static int open_interactive (void)
{
if (Use_Readline
&& (-1 == open_readline ("slsh")))
return -1;
if (NULL == (Readline_Load_Object = SLallocate_load_type ("<stdin>")))
{
if (Use_Readline)
close_readline ();
return -1;
}
Readline_Load_Object->read = read_using_readline;
Readline_Load_Object->auto_declare_globals = 1;
#if !SYSTEM_SUPPORTS_SIGNALS
/* If the system does not support asynchronouse signals, then it may install
* a SLang_Interrupt hook that checks for ^C, etc. For that reason, the
* tty must be initialized the whole time.
*/
init_tty ();
#endif
enable_keyboard_interrupt ();
return 0;
}
static int open_readline (SLFUTURE_CONST char *name)
{
unsigned int flags = SL_RLINE_BLINK_MATCH|SL_RLINE_USE_MULTILINE;
close_readline ();
Default_Readline_Info = open_slsh_readline (name, flags);
if (Default_Readline_Info == NULL)
return -1;
return 0;
}
static int open_readline (char *name)
{
#if USE_GNU_READLINE
return 0;
#else
unsigned int flags = SL_RLINE_BLINK_MATCH|SL_RLINE_USE_MULTILINE;
close_readline ();
if (NULL == (Rline_Info = SLrline_open2 (name, SLtt_Screen_Cols, flags)))
return -1;
return 0;
#endif
}
static void close_interactive (void)
{
close_readline ();
if (Readline_Load_Object == NULL)
return;
SLdeallocate_load_type (Readline_Load_Object);
Readline_Load_Object = NULL;
#if !SYSTEM_SUPPORTS_SIGNALS
reset_tty ();
#endif
}
