mirror of
https://github.com/Michatec/Radio.git
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104 lines
3.3 KiB
Kotlin
104 lines
3.3 KiB
Kotlin
/*
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* DateTimeHelper.kt
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* Implements the DateTimeHelper object
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* A DateTimeHelper provides helper methods for converting Date and Time objects
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*
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* This file is part of
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* TRANSISTOR - Radio App for Android
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*
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* Copyright (c) 2015-22 - Y20K.org
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* Licensed under the MIT-License
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* http://opensource.org/licenses/MIT
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*/
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package com.michatec.radio.helpers
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import android.util.Log
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import com.michatec.radio.Keys
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import java.text.SimpleDateFormat
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import java.util.*
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/*
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* DateTimeHelper object
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*/
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object DateTimeHelper {
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/* Define log tag */
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private val TAG: String = DateTimeHelper::class.java.simpleName
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/* Main class variables */
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private const val pattern: String = "EEE, dd MMM yyyy HH:mm:ss Z"
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private val dateFormat: SimpleDateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
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/* Converts RFC 2822 string representation of a date to DATE */
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fun convertFromRfc2822(dateString: String): Date {
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val date: Date = try {
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// parse date string using standard pattern
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dateFormat.parse((dateString)) ?: Keys.DEFAULT_DATE
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} catch (e: Exception) {
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Log.w(TAG, "Unable to parse. Trying an alternative Date format. $e")
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// try alternative parsing patterns
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tryAlternativeRfc2822Parsing(dateString)
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}
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return date
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}
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/* Converts a DATE to its RFC 2822 string representation */
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fun convertToRfc2822(date: Date): String {
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val dateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
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return dateFormat.format(date)
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}
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/* Converts a milliseconds into a readable format (HH:mm:ss) */
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fun convertToHoursMinutesSeconds(milliseconds: Long, negativeValue: Boolean = false): String {
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// convert milliseconds to hours, minutes, and seconds
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val hours: Long = milliseconds / 1000 / 3600
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val minutes: Long = milliseconds / 1000 % 3600 / 60
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val seconds: Long = milliseconds / 1000 % 60
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val hourPart = if (hours > 0) {
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"${hours.toString().padStart(2, '0')}:"
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} else {
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""
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}
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var timeString =
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"$hourPart${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}"
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if (negativeValue) {
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// add a minus sign if a negative values was requested
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timeString = "-$timeString"
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}
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return timeString
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}
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/* Converts RFC 2822 string representation of a date to DATE - using alternative patterns */
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private fun tryAlternativeRfc2822Parsing(dateString: String): Date {
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var date: Date = Keys.DEFAULT_DATE
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try {
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// try to parse without seconds
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date = SimpleDateFormat("EEE, dd MMM yyyy HH:mm Z", Locale.ENGLISH).parse((dateString))
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?: Keys.DEFAULT_DATE
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} catch (e: Exception) {
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try {
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Log.w(TAG, "Unable to parse. Trying an alternative Date format. $e")
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// try to parse without time zone
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date = SimpleDateFormat(
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"EEE, dd MMM yyyy HH:mm:ss",
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Locale.ENGLISH
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).parse((dateString)) ?: Keys.DEFAULT_DATE
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} catch (e: Exception) {
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Log.e(TAG, "Unable to parse. Returning a default date. $e")
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}
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}
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return date
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}
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}
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