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PATH: opt / alt / ruby22 / lib64 / ruby / 2.2.0

#
# = 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 characters.
  #
  #    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

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