Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/stubs/time.cc

Index: third_party/protobuf/src/google/protobuf/stubs/time.cc
diff --git a/third_party/protobuf/src/google/protobuf/stubs/time.cc b/third_party/protobuf/src/google/protobuf/stubs/time.cc
deleted file mode 100644
index 49c0412c17661dd0f9942fadca4781e51f0d8f54..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/stubs/time.cc
+++ /dev/null
@@ -1,365 +0,0 @@
-#include <google/protobuf/stubs/time.h>
-
-#include <ctime>
-
-#include <google/protobuf/stubs/stringprintf.h>
-#include <google/protobuf/stubs/strutil.h>
-
-namespace google {
-namespace protobuf {
-namespace internal {
-
-namespace {
-static const int64 kSecondsPerMinute = 60;
-static const int64 kSecondsPerHour = 3600;
-static const int64 kSecondsPerDay = kSecondsPerHour * 24;
-static const int64 kSecondsPer400Years =
-    kSecondsPerDay * (400 * 365 + 400 / 4 - 3);
-// Seconds from 0001-01-01T00:00:00 to 1970-01-01T:00:00:00
-static const int64 kSecondsFromEraToEpoch = 62135596800LL;
-// The range of timestamp values we support.
-static const int64 kMinTime = -62135596800LL;  // 0001-01-01T00:00:00
-static const int64 kMaxTime = 253402300799LL;  // 9999-12-31T23:59:59
-
-static const int kNanosPerMillisecond = 1000000;
-static const int kNanosPerMicrosecond = 1000;
-
-// Count the seconds from the given year (start at Jan 1, 00:00) to 100 years
-// after.
-int64 SecondsPer100Years(int year) {
-  if (year % 400 == 0 || year % 400 > 300) {
-    return kSecondsPerDay * (100 * 365 + 100 / 4);
-  } else {
-    return kSecondsPerDay * (100 * 365 + 100 / 4 - 1);
-  }
-}
-
-// Count the seconds from the given year (start at Jan 1, 00:00) to 4 years
-// after.
-int64 SecondsPer4Years(int year) {
-  if ((year % 100 == 0 || year % 100 > 96) &&
-      !(year % 400 == 0 || year % 400 > 396)) {
-    // No leap years.
-    return kSecondsPerDay * (4 * 365);
-  } else {
-    // One leap years.
-    return kSecondsPerDay * (4 * 365 + 1);
-  }
-}
-
-bool IsLeapYear(int year) {
-  return year % 400 == 0 || (year % 4 == 0 && year % 100 != 0);
-}
-
-int64 SecondsPerYear(int year) {
-  return kSecondsPerDay * (IsLeapYear(year) ? 366 : 365);
-}
-
-static const int kDaysInMonth[13] = {
-  0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-int64 SecondsPerMonth(int month, bool leap) {
-  if (month == 2 && leap) {
-    return kSecondsPerDay * (kDaysInMonth[month] + 1);
-  }
-  return kSecondsPerDay * kDaysInMonth[month];
-}
-
-static const int kDaysSinceJan[13] = {
-  0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
-};
-
-bool ValidateDateTime(const DateTime& time) {
-  if (time.year < 1 || time.year > 9999 ||
-      time.month < 1 || time.month > 12 ||
-      time.day < 1 || time.day > 31 ||
-      time.hour < 0 || time.hour > 23 ||
-      time.minute < 0 || time.minute > 59 ||
-      time.second < 0 || time.second > 59) {
-    return false;
-  }
-  if (time.month == 2 && IsLeapYear(time.year)) {
-    return time.month <= kDaysInMonth[time.month] + 1;
-  } else {
-    return time.month <= kDaysInMonth[time.month];
-  }
-}
-
-// Count the number of seconds elapsed from 0001-01-01T00:00:00 to the given
-// time.
-int64 SecondsSinceCommonEra(const DateTime& time) {
-  int64 result = 0;
-  // Years should be between 1 and 9999.
-  assert(time.year >= 1 && time.year <= 9999);
-  int year = 1;
-  if ((time.year - year) >= 400) {
-    int count_400years = (time.year - year) / 400;
-    result += kSecondsPer400Years * count_400years;
-    year += count_400years * 400;
-  }
-  while ((time.year - year) >= 100) {
-    result += SecondsPer100Years(year);
-    year += 100;
-  }
-  while ((time.year - year) >= 4) {
-    result += SecondsPer4Years(year);
-    year += 4;
-  }
-  while (time.year > year) {
-    result += SecondsPerYear(year);
-    ++year;
-  }
-  // Months should be between 1 and 12.
-  assert(time.month >= 1 && time.month <= 12);
-  int month = time.month;
-  result += kSecondsPerDay * kDaysSinceJan[month];
-  if (month > 2 && IsLeapYear(year)) {
-    result += kSecondsPerDay;
-  }
-  assert(time.day >= 1 &&
-         time.day <= (month == 2 && IsLeapYear(year)
-                          ? kDaysInMonth[month] + 1
-                          : kDaysInMonth[month]));
-  result += kSecondsPerDay * (time.day - 1);
-  result += kSecondsPerHour * time.hour +
-      kSecondsPerMinute * time.minute +
-      time.second;
-  return result;
-}
-
-// Format nanoseconds with either 3, 6, or 9 digits depending on the required
-// precision to represent the exact value.
-string FormatNanos(int32 nanos) {
-  if (nanos % kNanosPerMillisecond == 0) {
-    return StringPrintf("%03d", nanos / kNanosPerMillisecond);
-  } else if (nanos % kNanosPerMicrosecond == 0) {
-    return StringPrintf("%06d", nanos / kNanosPerMicrosecond);
-  } else {
-    return StringPrintf("%09d", nanos);
-  }
-}
-
-// Parses an integer from a null-terminated char sequence. The method
-// consumes at most "width" chars. Returns a pointer after the consumed
-// integer, or NULL if the data does not start with an integer or the
-// integer value does not fall in the range of [min_value, max_value].
-const char* ParseInt(const char* data, int width, int min_value,
-                     int max_value, int* result) {
-  if (!ascii_isdigit(*data)) {
-    return NULL;
-  }
-  int value = 0;
-  for (int i = 0; i < width; ++i, ++data) {
-    if (ascii_isdigit(*data)) {
-      value = value * 10 + (*data - '0');
-    } else {
-      break;
-    }
-  }
-  if (value >= min_value && value <= max_value) {
-    *result = value;
-    return data;
-  } else {
-    return NULL;
-  }
-}
-
-// Consumes the fractional parts of a second into nanos. For example,
-// "010" will be parsed to 10000000 nanos.
-const char* ParseNanos(const char* data, int32* nanos) {
-  if (!ascii_isdigit(*data)) {
-    return NULL;
-  }
-  int value = 0;
-  int len = 0;
-  // Consume as many digits as there are but only take the first 9 into
-  // account.
-  while (ascii_isdigit(*data)) {
-    if (len < 9) {
-      value = value * 10 + *data - '0';
-    }
-    ++len;
-    ++data;
-  }
-  while (len < 9) {
-    value = value * 10;
-    ++len;
-  }
-  *nanos = value;
-  return data;
-}
-
-const char* ParseTimezoneOffset(const char* data, int64* offset) {
-  // Accept format "HH:MM". E.g., "08:00"
-  int hour;
-  if ((data = ParseInt(data, 2, 0, 23, &hour)) == NULL) {
-    return NULL;
-  }
-  if (*data++ != ':') {
-    return NULL;
-  }
-  int minute;
-  if ((data = ParseInt(data, 2, 0, 59, &minute)) == NULL) {
-    return NULL;
-  }
-  *offset = (hour * 60 + minute) * 60;
-  return data;
-}
-}  // namespace
-
-bool SecondsToDateTime(int64 seconds, DateTime* time) {
-  if (seconds < kMinTime || seconds > kMaxTime) {
-    return false;
-  }
-  // It's easier to calcuate the DateTime starting from 0001-01-01T00:00:00
-  seconds = seconds + kSecondsFromEraToEpoch;
-  int year = 1;
-  if (seconds >= kSecondsPer400Years) {
-    int count_400years = seconds / kSecondsPer400Years;
-    year += 400 * count_400years;
-    seconds %= kSecondsPer400Years;
-  }
-  while (seconds >= SecondsPer100Years(year)) {
-    seconds -= SecondsPer100Years(year);
-    year += 100;
-  }
-  while (seconds >= SecondsPer4Years(year)) {
-    seconds -= SecondsPer4Years(year);
-    year += 4;
-  }
-  while (seconds >= SecondsPerYear(year)) {
-    seconds -= SecondsPerYear(year);
-    year += 1;
-  }
-  bool leap = IsLeapYear(year);
-  int month = 1;
-  while (seconds >= SecondsPerMonth(month, leap)) {
-    seconds -= SecondsPerMonth(month, leap);
-    ++month;
-  }
-  int day = 1 + seconds / kSecondsPerDay;
-  seconds %= kSecondsPerDay;
-  int hour = seconds / kSecondsPerHour;
-  seconds %= kSecondsPerHour;
-  int minute = seconds / kSecondsPerMinute;
-  seconds %= kSecondsPerMinute;
-  time->year = year;
-  time->month = month;
-  time->day = day;
-  time->hour = hour;
-  time->minute = minute;
-  time->second = static_cast<int>(seconds);
-  return true;
-}
-
-bool DateTimeToSeconds(const DateTime& time, int64* seconds) {
-  if (!ValidateDateTime(time)) {
-    return false;
-  }
-  *seconds = SecondsSinceCommonEra(time) - kSecondsFromEraToEpoch;
-  return true;
-}
-
-void GetCurrentTime(int64* seconds, int32* nanos) {
-  // TODO(xiaofeng): Improve the accuracy of this implementation (or just
-  // remove this method from protobuf).
-  *seconds = time(NULL);
-  *nanos = 0;
-}
-
-string FormatTime(int64 seconds, int32 nanos) {
-  DateTime time;
-  if (nanos < 0 || nanos > 999999999 || !SecondsToDateTime(seconds, &time)) {
-    return "InvalidTime";
-  }
-  string result = StringPrintf("%04d-%02d-%02dT%02d:%02d:%02d",
-                               time.year, time.month, time.day,
-                               time.hour, time.minute, time.second);
-  if (nanos != 0) {
-    result += "." + FormatNanos(nanos);
-  }
-  return result + "Z";
-}
-
-bool ParseTime(const string& value, int64* seconds, int32* nanos) {
-  DateTime time;
-  const char* data = value.c_str();
-  // We only accept:
-  //   Z-normalized: 2015-05-20T13:29:35.120Z
-  //   With UTC offset: 2015-05-20T13:29:35.120-08:00
-
-  // Parse year
-  if ((data = ParseInt(data, 4, 1, 9999, &time.year)) == NULL) {
-    return false;
-  }
-  // Expect '-'
-  if (*data++ != '-') return false;
-  // Parse month
-  if ((data = ParseInt(data, 2, 1, 12, &time.month)) == NULL) {
-    return false;
-  }
-  // Expect '-'
-  if (*data++ != '-') return false;
-  // Parse day
-  if ((data = ParseInt(data, 2, 1, 31, &time.day)) == NULL) {
-    return false;
-  }
-  // Expect 'T'
-  if (*data++ != 'T') return false;
-  // Parse hour
-  if ((data = ParseInt(data, 2, 0, 23, &time.hour)) == NULL) {
-    return false;
-  }
-  // Expect ':'
-  if (*data++ != ':') return false;
-  // Parse minute
-  if ((data = ParseInt(data, 2, 0, 59, &time.minute)) == NULL) {
-    return false;
-  }
-  // Expect ':'
-  if (*data++ != ':') return false;
-  // Parse second
-  if ((data = ParseInt(data, 2, 0, 59, &time.second)) == NULL) {
-    return false;
-  }
-  if (!DateTimeToSeconds(time, seconds)) {
-    return false;
-  }
-  // Parse nanoseconds.
-  if (*data == '.') {
-    ++data;
-    // Parse nanoseconds.
-    if ((data = ParseNanos(data, nanos)) == NULL) {
-      return false;
-    }
-  } else {
-    *nanos = 0;
-  }
-  // Parse UTC offsets.
-  if (*data == 'Z') {
-    ++data;
-  } else if (*data == '+') {
-    ++data;
-    int64 offset;
-    if ((data = ParseTimezoneOffset(data, &offset)) == NULL) {
-      return false;
-    }
-    *seconds -= offset;
-  } else if (*data == '-') {
-    ++data;
-    int64 offset;
-    if ((data = ParseTimezoneOffset(data, &offset)) == NULL) {
-      return false;
-    }
-    *seconds += offset;
-  } else {
-    return false;
-  }
-  // Done with parsing.
-  return *data == 0;
-}
-
-}  // namespace internal
-}  // namespace protobuf
-}  // namespace google