string_util.h (1637B)
1 #ifndef BENCHMARK_STRING_UTIL_H_ 2 #define BENCHMARK_STRING_UTIL_H_ 3 4 #include <sstream> 5 #include <string> 6 #include <utility> 7 #include "internal_macros.h" 8 9 namespace benchmark { 10 11 void AppendHumanReadable(int n, std::string* str); 12 13 std::string HumanReadableNumber(double n, double one_k = 1024.0); 14 15 #ifdef __GNUC__ 16 __attribute__((format(printf, 1, 2))) 17 #endif 18 std::string 19 StrFormat(const char* format, ...); 20 21 inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT { 22 return out; 23 } 24 25 template <class First, class... Rest> 26 inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) { 27 out << std::forward<First>(f); 28 return StrCatImp(out, std::forward<Rest>(rest)...); 29 } 30 31 template <class... Args> 32 inline std::string StrCat(Args&&... args) { 33 std::ostringstream ss; 34 StrCatImp(ss, std::forward<Args>(args)...); 35 return ss.str(); 36 } 37 38 void ReplaceAll(std::string* str, const std::string& from, 39 const std::string& to); 40 41 #ifdef BENCHMARK_STL_ANDROID_GNUSTL 42 /* 43 * GNU STL in Android NDK lacks support for some C++11 functions, including 44 * stoul, stoi, stod. We reimplement them here using C functions strtoul, 45 * strtol, strtod. Note that reimplemented functions are in benchmark:: 46 * namespace, not std:: namespace. 47 */ 48 unsigned long stoul(const std::string& str, size_t* pos = nullptr, 49 int base = 10); 50 int stoi(const std::string& str, size_t* pos = nullptr, int base = 10); 51 double stod(const std::string& str, size_t* pos = nullptr); 52 #else 53 using std::stoul; 54 using std::stoi; 55 using std::stod; 56 #endif 57 58 } // end namespace benchmark 59 60 #endif // BENCHMARK_STRING_UTIL_H_