Module: IRB::History

Defined in:
lib/irb/ext/history.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.file ⇒ Object

Returns the value of attribute file.



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# File 'lib/irb/ext/history.rb', line 12

def file
  @file
end

.max_entries_in_overview ⇒ Object

Returns the value of attribute max_entries_in_overview.



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# File 'lib/irb/ext/history.rb', line 12

def max_entries_in_overview
  @max_entries_in_overview
end

Class Method Details

.clear! ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 33

def clear!
  File.open(file, "w") { |f| f << "" }
  Readline::HISTORY.clear
end

.context ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 20

def context
  IRB::Driver.current.context
end

.history(number_of_entries = max_entries_in_overview) ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 38

def history(number_of_entries = max_entries_in_overview)
  history_size = Readline::HISTORY.size
  start_index = 0
  
  # always remove one extra, because that's the `history' command itself
  if history_size <= number_of_entries
    end_index = history_size - 2
  else
    end_index = history_size - 2
    start_index = history_size - number_of_entries - 1
  end
  
  start_index.upto(end_index) do |i|
    puts "#{i}: #{Readline::HISTORY[i]}"
  end
end

.history!(entry_or_range) ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 55

def history!(entry_or_range)
  # we don't want to execute history! again
  context.clear_buffer
  
  if entry_or_range.is_a?(Range)
    entry_or_range.to_a.each do |i|
      context.input_line(Readline::HISTORY[i])
    end
  else
    context.input_line(Readline::HISTORY[entry_or_range])
  end
end

.input(source) ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 24

def input(source)
  File.open(file, "a") { |f| f.puts(source) }
  source
end

.setup ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 14

def setup
  to_a.each do |source|
    Readline::HISTORY.push(source)
  end if Readline::HISTORY.to_a.empty?
end

.to_a ⇒ Object 



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# File 'lib/irb/ext/history.rb', line 29

def to_a
  File.exist?(file) ? File.read(file).split("\n") : []
end