зеркало из https://github.com/github/ruby.git
305 строки
7.6 KiB
Ruby
305 строки
7.6 KiB
Ruby
#
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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)
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IRB.init_config(ap_path)
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IRB.init_error
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IRB.parse_opts
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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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IRB.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[:MATH_MODE] = false
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@CONF[:USE_READLINE] = false unless defined?(ReadlineInputMethod)
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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[:VERBOSE] = nil
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@CONF[:EVAL_HISTORY] = nil
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@CONF[:SAVE_HISTORY] = nil
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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 => nil,
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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] = false
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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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@CONF[:DEBUG_LEVEL] = 0
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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
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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 "-m"
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@CONF[:MATH_MODE] = true
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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 "--readline"
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@CONF[:USE_READLINE] = true
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when "--noreadline"
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@CONF[:USE_READLINE] = 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 "--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 /^--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 /^--irb_debug(?:=(.+))?/
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@CONF[:DEBUG_LEVEL] = ($1 || ARGV.shift).to_i
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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 "irb/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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IRB.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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IRB.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 home = ENV["HOME"]
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yield proc{|rc| home+"/.irb#{rc}"}
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end
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home = Dir.pwd
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yield proc{|rc| home+"/.irb#{rc}"}
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yield proc{|rc| home+"/irb#{rc.sub(/\A_?/, '.')}"}
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yield proc{|rc| home+"/_irb#{rc}"}
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yield proc{|rc| home+"/$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.backtrace[0] << ":#{err.class}: #{err}"
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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)
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verbose, $VERBOSE = $VERBOSE, nil
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Encoding.default_external = extern unless extern.nil? || extern.empty?
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Encoding.default_internal = intern unless intern.nil? || intern.empty?
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@CONF[:ENCODINGS] = IRB::DefaultEncodings.new(extern, intern)
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[$stdin, $stdout, $stderr].each do |io|
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io.set_encoding(extern, intern)
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end
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@CONF[:LC_MESSAGES].instance_variable_set(:@encoding, extern)
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ensure
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$VERBOSE = verbose
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end
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end
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end
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