aboutsummaryrefslogtreecommitdiff
path: root/libbb/trim.c
blob: 4957d7276c62244badf144b6198ff60286bf4a06 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/* vi: set sw=4 ts=4: */
/*
 * Utility routines.
 *
 * Copyright (C) many different people.
 * If you wrote this, please acknowledge your work.
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

void trim(char *s)
{
	size_t len = strlen(s);
	size_t lws;

	/* trim trailing whitespace */
	while (len && isspace(s[len-1])) --len;

	/* trim leading whitespace */
	if (len) {
		lws = strspn(s, " \n\r\t\v");
		memmove(s, s + lws, len -= lws);
	}
	s[len] = '\0';
}