# Console::Input::Curses.pm - raw input layer for Curses
# v2007.1122 Chris Pressey, Cat's Eye Technologies

# Copyright (c)2001-2007, Chris Pressey, Cat's Eye Technologies.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#  1. Redistributions of source code must retain the above copyright
#     notices, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notices, this list of conditions, and the following disclaimer in
#     the documentation and/or other materials provided with the
#     distribution.
#  3. Neither the names of the copyright holders nor the names of their
#     contributors may be used to endorse or promote products derived
#     from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

BEGIN
{
  use Curses;

  initscr;
  if (has_colors)
  {
    start_color;
  }
  nonl;
  intrflush(0);
  keypad(1);
  nodelay(1);
  refresh;

  cbreak; # optimistic
  noecho; # optimistic

  $::SIG{__DIE__} = sub($) {
    my $msg = shift;
    nocbreak;
    echo;
    endwin;
    die $msg;
  }
}

sub getkey
{
  my $key = '';
  refresh;
  # cbreak; # pessimistic
  # noecho; # pessimistic
  sysread(STDIN, $key, 1);
  # nocbreak; # pessimistic
  # echo;     # pessimistic
  return $key;
}

END
{
  nocbreak; # optimistic
  echo;     # optimistic
  endwin;
}

1;

### END of Curses.pm ###