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148/*
* terminal.c:
*
* Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
* All rights reserved.
*
*/
static char rcsid[] = "$Id$";
/*
* $Log$
* Revision 1.9 2008/02/15 03:32:07 james
* *** empty log message ***
*
* Revision 1.8 2008/02/14 10:39:14 james
* *** empty log message ***
*
* Revision 1.7 2008/02/14 01:55:57 james
* *** empty log message ***
*
* Revision 1.6 2008/02/14 00:57:58 james
* *** empty log message ***
*
* Revision 1.5 2008/02/13 18:05:06 james
* *** empty log message ***
*
* Revision 1.4 2008/02/13 16:57:29 james
* *** empty log message ***
*
* Revision 1.3 2008/02/13 09:12:21 james
* *** empty log message ***
*
* Revision 1.2 2008/02/13 01:08:18 james
* *** empty log message ***
*
* Revision 1.1 2008/02/12 22:36:46 james
* *** empty log message ***
*
* Revision 1.1 2008/02/09 15:47:28 james
* *** empty log message ***
*
* Revision 1.2 2008/02/07 11:11:14 staffcvs
* *** empty log message ***
*
* Revision 1.1 2008/02/07 01:02:52 james
* *** empty log message ***
*
* Revision 1.3 2008/02/06 17:53:28 james
* *** empty log message ***
*
* Revision 1.2 2008/02/04 02:05:06 james
* *** empty log message ***
*
* Revision 1.1 2008/02/04 01:32:39 james
* *** empty log message ***
*
*/
#include "project.h"
typedef struct TERMINAL_struct
{
TTY_SIGNATURE;
struct termios orig_termios;
struct TERMINAL_struct *next;
} TERMINAL;
static TERMINAL *terminal_list = NULL;
int terminal_winches;
static void
terminal_close (TTY * _t)
{
char buf[32];
int i;
TERMINAL *t = (TERMINAL *) _t;
TERMINAL **ptr = &terminal_list;
if (!t)
return;
/* Take out of cleanup list */
while (*ptr && (*ptr != t))
ptr = &((*ptr)->next);
if (*ptr)
*ptr = t->next;
tcsetattr (t->wfd, TCSANOW, &t->orig_termios);
set_nonblocking (t->wfd);
t->xmit (_t, "\033[r", 3);
t->xmit (_t, "\033[0m", 4);
i = sprintf (buf, "\033[%d;%dH", CRT_ROWS + 1, 1);
t->xmit (_t, buf, i);
t->xmit (_t, "\033[J", 3);
set_blocking (t->rfd);
set_blocking (t->wfd);
free (t);
}
void
terminal_atexit (void)
{
while (terminal_list)
terminal_close ((TTY *) terminal_list);
}
static void
sigint (int dummy)
{
terminal_atexit ();
exit (-1);
}
static void
sigwinch (int not)
{
terminal_winches++;
}
void
terminal_getsize (TTY * _t)
{
TERMINAL *t = (TERMINAL *) _t;
struct winsize sz = { 0 };
if (!t)
return;
if (ioctl (t->wfd, TIOCGWINSZ, &sz))
{
t->size.x = CRT_COLS;
t->size.y = CRT_ROWS;
}
else
{
t->size.x = sz.ws_col;
t->size.y = sz.ws_row;
}
}
void
terminal_dispatch (void)
{
TERMINAL *t;
if (!terminal_winches)
return;
terminal_winches = 0;
for (t = terminal_list; t; t = t->next)
terminal_getsize ((TTY *) t);
}
static int
terminal_read (TTY * _t, void *buf, int len)
{
TERMINAL *t = (TERMINAL *) _t;
int red, done = 0;
terminal_dispatch ();
set_nonblocking (t->rfd);
do
{
red = wrap_read (t->rfd, buf, len);
if (red < 0)
return -1;
if (!red)
return done;
buf += red;
len -= red;
done += red;
}
while (len);
return done;
}
static int
terminal_write (TTY * _t, void *buf, int len)
{
int writ, done = 0;
TERMINAL *t = (TERMINAL *) _t;
terminal_dispatch ();
set_blocking (t->wfd);
do
{
writ = wrap_write (t->wfd, buf, len);
if (writ < 0)
return -1;
if (!writ)
usleep (1000);
buf += writ;
len -= writ;
done += writ;
}
while (len);
return done;
}
void
terminal_register_handlers (void)
{
struct sigaction sa = { 0 };
sa.sa_handler = sigwinch;
sa.sa_flags = SA_RESTART;
sigaction (SIGWINCH, &sa, NULL);
sa.sa_handler = sigint;
sa.sa_flags = SA_RESTART;
sigaction (SIGINT, &sa, NULL);
}
TTY *
terminal_open (int rfd, int wfd)
{
TERMINAL *t;
pid_t child;
struct termios termios;
t = (TERMINAL *) malloc (sizeof (TERMINAL));
strcpy (t->name, "terminal");
t->rfd = rfd;
t->wfd = wfd;
tcgetattr (wfd, &t->orig_termios);
t->next = terminal_list;
terminal_list = t;
tcgetattr (wfd, &termios);
set_nonblocking (rfd);
set_nonblocking (wfd);
cfmakeraw (&termios);
//raw_termios (&termios);
tcsetattr (wfd, TCSANOW, &termios);
t->recv = terminal_read;
t->xmit = terminal_write;
t->close = terminal_close;
t->blocked = 0;
terminal_getsize ((TTY *) t);
return (TTY *) t;
}
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