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# frozen_string_literal: true
require 'aruba/platforms/unix_environment_variables'
# Aruba
module Aruba
# Platforms
module Platforms
# Windows is case-insensitive when it accesses its environment variables.
#
# To work around this we turn all of the environment variable keys to
# upper-case so that aruba is ensured that accessing environment variables
# with upper-case keys will always work. See the following examples.
#
# @example Setting Windows environment variables using mixed case
# C:>set Path
# C:>Path=.;.\bin;c:\rubys\ruby-2.1.6-p336\bin;
# C:>set PATH
# C:>Path=.;.\bin;c:\rubys\ruby-2.1.6-p336\bin;
#
# @example If you access environment variables through ENV, you can access
# values no matter the case of the key:
# ENV["Path"] # => ".;.\bin;c:\rubys\ruby-2.1.6-p336\bin;"
# ENV["PATH"] # => ".;.\bin;c:\rubys\ruby-2.1.6-p336\bin;"
#
# @example But if you copy the ENV to a hash, Ruby treats the keys as case sensitive:
# env_copy = ENV.to_hash
# # => {
# "ALLUSERSPROFILE"=>
# "C:\\ProgramData",
# "ANSICON"=>"119x1000 (119x58)",
# "ANSICON_DEF"=>"7",
# APPDATA" => "C:\\Users\\blorf\\AppData\\Roaming", ....
# }
# env["Path"]
# # => ".;.\bin;c:\rubys\ruby-2.1.6-p336\bin;"
# env["PATH"]
# # => nil
class WindowsEnvironmentVariables < UnixEnvironmentVariables
def initialize(env = ENV)
super(upcase_env env)
end
def update(other_env, &block)
super(upcase_env(other_env), &block)
end
def fetch(name, default = UnixEnvironmentVariables::UNDEFINED)
super(name.upcase, default)
end
def key?(name)
super(name.upcase)
end
def [](name)
super(name.upcase)
end
def []=(name, value)
super(name.upcase, value)
end
def append(name, value)
super(name.upcase, value)
end
def prepend(name, value)
super(name.upcase, value)
end
def delete(name)
super(name.upcase)
end
def self.hash_from_env
upcase_env(ENV)
end
def self.upcase_env(env)
env.to_h.transform_keys { |k| k.to_s.upcase }
end
private
def upcase_env(env)
self.class.upcase_env(env)
end
end
end
end
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