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Bernhard Fischer suggested that get_terminal_width_height() should return

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the result of the ioctl so callers can tell if we have a tty.  (0 means
we have a tty, nonzero means the ioctl couldn't find size info and we
fake 80x24.  Really we should fake 80x25, but oh well...)
This commit is contained in:
Rob Landley 2005-09-01 02:57:45 +00:00
parent 37adefc670
commit e0537f6194
2 changed files with 8 additions and 23 deletions
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2
include/libbb.h
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@ -474,7 +474,7 @@ extern void print_login_prompt(void);
extern void vfork_daemon_rexec(int nochdir, int noclose,
int argc, char **argv, char *foreground_opt);
extern void get_terminal_width_height(int fd, int *width, int *height);
extern int get_terminal_width_height(int fd, int *width, int *height);
extern unsigned long get_ug_id(const char *s, long (*my_getxxnam)(const char *));
extern void xregcomp(regex_t *preg, const char *regex, int cflags);

29
libbb/get_terminal_width_height.c
View File

@ -29,30 +29,15 @@
#include "busybox.h"
/* It is perfectly ok to pass in a NULL for either width or for
* height, in which case that value will not be set. It is also
* perfectly ok to have CONFIG_FEATURE_AUTOWIDTH disabled, in
* which case you will always get 80x24 */
void get_terminal_width_height(int fd, int *width, int *height)
* height, in which case that value will not be set. */
int get_terminal_width_height(int fd, int *width, int *height)
{
struct winsize win = { 0, 0, 0, 0 };
#ifdef CONFIG_FEATURE_AUTOWIDTH
if (ioctl(fd, TIOCGWINSZ, &win) != 0) {
win.ws_row = 24;
win.ws_col = 80;
}
#endif
if (win.ws_row <= 1) {
win.ws_row = 24;
}
if (win.ws_col <= 1) {
win.ws_col = 80;
}
if (height) {
*height = (int) win.ws_row;
}
if (width) {
*width = (int) win.ws_col;
}
int ret = ioctl(fd, TIOCGWINSZ, &win);
if (win.ws_row <= 1) win.ws_row = 24;
if (win.ws_col <= 1) win.ws_col = 80;
if (height) *height = (int) win.ws_row;
if (width) *width = (int) win.ws_col;
}
/* END CODE */