Module: IRB

Defined in:
lib/live_console.rb

Overview

We need to make a couple of changes to the IRB module to account for using a weird I/O method and re-starting IRB from time to time.

Defined Under Namespace

Classes: Context, Irb

Constant Summary collapse

ARGV = 
[]

Class Method Summary collapse

Class Method Details

.start_with_io(io, bind, &block) ⇒ Object

Overridden a la FXIrb to accomodate our needs.



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
 
# File 'lib/live_console.rb', line 163

def IRB.start_with_io(io, bind, &block)
  unless @inited
    setup '/dev/null'
    IRB.parse_opts
    IRB.load_modules
    @inited = true
  end

  #Redirect stdout and stderr to cover output of Ruby commands like puts
  $stdout.sync=true
  $stderr.sync=true
  $stdout.reopen(io.output)
  $stderr.reopen(io.output)
  ws = IRB::WorkSpace.new(bind)

  @CONF[:PROMPT_MODE] = :DEFAULT
  #Remove the context from all prompts-can be too long depending on binding
  @CONF[:PROMPT][:DEFAULT][:PROMPT_I] = "%N():%03n:%i> "
  @CONF[:PROMPT][:DEFAULT][:PROMPT_N] = "%N():%03n:%i> "
  #Add > to S and C as they don't get picked up by telnet prompt scan
  @CONF[:PROMPT][:DEFAULT][:PROMPT_S] = "%N():%03n:%i%l> "
  @CONF[:PROMPT][:DEFAULT][:PROMPT_C] = "%N():%03n:%i*> "

  @CONF[:USE_READLINE] = false
  irb = Irb.new(ws, io, io)
  bind ||= IRB::Frame.top(1) rescue TOPLEVEL_BINDING

  @CONF[:IRB_RC].call(irb.context) if @CONF[:IRB_RC]
  @CONF[:MAIN_CONTEXT] = irb.context

  catch(:IRB_EXIT) {
    begin
      irb.eval_input
    rescue StandardError => e
      irb.print([e.to_s, e.backtrace].flatten.join("\n") + "\n")
      retry
    end
  }
  irb.print "\n"
end