1/* Charset name normalization.
2 Copyright (C) 2001-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#include <ctype.h>
21#include <locale.h>
22
23
24static void
25strip (char *wp, const char *s)
26{
27 int slash_count = 0;
28
29 while (*s != '\0')
30 {
31 if (__isalnum_l (*s, _nl_C_locobj_ptr)
32 || *s == '_' || *s == '-' || *s == '.' || *s == ',' || *s == ':')
33 *wp++ = __toupper_l (*s, _nl_C_locobj_ptr);
34 else if (*s == '/')
35 {
36 if (++slash_count == 3)
37 break;
38 *wp++ = '/';
39 }
40 ++s;
41 }
42
43 while (slash_count++ < 2)
44 *wp++ = '/';
45
46 *wp = '\0';
47}
48
49
50static inline char * __attribute__ ((unused, always_inline))
51upstr (char *dst, const char *str)
52{
53 char *cp = dst;
54 while ((*cp++ = __toupper_l (*str++, _nl_C_locobj_ptr)) != '\0')
55 /* nothing */;
56 return dst;
57}
58