don't crash with no buffers, and clear the screen on exit

[visor] / visor / src / term.c

diff --git a/visor/src/term.c b/visor/src/term.c
index ee93e03..4746836 100644 (file)
--- a/visor/src/term.c
+++ b/visor/src/term.c
@@ -56,11 +56,20 @@ int term_init(const char *ttypath)
 
 void term_cleanup(void)
 {
+       term_clear();
+       term_setcursor(0, 0);
+       term_flush();
        tcsetattr(ttyfd, TCSAFLUSH, &saved_term);
        close(ttyfd);
        ttyfd = -1;
 }
 
+void term_reset(void)
+{
+       term_puts("\033c");
+       term_flush();
+}
+
 void term_getsize(int *width, int *height)
 {
        *width = term_width;
@@ -91,6 +100,11 @@ void term_send(const char *s, int size)
        }
 }
 
+void term_putchar(char c)
+{
+       term_send(&c, 1);
+}
+
 void term_puts(const char *s)
 {
        term_send(s, strlen(s));
@@ -141,6 +155,16 @@ void term_clear(void)
        term_puts("\033[2J");
 }
 
+void term_cursor(int show)
+{
+       term_printf("\033[?25%c", show ? 'h' : 'l');
+}
+
+void term_setcursor(int row, int col)
+{
+       term_printf("\033[%d;%dH", row + 1, col + 1);
+}
+
 int term_getchar(void)
 {
        int res;