Promote reset (actually write a new one using the simple man 4 console_codes

terminal reset escape sequence) and add gettty() function to lib so terminal
gets reset even when we redirect stdout/stderr. (This is apparently the
expected behavior.)

2 files changed, 10 insertions, 0 deletions

diff --git a/lib/interestingtimes.c b/lib/interestingtimes.c
index cea5039f..85b8eb4c 100644
--- a/lib/interestingtimes.c
+++ b/lib/interestingtimes.c
@@ -5,6 +5,15 @@
 
 #include "toys.h"
 
+int xgettty(void)
+{
+  int i, j;
+
+  for (i = 0; i<3; i++) if (isatty(j = (i+1)%3)) return j;
+
+  return xopen("/dev/tty", O_RDWR);
+}
+
 // Quick and dirty query size of terminal, doesn't do ANSI probe fallback.
 // set x=80 y=25 before calling to provide defaults. Returns 0 if couldn't
 // determine size.
diff --git a/lib/lib.h b/lib/lib.h
index 03a05703..54876b6a 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -181,6 +181,7 @@ int qstrcmp(const void *a, const void *b);
 int xpoll(struct pollfd *fds, int nfds, int timeout);
 
 // interestingtimes.c
+int xgettty(void);
 int terminal_size(unsigned *xx, unsigned *yy);
 int set_terminal(int fd, int raw, struct termios *old);
 int scan_key(char *scratch, char **seqs, int block);