benchmark 1.9.2
 
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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#include <vector>
8
9#include "benchmark/benchmark.h"
10#include "benchmark/export.h"
11#include "check.h"
12
13namespace benchmark {
14
15BENCHMARK_EXPORT
16std::string HumanReadableNumber(double n, Counter::OneK one_k);
17
18BENCHMARK_EXPORT
19#if defined(__MINGW32__)
20__attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))
21#elif defined(__GNUC__)
22__attribute__((format(printf, 1, 2)))
23#endif
24std::string
25StrFormat(const char* format, ...);
26
27inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
28 return out;
29}
30
31template <class First, class... Rest>
32inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
33 out << std::forward<First>(f);
34 return StrCatImp(out, std::forward<Rest>(rest)...);
35}
36
37template <class... Args>
38inline std::string StrCat(Args&&... args) {
39 std::ostringstream ss;
40 StrCatImp(ss, std::forward<Args>(args)...);
41 return ss.str();
42}
43
44BENCHMARK_EXPORT
45std::vector<std::string> StrSplit(const std::string& str, char delim);
46
47// Disable lint checking for this block since it re-implements C functions.
48// NOLINTBEGIN
49#ifdef BENCHMARK_STL_ANDROID_GNUSTL
50/*
51 * GNU STL in Android NDK lacks support for some C++11 functions, including
52 * stoul, stoi, stod. We reimplement them here using C functions strtoul,
53 * strtol, strtod. Note that reimplemented functions are in benchmark::
54 * namespace, not std:: namespace.
55 */
56unsigned long stoul(const std::string& str, size_t* pos = nullptr,
57 int base = 10);
58int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
59double stod(const std::string& str, size_t* pos = nullptr);
60#else
61using std::stod; // NOLINT(misc-unused-using-decls)
62using std::stoi; // NOLINT(misc-unused-using-decls)
63using std::stoul; // NOLINT(misc-unused-using-decls)
64#endif
65// NOLINTEND
66
67} // end namespace benchmark
68
69#endif // BENCHMARK_STRING_UTIL_H_