newlib-cygwin/winsup/utils/setmetamode.c

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/* setmetamode.c
Copyright 2006 Red Hat Inc.
Written by Kazuhiro Fujieda <fujieda@jaist.ac.jp>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <cygwin/kd.h>
static const char version[] = "$Revision$";
static char *prog_name;
static void
usage (void)
{
fprintf (stderr, "Usage: %s [metabit|escprefix]\n"
" Without argument, it shows the current meta key mode.\n"
" metabit|meta|bit The meta key sets the top bit of the character.\n"
" escprefix|esc|prefix The meta key sends an escape prefix.\n",
prog_name);
}
static void
error (void)
{
fprintf (stderr,
"%s: The standard input isn't a console device.\n",
prog_name);
}
int
main (int ac, char *av[])
{
int param;
prog_name = strrchr (av[0], '/');
if (!prog_name)
prog_name = strrchr (av[0], '\\');
if (!prog_name)
prog_name = av[0];
else
prog_name++;
if (ac < 2)
{
if (ioctl (0, KDGKBMETA, &param) < 0)
{
error ();
return 1;
}
if (param == 0x03)
puts ("metabit");
else
puts ("escprefix");
return 0;
}
if (!strcmp ("meta", av[1]) || !strcmp ("bit", av[1])
|| !strcmp ("metabit", av[1]))
param = 0x03;
else if (!strcmp ("esc", av[1]) || !strcmp ("prefix", av[1])
|| !strcmp ("escprefix", av[1]))
param = 0x04;
else
{
usage ();
return 1;
}
if (ioctl (0, KDSKBMETA, param) < 0)
{
error ();
return 1;
}
return 0;
}