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174bc22570
(https://github.com/ruby/irb/pull/642) * Define RelineInputMethod::HISTORY The HistorySavingAbility module doesn't do anything if the input method class doesn't define HISTORY. -3ac96be660/lib/irb/history.rb (L10)-3ac96be660/lib/irb/history.rb (L34)This patch defines RelineInputMethod::HISTORY to avoid this. * Improve history-saving's ability check Instead of checking the existence of `input_method_class::HISTORY`, we should make every input method class declare if it supports history saving or not. Since the default value is `false`, it shouldn't break any custom input method that inherits from `IRB::InputMethod`.aec7a5b3f5
72 lines
2.3 KiB
Ruby
72 lines
2.3 KiB
Ruby
module IRB
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module HistorySavingAbility # :nodoc:
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def HistorySavingAbility.extended(obj)
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IRB.conf[:AT_EXIT].push proc{obj.save_history}
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obj.load_history
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obj
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end
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def load_history
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history = self.class::HISTORY
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if history_file = IRB.conf[:HISTORY_FILE]
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history_file = File.expand_path(history_file)
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end
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history_file = IRB.rc_file("_history") unless history_file
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if File.exist?(history_file)
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File.open(history_file, "r:#{IRB.conf[:LC_MESSAGES].encoding}") do |f|
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f.each { |l|
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l = l.chomp
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if self.class == RelineInputMethod and history.last&.end_with?("\\")
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history.last.delete_suffix!("\\")
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history.last << "\n" << l
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else
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history << l
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end
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}
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end
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@loaded_history_lines = history.size
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@loaded_history_mtime = File.mtime(history_file)
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end
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end
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def save_history
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history = self.class::HISTORY
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if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) != 0
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if history_file = IRB.conf[:HISTORY_FILE]
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history_file = File.expand_path(history_file)
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end
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history_file = IRB.rc_file("_history") unless history_file
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# Change the permission of a file that already exists[BUG #7694]
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begin
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if File.stat(history_file).mode & 066 != 0
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File.chmod(0600, history_file)
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end
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rescue Errno::ENOENT
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rescue Errno::EPERM
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return
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rescue
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raise
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end
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if File.exist?(history_file) &&
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File.mtime(history_file) != @loaded_history_mtime
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history = history[@loaded_history_lines..-1] if @loaded_history_lines
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append_history = true
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end
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File.open(history_file, (append_history ? 'a' : 'w'), 0o600, encoding: IRB.conf[:LC_MESSAGES]&.encoding) do |f|
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hist = history.map{ |l| l.split("\n").join("\\\n") }
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unless append_history
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begin
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hist = hist.last(num) if hist.size > num and num > 0
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rescue RangeError # bignum too big to convert into `long'
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# Do nothing because the bignum should be treated as inifinity
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end
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end
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f.puts(hist)
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end
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end
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end
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end
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end
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