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# frozen_string_literal: false
#
# irb/init.rb - irb initialize module
# $Release Version: 0.9.6$
# $Revision: 65505 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#
module IRB # :nodoc:
# initialize config
def IRB.setup(ap_path, argv: ::ARGV)
IRB.init_config(ap_path)
IRB.init_error
IRB.parse_opts(argv: argv)
IRB.run_config
IRB.load_modules
unless @CONF[:PROMPT][@CONF[:PROMPT_MODE]]
IRB.fail(UndefinedPromptMode, @CONF[:PROMPT_MODE])
end
end
# @CONF default setting
def IRB.init_config(ap_path)
# class instance variables
@TRACER_INITIALIZED = false
# default configurations
unless ap_path and @CONF[:AP_NAME]
ap_path = File.join(File.dirname(File.dirname(__FILE__)), "irb.rb")
end
@CONF[:AP_NAME] = File::basename(ap_path, ".rb")
@CONF[:IRB_NAME] = "irb"
@CONF[:IRB_LIB_PATH] = File.dirname(__FILE__)
@CONF[:RC] = true
@CONF[:LOAD_MODULES] = []
@CONF[:IRB_RC] = nil
@CONF[:USE_READLINE] = false unless defined?(ReadlineInputMethod)
@CONF[:INSPECT_MODE] = true
@CONF[:USE_TRACER] = false
@CONF[:USE_LOADER] = false
@CONF[:IGNORE_SIGINT] = true
@CONF[:IGNORE_EOF] = false
@CONF[:ECHO] = nil
@CONF[:VERBOSE] = nil
@CONF[:EVAL_HISTORY] = nil
@CONF[:SAVE_HISTORY] = nil
@CONF[:BACK_TRACE_LIMIT] = 16
@CONF[:PROMPT] = {
:NULL => {
:PROMPT_I => nil,
:PROMPT_N => nil,
:PROMPT_S => nil,
:PROMPT_C => nil,
:RETURN => "%s\n"
},
:DEFAULT => {
:PROMPT_I => "%N(%m):%03n:%i> ",
:PROMPT_N => "%N(%m):%03n:%i> ",
:PROMPT_S => "%N(%m):%03n:%i%l ",
:PROMPT_C => "%N(%m):%03n:%i* ",
:RETURN => "=> %s\n"
},
:CLASSIC => {
:PROMPT_I => "%N(%m):%03n:%i> ",
:PROMPT_N => "%N(%m):%03n:%i> ",
:PROMPT_S => "%N(%m):%03n:%i%l ",
:PROMPT_C => "%N(%m):%03n:%i* ",
:RETURN => "%s\n"
},
:SIMPLE => {
:PROMPT_I => ">> ",
:PROMPT_N => ">> ",
:PROMPT_S => nil,
:PROMPT_C => "?> ",
:RETURN => "=> %s\n"
},
:INF_RUBY => {
:PROMPT_I => "%N(%m):%03n:%i> ",
:PROMPT_N => nil,
:PROMPT_S => nil,
:PROMPT_C => nil,
:RETURN => "%s\n",
:AUTO_INDENT => true
},
:XMP => {
:PROMPT_I => nil,
:PROMPT_N => nil,
:PROMPT_S => nil,
:PROMPT_C => nil,
:RETURN => " ==>%s\n"
}
}
@CONF[:PROMPT_MODE] = (STDIN.tty? ? :DEFAULT : :NULL)
@CONF[:AUTO_INDENT] = false
@CONF[:CONTEXT_MODE] = 3 # use binding in function on TOPLEVEL_BINDING
@CONF[:SINGLE_IRB] = false
@CONF[:LC_MESSAGES] = Locale.new
@CONF[:AT_EXIT] = []
@CONF[:DEBUG_LEVEL] = 0
end
def IRB.init_error
@CONF[:LC_MESSAGES].load("irb/error.rb")
end
# option analyzing
def IRB.parse_opts(argv: ::ARGV)
load_path = []
while opt = argv.shift
case opt
when "-f"
@CONF[:RC] = false
when "-d"
$DEBUG = true
$VERBOSE = true
when "-w"
$VERBOSE = true
when /^-W(.+)?/
opt = $1 || argv.shift
case opt
when "0"
$VERBOSE = nil
when "1"
$VERBOSE = false
else
$VERBOSE = true
end
when /^-r(.+)?/
opt = $1 || argv.shift
@CONF[:LOAD_MODULES].push opt if opt
when /^-I(.+)?/
opt = $1 || argv.shift
load_path.concat(opt.split(File::PATH_SEPARATOR)) if opt
when '-U'
set_encoding("UTF-8", "UTF-8")
when /^-E(.+)?/, /^--encoding(?:=(.+))?/
opt = $1 || argv.shift
set_encoding(*opt.split(':', 2))
when "--inspect"
if /^-/ !~ argv.first
@CONF[:INSPECT_MODE] = argv.shift
else
@CONF[:INSPECT_MODE] = true
end
when "--noinspect"
@CONF[:INSPECT_MODE] = false
when "--readline"
@CONF[:USE_READLINE] = true
when "--noreadline"
@CONF[:USE_READLINE] = false
when "--echo"
@CONF[:ECHO] = true
when "--noecho"
@CONF[:ECHO] = false
when "--verbose"
@CONF[:VERBOSE] = true
when "--noverbose"
@CONF[:VERBOSE] = false
when /^--prompt-mode(?:=(.+))?/, /^--prompt(?:=(.+))?/
opt = $1 || argv.shift
prompt_mode = opt.upcase.tr("-", "_").intern
@CONF[:PROMPT_MODE] = prompt_mode
when "--noprompt"
@CONF[:PROMPT_MODE] = :NULL
when "--inf-ruby-mode"
@CONF[:PROMPT_MODE] = :INF_RUBY
when "--sample-book-mode", "--simple-prompt"
@CONF[:PROMPT_MODE] = :SIMPLE
when "--tracer"
@CONF[:USE_TRACER] = true
when /^--back-trace-limit(?:=(.+))?/
@CONF[:BACK_TRACE_LIMIT] = ($1 || argv.shift).to_i
when /^--context-mode(?:=(.+))?/
@CONF[:CONTEXT_MODE] = ($1 || argv.shift).to_i
when "--single-irb"
@CONF[:SINGLE_IRB] = true
when /^--irb_debug(?:=(.+))?/
@CONF[:DEBUG_LEVEL] = ($1 || argv.shift).to_i
when "-v", "--version"
print IRB.version, "\n"
exit 0
when "-h", "--help"
require_relative "help"
IRB.print_usage
exit 0
when "--"
if opt = argv.shift
@CONF[:SCRIPT] = opt
$0 = opt
end
break
when /^-/
IRB.fail UnrecognizedSwitch, opt
else
@CONF[:SCRIPT] = opt
$0 = opt
break
end
end
load_path.collect! do |path|
/\A\.\// =~ path ? path : File.expand_path(path)
end
$LOAD_PATH.unshift(*load_path)
end
# running config
def IRB.run_config
if @CONF[:RC]
begin
load rc_file
rescue LoadError, Errno::ENOENT
rescue # StandardError, ScriptError
print "load error: #{rc_file}\n"
print $!.class, ": ", $!, "\n"
for err in $@[0, $@.size - 2]
print "\t", err, "\n"
end
end
end
end
IRBRC_EXT = "rc"
def IRB.rc_file(ext = IRBRC_EXT)
if !@CONF[:RC_NAME_GENERATOR]
rc_file_generators do |rcgen|
@CONF[:RC_NAME_GENERATOR] ||= rcgen
if File.exist?(rcgen.call(IRBRC_EXT))
@CONF[:RC_NAME_GENERATOR] = rcgen
break
end
end
end
case rc_file = @CONF[:RC_NAME_GENERATOR].call(ext)
when String
return rc_file
else
IRB.fail IllegalRCNameGenerator
end
end
# enumerate possible rc-file base name generators
def IRB.rc_file_generators
if irbrc = ENV["IRBRC"]
yield proc{|rc| rc == "rc" ? irbrc : irbrc+rc}
end
if home = ENV["HOME"]
yield proc{|rc| home+"/.irb#{rc}"}
end
home = Dir.pwd
yield proc{|rc| home+"/.irb#{rc}"}
yield proc{|rc| home+"/irb#{rc.sub(/\A_?/, '.')}"}
yield proc{|rc| home+"/_irb#{rc}"}
yield proc{|rc| home+"/$irb#{rc}"}
end
# loading modules
def IRB.load_modules
for m in @CONF[:LOAD_MODULES]
begin
require m
rescue LoadError => err
warn "#{err.class}: #{err}", uplevel: 0
end
end
end
DefaultEncodings = Struct.new(:external, :internal)
class << IRB
private
def set_encoding(extern, intern = nil)
verbose, $VERBOSE = $VERBOSE, nil
Encoding.default_external = extern unless extern.nil? || extern.empty?
Encoding.default_internal = intern unless intern.nil? || intern.empty?
@CONF[:ENCODINGS] = IRB::DefaultEncodings.new(extern, intern)
[$stdin, $stdout, $stderr].each do |io|
io.set_encoding(extern, intern)
end
@CONF[:LC_MESSAGES].instance_variable_set(:@encoding, extern)
ensure
$VERBOSE = verbose
end
end
end