require "readline"
module IRB
module HistorySavingAbility @RCS_ID='-$Id: save-history.rb 39049 2013-02-04 23:04:09Z zzak $-'
end
class Context
def init_save_history# :nodoc:
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.extended(obj)
IRB.conf[:AT_EXIT].push proc{obj.save_history}
obj.load_history
obj
end
def load_history
if history_file = IRB.conf[:HISTORY_FILE]
history_file = File.expand_path(history_file)
end
history_file = IRB.rc_file("_history") unless history_file
if File.exist?(history_file)
open(history_file) do |f|
f.each {|l| HISTORY << l.chomp}
end
end
end
def save_history
if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) > 0
if history_file = IRB.conf[:HISTORY_FILE]
history_file = File.expand_path(history_file)
end
history_file = IRB.rc_file("_history") unless history_file
begin
if File.stat(history_file).mode & 066 != 0
File.chmod(0600, history_file)
end
rescue Errno::ENOENT
rescue
raise
end
open(history_file, 'w', 0600 ) do |f|
hist = HISTORY.to_a
f.puts(hist[-num..-1] || hist)
end
end
end
end
end