84 lines
1.7 KiB
Ruby
84 lines
1.7 KiB
Ruby
# save-history.rb -
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# $Release Version: 0.9.5$
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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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require "readline"
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module IRB
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module HistorySavingAbility
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@RCS_ID='-$Id$-'
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end
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class Context
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def init_save_history
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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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def save_history
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IRB.conf[:SAVE_HISTORY]
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end
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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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def history_file
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IRB.conf[:HISTORY_FILE]
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end
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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
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include Readline
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def HistorySavingAbility.create_finalizer
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proc do
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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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open(history_file, 'w' ) do |f|
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hist = HISTORY.to_a
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f.puts(hist[-num..-1] || 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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def HistorySavingAbility.extended(obj)
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ObjectSpace.define_finalizer(obj, HistorySavingAbility.create_finalizer)
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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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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) do |f|
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f.each {|l| HISTORY << l.chomp}
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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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