1/* vi: set sw=4 ts=4: */
2/*
3 * skip_whitespace implementation for busybox
4 *
5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include "libbb.h"
11
12char* FAST_FUNC skip_whitespace(const char *s)
13{
14	/* In POSIX/C locale (the only locale we care about: do we REALLY want
15	 * to allow Unicode whitespace in, say, .conf files? nuts!)
16	 * isspace is only these chars: "\t\n\v\f\r" and space.
17	 * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
18	 * Use that.
19	 */
20	while (*s == ' ' || (unsigned char)(*s - 9) <= (13 - 9))
21		s++;
22
23	return (char *) s;
24}
25
26char* FAST_FUNC skip_non_whitespace(const char *s)
27{
28	while (*s != '\0' && *s != ' ' && (unsigned char)(*s - 9) > (13 - 9))
29		s++;
30
31	return (char *) s;
32}
33
34char* FAST_FUNC skip_dev_pfx(const char *tty_name)
35{
36	if (strncmp(tty_name, "/dev/", 5) == 0)
37		tty_name += 5;
38	return (char*)tty_name;
39}
40