busybox/libbb/skip_whitespace.c
Andy Shevchenko cc222747ae libbb: Use return value from is_prefixed_with()
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5 (-5)
Function                                     old     new   delta
skip_dev_pfx                                  30      25      -5
Total: Before=779966, After=779961, chg -0.00%

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-27 13:35:40 +01:00

38 lines
961 B
C

/* vi: set sw=4 ts=4: */
/*
* skip_whitespace implementation for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include "libbb.h"
char* FAST_FUNC skip_whitespace(const char *s)
{
/* In POSIX/C locale (the only locale we care about: do we REALLY want
* to allow Unicode whitespace in, say, .conf files? nuts!)
* isspace is only these chars: "\t\n\v\f\r" and space.
* "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
* Use that.
*/
while (*s == ' ' || (unsigned char)(*s - 9) <= (13 - 9))
s++;
return (char *) s;
}
char* FAST_FUNC skip_non_whitespace(const char *s)
{
while (*s != '\0' && *s != ' ' && (unsigned char)(*s - 9) > (13 - 9))
s++;
return (char *) s;
}
char* FAST_FUNC skip_dev_pfx(const char *tty_name)
{
char *unprefixed = is_prefixed_with(tty_name, "/dev/");
return unprefixed ? unprefixed : (char*)tty_name;
}