busybox/libbb/skip_whitespace.c
Denys Vlasenko 0ef64bdb40 *: make GNU licensing statement forms more regular
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 20:14:46 +02:00

40 lines
937 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)
{
if (strncmp(tty_name, "/dev/", 5) == 0)
tty_name += 5;
return (char*)tty_name;
}