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authorDenis Vlasenko2007-05-31 21:31:56 +0000
committerDenis Vlasenko2007-05-31 21:31:56 +0000
commitc2f011aa031b8598422953d5e9a93ca008ad0867 (patch)
tree0f4c197180854003f7e169adbb0d0c056cc6f8b0 /util-linux
parent22a9a3c6f874b4741f9e4193e2b9b54c9eb39bdc (diff)
downloadbusybox-c2f011aa031b8598422953d5e9a93ca008ad0867.zip
busybox-c2f011aa031b8598422953d5e9a93ca008ad0867.tar.gz
more: stop using bss
# make && make bloatcheck function old new delta gotsig 86 107 +21 more_main 777 781 +4 cin_fileno 4 - -4 set_tty_to_initial_mode 25 - -25 new_settings 120 60 -60 initial_settings 120 60 -60 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 2/2 up/down: 25/-149) Total: -124 bytes
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/more.c40
1 files changed, 27 insertions, 13 deletions
diff --git a/util-linux/more.c b/util-linux/more.c
index 30ef896..4083d8e 100644
--- a/util-linux/more.c
+++ b/util-linux/more.c
@@ -15,26 +15,39 @@
*/
#include "libbb.h"
+#if ENABLE_FEATURE_USE_TERMIOS
+#include <termios.h>
+#endif /* FEATURE_USE_TERMIOS */
#if ENABLE_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);
-static struct termios initial_settings, new_settings;
+struct globals {
+ int cin_fileno;
+ struct termios initial_settings;
+ struct termios new_settings;
+};
+#define G (*(struct globals*)bb_common_bufsiz1)
+//#define G (*ptr_to_globals)
+#define initial_settings (G.initial_settings)
+#define new_settings (G.new_settings )
+#define cin_fileno (G.cin_fileno )
+#define INIT_G() ((void)0)
+//#define INIT_G() PTR_TO_GLOBALS = xzalloc(sizeof(G))
-static void set_tty_to_initial_mode(void)
-{
- setTermSettings(cin_fileno, &initial_settings);
-}
+#define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
+#define getTermSettings(fd, argp) tcgetattr(fd, argp)
static void gotsig(int sig)
{
putchar('\n');
+ setTermSettings(cin_fileno, &initial_settings);
exit(EXIT_FAILURE);
}
+
+#else /* !FEATURE_USE_TERMIOS */
+#define INIT_G() ((void)0)
+#define setTermSettings(fd, argp) ((void)0)
#endif /* FEATURE_USE_TERMIOS */
@@ -50,6 +63,8 @@ int more_main(int argc, char **argv)
int terminal_width;
int terminal_height;
+ INIT_G();
+
argv++;
/* Another popular pager, most, detects when stdout
* is not a tty and turns into cat. This makes sense. */
@@ -68,7 +83,6 @@ int more_main(int argc, char **argv)
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
setTermSettings(cin_fileno, &new_settings);
- atexit(set_tty_to_initial_mode);
signal(SIGINT, gotsig);
signal(SIGQUIT, gotsig);
signal(SIGTERM, gotsig);
@@ -95,7 +109,6 @@ int more_main(int argc, char **argv)
lines = 0;
page_height = terminal_height;
while ((c = getc(file)) != EOF) {
-
if ((please_display_more_prompt & 3) == 3) {
len = printf("--More-- ");
if (/*file != stdin &&*/ st.st_size > 0) {
@@ -129,8 +142,8 @@ int more_main(int argc, char **argv)
/*
* There are two input streams to worry about here:
*
- * c : the character we are reading from the file being "mored"
- * input : a character received from the keyboard
+ * c : the character we are reading from the file being "mored"
+ * input: a character received from the keyboard
*
* If we hit a newline in the _file_ stream, we want to test and
* see if any characters have been hit in the _input_ stream. This
@@ -169,5 +182,6 @@ int more_main(int argc, char **argv)
fflush(stdout);
} while (*argv && *++argv);
end:
+ setTermSettings(cin_fileno, &initial_settings);
return 0;
}