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# frozen_string_literal: true
if RUBY_VERSION < "3.3.0"
require "base64"
elsif !defined?(Base64)
module HTTP2
# require "base64" will not be a default gem after ruby 3.4.0
module Base64
module_function
def encode64(bin)
[bin].pack("m")
end
def decode64(str)
str.unpack1("m")
end
def strict_encode64(bin)
[bin].pack("m0")
end
def strict_decode64(str)
str.unpack1("m0")
end
def urlsafe_encode64(bin, padding: true)
str = strict_encode64(bin)
str.chomp!("==") or str.chomp!("=") unless padding
str.tr!("+/", "-_")
str
end
end
def urlsafe_decode64(str)
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
end
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