1 files changed, 96 insertions, 0 deletions
diff --git a/libslang/demo/demolib.c b/libslang/demo/demolib.c
new file mode 100644
index 0000000..7cb364a
--- /dev/null
+++ b/libslang/demo/demolib.c
@@ -0,0 +1,96 @@
+/* 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;
+}
+