From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/tk/sample/irbtkw.rbw | 156 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/irbtkw.rbw

(limited to 'jni/ruby/ext/tk/sample/irbtkw.rbw')

diff --git a/jni/ruby/ext/tk/sample/irbtkw.rbw b/jni/ruby/ext/tk/sample/irbtkw.rbw
new file mode 100644
index 0000000..b75ebca
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/irbtkw.rbw
@@ -0,0 +1,156 @@
+#!/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
-- 
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