Module: IRB::HistorySavingAbility
- Included in:
- ReadlineInputMethod, RelineInputMethod
- Defined in:
- lib/irb/history.rb
Overview
:nodoc:
Instance Method Summary collapse
- #load_history ⇒ Object
- #reset_history_counter ⇒ Object
- #save_history ⇒ Object
- #support_history_saving? ⇒ Boolean
Instance Method Details
permalink #load_history ⇒ Object
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# File 'lib/irb/history.rb', line 43 def load_history history_file = History.history_file return unless File.exist?(history_file.to_s) history = self.class::HISTORY File.open(history_file, "r:#{IRB.conf[:LC_MESSAGES].encoding}") do |f| f.each { |l| l = l.chomp if self.class == RelineInputMethod and history.last&.end_with?("\\") history.last.delete_suffix!("\\") history.last << "\n" << l else history << l end } end @loaded_history_lines = history.size @loaded_history_mtime = File.mtime(history_file) end |
permalink #reset_history_counter ⇒ Object
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# File 'lib/irb/history.rb', line 39 def reset_history_counter @loaded_history_lines = self.class::HISTORY.size end |
permalink #save_history ⇒ Object
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# File 'lib/irb/history.rb', line 64 def save_history return unless History.save_history? return unless (history_file = History.history_file) unless ensure_history_file_writable(history_file) warn <<~WARN Can't write history to #{History.history_file.inspect} due to insufficient permissions. Please verify the value of `IRB.conf[:HISTORY_FILE]`. Ensure the folder exists and that both the folder and file (if it exists) are writable. WARN return end history = self.class::HISTORY.to_a if File.exist?(history_file) && File.mtime(history_file) != @loaded_history_mtime history = history[@loaded_history_lines..-1] if @loaded_history_lines append_history = true end File.open(history_file, (append_history ? "a" : "w"), 0o600, encoding: IRB.conf[:LC_MESSAGES]&.encoding) do |f| hist = history.map { |l| l.scrub.split("\n").join("\\\n") } unless append_history || History.infinite? # Check size before slicing because array.last(huge_number) raises RangeError. hist = hist.last(History.save_history) if hist.size > History.save_history end f.puts(hist) end end |
permalink #support_history_saving? ⇒ Boolean
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# File 'lib/irb/history.rb', line 35 def support_history_saving? true end |