafe_encode64) and decoding (#decode64, #strict_decode64,
# #urlsafe_decode64) of binary data using a Base64 representation.
#
# == Example
#
# A simple encoding and decoding.
#
#     require "base64"
#
#     enc   = Base64.encode64('Send reinforcements')
#                         # -> "U2VuZCByZWluZm9yY2VtZW50cw==\n"
#     plain = Base64.decode64(enc)
#                         # -> "Send reinforcements"
#
# The purpose of using base64 to encode data is that it translates any
# binary data into purely printable characters.

module Base64
  module_function

# Returns the Base64-encoded version of +bin+.
  # This method complies with RFC 2045.
  # Line feeds are added to every 60 encoded charactors.
  #
  #    require 'base64'
  #    Base64.encode64("Now is the time for all good coders\nto learn Ruby")
  #
  # <i>Generates:</i>
  #
  #    Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4g
  #    UnVieQ==
  def encode64(bin)
    [bin].pack("m")
  end

# Returns the Base64-decoded version of +str+.
  # This method complies with RFC 2045.
  # Characters outside the base alphabet are ignored.
  #
  #   require 'base64'
  #   str = 'VGhpcyBpcyBsaW5lIG9uZQpUaGlzIG' +
  #         'lzIGxpbmUgdHdvClRoaXMgaXMgbGlu' +
  #         'ZSB0aHJlZQpBbmQgc28gb24uLi4K'
  #   puts Base64.decode64(str)
  #
  # <i>Generates:</i>
  #
  #    This is line one
  #    This is line two
  #    This is line three
  #    And so on...
  def decode64(str)
    str.unpack("m").first
  end

# Returns the Base64-encoded version of +bin+.
  # This method complies with RFC 4648.
  # No line feeds are added.
  def strict_encode64(bin)
    [bin].pack("m0")
  end

# Returns the Base64-decoded version of +str+.
  # This method complies with RFC 4648.
  # ArgumentError is raised if +str+ is incorrectly padded or contains
  # non-alphabet characters.  Note that CR or LF are also rejected.
  def strict_decode64(str)
    str.unpack("m0").first
  end

# Returns the Base64-encoded version of +bin+.
  # This method complies with ``Base 64 Encoding with URL and Filename Safe
  # Alphabet'' in RFC 4648.
  # The alphabet uses '-' instead of '+' and '_' instead of '/'.
  def urlsafe_encode64(bin)
    strict_encode64(bin).tr("+/", "-_")
  end

# Returns the Base64-decoded version of +str+.
  # This method complies with ``Base 64 Encoding with URL and Filename Safe
  # Alphabet'' in RFC 4648.
  # The alphabet uses '-' instead of '+' and '_' instead of '/'.
  def urlsafe_decode64(str)
    strict_decode64(str.tr("-_", "+/"))
  end
end

[+] rinda
[+] yaml
[-] rational.rb [edit]
[-] matrix.rb [edit]
[+] rdoc
[-] shell.rb [edit]
[-] ostruct.rb [edit]
[-] scanf.rb [edit]
[+] ripper
[+] dl
[-] gserver.rb [edit]
[-] rdoc.rb [edit]
[-] getoptlong.rb [edit]
[-] thread.rb [edit]
[-] sync.rb [edit]
[-] delegate.rb [edit]
[-] open-uri.rb [edit]
[-] json.rb [edit]
[-] rubygems.rb [edit]
[-] openssl.rb [edit]
[+] json
[-] debug.rb [edit]
[+] irb
[-] digest.rb [edit]
[-] yaml.rb [edit]
[-] forwardable.rb [edit]
[-] weakref.rb [edit]
[-] benchmark.rb [edit]
[-] profiler.rb [edit]
[-] uri.rb [edit]
[-] English.rb [edit]
[+] syslog
[-] xmlrpc.rb [edit]
[-] timeout.rb [edit]
[+] rbconfig
[-] tracer.rb [edit]
[-] resolv.rb [edit]
[+] uri
[-] tsort.rb [edit]
[-] find.rb [edit]
[-] logger.rb [edit]
[-] psych.rb [edit]
[+] psych
[-] ubygems.rb [edit]
[-] profile.rb [edit]
[-] optparse.rb [edit]
[+] matrix
[-] pp.rb [edit]
[+] test
[-] date.rb [edit]
[-] cmath.rb [edit]
[-] ripper.rb [edit]
[-] fiddle.rb [edit]
[+] drb
[+] rake
[+] webrick
[-] cgi.rb [edit]
[-] pathname.rb [edit]
[+] xmlrpc
[-] mutex_m.rb [edit]
[+] rss
[+] racc
[-] complex.rb [edit]
[+] ..
[-] prettyprint.rb [edit]
[-] csv.rb [edit]
[-] kconv.rb [edit]
[-] securerandom.rb [edit]
[+] fiddle
[-] abbrev.rb [edit]
[-] resolv-replace.rb [edit]
[+] digest
[-] mathn.rb [edit]
[+] rexml
[-] e2mmap.rb [edit]
[-] shellwords.rb [edit]
[-] rss.rb [edit]
[-] time.rb [edit]
[+] openssl
[+] date
[-] dl.rb [edit]
[-] fileutils.rb [edit]
[-] socket.rb [edit]
[+] net
[-] monitor.rb [edit]
[-] tempfile.rb [edit]
[-] un.rb [edit]
[-] mkmf.rb [edit]
[-] base64.rb [edit]
[-] thwait.rb [edit]
[-] webrick.rb [edit]
[-] erb.rb [edit]
[-] rake.rb [edit]
[+] shell
[-] expect.rb [edit]
[-] open3.rb [edit]
[+] cgi
[-] tmpdir.rb [edit]
[-] ipaddr.rb [edit]
[-] pstore.rb [edit]
[-] singleton.rb [edit]
[+] rubygems
[-] set.rb [edit]
[-] observer.rb [edit]
[-] drb.rb [edit]
[-] irb.rb [edit]
[-] prime.rb [edit]
[+] x86_64-linux
[+] optparse