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|
#!/usr/bin/env ruby
#
# irbtkw.rb : IRB console with Ruby/Tk
#
# by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
#
release = '2008/03/08'
require 'tk'
begin
require 'tktextio'
rescue LoadError
require File.join(File.dirname(File.expand_path(__FILE__)), 'tktextio.rb')
end
require 'irb'
if TkCore::WITH_ENCODING
else
# $KCODE setup
case Tk.encoding
when 'shiftjis', 'cp932'
$KCODE='SJIS'
when 'euc-jp'
$KCODE='EUC'
when 'utf-8', 'unicode'
$KCODE='UTF8'
else
# unknown
end
end
# console setup
top = TkToplevel.new(:title=>'IRB console')
top.protocol(:WM_DELETE_WINDOW){ Tk.exit }
case (Tk.windowingsystem)
when 'win32'
fnt = ['MS Gothic', '-12']
else
fnt = ['courier', '-12']
end
console = TkTextIO.new(top, :mode=>:console,
:width=>80).pack(:side=>:left,
:expand=>true, :fill=>:both)
console.yscrollbar(TkScrollbar.new(top, :width=>10).pack(:before=>console,
:side=>:right,
:expand=>false,
:fill=>:y))
# save original I/O
out = $stdout
err = $stderr
irb_thread = nil
ev_loop = Thread.new{
begin
Tk.mainloop
ensure
$stdout = out
$stderr = err
irb_thread.kill if irb_thread
end
}
# window position control
root = Tk.root
r_x = root.winfo_rootx
r_y = root.winfo_rooty
r_w = root.winfo_width
t_x = top.winfo_rootx
t_y = top.winfo_rooty
t_w = top.winfo_width
delta = 10
ratio = 0.8
s_w = (ratio * root.winfo_screenwidth).to_i
if r_x < t_x
r_x, t_x = t_x, r_x
end
if t_x + t_w + r_w + delta < s_w
r_x = t_x + t_w + delta
elsif t_w + r_w + delta < s_w
r_x = s_w - r_w
t_x = r_x - t_w
else
r_x = s_w - r_w
t_x = 0
end
root.geometry("+#{r_x}+#{r_y}")
top.geometry("+#{t_x}+#{t_y}")
root.raise
console.focus
# I/O setup
$stdin = console
$stdout = console
$stderr = console
# dummy for rubyw.exe on Windows
def STDIN.tty?
true
end
# IRB setup
IRB.init_config(nil)
IRB.conf[:USE_READLINE] = false
IRB.init_error
irb = IRB::Irb.new
IRB.conf[:MAIN_CONTEXT] = irb.context
class IRB::StdioInputMethod
def gets
prompt = "\n" << @prompt
$stdin.instance_eval{
flush
@prompt = prompt
_set_console_line
@prompt = nil
_see_pos
}
@line[@line_no += 1] = $stdin.gets
end
end
# IRB start
$stdout.print("*** IRB console on Ruby/Tk (#{release}) ")
irb_thread = Thread.new{
catch(:IRB_EXIT){
loop {
begin
irb.eval_input
rescue Exception
end
}
}
}
console.bind('Control-c'){
console.insert('end', "^C\n")
irb_thread.raise RubyLex::TerminateLineInput
}
irb_thread.join
# exit
ev_loop.kill
Tk.exit
|
