File size: 1,234 Bytes
d21d362 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | #include "time_stamp.h"
#include <cstdio>
#include <cstdarg>
#include <memory>
#include <string>
timestamp_t::timestamp_t(int s, int e)
: start(s), end(e) {}
timestamp_t& timestamp_t::operator=(const timestamp_t& a) {
if (this != &a) {
start = a.start;
end = a.end;
}
return *this;
}
bool timestamp_t::operator==(const timestamp_t& a) const {
return (start == a.start && end == a.end);
}
std::string timestamp_t::c_str() const {
return format("{start:%08d, end:%08d}", start, end);
}
std::string timestamp_t::format(const char* fmt, ...) const {
char buf[256];
va_list args;
va_start(args, fmt);
const auto r = std::vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (r < 0)
return {};
const size_t len = r;
if (len < sizeof(buf))
return std::string(buf, len);
#if __cplusplus >= 201703L
std::string s(len + 1, '\0');
va_start(args, fmt);
std::vsnprintf(s.data(), len + 1, fmt, args);
va_end(args);
return s;
#else
std::unique_ptr<char[]> vbuf(new char[len + 1]);
va_start(args, fmt);
std::vsnprintf(vbuf.get(), len + 1, fmt, args);
va_end(args);
return std::string(vbuf.get(), len);
#endif
} |