# frozen_string_literal: false

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#

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# irb/init.rb - irb initialize module

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# $Release Version: 0.9.6$

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# $Revision$

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# by Keiju ISHITSUKA(keiju@ruby-lang.org)

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#

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# --

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#

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#

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#

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module IRB # :nodoc:

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# initialize config

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def IRB.setup(ap_path, argv: ::ARGV)

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IRB.init_config(ap_path)

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IRB.init_error

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IRB.parse_opts(argv: argv)

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IRB.run_config

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IRB.load_modules

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unless @CONF[:PROMPT][@CONF[:PROMPT_MODE]]

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fail UndefinedPromptMode, @CONF[:PROMPT_MODE]

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end

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end

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# @CONF default setting

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def IRB.init_config(ap_path)

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# class instance variables

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@TRACER_INITIALIZED = false

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# default configurations

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unless ap_path and @CONF[:AP_NAME]

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ap_path = File.join(File.dirname(File.dirname(__FILE__)), "irb.rb")

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end

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@CONF[:AP_NAME] = File::basename(ap_path, ".rb")

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@CONF[:IRB_NAME] = "irb"

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@CONF[:IRB_LIB_PATH] = File.dirname(__FILE__)

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@CONF[:RC] = true

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@CONF[:LOAD_MODULES] = []

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@CONF[:IRB_RC] = nil

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@CONF[:USE_SINGLELINE] = false unless defined?(ReadlineInputMethod)

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@CONF[:USE_COLORIZE] = true

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@CONF[:INSPECT_MODE] = true

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@CONF[:USE_TRACER] = false

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@CONF[:USE_LOADER] = false

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@CONF[:IGNORE_SIGINT] = true

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@CONF[:IGNORE_EOF] = false

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@CONF[:ECHO] = nil

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@CONF[:ECHO_ON_ASSIGNMENT] = nil

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@CONF[:OMIT_ON_ASSIGNMENT] = nil

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@CONF[:VERBOSE] = nil

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@CONF[:EVAL_HISTORY] = nil

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@CONF[:SAVE_HISTORY] = 1000

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@CONF[:BACK_TRACE_LIMIT] = 16

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@CONF[:PROMPT] = {

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:NULL => {

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:PROMPT_I => nil,

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:PROMPT_N => nil,

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:PROMPT_S => nil,

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:PROMPT_C => nil,

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:RETURN => "%s\n"

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},

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:DEFAULT => {

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:PROMPT_I => "%N(%m):%03n:%i> ",

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:PROMPT_N => "%N(%m):%03n:%i> ",

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:PROMPT_S => "%N(%m):%03n:%i%l ",

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:PROMPT_C => "%N(%m):%03n:%i* ",

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:RETURN => "=> %s\n"

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},

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:CLASSIC => {

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:PROMPT_I => "%N(%m):%03n:%i> ",

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:PROMPT_N => "%N(%m):%03n:%i> ",

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:PROMPT_S => "%N(%m):%03n:%i%l ",

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:PROMPT_C => "%N(%m):%03n:%i* ",

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:RETURN => "%s\n"

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},

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:SIMPLE => {

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:PROMPT_I => ">> ",

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:PROMPT_N => ">> ",

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:PROMPT_S => "%l> ",

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:PROMPT_C => "?> ",

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:RETURN => "=> %s\n"

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},

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:INF_RUBY => {

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:PROMPT_I => "%N(%m):%03n:%i> ",

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:PROMPT_N => nil,

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:PROMPT_S => nil,

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:PROMPT_C => nil,

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:RETURN => "%s\n",

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:AUTO_INDENT => true

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},

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:XMP => {

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:PROMPT_I => nil,

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:PROMPT_N => nil,

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:PROMPT_S => nil,

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:PROMPT_C => nil,

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:RETURN => " ==>%s\n"

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}

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}

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@CONF[:PROMPT_MODE] = (STDIN.tty? ? :DEFAULT : :NULL)

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@CONF[:AUTO_INDENT] = true

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@CONF[:CONTEXT_MODE] = 3 # use binding in function on TOPLEVEL_BINDING

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@CONF[:SINGLE_IRB] = false

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@CONF[:LC_MESSAGES] = Locale.new

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@CONF[:AT_EXIT] = []

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end

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def IRB.init_error

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@CONF[:LC_MESSAGES].load("irb/error.rb")

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end

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# option analyzing

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def IRB.parse_opts(argv: ::ARGV)

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load_path = []

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while opt = argv.shift

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case opt

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when "-f"

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@CONF[:RC] = false

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when "-d"

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$DEBUG = true

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$VERBOSE = true

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when "-w"

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$VERBOSE = true

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when /^-W(.+)?/

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opt = $1 || argv.shift

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case opt

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when "0"

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$VERBOSE = nil

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when "1"

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$VERBOSE = false

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else

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$VERBOSE = true

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end

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when /^-r(.+)?/

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opt = $1 || argv.shift

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@CONF[:LOAD_MODULES].push opt if opt

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when /^-I(.+)?/

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opt = $1 || argv.shift

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load_path.concat(opt.split(File::PATH_SEPARATOR)) if opt

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when '-U'

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set_encoding("UTF-8", "UTF-8")

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when /^-E(.+)?/, /^--encoding(?:=(.+))?/

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opt = $1 || argv.shift

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set_encoding(*opt.split(':', 2))

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when "--inspect"

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if /^-/ !~ argv.first

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@CONF[:INSPECT_MODE] = argv.shift

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else

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@CONF[:INSPECT_MODE] = true

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end

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when "--noinspect"

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@CONF[:INSPECT_MODE] = false

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when "--singleline", "--readline", "--legacy"

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@CONF[:USE_SINGLELINE] = true

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when "--nosingleline", "--noreadline"

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@CONF[:USE_SINGLELINE] = false

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when "--multiline", "--reidline"

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@CONF[:USE_MULTILINE] = true

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when "--nomultiline", "--noreidline"

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@CONF[:USE_MULTILINE] = false

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when "--echo"

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@CONF[:ECHO] = true

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when "--noecho"

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@CONF[:ECHO] = false

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when "--echo-on-assignment"

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@CONF[:ECHO_ON_ASSIGNMENT] = true

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when "--noecho-on-assignment"

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@CONF[:ECHO_ON_ASSIGNMENT] = false

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when "--omit-on-assignment"

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@CONF[:OMIT_ON_ASSIGNMENT] = true

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when "--noomit-on-assignment"

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@CONF[:OMIT_ON_ASSIGNMENT] = false

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when "--verbose"

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@CONF[:VERBOSE] = true

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when "--noverbose"

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@CONF[:VERBOSE] = false

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when "--colorize"

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@CONF[:USE_COLORIZE] = true

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when "--nocolorize"

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@CONF[:USE_COLORIZE] = false

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when /^--prompt-mode(?:=(.+))?/, /^--prompt(?:=(.+))?/

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opt = $1 || argv.shift

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prompt_mode = opt.upcase.tr("-", "_").intern

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@CONF[:PROMPT_MODE] = prompt_mode

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when "--noprompt"

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@CONF[:PROMPT_MODE] = :NULL

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when "--inf-ruby-mode"

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@CONF[:PROMPT_MODE] = :INF_RUBY

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when "--sample-book-mode", "--simple-prompt"

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@CONF[:PROMPT_MODE] = :SIMPLE

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when "--tracer"

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@CONF[:USE_TRACER] = true

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when /^--back-trace-limit(?:=(.+))?/

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@CONF[:BACK_TRACE_LIMIT] = ($1 || argv.shift).to_i

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when /^--context-mode(?:=(.+))?/

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@CONF[:CONTEXT_MODE] = ($1 || argv.shift).to_i

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when "--single-irb"

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@CONF[:SINGLE_IRB] = true

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when "-v", "--version"

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print IRB.version, "\n"

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exit 0

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when "-h", "--help"

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require_relative "help"

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IRB.print_usage

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exit 0

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when "--"

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if opt = argv.shift

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@CONF[:SCRIPT] = opt

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$0 = opt

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end

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break

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when /^-/

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fail UnrecognizedSwitch, opt

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else

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@CONF[:SCRIPT] = opt

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$0 = opt

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break

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end

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end

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load_path.collect! do |path|

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/\A\.\// =~ path ? path : File.expand_path(path)

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end

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$LOAD_PATH.unshift(*load_path)

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end

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# running config

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def IRB.run_config

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if @CONF[:RC]

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begin

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load rc_file

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rescue LoadError, Errno::ENOENT

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rescue # StandardError, ScriptError

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print "load error: #{rc_file}\n"

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print $!.class, ": ", $!, "\n"

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for err in $@[0, $@.size - 2]

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print "\t", err, "\n"

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end

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end

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end

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end

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IRBRC_EXT = "rc"

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def IRB.rc_file(ext = IRBRC_EXT)

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if !@CONF[:RC_NAME_GENERATOR]

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rc_file_generators do |rcgen|

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@CONF[:RC_NAME_GENERATOR] ||= rcgen

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if File.exist?(rcgen.call(IRBRC_EXT))

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@CONF[:RC_NAME_GENERATOR] = rcgen

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break

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end

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end

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end

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case rc_file = @CONF[:RC_NAME_GENERATOR].call(ext)

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when String

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return rc_file

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else

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fail IllegalRCNameGenerator

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end

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end

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# enumerate possible rc-file base name generators

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def IRB.rc_file_generators

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if irbrc = ENV["IRBRC"]

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yield proc{|rc| rc == "rc" ? irbrc : irbrc+rc}

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end

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if xdg_config_home = ENV["XDG_CONFIG_HOME"]

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irb_home = File.join(xdg_config_home, "irb")

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unless File.exist? irb_home

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require 'fileutils'

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FileUtils.mkdir_p irb_home

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end

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yield proc{|rc| irb_home + "/irb#{rc}"}

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end

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if home = ENV["HOME"]

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yield proc{|rc| home+"/.irb#{rc}"}

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end

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current_dir = Dir.pwd

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yield proc{|rc| current_dir+"/.config/irb/irb#{rc}"}

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yield proc{|rc| current_dir+"/.irb#{rc}"}

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yield proc{|rc| current_dir+"/irb#{rc.sub(/\A_?/, '.')}"}

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yield proc{|rc| current_dir+"/_irb#{rc}"}

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yield proc{|rc| current_dir+"/$irb#{rc}"}

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end

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# loading modules

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def IRB.load_modules

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for m in @CONF[:LOAD_MODULES]

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begin

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require m

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rescue LoadError => err

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warn "#{err.class}: #{err}", uplevel: 0

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end

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end

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end

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DefaultEncodings = Struct.new(:external, :internal)

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class << IRB

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private

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def set_encoding(extern, intern = nil, override: true)

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verbose, $VERBOSE = $VERBOSE, nil

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Encoding.default_external = extern unless extern.nil? || extern.empty?

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Encoding.default_internal = intern unless intern.nil? || intern.empty?

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[$stdin, $stdout, $stderr].each do |io|

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io.set_encoding(extern, intern)

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end

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if override

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@CONF[:LC_MESSAGES].instance_variable_set(:@override_encoding, extern)

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else

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@CONF[:LC_MESSAGES].instance_variable_set(:@encoding, extern)

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end

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ensure

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$VERBOSE = verbose

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end

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end

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end

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