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|
#!/usr/local/bin/ruby
#
# save-history.rb -
# $Release Version: 0.9.5$
# $Revision: 2906 $
# $Date: 2007-02-01 18:35:06 -0600 (Thu, 01 Feb 2007) $
# by Keiju ISHITSUKAkeiju@ruby-lang.org)
#
# --
#
#
#
require "readline"
module IRB
module HistorySavingAbility
@RCS_ID='-$Id: save-history.rb 2906 2007-02-02 00:35:06Z headius $-'
end
class Context
def init_save_history
unless (class<<@io;self;end).include?(HistorySavingAbility)
@io.extend(HistorySavingAbility)
end
end
def save_history
IRB.conf[:SAVE_HISTORY]
end
def save_history=(val)
IRB.conf[:SAVE_HISTORY] = val
if val
main_context = IRB.conf[:MAIN_CONTEXT]
main_context = self unless main_context
main_context.init_save_history
end
end
def history_file
IRB.conf[:HISTORY_FILE]
end
def history_file=(hist)
IRB.conf[:HISTORY_FILE] = hist
end
end
module HistorySavingAbility
include Readline
def HistorySavingAbility.create_finalizer
proc do
if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) > 0
if hf = IRB.conf[:HISTORY_FILE]
file = File.expand_path(hf)
end
file = IRB.rc_file("_history") unless file
open(file, 'w' ) do |f|
hist = HISTORY.to_a
f.puts(hist[-num..-1] || hist)
end
end
end
end
def HistorySavingAbility.extended(obj)
ObjectSpace.define_finalizer(obj, HistorySavingAbility.create_finalizer)
obj.load_history
obj
end
def load_history
hist = IRB.conf[:HISTORY_FILE]
hist = IRB.rc_file("_history") unless hist
if File.exist?(hist)
open(hist) do |f|
f.each {|l| HISTORY << l.chomp}
end
end
end
end
end
|
