format_macros.h revision c7f5f8508d98d5952d42ed7648c2a8f30a4da156 
1// Copyright (c) 2009 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef BASE_FORMAT_MACROS_H_
6#define BASE_FORMAT_MACROS_H_
7
8// This file defines the format macros for some integer types.
9
10// To print a 64-bit value in a portable way:
11//   int64_t value;
12//   printf("xyz:%" PRId64, value);
13// The "d" in the macro corresponds to %d; you can also use PRIu64 etc.
14//
15// For wide strings, prepend "Wide" to the macro:
16//   int64_t value;
17//   StringPrintf(L"xyz: %" WidePRId64, value);
18//
19// To print a size_t value in a portable way:
20//   size_t size;
21//   printf("xyz: %" PRIuS, size);
22// The "u" in the macro corresponds to %u, and S is for "size".
23
24#include "build/build_config.h"
25
26#if defined(OS_POSIX)
27
28#if (defined(_INTTYPES_H) || defined(_INTTYPES_H_)) && !defined(PRId64)
29#error "inttypes.h has already been included before this header file, but "
30#error "without __STDC_FORMAT_MACROS defined."
31#endif
32
33#if !defined(__STDC_FORMAT_MACROS)
34#define __STDC_FORMAT_MACROS
35#endif
36
37#include <inttypes.h>
38
39// GCC will concatenate wide and narrow strings correctly, so nothing needs to
40// be done here.
41#define WidePRId64 PRId64
42#define WidePRIu64 PRIu64
43#define WidePRIx64 PRIx64
44
45#define PRIuS "zu"
46
47#else  // OS_WIN
48
49#if !defined(PRId64)
50#define PRId64 "I64d"
51#endif
52
53#if !defined(PRIu64)
54#define PRIu64 "I64u"
55#endif
56
57#if !defined(PRIx64)
58#define PRIx64 "I64x"
59#endif
60
61#define WidePRId64 L"I64d"
62#define WidePRIu64 L"I64u"
63#define WidePRIx64 L"I64x"
64
65#define PRIuS "Iu"
66
67#endif
68
69#endif  // !BASE_FORMAT_MACROS_H_
70