diff options
Diffstat (limited to 'lib/Support/Chrono.cpp')
| -rw-r--r-- | lib/Support/Chrono.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/Support/Chrono.cpp b/lib/Support/Chrono.cpp index daccaf1fc103..84f5aab6fc45 100644 --- a/lib/Support/Chrono.cpp +++ b/lib/Support/Chrono.cpp @@ -51,4 +51,44 @@ raw_ostream &operator<<(raw_ostream &OS, TimePoint<> TP) { .count())); } +void format_provider<TimePoint<>>::format(const TimePoint<> &T, raw_ostream &OS, + StringRef Style) { + using namespace std::chrono; + TimePoint<seconds> Truncated = time_point_cast<seconds>(T); + auto Fractional = T - Truncated; + struct tm LT = getStructTM(Truncated); + // Handle extensions first. strftime mangles unknown %x on some platforms. + if (Style.empty()) Style = "%Y-%m-%d %H:%M:%S.%N"; + std::string Format; + raw_string_ostream FStream(Format); + for (unsigned I = 0; I < Style.size(); ++I) { + if (Style[I] == '%' && Style.size() > I + 1) switch (Style[I + 1]) { + case 'L': // Milliseconds, from Ruby. + FStream << llvm::format( + "%.3lu", (long)duration_cast<milliseconds>(Fractional).count()); + ++I; + continue; + case 'f': // Microseconds, from Python. + FStream << llvm::format( + "%.6lu", (long)duration_cast<microseconds>(Fractional).count()); + ++I; + continue; + case 'N': // Nanoseconds, from date(1). + FStream << llvm::format( + "%.6lu", (long)duration_cast<nanoseconds>(Fractional).count()); + ++I; + continue; + case '%': // Consume %%, so %%f parses as (%%)f not %(%f) + FStream << "%%"; + ++I; + continue; + } + FStream << Style[I]; + } + FStream.flush(); + char Buffer[256]; // Should be enough for anywhen. + size_t Len = strftime(Buffer, sizeof(Buffer), Format.c_str(), <); + OS << (Len ? Buffer : "BAD-DATE-FORMAT"); +} + } // namespace llvm |