Base64#encode64

encode64(bin)

# File tmp/rubies/ruby-3.3.0/lib/base64.rb, line 219
def encode64(bin)
  [bin].pack("m")
end

Returns a string containing the RFC-2045-compliant Base64-encoding of bin.

Per RFC 2045, the returned string may contain the URL-unsafe characters + or /; see Encoding Character Set above:

Example

Base64.encode64("\xFB\xEF\xBE") # => "++++\n"
Base64.encode64("\xFF\xFF\xFF") # => "////\n"

The returned string may include padding; see Padding above.

Example

Base64.encode64('*') # => "Kg==\n"

The returned string ends with a newline character, and if sufficiently long will have one or more embedded newline characters; see Newlines above:

Example

Base64.encode64('*') # => "Kg==\n"
Base64.encode64('*' * 46)
# => "KioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq\nKg==\n"

The string to be encoded may itself contain newlines, which will be encoded as ordinary Base64:

Example

Base64.encode64("\n\n\n") # => "CgoK\n"
s = "This is line 1\nThis is line 2\n"
Base64.encode64(s) # => "VGhpcyBpcyBsaW5lIDEKVGhpcyBpcyBsaW5lIDIK\n"

See also #decode64 #strict_decode64 #strict_encode64 also in 3.2 · 3.1 · 3.0