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dmesg: more correct skipping of <N>; use faster putchar for most output

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function                                             old     new   delta
dmesg_main                                           246     291     +45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-10-19 23:08:33 +02:00
parent 0016bcee37
commit f04ca74ab5
1 changed files with 12 additions and 7 deletions
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19
util-linux/dmesg.c
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@ -45,20 +45,25 @@ int dmesg_main(int argc UNUSED_PARAM, char **argv)
if (len == 0)
return EXIT_SUCCESS;
/* Skip <#> at the start of lines, and make sure we end with a newline */
if (ENABLE_FEATURE_DMESG_PRETTY) {
int last = '\n';
int in = 0;
do {
if (last == '\n' && buf[in] == '<')
/* Skip <#> at the start of lines */
while (1) {
if (last == '\n' && buf[in] == '<') {
in += 3;
else {
last = buf[in++];
bb_putchar(last);
if (in >= len)
break;
}
} while (in < len);
last = buf[in];
putchar(last);
in++;
if (in >= len)
break;
}
/* Make sure we end with a newline */
if (last != '\n')
bb_putchar('\n');
} else {