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// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gimd
import java.util.Date
import java.util.TimeZone
import com.google.gimd.text.Formatter
object Timestamp {
def now: Timestamp = apply(System.currentTimeMillis, localOffset)
private val localOffset = TimeZone.getDefault.getRawOffset
def apply(time: Date): Timestamp = apply(time, 0)
def apply(time: Date, offset: Int): Timestamp = apply(time.getTime, offset)
def apply(time: Long): Timestamp = apply(time, 0)
def apply(time: Long, offset: Int): Timestamp = new Timestamp(time, offset)
}
/**
* Date and time value with a matching timezone offset.
*
* @param millisSinceEpoch number of milliseconds since the Java epoch.
* @param offset number of minutes offset from UTC where the timestamp
* was sampled. Negative values are west of UTC, positive values
* are east of UTC.
*/
final class Timestamp(
millisSinceEpoch: Long,
val offset: Int) extends Date(millisSinceEpoch) {
/** Get the TimeZone this time stamp is located in. */
def timeZone = {
val offsetHours = offset.abs / 60
val offsetMins = offset.abs % 60
val tzId = new StringBuilder(8)
tzId.append("GMT")
tzId.append(if (offset < 0) '-' else '+');
if (offsetHours < 10)
tzId.append('0')
tzId.append(offsetHours)
if (offsetMins < 10)
tzId.append('0');
tzId.append(offsetMins)
TimeZone.getTimeZone(tzId.toString())
}
override def equals(that: Any) = that match {
case that: Timestamp =>
this.getTime == that.getTime && this.offset == that.offset
case _ => false
}
override def toString = Formatter.valueString(this)
}
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