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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-01-18 00:53:35 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-01-18 00:53:35 +0000
commit41aaefce71bfdfb7d788c29e9df90971eecc8193 (patch)
tree7ac93671972cfb0029cc50e00de6413433b1767c /coreutils
parentcbbc043d1bce3bf48097520dbb91d84a423386a6 (diff)
downloadbusybox-41aaefce71bfdfb7d788c29e9df90971eecc8193.tar.gz
busybox-41aaefce71bfdfb7d788c29e9df90971eecc8193.tar.bz2
stop using global variable needlessly
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/stty.c58
1 files changed, 30 insertions, 28 deletions
diff --git a/coreutils/stty.c b/coreutils/stty.c
index 7206f2d11..3ce8bf312 100644
--- a/coreutils/stty.c
+++ b/coreutils/stty.c
@@ -901,19 +901,21 @@ static void set_control_char_or_die(const struct control_info *info,
mode->c_cc[info->offset] = value;
}
-#define STTY_require_set_attr (1<<0)
-#define STTY_speed_was_set (1<<1)
-#define STTY_verbose_output (1<<2)
-#define STTY_recoverable_output (1<<3)
-#define STTY_noargs (1<<4)
+#define STTY_require_set_attr (1<<0)
+#define STTY_speed_was_set (1<<1)
+#define STTY_verbose_output (1<<2)
+#define STTY_recoverable_output (1<<3)
+#define STTY_noargs (1<<4)
int stty_main(int argc, char **argv)
{
struct termios mode;
void (*output_func)(const struct termios *, const int);
const char *file_name = NULL;
- int k;
int display_all = 0;
- option_mask32 = STTY_noargs;
+ int stty_state;
+ int k;
+
+ stty_state = STTY_noargs;
output_func = do_display;
/* First pass: only parse/verify command line params */
@@ -931,7 +933,7 @@ int stty_main(int argc, char **argv)
if (mp) {
if (!(mp->flags & REV))
goto invalid_argument;
- option_mask32 &= ~STTY_noargs;
+ stty_state &= ~STTY_noargs;
continue;
}
/* It is an option - parse it */
@@ -939,12 +941,12 @@ int stty_main(int argc, char **argv)
while (arg[++i]) {
switch (arg[i]) {
case 'a':
- option_mask32 |= STTY_verbose_output;
+ stty_state |= STTY_verbose_output;
output_func = do_display;
display_all = 1;
break;
case 'g':
- option_mask32 |= STTY_recoverable_output;
+ stty_state |= STTY_recoverable_output;
output_func = display_recoverable;
break;
case 'F':
@@ -971,7 +973,7 @@ end_option:
mp = find_mode(arg);
if (mp) {
- option_mask32 &= ~STTY_noargs;
+ stty_state &= ~STTY_noargs;
continue;
}
@@ -981,7 +983,7 @@ end_option:
bb_error_msg_and_die(bb_msg_requires_arg, arg);
/* called for the side effect of xfunc death only */
set_control_char_or_die(cp, argnext, &mode);
- option_mask32 &= ~STTY_noargs;
+ stty_state &= ~STTY_noargs;
++k;
continue;
}
@@ -1024,16 +1026,16 @@ end_option:
invalid_argument:
bb_error_msg_and_die("invalid argument '%s'", arg);
}
- option_mask32 &= ~STTY_noargs;
+ stty_state &= ~STTY_noargs;
}
/* Specifying both -a and -g is an error */
- if ((option_mask32 & (STTY_verbose_output | STTY_recoverable_output)) ==
+ if ((stty_state & (STTY_verbose_output | STTY_recoverable_output)) ==
(STTY_verbose_output | STTY_recoverable_output))
bb_error_msg_and_die("verbose and stty-readable output styles are mutually exclusive");
/* Specifying -a or -g with non-options is an error */
- if (!(option_mask32 & STTY_noargs) &&
- (option_mask32 & (STTY_verbose_output | STTY_recoverable_output)))
+ if (!(stty_state & STTY_noargs) &&
+ (stty_state & (STTY_verbose_output | STTY_recoverable_output)))
bb_error_msg_and_die("modes may not be set when specifying an output style");
/* Now it is safe to start doing things */
@@ -1057,7 +1059,7 @@ invalid_argument:
if (tcgetattr(STDIN_FILENO, &mode))
perror_on_device_and_die("%s");
- if (option_mask32 & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
+ if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
get_terminal_width_height(STDOUT_FILENO, &max_col, NULL);
output_func(&mode, display_all);
return EXIT_SUCCESS;
@@ -1076,7 +1078,7 @@ invalid_argument:
mp = find_mode(arg+1);
if (mp) {
set_mode(mp, 1 /* reversed */, &mode);
- option_mask32 |= STTY_require_set_attr;
+ stty_state |= STTY_require_set_attr;
}
/* It is an option - already parsed. Skip it */
continue;
@@ -1085,7 +1087,7 @@ invalid_argument:
mp = find_mode(arg);
if (mp) {
set_mode(mp, 0 /* non-reversed */, &mode);
- option_mask32 |= STTY_require_set_attr;
+ stty_state |= STTY_require_set_attr;
continue;
}
@@ -1093,7 +1095,7 @@ invalid_argument:
if (cp) {
++k;
set_control_char_or_die(cp, argnext, &mode);
- option_mask32 |= STTY_require_set_attr;
+ stty_state |= STTY_require_set_attr;
continue;
}
@@ -1106,7 +1108,7 @@ invalid_argument:
#ifdef HAVE_C_LINE
case param_line:
mode.c_line = xatoul_sfx(argnext, stty_suffixes);
- option_mask32 |= STTY_require_set_attr;
+ stty_state |= STTY_require_set_attr;
break;
#endif
#ifdef TIOCGWINSZ
@@ -1125,24 +1127,24 @@ invalid_argument:
break;
case param_ispeed:
set_speed_or_die(input_speed, argnext, &mode);
- option_mask32 |= (STTY_require_set_attr | STTY_speed_was_set);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
break;
case param_ospeed:
set_speed_or_die(output_speed, argnext, &mode);
- option_mask32 |= (STTY_require_set_attr | STTY_speed_was_set);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
break;
default:
if (recover_mode(arg, &mode) == 1)
- option_mask32 |= STTY_require_set_attr;
+ stty_state |= STTY_require_set_attr;
else /* true: if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) */{
set_speed_or_die(both_speeds, arg, &mode);
- option_mask32 |= (STTY_require_set_attr | STTY_speed_was_set);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
} /* else - impossible (caught in the first pass):
bb_error_msg_and_die("invalid argument '%s'", arg); */
}
}
- if (option_mask32 & STTY_require_set_attr) {
+ if (stty_state & STTY_require_set_attr) {
struct termios new_mode;
if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
@@ -1173,8 +1175,8 @@ invalid_argument:
error for a true failure to set the baud rate */
new_mode.c_cflag &= (~CIBAUD);
- if (option_mask32 & STTY_speed_was_set ||
- memcmp(&mode, &new_mode, sizeof(mode)) != 0)
+ if ((stty_state & STTY_speed_was_set)
+ || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
#endif
perror_on_device_and_die("%s: cannot perform all requested operations");
}