1 files changed, 168 insertions, 0 deletions
diff --git a/lib/tty/win.c b/lib/tty/win.c
new file mode 100644
index 0000000..45451a4
--- /dev/null
+++ b/lib/tty/win.c
@@ -0,0 +1,168 @@
+/*
+   Terminal management xterm and rxvt support
+
+   Copyright (C) 1995-2023
+   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 ****************************************************************/
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** 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 know 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;
+}
+
+/* --------------------------------------------------------------------------------------------- */