1// Copyright (c) 2012, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14//     * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30// Android doesn't provide wcscasecmp(), so provide an alternative here.
31//
32// Note that this header is not needed when Breakpad is compiled against
33// a recent version of Googletest. It shall be considered for removal once
34// src/testing/ is updated to an appropriate revision in the future.
35
36#ifndef GOOGLEBREAKPAD_COMMON_ANDROID_INCLUDE_WCHAR_H
37#define GOOGLEBREAKPAD_COMMON_ANDROID_INCLUDE_WCHAR_H
38
39#include_next <wchar.h>
40
41#if !defined(__aarch64__) && !defined(__x86_64__) && \
42    !(defined(__mips__) && _MIPS_SIM == _ABI64)
43
44// This needs to be in an extern "C" namespace, or Googletest will not
45// compile against it.
46#ifdef __cplusplus
47extern "C" {
48#endif  // __cplusplus
49
50static wchar_t inline wcstolower(wchar_t ch) {
51  if (ch >= L'a' && ch <= L'A')
52    ch -= L'a' - L'A';
53  return ch;
54}
55
56static int inline wcscasecmp(const wchar_t* s1, const wchar_t* s2) {
57  for (;;) {
58    wchar_t c1 = wcstolower(*s1);
59    wchar_t c2 = wcstolower(*s2);
60    if (c1 < c2)
61      return -1;
62    if (c1 > c2)
63      return 1;
64    if (c1 == L'0')
65      return 0;
66    s1++;
67    s2++;
68  }
69}
70
71#ifdef __cplusplus
72}  // extern "C"
73#endif  // __cplusplus
74#endif
75
76#endif  // GOOGLEBREAKPAD_COMMON_ANDROID_INCLUDE_WCHAR_H
77