1 /* Copyright (c) 2009, 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 * ---
31 * Author: Craig Silverstein
32 */
33
34 #ifndef _WIN32
35 # error You should only be including windows/port.cc in a windows environment!
36 #endif
37
38 #include <string.h> // for strlen(), memset(), memcmp()
39 #include <assert.h>
40 #include <stdarg.h> // for va_list, va_start, va_end
41 #include <windows.h>
42
43 #include "windows_port.h"
44
45 // These call the windows _vsnprintf, but always NUL-terminate.
46 #if !defined(__MINGW32__) && !defined(__MINGW64__) /* mingw already defines */
47 #if !(defined(_MSC_VER) && _MSC_VER >= 1900) /* msvc 2015 already defines */
48
49 #ifdef _MSC_VER
50 # pragma warning(push)
51 # pragma warning(disable: 4996) // ignore _vsnprintf security warning
52 #endif
safe_vsnprintf(char * str,size_t size,const char * format,va_list ap)53 int safe_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
54 if (size == 0) // not even room for a \0?
55 return -1; // not what C99 says to do, but what windows does
56 str[size-1] = '\0';
57 return _vsnprintf(str, size-1, format, ap);
58 }
59 #ifdef _MSC_VER
60 # pragma warning(pop)
61 #endif
62
snprintf(char * str,size_t size,const char * format,...)63 int snprintf(char *str, size_t size, const char *format, ...) {
64 int r;
65 va_list ap;
66 va_start(ap, format);
67 r = vsnprintf(str, size, format, ap);
68 va_end(ap);
69 return r;
70 }
71
72 #endif /* if !(defined(_MSC_VER) && _MSC_VER >= 1900) */
73 #endif /* #if !defined(__MINGW32__) && !defined(__MINGW64__) */
74