[BusyBox-cvs] busybox/util-linux more.c,1.61,1.62
Erik Andersen
andersen at busybox.net
Sat Mar 27 09:49:59 UTC 2004
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Update of /var/cvs/busybox/util-linux
In directory nail:/tmp/cvs-serv8544/util-linux
Modified Files:
more.c
Log Message:
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
Index: more.c
===================================================================
RCS file: /var/cvs/busybox/util-linux/more.c,v
retrieving revision 1.61
retrieving revision 1.62
diff -u -d -r1.61 -r1.62
--- a/more.c 23 Mar 2004 23:15:35 -0000 1.61
+++ b/more.c 27 Mar 2004 09:49:57 -0000 1.62
@@ -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 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 @@
#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 @@
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 @@
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 @@
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 @@
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 @@
/* 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 @@
}
}
if (++lines >= page_height) {
- if(please_display_more_prompt==0)
- please_display_more_prompt = 1;
+ please_display_more_prompt |= 1;
}
len=0;
}
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