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authorGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-01-17 19:45:36 +0000
committerGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-01-17 19:45:36 +0000
commitd4a745c3d4936690660a4813b0c5e2ca9990838f (patch)
treea317925b1edc137b8ec84b1b483b6686db3ab278 /coreutils
parenta6e31ad83431eff9a76bf40dada68f2d925c9f70 (diff)
downloadbusybox-d4a745c3d4936690660a4813b0c5e2ca9990838f.tar.gz
busybox-d4a745c3d4936690660a4813b0c5e2ca9990838f.tar.bz2
- peruse get_terminal_width_height and remove legacy code for ancient
slowaris versions.
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/stty.c79
1 files changed, 10 insertions, 69 deletions
diff --git a/coreutils/stty.c b/coreutils/stty.c
index a78e15c07..05d91d8c1 100644
--- a/coreutils/stty.c
+++ b/coreutils/stty.c
@@ -484,21 +484,13 @@ static void wrapf(const char *message, ...)
current_col = 0;
}
-#ifdef TIOCGWINSZ
-
-static int get_win_size(int fd, struct winsize *win)
-{
- return ioctl(fd, TIOCGWINSZ, (char *) win);
-}
-
-static void set_window_size(int rows, int cols)
+static void set_window_size(const int rows, const int cols)
{
- struct winsize win;
+ struct winsize win = { 0, 0, 0, 0};
- if (get_win_size(STDIN_FILENO, &win)) {
+ if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win)) {
if (errno != EINVAL) {
- perror_on_device("%s");
- return;
+ goto bail;
}
memset(&win, 0, sizeof(win));
}
@@ -508,77 +500,26 @@ static void set_window_size(int rows, int cols)
if (cols >= 0)
win.ws_col = cols;
-# ifdef TIOCSSIZE
- /* Alexander Dupuy <dupuy@cs.columbia.edu> wrote:
- The following code deals with a bug in the SunOS 4.x (and 3.x?) kernel.
- This comment from sys/ttold.h describes Sun's twisted logic - a better
- test would have been (ts_lines > 64k || ts_cols > 64k || ts_cols == 0).
- At any rate, the problem is gone in Solaris 2.x */
-
- if (win.ws_row == 0 || win.ws_col == 0) {
- struct ttysize ttysz;
-
- ttysz.ts_lines = win.ws_row;
- ttysz.ts_cols = win.ws_col;
-
- win.ws_row = win.ws_col = 1;
-
- if ((ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win) != 0)
- || (ioctl(STDIN_FILENO, TIOCSSIZE, (char *) &ttysz) != 0)) {
- perror_on_device("%s");
- }
- return;
- }
-# endif
-
if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
+bail:
perror_on_device("%s");
}
-static void display_window_size(int fancy)
+static void display_window_size(const int fancy)
{
const char *fmt_str = "%s\0%s: no size information for this device";
- struct winsize win;
+ unsigned width, height;
- if (get_win_size(STDIN_FILENO, &win)) {
+ if (get_terminal_width_height(STDIN_FILENO, &width, &height)) {
if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
perror_on_device(fmt_str);
}
} else {
wrapf(fancy ? "rows %d; columns %d;" : "%d %d\n",
- win.ws_row, win.ws_col);
+ height, width);
}
}
-#else /* !TIOCGWINSZ */
-
-static inline void display_window_size(int fancy) {}
-
-#endif /* !TIOCGWINSZ */
-
-static int screen_columns_or_die(void)
-{
- const char *s;
-
-#ifdef TIOCGWINSZ
- struct winsize win;
-
- /* With Solaris 2.[123], this ioctl fails and errno is set to
- EINVAL for telnet (but not rlogin) sessions.
- On ISC 3.0, it fails for the console and the serial port
- (but it works for ptys).
- It can also fail on any system when stdout isn't a tty.
- In case of any failure, just use the default */
- if (get_win_size(STDOUT_FILENO, &win) == 0 && win.ws_col > 0)
- return win.ws_col;
-#endif
-
- s = getenv("COLUMNS");
- if (s)
- return xatoi_u(s);
- return 80;
-}
-
static const struct suffix_mult stty_suffixes[] = {
{"b", 512 },
{"k", 1024},
@@ -1183,7 +1124,7 @@ invalid_argument:
perror_on_device_and_die("%s");
if (option_mask32 & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
- max_col = screen_columns_or_die();
+ get_terminal_width_height(STDOUT_FILENO, &max_col, NULL);
output_func(&mode);
return EXIT_SUCCESS;
}