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/* These routines are used by several of the demos. */
#include "config.h"
#include <stdio.h>
#include <signal.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#include <slang.h>
static void demolib_exit (int sig)
{
SLang_reset_tty ();
SLsmg_reset_smg ();
if (sig)
{
fprintf (stderr, "Exiting on signal %d\n", sig);
exit (1);
}
exit (sig);
}
#ifdef SIGTSTP
static void sigtstp_handler (int sig)
{
demolib_exit (sig);
}
#endif
#ifdef SIGINT
static void sigint_handler (int sig)
{
demolib_exit (sig);
}
#endif
static void init_signals (void)
{
#ifdef SIGTSTP
SLsignal (SIGTSTP, sigtstp_handler);
#endif
#ifdef SIGINT
SLsignal (SIGINT, sigint_handler);
#endif
}
static void exit_error_hook (char *fmt, va_list ap)
{
SLang_reset_tty ();
SLsmg_reset_smg ();
vfprintf (stderr, fmt, ap);
fputc ('\n', stderr);
exit (1);
}
static int demolib_init_terminal (int tty, int smg)
{
SLang_Exit_Error_Hook = exit_error_hook;
/* It is wise to block the occurance of display related signals while we are
* initializing.
*/
SLsig_block_signals ();
SLtt_get_terminfo ();
/* SLkp_init assumes that SLtt_get_terminfo has been called. */
if (tty && (-1 == SLkp_init ()))
{
SLsig_unblock_signals ();
return -1;
}
init_signals ();
if (tty) SLang_init_tty (-1, 0, 1);
#ifdef REAL_UNIX_SYSTEM
if (tty) SLtty_set_suspend_state (1);
#endif
if (smg
&& (-1 == SLsmg_init_smg ()))
{
SLsig_unblock_signals ();
return -1;
}
SLsig_unblock_signals ();
return 0;
}
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