Index: third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Timestamps.java |
diff --git a/third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Timestamps.java b/third_party/protobuf/java/util/src/main/java/com/google/protobuf/util/Timestamps.java |
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index 0000000000000000000000000000000000000000..2160e4d57ddda9c447df6f25cefdbb3a0639f556 |
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+// Protocol Buffers - Google's data interchange format |
+// Copyright 2008 Google Inc. All rights reserved. |
+// https://developers.google.com/protocol-buffers/ |
+// |
+// Redistribution and use in source and binary forms, with or without |
+// modification, are permitted provided that the following conditions are |
+// met: |
+// |
+// * Redistributions of source code must retain the above copyright |
+// notice, this list of conditions and the following disclaimer. |
+// * Redistributions in binary form must reproduce the above |
+// copyright notice, this list of conditions and the following disclaimer |
+// in the documentation and/or other materials provided with the |
+// distribution. |
+// * Neither the name of Google Inc. nor the names of its |
+// contributors may be used to endorse or promote products derived from |
+// this software without specific prior written permission. |
+// |
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ |
+package com.google.protobuf.util; |
+ |
+import static com.google.common.base.Preconditions.checkArgument; |
+import static com.google.common.math.IntMath.checkedAdd; |
+import static com.google.common.math.IntMath.checkedSubtract; |
+import static com.google.common.math.LongMath.checkedAdd; |
+import static com.google.common.math.LongMath.checkedMultiply; |
+import static com.google.common.math.LongMath.checkedSubtract; |
+ |
+import com.google.protobuf.Duration; |
+import com.google.protobuf.Timestamp; |
+import java.text.ParseException; |
+import java.text.SimpleDateFormat; |
+import java.util.Comparator; |
+import java.util.Date; |
+import java.util.GregorianCalendar; |
+import java.util.TimeZone; |
+ |
+/** |
+ * Utilities to help create/manipulate {@code protobuf/timestamp.proto}. All operations throw an |
+ * {@link IllegalArgumentException} if the input(s) are not {@linkplain #isValid(Timestamp) valid}. |
+ */ |
+public final class Timestamps { |
+ |
+ // Timestamp for "0001-01-01T00:00:00Z" |
+ static final long TIMESTAMP_SECONDS_MIN = -62135596800L; |
+ |
+ // Timestamp for "9999-12-31T23:59:59Z" |
+ static final long TIMESTAMP_SECONDS_MAX = 253402300799L; |
+ |
+ static final long NANOS_PER_SECOND = 1000000000; |
+ static final long NANOS_PER_MILLISECOND = 1000000; |
+ static final long NANOS_PER_MICROSECOND = 1000; |
+ static final long MILLIS_PER_SECOND = 1000; |
+ static final long MICROS_PER_SECOND = 1000000; |
+ |
+ /** A constant holding the minimum valid {@link Timestamp}, {@code 0001-01-01T00:00:00Z}. */ |
+ public static final Timestamp MIN_VALUE = |
+ Timestamp.newBuilder().setSeconds(TIMESTAMP_SECONDS_MIN).setNanos(0).build(); |
+ |
+ /** |
+ * A constant holding the maximum valid {@link Timestamp}, {@code 9999-12-31T23:59:59.999999999Z}. |
+ */ |
+ public static final Timestamp MAX_VALUE = |
+ Timestamp.newBuilder().setSeconds(TIMESTAMP_SECONDS_MAX).setNanos(999999999).build(); |
+ |
+ private static final ThreadLocal<SimpleDateFormat> timestampFormat = |
+ new ThreadLocal<SimpleDateFormat>() { |
+ @Override |
+ protected SimpleDateFormat initialValue() { |
+ return createTimestampFormat(); |
+ } |
+ }; |
+ |
+ private static SimpleDateFormat createTimestampFormat() { |
+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); |
+ GregorianCalendar calendar = new GregorianCalendar(TimeZone.getTimeZone("UTC")); |
+ // We use Proleptic Gregorian Calendar (i.e., Gregorian calendar extends |
+ // backwards to year one) for timestamp formating. |
+ calendar.setGregorianChange(new Date(Long.MIN_VALUE)); |
+ sdf.setCalendar(calendar); |
+ return sdf; |
+ } |
+ |
+ private Timestamps() {} |
+ |
+ private static final Comparator<Timestamp> COMPARATOR = |
+ new Comparator<Timestamp>() { |
+ @Override |
+ public int compare(Timestamp t1, Timestamp t2) { |
+ checkValid(t1); |
+ checkValid(t2); |
+ int secDiff = Long.compare(t1.getSeconds(), t2.getSeconds()); |
+ return (secDiff != 0) ? secDiff : Integer.compare(t1.getNanos(), t2.getNanos()); |
+ } |
+ }; |
+ |
+ /** |
+ * Returns a {@link Comparator} for {@link Timestamp}s which sorts in increasing chronological |
+ * order. Nulls and invalid {@link Timestamp}s are not allowed (see {@link #isValid}). |
+ */ |
+ public static Comparator<Timestamp> comparator() { |
+ return COMPARATOR; |
+ } |
+ |
+ /** |
+ * Returns true if the given {@link Timestamp} is valid. The {@code seconds} value must be in the |
+ * range [-62,135,596,800, +253,402,300,799] (i.e., between 0001-01-01T00:00:00Z and |
+ * 9999-12-31T23:59:59Z). The {@code nanos} value must be in the range [0, +999,999,999]. |
+ * |
+ * <p><b>Note:</b> Negative second values with fractional seconds must still have non-negative |
+ * nanos values that count forward in time. |
+ */ |
+ public static boolean isValid(Timestamp timestamp) { |
+ return isValid(timestamp.getSeconds(), timestamp.getNanos()); |
+ } |
+ |
+ /** |
+ * Returns true if the given number of seconds and nanos is a valid {@link Timestamp}. The {@code |
+ * seconds} value must be in the range [-62,135,596,800, +253,402,300,799] (i.e., between |
+ * 0001-01-01T00:00:00Z and 9999-12-31T23:59:59Z). The {@code nanos} value must be in the range |
+ * [0, +999,999,999]. |
+ * |
+ * <p><b>Note:</b> Negative second values with fractional seconds must still have non-negative |
+ * nanos values that count forward in time. |
+ */ |
+ public static boolean isValid(long seconds, int nanos) { |
+ if (seconds < TIMESTAMP_SECONDS_MIN || seconds > TIMESTAMP_SECONDS_MAX) { |
+ return false; |
+ } |
+ if (nanos < 0 || nanos >= NANOS_PER_SECOND) { |
+ return false; |
+ } |
+ return true; |
+ } |
+ |
+ /** Throws an {@link IllegalArgumentException} if the given {@link Timestamp} is not valid. */ |
+ public static Timestamp checkValid(Timestamp timestamp) { |
+ long seconds = timestamp.getSeconds(); |
+ int nanos = timestamp.getNanos(); |
+ checkArgument( |
+ isValid(seconds, nanos), |
+ "Timestamp is not valid. See proto definition for valid values. " |
+ + "Seconds (%s) must be in range [-62,135,596,800, +253,402,300,799]. " |
+ + "Nanos (%s) must be in range [0, +999,999,999].", |
+ seconds, |
+ nanos); |
+ return timestamp; |
+ } |
+ |
+ /** |
+ * Convert Timestamp to RFC 3339 date string format. The output will always be Z-normalized and |
+ * uses 3, 6 or 9 fractional digits as required to represent the exact value. Note that Timestamp |
+ * can only represent time from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. See |
+ * https://www.ietf.org/rfc/rfc3339.txt |
+ * |
+ * <p>Example of generated format: "1972-01-01T10:00:20.021Z" |
+ * |
+ * @return The string representation of the given timestamp. |
+ * @throws IllegalArgumentException if the given timestamp is not in the valid range. |
+ */ |
+ public static String toString(Timestamp timestamp) { |
+ checkValid(timestamp); |
+ |
+ long seconds = timestamp.getSeconds(); |
+ int nanos = timestamp.getNanos(); |
+ |
+ StringBuilder result = new StringBuilder(); |
+ // Format the seconds part. |
+ Date date = new Date(seconds * MILLIS_PER_SECOND); |
+ result.append(timestampFormat.get().format(date)); |
+ // Format the nanos part. |
+ if (nanos != 0) { |
+ result.append("."); |
+ result.append(formatNanos(nanos)); |
+ } |
+ result.append("Z"); |
+ return result.toString(); |
+ } |
+ |
+ /** |
+ * Parse from RFC 3339 date string to Timestamp. This method accepts all outputs of {@link |
+ * #toString(Timestamp)} and it also accepts any fractional digits (or none) and any offset as |
+ * long as they fit into nano-seconds precision. |
+ * |
+ * <p>Example of accepted format: "1972-01-01T10:00:20.021-05:00" |
+ * |
+ * @return A Timestamp parsed from the string. |
+ * @throws ParseException if parsing fails. |
+ */ |
+ public static Timestamp parse(String value) throws ParseException { |
+ int dayOffset = value.indexOf('T'); |
+ if (dayOffset == -1) { |
+ throw new ParseException("Failed to parse timestamp: invalid timestamp \"" + value + "\"", 0); |
+ } |
+ int timezoneOffsetPosition = value.indexOf('Z', dayOffset); |
+ if (timezoneOffsetPosition == -1) { |
+ timezoneOffsetPosition = value.indexOf('+', dayOffset); |
+ } |
+ if (timezoneOffsetPosition == -1) { |
+ timezoneOffsetPosition = value.indexOf('-', dayOffset); |
+ } |
+ if (timezoneOffsetPosition == -1) { |
+ throw new ParseException("Failed to parse timestamp: missing valid timezone offset.", 0); |
+ } |
+ // Parse seconds and nanos. |
+ String timeValue = value.substring(0, timezoneOffsetPosition); |
+ String secondValue = timeValue; |
+ String nanoValue = ""; |
+ int pointPosition = timeValue.indexOf('.'); |
+ if (pointPosition != -1) { |
+ secondValue = timeValue.substring(0, pointPosition); |
+ nanoValue = timeValue.substring(pointPosition + 1); |
+ } |
+ Date date = timestampFormat.get().parse(secondValue); |
+ long seconds = date.getTime() / MILLIS_PER_SECOND; |
+ int nanos = nanoValue.isEmpty() ? 0 : parseNanos(nanoValue); |
+ // Parse timezone offsets. |
+ if (value.charAt(timezoneOffsetPosition) == 'Z') { |
+ if (value.length() != timezoneOffsetPosition + 1) { |
+ throw new ParseException( |
+ "Failed to parse timestamp: invalid trailing data \"" |
+ + value.substring(timezoneOffsetPosition) |
+ + "\"", |
+ 0); |
+ } |
+ } else { |
+ String offsetValue = value.substring(timezoneOffsetPosition + 1); |
+ long offset = parseTimezoneOffset(offsetValue); |
+ if (value.charAt(timezoneOffsetPosition) == '+') { |
+ seconds -= offset; |
+ } else { |
+ seconds += offset; |
+ } |
+ } |
+ try { |
+ return normalizedTimestamp(seconds, nanos); |
+ } catch (IllegalArgumentException e) { |
+ throw new ParseException("Failed to parse timestamp: timestamp is out of range.", 0); |
+ } |
+ } |
+ |
+ /** Create a Timestamp from the number of seconds elapsed from the epoch. */ |
+ public static Timestamp fromSeconds(long seconds) { |
+ return normalizedTimestamp(seconds, 0); |
+ } |
+ |
+ /** |
+ * Convert a Timestamp to the number of seconds elapsed from the epoch. |
+ * |
+ * <p>The result will be rounded down to the nearest second. E.g., if the timestamp represents |
+ * "1969-12-31T23:59:59.999999999Z", it will be rounded to -1 second. |
+ */ |
+ public static long toSeconds(Timestamp timestamp) { |
+ return checkValid(timestamp).getSeconds(); |
+ } |
+ |
+ /** Create a Timestamp from the number of milliseconds elapsed from the epoch. */ |
+ public static Timestamp fromMillis(long milliseconds) { |
+ return normalizedTimestamp( |
+ milliseconds / MILLIS_PER_SECOND, |
+ (int) (milliseconds % MILLIS_PER_SECOND * NANOS_PER_MILLISECOND)); |
+ } |
+ |
+ /** |
+ * Convert a Timestamp to the number of milliseconds elapsed from the epoch. |
+ * |
+ * <p>The result will be rounded down to the nearest millisecond. E.g., if the timestamp |
+ * represents "1969-12-31T23:59:59.999999999Z", it will be rounded to -1 millisecond. |
+ */ |
+ public static long toMillis(Timestamp timestamp) { |
+ checkValid(timestamp); |
+ return checkedAdd( |
+ checkedMultiply(timestamp.getSeconds(), MILLIS_PER_SECOND), |
+ timestamp.getNanos() / NANOS_PER_MILLISECOND); |
+ } |
+ |
+ /** Create a Timestamp from the number of microseconds elapsed from the epoch. */ |
+ public static Timestamp fromMicros(long microseconds) { |
+ return normalizedTimestamp( |
+ microseconds / MICROS_PER_SECOND, |
+ (int) (microseconds % MICROS_PER_SECOND * NANOS_PER_MICROSECOND)); |
+ } |
+ |
+ /** |
+ * Convert a Timestamp to the number of microseconds elapsed from the epoch. |
+ * |
+ * <p>The result will be rounded down to the nearest microsecond. E.g., if the timestamp |
+ * represents "1969-12-31T23:59:59.999999999Z", it will be rounded to -1 millisecond. |
+ */ |
+ public static long toMicros(Timestamp timestamp) { |
+ checkValid(timestamp); |
+ return checkedAdd( |
+ checkedMultiply(timestamp.getSeconds(), MICROS_PER_SECOND), |
+ timestamp.getNanos() / NANOS_PER_MICROSECOND); |
+ } |
+ |
+ /** Create a Timestamp from the number of nanoseconds elapsed from the epoch. */ |
+ public static Timestamp fromNanos(long nanoseconds) { |
+ return normalizedTimestamp( |
+ nanoseconds / NANOS_PER_SECOND, (int) (nanoseconds % NANOS_PER_SECOND)); |
+ } |
+ |
+ /** Convert a Timestamp to the number of nanoseconds elapsed from the epoch. */ |
+ public static long toNanos(Timestamp timestamp) { |
+ checkValid(timestamp); |
+ return checkedAdd( |
+ checkedMultiply(timestamp.getSeconds(), NANOS_PER_SECOND), timestamp.getNanos()); |
+ } |
+ |
+ /** Calculate the difference between two timestamps. */ |
+ public static Duration between(Timestamp from, Timestamp to) { |
+ checkValid(from); |
+ checkValid(to); |
+ return Durations.normalizedDuration( |
+ checkedSubtract(to.getSeconds(), from.getSeconds()), |
+ checkedSubtract(to.getNanos(), from.getNanos())); |
+ } |
+ |
+ /** Add a duration to a timestamp. */ |
+ public static Timestamp add(Timestamp start, Duration length) { |
+ checkValid(start); |
+ Durations.checkValid(length); |
+ return normalizedTimestamp( |
+ checkedAdd(start.getSeconds(), length.getSeconds()), |
+ checkedAdd(start.getNanos(), length.getNanos())); |
+ } |
+ |
+ /** Subtract a duration from a timestamp. */ |
+ public static Timestamp subtract(Timestamp start, Duration length) { |
+ checkValid(start); |
+ Durations.checkValid(length); |
+ return normalizedTimestamp( |
+ checkedSubtract(start.getSeconds(), length.getSeconds()), |
+ checkedSubtract(start.getNanos(), length.getNanos())); |
+ } |
+ |
+ static Timestamp normalizedTimestamp(long seconds, int nanos) { |
+ if (nanos <= -NANOS_PER_SECOND || nanos >= NANOS_PER_SECOND) { |
+ seconds = checkedAdd(seconds, nanos / NANOS_PER_SECOND); |
+ nanos %= NANOS_PER_SECOND; |
+ } |
+ if (nanos < 0) { |
+ nanos += NANOS_PER_SECOND; // no overflow since nanos is negative (and we're adding) |
+ seconds = checkedSubtract(seconds, 1); |
+ } |
+ Timestamp timestamp = Timestamp.newBuilder().setSeconds(seconds).setNanos(nanos).build(); |
+ return checkValid(timestamp); |
+ } |
+ |
+ private static long parseTimezoneOffset(String value) throws ParseException { |
+ int pos = value.indexOf(':'); |
+ if (pos == -1) { |
+ throw new ParseException("Invalid offset value: " + value, 0); |
+ } |
+ String hours = value.substring(0, pos); |
+ String minutes = value.substring(pos + 1); |
+ return (Long.parseLong(hours) * 60 + Long.parseLong(minutes)) * 60; |
+ } |
+ |
+ static int parseNanos(String value) throws ParseException { |
+ int result = 0; |
+ for (int i = 0; i < 9; ++i) { |
+ result = result * 10; |
+ if (i < value.length()) { |
+ if (value.charAt(i) < '0' || value.charAt(i) > '9') { |
+ throw new ParseException("Invalid nanoseconds.", 0); |
+ } |
+ result += value.charAt(i) - '0'; |
+ } |
+ } |
+ return result; |
+ } |
+ |
+ /** Format the nano part of a timestamp or a duration. */ |
+ static String formatNanos(int nanos) { |
+ // Determine whether to use 3, 6, or 9 digits for the nano part. |
+ if (nanos % NANOS_PER_MILLISECOND == 0) { |
+ return String.format("%1$03d", nanos / NANOS_PER_MILLISECOND); |
+ } else if (nanos % NANOS_PER_MICROSECOND == 0) { |
+ return String.format("%1$06d", nanos / NANOS_PER_MICROSECOND); |
+ } else { |
+ return String.format("%1$09d", nanos); |
+ } |
+ } |
+} |