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Kotlin conversion: UTCUtil

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Paul Schaub 2023-10-31 15:10:46 +01:00
parent 05886228df
commit 25a33611fd
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
2 changed files with 62 additions and 65 deletions
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65
sop-java/src/main/java/sop/util/UTCUtil.java
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@ -1,65 +0,0 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package sop.util;
import javax.annotation.Nonnull;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/**
* Utility class to parse and format dates as ISO-8601 UTC timestamps.
*/
public class UTCUtil {
public static final SimpleDateFormat UTC_FORMATTER = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
public static final SimpleDateFormat[] UTC_PARSERS = new SimpleDateFormat[] {
UTC_FORMATTER,
new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX"),
new SimpleDateFormat("yyyyMMdd'T'HHmmss'Z'"),
new SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'")
};
static {
for (SimpleDateFormat f : UTC_PARSERS) {
f.setTimeZone(TimeZone.getTimeZone("UTC"));
}
}
/**
* Parse an ISO-8601 UTC timestamp from a string.
*
* @param dateString string
* @return date
* @throws ParseException if the date string is malformed and cannot be parsed
*/
@Nonnull
public static Date parseUTCDate(String dateString) throws ParseException {
ParseException exception = null;
for (SimpleDateFormat parser : UTC_PARSERS) {
try {
return parser.parse(dateString);
} catch (ParseException e) {
// Store first exception (that of UTC_FORMATTER) to throw if we fail to parse the date
if (exception == null) {
exception = e;
}
// Try next parser
}
}
// No parser worked, so we throw the store exception
throw exception;
}
/**
* Format a date as ISO-8601 UTC timestamp.
*
* @param date date
* @return timestamp string
*/
public static String formatUTCDate(Date date) {
return UTC_FORMATTER.format(date);
}
}

62
sop-java/src/main/kotlin/sop/util/UTCUtil.kt Normal file
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@ -0,0 +1,62 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package sop.util
import java.text.ParseException
import java.text.SimpleDateFormat
import java.util.*
class UTCUtil {
companion object {
@JvmStatic val UTC_FORMATTER = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'")
@JvmStatic
val UTC_PARSERS =
arrayOf(
UTC_FORMATTER,
SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX"),
SimpleDateFormat("yyyyMMdd'T'HHmmss'Z'"),
SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'"))
.onEach { fmt -> fmt.timeZone = TimeZone.getTimeZone("UTC") }
/**
* Parse an ISO-8601 UTC timestamp from a string.
*
* @param dateString string
* @return date
* @throws ParseException if the date string is malformed and cannot be parsed
*/
@JvmStatic
@Throws(ParseException::class)
fun parseUTCDate(dateString: String): Date {
var exception: ParseException? = null
for (parser in UTC_PARSERS) {
try {
return parser.parse(dateString)
} catch (e: ParseException) {
// Store first exception (that of UTC_FORMATTER) to throw if we fail to parse
// the date
if (exception == null) {
exception = e
}
// Try next parser
}
}
throw exception!!
}
/**
* Format a date as ISO-8601 UTC timestamp.
*
* @param date date
* @return timestamp string
*/
@JvmStatic
fun formatUTCDate(date: Date): String {
return UTC_FORMATTER.format(date)
}
}
}