blob: 87f9d3c47c601062869c2fee687617b81218e182 (
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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*
* str.c - String helper functions that don't need string.h or ctype.h
*
* Copyright 2006 Red Hat, Inc.
*
* David Cantrell <dcantrell@redhat.com>
*
* This software may be freely redistributed under the terms of the GNU
* general public license.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include "str.h"
/**
* Convert given string to uppercase. Modifies the argument in the caller's
* stack. If you must ask simply "why?" for this function, it's so we don't
* need toupper() and the same for loop all over the place.
*
* LIMITATIONS: Only deals with ASCII character set.
*
* @param str String to convert to uppercase.
* @return Pointer to str.
*/
char *str2upper(char *str) {
char *tmp;
if (str == NULL)
return NULL;
/* man ascii(7) */
tmp = str;
while (*tmp != '\0') {
if (*tmp >= 'a' && *tmp <= 'z')
*tmp -= 32;
tmp++;
}
return str;
}
/* vim:set shiftwidth=4 softtabstop=4: */
|
