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/*
Terminal management xterm and rxvt support
Copyright (C) 1995-2022
Free Software Foundation, Inc.
Written by:
Andrew Borodin <aborodin@vmail.ru>, 2009.
This file is part of the Midnight Commander.
The Midnight Commander is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
The Midnight Commander is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file win.c
* \brief Source: Terminal management xterm and rxvt support
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#else
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#endif
#include "lib/global.h"
#include "lib/util.h" /* is_printable() */
#include "tty-internal.h"
#include "tty.h" /* tty_gotoyx, tty_print_char */
#include "win.h"
/*** global variables ****************************************************************************/
char *smcup = NULL;
char *rmcup = NULL;
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
static gboolean rxvt_extensions = FALSE;
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/* my own weird protocol base 16 - paul */
static int
rxvt_getc (void)
{
int r;
unsigned char c;
while (read (0, &c, 1) != 1);
if (c == '\n')
return -1;
r = (c - 'A') * 16;
while (read (0, &c, 1) != 1);
r += (c - 'A');
return r;
}
/* --------------------------------------------------------------------------------------------- */
static int
anything_ready (void)
{
fd_set fds;
struct timeval tv;
FD_ZERO (&fds);
FD_SET (0, &fds);
tv.tv_sec = 0;
tv.tv_usec = 0;
return select (1, &fds, 0, 0, &tv);
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
void
show_rxvt_contents (int starty, unsigned char y1, unsigned char y2)
{
unsigned char *k;
int bytes, i, j, cols = 0;
y1 += mc_global.keybar_visible != 0 ? 1 : 0; /* i don't knwo why we need this - paul */
y2 += mc_global.keybar_visible != 0 ? 1 : 0;
while (anything_ready ())
tty_lowlevel_getch ();
/* my own weird protocol base 26 - paul */
printf (ESC_STR "CL%c%c%c%c\n", (y1 / 26) + 'A', (y1 % 26) + 'A', (y2 / 26) + 'A',
(y2 % 26) + 'A');
bytes = (y2 - y1) * (COLS + 1) + 1; /* *should* be the number of bytes read */
j = 0;
k = g_malloc (bytes);
while (TRUE)
{
int c;
c = rxvt_getc ();
if (c < 0)
break;
if (j < bytes)
k[j++] = c;
for (cols = 1;; cols++)
{
c = rxvt_getc ();
if (c < 0)
break;
if (j < bytes)
k[j++] = c;
}
}
for (i = 0; i < j; i++)
{
if ((i % cols) == 0)
tty_gotoyx (starty + (i / cols), 0);
tty_print_char (is_printable (k[i]) ? k[i] : ' ');
}
g_free (k);
}
/* --------------------------------------------------------------------------------------------- */
gboolean
look_for_rxvt_extensions (void)
{
static gboolean been_called = FALSE;
if (!been_called)
{
const char *e = getenv ("RXVT_EXT");
rxvt_extensions = ((e != NULL) && (strcmp (e, "1.0") == 0));
been_called = TRUE;
}
if (rxvt_extensions)
mc_global.tty.console_flag = '\004';
return rxvt_extensions;
}
/* --------------------------------------------------------------------------------------------- */
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