Gecko [ herbhavenuk.co.uk ]

Name	Size	Permission	Date
benchmark	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
bigdecimal	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
cgi	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
csv	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
did_you_mean	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
digest	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
drb	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
erb	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
error_highlight	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
fiddle	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
forwardable	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
io	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
json	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
logger	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
net	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
objspace	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
open3	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
openssl	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
optparse	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
psych	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
racc	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
random	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
reline	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
rinda	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
ripper	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
set	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
syslog	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
unicode_normalize	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
uri	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
vendor_ruby	[ DIR ]	drwxr-xr-x	2025-04-28 17:55
yaml	[ DIR ]	drwxr-xr-x	2025-08-15 19:34
English.rb	6.11 KB	-rw-r--r--	2025-04-28 17:55
abbrev.rb	3.45 KB	-rw-r--r--	2025-04-28 17:55
base64.rb	3.35 KB	-rw-r--r--	2025-04-28 17:55
benchmark.rb	18.4 KB	-rw-r--r--	2025-04-28 17:55
bigdecimal.rb	24 B	-rw-r--r--	2025-04-28 17:55
cgi.rb	9.83 KB	-rw-r--r--	2025-04-28 17:55
coverage.rb	368 B	-rw-r--r--	2025-04-28 17:55
csv.rb	92.41 KB	-rw-r--r--	2025-04-28 17:55
date.rb	1.1 KB	-rw-r--r--	2025-04-28 17:55
delegate.rb	11.68 KB	-rw-r--r--	2025-04-28 17:55
did_you_mean.rb	5.31 KB	-rw-r--r--	2025-04-28 17:55
digest.rb	3.3 KB	-rw-r--r--	2025-04-28 17:55
drb.rb	50 B	-rw-r--r--	2025-04-28 17:55
erb.rb	28.74 KB	-rw-r--r--	2025-04-28 17:55
error_highlight.rb	84 B	-rw-r--r--	2025-04-28 17:55
expect.rb	2.17 KB	-rw-r--r--	2025-04-28 17:55
fiddle.rb	2.11 KB	-rw-r--r--	2025-04-28 17:55
fileutils.rb	47.74 KB	-rw-r--r--	2025-04-28 17:55
find.rb	2.5 KB	-rw-r--r--	2025-04-28 17:55
forwardable.rb	8.98 KB	-rw-r--r--	2025-04-28 17:55
getoptlong.rb	15.46 KB	-rw-r--r--	2025-04-28 17:55
ipaddr.rb	20.58 KB	-rw-r--r--	2025-04-28 17:55
json.rb	19.29 KB	-rw-r--r--	2025-04-28 17:55
kconv.rb	5.72 KB	-rw-r--r--	2025-04-28 17:55
logger.rb	16.54 KB	-rw-r--r--	2025-04-28 17:55
mkmf.rb	88.12 KB	-rw-r--r--	2025-04-28 17:55
monitor.rb	6.76 KB	-rw-r--r--	2025-04-28 17:55
mutex_m.rb	2.33 KB	-rw-r--r--	2025-04-28 17:55
objspace.rb	2.66 KB	-rw-r--r--	2025-04-28 17:55
observer.rb	6.38 KB	-rw-r--r--	2025-04-28 17:55
open-uri.rb	24.88 KB	-rw-r--r--	2025-04-28 17:55
open3.rb	22.11 KB	-rw-r--r--	2025-04-28 17:55
openssl.rb	1.03 KB	-rw-r--r--	2025-04-28 17:55
optionparser.rb	59 B	-rw-r--r--	2025-04-28 17:55
optparse.rb	58.82 KB	-rw-r--r--	2025-04-28 17:55
ostruct.rb	13.78 KB	-rw-r--r--	2025-04-28 17:55
pathname.rb	16.47 KB	-rw-r--r--	2025-04-28 17:55
pp.rb	16.69 KB	-rw-r--r--	2025-04-28 17:55
prettyprint.rb	15.9 KB	-rw-r--r--	2025-04-28 17:55
pstore.rb	14.73 KB	-rw-r--r--	2025-04-28 17:55
psych.rb	24.61 KB	-rw-r--r--	2025-04-28 17:55
racc.rb	137 B	-rw-r--r--	2025-04-28 17:55
readline.rb	189 B	-rw-r--r--	2025-04-28 17:55
reline.rb	17.67 KB	-rw-r--r--	2025-04-28 17:55
resolv-replace.rb	1.76 KB	-rw-r--r--	2025-04-28 17:55
resolv.rb	74.18 KB	-rw-r--r--	2025-04-28 17:55
ripper.rb	2.44 KB	-rw-r--r--	2025-04-28 17:55
securerandom.rb	2.06 KB	-rw-r--r--	2025-04-28 17:55
set.rb	25.43 KB	-rw-r--r--	2025-04-28 17:55
shellwords.rb	7.09 KB	-rw-r--r--	2025-04-28 17:55
singleton.rb	4.08 KB	-rw-r--r--	2025-04-28 17:55
socket.rb	43.65 KB	-rw-r--r--	2025-04-28 17:55
tempfile.rb	12.43 KB	-rw-r--r--	2025-04-28 17:55
time.rb	23.72 KB	-rw-r--r--	2025-04-28 17:55
timeout.rb	4.07 KB	-rw-r--r--	2025-04-28 17:55
tmpdir.rb	4.44 KB	-rw-r--r--	2025-04-28 17:55
tsort.rb	14.3 KB	-rw-r--r--	2025-04-28 17:55
un.rb	11.06 KB	-rw-r--r--	2025-04-28 17:55
uri.rb	3.06 KB	-rw-r--r--	2025-04-28 17:55
weakref.rb	1.46 KB	-rw-r--r--	2025-04-28 17:55
yaml.rb	1.8 KB	-rw-r--r--	2025-04-28 17:55

Rename

# frozen_string_literal: true
#
# = 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.unpack1("m")
  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.unpack1("m0")
  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 '/'.
  # Note that the result can still contain '='.
  # You can remove the padding by setting +padding+ as false.
  def urlsafe_encode64(bin, padding: true)
    str = strict_encode64(bin)
    str.chomp!("==") or str.chomp!("=") unless padding
    str.tr!("+/", "-_")
    str
  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 '/'.
  #
  # The padding character is optional.
  # This method accepts both correctly-padded and unpadded input.
  # Note that it still rejects incorrectly-padded input.
  def urlsafe_decode64(str)
    # NOTE: RFC 4648 does say nothing about unpadded input, but says that
    # "the excess pad characters MAY also be ignored", so it is inferred that
    # unpadded input is also acceptable.
    if !str.end_with?("=") && str.length % 4 != 0
      str = str.ljust((str.length + 3) & ~3, "=")
      str.tr!("-_", "+/")
    else
      str = str.tr("-_", "+/")
    end
    strict_decode64(str)
  end
end