benchmark 1.7.0
string_util.h
1#ifndef BENCHMARK_STRING_UTIL_H_
2#define BENCHMARK_STRING_UTIL_H_
3
4#include <sstream>
5#include <string>
6#include <utility>
7
8#include "benchmark/export.h"
9#include "internal_macros.h"
10
11namespace benchmark {
12
13void AppendHumanReadable(int n, std::string* str);
14
15std::string HumanReadableNumber(double n, double one_k = 1024.0);
16
17BENCHMARK_EXPORT
18#if defined(__MINGW32__)
19__attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))
20#elif defined(__GNUC__)
21__attribute__((format(printf, 1, 2)))
22#endif
23std::string
24StrFormat(const char* format, ...);
25
26inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
27 return out;
28}
29
30template <class First, class... Rest>
31inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
32 out << std::forward<First>(f);
33 return StrCatImp(out, std::forward<Rest>(rest)...);
34}
35
36template <class... Args>
37inline std::string StrCat(Args&&... args) {
38 std::ostringstream ss;
39 StrCatImp(ss, std::forward<Args>(args)...);
40 return ss.str();
41}
42
43BENCHMARK_EXPORT
44std::vector<std::string> StrSplit(const std::string& str, char delim);
45
46// Disable lint checking for this block since it re-implements C functions.
47// NOLINTBEGIN
48#ifdef BENCHMARK_STL_ANDROID_GNUSTL
49/*
50 * GNU STL in Android NDK lacks support for some C++11 functions, including
51 * stoul, stoi, stod. We reimplement them here using C functions strtoul,
52 * strtol, strtod. Note that reimplemented functions are in benchmark::
53 * namespace, not std:: namespace.
54 */
55unsigned long stoul(const std::string& str, size_t* pos = nullptr,
56 int base = 10);
57int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
58double stod(const std::string& str, size_t* pos = nullptr);
59#else
60using std::stod; // NOLINT(misc-unused-using-decls)
61using std::stoi; // NOLINT(misc-unused-using-decls)
62using std::stoul; // NOLINT(misc-unused-using-decls)
63#endif
64// NOLINTEND
65
66} // end namespace benchmark
67
68#endif // BENCHMARK_STRING_UTIL_H_