131 lines
3.8 KiB
Ruby
131 lines
3.8 KiB
Ruby
# frozen_string_literal: false
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# save-history.rb -
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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
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module HistorySavingAbility # :nodoc:
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end
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class Context
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def init_save_history# :nodoc:
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unless (class<<@io;self;end).include?(HistorySavingAbility)
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@io.extend(HistorySavingAbility)
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end
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end
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# A copy of the default <code>IRB.conf[:SAVE_HISTORY]</code>
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def save_history
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IRB.conf[:SAVE_HISTORY]
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end
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remove_method(:save_history=) if method_defined?(:save_history=)
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# Sets <code>IRB.conf[:SAVE_HISTORY]</code> to the given +val+ and calls
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# #init_save_history with this context.
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#
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# Will store the number of +val+ entries of history in the #history_file
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#
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# Add the following to your +.irbrc+ to change the number of history
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# entries stored to 1000:
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#
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# IRB.conf[:SAVE_HISTORY] = 1000
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def save_history=(val)
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IRB.conf[:SAVE_HISTORY] = val
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if val
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main_context = IRB.conf[:MAIN_CONTEXT]
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main_context = self unless main_context
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main_context.init_save_history
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end
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end
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# A copy of the default <code>IRB.conf[:HISTORY_FILE]</code>
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def history_file
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IRB.conf[:HISTORY_FILE]
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end
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# Set <code>IRB.conf[:HISTORY_FILE]</code> to the given +hist+.
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def history_file=(hist)
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IRB.conf[:HISTORY_FILE] = hist
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end
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end
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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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return unless self.class.const_defined?(: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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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 == ReidlineInputMethod 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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return unless self.class.const_defined?(: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) && @loaded_history_mtime &&
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File.mtime(history_file) != @loaded_history_mtime
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history = history[@loaded_history_lines..-1]
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append_history = true
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end
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open(history_file, "#{append_history ? 'a' : 'w'}:#{IRB.conf[:LC_MESSAGES].encoding}", 0600) 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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