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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#include "internal_macros.h"13 14namespace benchmark {15 16BENCHMARK_EXPORT17std::string HumanReadableNumber(double n, Counter::OneK one_k);18 19BENCHMARK_EXPORT20#if defined(__MINGW32__)21__attribute__((format(__MINGW_PRINTF_FORMAT, 1, 2)))22#elif defined(__GNUC__)23__attribute__((format(printf, 1, 2)))24#endif25std::string26StrFormat(const char* format, ...);27 28inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {29 return out;30}31 32template <class First, class... Rest>33inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {34 out << std::forward<First>(f);35 return StrCatImp(out, std::forward<Rest>(rest)...);36}37 38template <class... Args>39inline std::string StrCat(Args&&... args) {40 std::ostringstream ss;41 StrCatImp(ss, std::forward<Args>(args)...);42 return ss.str();43}44 45BENCHMARK_EXPORT46std::vector<std::string> StrSplit(const std::string& str, char delim);47 48// Disable lint checking for this block since it re-implements C functions.49// NOLINTBEGIN50#ifdef BENCHMARK_STL_ANDROID_GNUSTL51/*52 * GNU STL in Android NDK lacks support for some C++11 functions, including53 * stoul, stoi, stod. We reimplement them here using C functions strtoul,54 * strtol, strtod. Note that reimplemented functions are in benchmark::55 * namespace, not std:: namespace.56 */57unsigned long stoul(const std::string& str, size_t* pos = nullptr,58 int base = 10);59int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);60double stod(const std::string& str, size_t* pos = nullptr);61#else62using std::stod; // NOLINT(misc-unused-using-decls)63using std::stoi; // NOLINT(misc-unused-using-decls)64using std::stoul; // NOLINT(misc-unused-using-decls)65#endif66// NOLINTEND67 68} // end namespace benchmark69 70#endif // BENCHMARK_STRING_UTIL_H_71