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libbb: factor out code which queries screen width

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function                                             old     new   delta
get_terminal_width                                     -      17     +17
stty_main                                           1196    1197      +1
pstree_main                                          321     319      -2
ls_main                                              735     731      -4
watch_main                                           232     225      -7
bb_progress_update                                   714     706      -8
ps_main                                              555     543     -12
run_applet_and_exit                                  708     695     -13
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 18/-46)            Total: -28 byte

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2015-10-23 01:44:22 +02:00
parent a960748748
commit 641caaec3d
9 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
coreutils/ls.c
View File

@ -1105,7 +1105,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
#if ENABLE_FEATURE_AUTOWIDTH
/* obtain the terminal width */
get_terminal_width_height(STDIN_FILENO, &G_terminal_width, NULL);
G_terminal_width = get_terminal_width(STDIN_FILENO);
/* go one less... */
G_terminal_width--;
#endif

2
coreutils/stty.c
View File

@ -1403,7 +1403,7 @@ int stty_main(int argc UNUSED_PARAM, char **argv)
perror_on_device_and_die("%s");
if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
get_terminal_width_height(STDOUT_FILENO, &G.max_col, NULL);
G.max_col = get_terminal_width(STDOUT_FILENO);
output_func(&mode, display_all);
return EXIT_SUCCESS;
}

1
include/libbb.h
View File

@ -1399,6 +1399,7 @@ extern void print_login_prompt(void) FAST_FUNC;
char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC;
/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC;
int get_terminal_width(int fd) FAST_FUNC;
int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC;

2
libbb/appletlib.c
View File

@ -623,7 +623,7 @@ static int busybox_main(char **argv)
output_width = 80;
if (ENABLE_FEATURE_AUTOWIDTH) {
/* Obtain the terminal width */
get_terminal_width_height(0, &output_width, NULL);
output_width = get_terminal_width(2);
}
dup2(1, 2);

9
libbb/progress.c
View File

@ -45,13 +45,6 @@ enum {
STALLTIME = 5
};
static unsigned int get_tty2_width(void)
{
unsigned width;
get_terminal_width_height(2, &width, NULL);
return width;
}
void FAST_FUNC bb_progress_init(bb_progress_t *p, const char *curfile)
{
#if ENABLE_UNICODE_SUPPORT
@ -148,7 +141,7 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
unsigned ratio = 100 * beg_and_transferred / totalsize;
fprintf(stderr, "%4u%%", ratio);
barlength = get_tty2_width() - 49;
barlength = get_terminal_width(2) - 49;
if (barlength > 0) {
/* god bless gcc for variable arrays :) */
char buf[barlength + 1];

6
libbb/xfuncs.c
View File

@ -270,6 +270,12 @@ int FAST_FUNC get_terminal_width_height(int fd, unsigned *width, unsigned *heigh
*width = wh_helper(win.ws_col, 80, "COLUMNS", &err);
return err;
}
int FAST_FUNC get_terminal_width(int fd)
{
unsigned width;
get_terminal_width_height(fd, &width, NULL);
return width;
}
int FAST_FUNC tcsetattr_stdin_TCSANOW(const struct termios *tp)
{

4
procps/ps.c
View File

@ -622,7 +622,7 @@ int ps_main(int argc UNUSED_PARAM, char **argv)
* and such large widths */
terminal_width = MAX_WIDTH;
if (isatty(1)) {
get_terminal_width_height(0, &terminal_width, NULL);
terminal_width = get_terminal_width(0);
if (--terminal_width > MAX_WIDTH)
terminal_width = MAX_WIDTH;
}
@ -672,7 +672,7 @@ int ps_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
if (w_count) {
terminal_width = (w_count == 1) ? 132 : MAX_WIDTH;
} else {
get_terminal_width_height(0, &terminal_width, NULL);
terminal_width = get_terminal_width(0);
/* Go one less... */
if (--terminal_width > MAX_WIDTH)
terminal_width = MAX_WIDTH;

2
procps/pstree.c
View File

@ -381,7 +381,7 @@ int pstree_main(int argc UNUSED_PARAM, char **argv)
INIT_G();
get_terminal_width_height(0, &G.output_width, NULL);
G.output_width = get_terminal_width(0);
opt_complementary = "?1";
getopt32(argv, "p");

2
procps/watch.c
View File

@ -72,7 +72,7 @@ int watch_main(int argc UNUSED_PARAM, char **argv)
// STDERR_FILENO is procps3 compat:
// "watch ls 2>/dev/null" does not detect tty size
get_terminal_width_height(STDERR_FILENO, &new_width, NULL);
new_width = get_terminal_width(STDERR_FILENO);
if (new_width != width) {
width = new_width;
free(header);