mirror of https://github.com/MidnightCommander/mc
163 lines
4.1 KiB
C
163 lines
4.1 KiB
C
/* Terminal management xterm and rxvt support
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Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2007, 2009 Free Software Foundation, Inc.
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Written by:
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Andrew Borodin <aborodin@vmail.ru>, 2009.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/** \file win.c
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* \brief Source: Terminal management xterm and rxvt support
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "lib/global.h"
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#include "tty.h" /* tty_gotoyx, tty_print_char */
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#include "win.h"
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#include "src/consaver/cons.saver.h" /* console_flag */
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/*** global variables **************************************************/
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/* This flag is set by xterm detection routine in function main() */
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/* It is used by function view_other_cmd() */
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int xterm_flag = 0;
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extern int keybar_visible;
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/*** file scope macro definitions **************************************/
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/*** file scope type declarations **************************************/
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/*** file scope variables **********************************************/
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static gboolean rxvt_extensions = FALSE;
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/*** file scope functions **********************************************/
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/* my own wierd protocol base 16 - paul */
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static int
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rxvt_getc (void)
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{
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int r;
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unsigned char c;
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while (read (0, &c, 1) != 1);
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if (c == '\n')
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return -1;
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r = (c - 'A') * 16;
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while (read (0, &c, 1) != 1);
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r += (c - 'A');
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return r;
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}
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static int
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anything_ready (void)
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{
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fd_set fds;
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struct timeval tv;
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FD_ZERO (&fds);
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FD_SET (0, &fds);
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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return select (1, &fds, 0, 0, &tv);
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}
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/*** public functions **************************************************/
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void
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do_enter_ca_mode (void)
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{
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if (xterm_flag) {
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fprintf (stdout, /* ESC_STR ")0" */ ESC_STR "7" ESC_STR "[?47h");
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fflush (stdout);
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}
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}
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void
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do_exit_ca_mode (void)
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{
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if (xterm_flag) {
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fprintf (stdout, ESC_STR "[?47l" ESC_STR "8" ESC_STR "[m");
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fflush (stdout);
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}
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}
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void
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show_rxvt_contents (int starty, unsigned char y1, unsigned char y2)
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{
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unsigned char *k;
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int bytes, i, j, cols = 0;
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y1 += (keybar_visible != 0); /* i don't knwo why we need this - paul */
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y2 += (keybar_visible != 0);
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while (anything_ready ())
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tty_lowlevel_getch ();
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/* my own wierd protocol base 26 - paul */
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printf ("\033CL%c%c%c%c\n", (y1 / 26) + 'A', (y1 % 26) + 'A', (y2 / 26) + 'A', (y2 % 26) + 'A');
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bytes = (y2 - y1) * (COLS + 1) + 1; /* *should* be the number of bytes read */
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j = 0;
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k = g_malloc (bytes);
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for (;;) {
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int c;
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c = rxvt_getc ();
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if (c < 0)
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break;
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if (j < bytes)
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k[j++] = c;
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for (cols = 1;; cols++) {
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c = rxvt_getc ();
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if (c < 0)
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break;
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if (j < bytes)
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k[j++] = c;
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}
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}
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for (i = 0; i < j; i++) {
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if ((i % cols) == 0)
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tty_gotoyx (starty + (i / cols), 0);
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tty_print_char (is_printable (k[i]) ? k[i] : ' ');
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}
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g_free (k);
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}
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gboolean
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look_for_rxvt_extensions (void)
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{
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static gboolean been_called = FALSE;
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if (!been_called) {
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const char *e = getenv ("RXVT_EXT");
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rxvt_extensions = ((e != NULL) && (strcmp (e, "1.0") == 0));
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been_called = TRUE;
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}
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if (rxvt_extensions)
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console_flag = 4;
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return rxvt_extensions;
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}
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