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SAK-25369 - Syllabus datepicker should use internationalized versions (…
…sakaiproject#4196) Syllabus datepicker should use internationalized versions
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104
syllabus/syllabus-app/src/java/org/sakaiproject/tool/syllabus/util/DateUtil.java
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| /********************************************************************************** | ||
| * $URL$ | ||
| * $Id$ | ||
| ********************************************************************************** | ||
| * | ||
| * Copyright (c) 2008 The Sakai Foundation | ||
| * | ||
| * Licensed under the Educational Community 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.opensource.org/licenses/ECL-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 org.sakaiproject.tool.syllabus.util; | ||
|
|
||
| import java.text.DateFormat; | ||
| import java.text.ParseException; | ||
| import java.text.SimpleDateFormat; | ||
| import java.time.format.DateTimeFormatter; | ||
| import java.time.format.DateTimeParseException; | ||
| import java.time.LocalDateTime; | ||
| import java.time.ZoneId; | ||
| import java.util.Date; | ||
| import java.util.Locale; | ||
|
|
||
| /** | ||
| * Performs date validation respecting i18n.<br> | ||
| * <b>Note:</b> This class does not support "hi_IN", "ja_JP_JP" and "th_TH" locales. | ||
| */ | ||
| public final class DateUtil { | ||
|
|
||
| private static DateTimeFormatter isoFormatter = DateTimeFormatter.ISO_ZONED_DATE_TIME; | ||
|
|
||
| private DateUtil() { | ||
| } | ||
|
|
||
| /** | ||
| * Performs date validation checking the ISO_ZONED_DATE_TIME format such as '2011-12-03T10:15:30+01:00[Europe/Paris]'. | ||
| * | ||
| * @param date | ||
| * The candidate String date. | ||
| * @return TRUE - Conforms to a valid input date format string.<br> | ||
| * FALSE - Does not conform. | ||
| */ | ||
| public static boolean isValidISODate(final String date) { | ||
| try { | ||
| isoFormatter.parse(date); | ||
| return true; | ||
| } catch (Exception e) { | ||
| return false; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Parse the date string input using the ISO_ZONED_DATE_TIME format such as '2011-12-03T10:15:30+01:00[Europe/Paris]'. | ||
| * | ||
| * @param inputDate | ||
| * The string that needs to be parsed. | ||
| * | ||
| * @throws DateTimeParseException | ||
| * If not a valid date compared to ISO_ZONED_DATE_TIME format | ||
| */ | ||
| public static Date parseISODate(final String inputDate) throws DateTimeParseException { | ||
| Date convertedDate = null; | ||
|
|
||
| try { | ||
| LocalDateTime ldt = LocalDateTime.parse(inputDate, isoFormatter); | ||
| convertedDate = Date.from(ldt.atZone(ZoneId.systemDefault()).toInstant()); | ||
| } catch (DateTimeParseException e) { | ||
| throw new DateTimeParseException (e.getMessage(), inputDate, 0); | ||
| } | ||
|
|
||
| return convertedDate; | ||
| } | ||
| /** | ||
| * Formats the date input to String using the format given. | ||
| * | ||
| * @param inputDate | ||
| * The date that needs to be formatted. | ||
| * @param format | ||
| * The given date-time format. | ||
| * @param locale | ||
| * The given locale. | ||
| * @throws ParseException | ||
| * If not a valid date compared to ISO_ZONED_DATE_TIME format | ||
| */ | ||
| public static String format(Date inputDate, String format, Locale locale){ | ||
| SimpleDateFormat formatter = null; | ||
| try{ | ||
| formatter = new SimpleDateFormat(format, locale); | ||
| return formatter.format(inputDate); | ||
| }catch(Exception ex){ | ||
| formatter = (SimpleDateFormat) DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.US); | ||
| return formatter.format(inputDate); | ||
| } | ||
| } | ||
| } |
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