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authorEric Andersen2004-03-27 09:49:57 +0000
committerEric Andersen2004-03-27 09:49:57 +0000
commitedd580a088fe67f33036d3732f66f917b1c0a80b (patch)
treea8ec12bc720e22117cfd81d24d05639c3ba7bba6 /util-linux/more.c
parentfbcf06d2960f8f0959aac71d0fad8d9ab446b439 (diff)
downloadbusybox-edd580a088fe67f33036d3732f66f917b1c0a80b.zip
busybox-edd580a088fe67f33036d3732f66f917b1c0a80b.tar.gz
Vladimir N. Oleynik (vodz) writes:
Ok. Last patch reduce 73 bytes for compensate (and over) your changes ;-) Comments: Added cin_fileno variable, auto setted to 0 from BSS and have "eq" stdin descriptor if isatty(stout)==0, removed global variable FILE* cin. Removed default setting to terminal_width/terminal_height, this used only from main() and setted after call get_terminal_width_height() always correct. Variable please_display_more_prompt changed to bits logic, have size reducing. --w vodz
Diffstat (limited to 'util-linux/more.c')
-rw-r--r--util-linux/more.c43
1 files changed, 21 insertions, 22 deletions
diff --git a/util-linux/more.c b/util-linux/more.c
index 04b29de..5ece188 100644
--- a/util-linux/more.c
+++ b/util-linux/more.c
@@ -35,9 +35,9 @@
#include <sys/ioctl.h>
#include "busybox.h"
-static FILE *cin;
#ifdef CONFIG_FEATURE_USE_TERMIOS
+static int cin_fileno;
#include <termios.h>
#define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
#define getTermSettings(fd,argp) tcgetattr(fd, argp);
@@ -46,7 +46,7 @@ static struct termios initial_settings, new_settings;
static void set_tty_to_initial_mode(void)
{
- setTermSettings(fileno(cin), &initial_settings);
+ setTermSettings(cin_fileno, &initial_settings);
}
static void gotsig(int sig)
@@ -57,18 +57,19 @@ static void gotsig(int sig)
#endif /* CONFIG_FEATURE_USE_TERMIOS */
-static int terminal_width = 79; /* not 80 in case terminal has linefold bug */
-static int terminal_height = 24;
-
-
extern int more_main(int argc, char **argv)
{
int c, lines, input = 0;
- int please_display_more_prompt = -1;
+ int please_display_more_prompt = 0;
struct stat st;
FILE *file;
- FILE *in_file = stdin;
+ FILE *cin;
int len, page_height;
+ int terminal_width;
+ int terminal_height;
+#ifndef CONFIG_FEATURE_USE_TERMIOS
+ int cin_fileno;
+#endif
argc--;
argv++;
@@ -79,21 +80,23 @@ extern int more_main(int argc, char **argv)
cin = fopen(CURRENT_TTY, "r");
if (!cin)
cin = bb_xfopen(CONSOLE_DEV, "r");
- in_file = cin;
- please_display_more_prompt = 0;
+ cin_fileno = fileno(cin);
+ please_display_more_prompt = 2;
#ifdef CONFIG_FEATURE_USE_TERMIOS
- getTermSettings(fileno(cin), &initial_settings);
+ getTermSettings(cin_fileno, &initial_settings);
new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
- setTermSettings(fileno(cin), &new_settings);
+ setTermSettings(cin_fileno, &new_settings);
atexit(set_tty_to_initial_mode);
(void) signal(SIGINT, gotsig);
(void) signal(SIGQUIT, gotsig);
(void) signal(SIGTERM, gotsig);
#endif
+ } else {
+ cin = stdin;
}
do {
@@ -107,10 +110,9 @@ extern int more_main(int argc, char **argv)
st.st_size = 0;
fstat(fileno(file), &st);
- if(please_display_more_prompt>0)
- please_display_more_prompt = 0;
+ please_display_more_prompt &= ~1;
- get_terminal_width_height(fileno(in_file), &terminal_width, &terminal_height);
+ get_terminal_width_height(cin_fileno, &terminal_width, &terminal_height);
if (terminal_height > 4)
terminal_height -= 2;
if (terminal_width > 0)
@@ -121,7 +123,7 @@ extern int more_main(int argc, char **argv)
page_height = terminal_height;
while ((c = getc(file)) != EOF) {
- if (please_display_more_prompt>0) {
+ if ((please_display_more_prompt & 3) == 3) {
len = printf("--More-- ");
if (file != stdin && st.st_size > 0) {
#if _FILE_OFFSET_BITS == 64
@@ -150,11 +152,10 @@ extern int more_main(int argc, char **argv)
while (--len >= 0)
putc(' ', stdout);
putc('\r', stdout);
- fflush(stdout);
len=0;
lines = 0;
page_height = terminal_height;
- please_display_more_prompt = 0;
+ please_display_more_prompt &= ~1;
if (input == 'q')
goto end;
@@ -174,8 +175,7 @@ extern int more_main(int argc, char **argv)
/* increment by just one line if we are at
* the end of this line */
if (input == '\n')
- if(please_display_more_prompt==0)
- please_display_more_prompt = 1;
+ please_display_more_prompt |= 1;
/* Adjust the terminal height for any overlap, so that
* no lines get lost off the top. */
if (len >= terminal_width) {
@@ -190,8 +190,7 @@ extern int more_main(int argc, char **argv)
}
}
if (++lines >= page_height) {
- if(please_display_more_prompt==0)
- please_display_more_prompt = 1;
+ please_display_more_prompt |= 1;
}
len=0;
}