busybox/libbb/skip_whitespace.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 tarball for details.
 */

#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;
}
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
12	char* 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
26	char* 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	}