diff -r 000000000000 -r 6474c204b198 mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/cookie/DateUtils.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/cookie/DateUtils.java Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,259 @@ +/* + * ==================================================================== + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + * ==================================================================== + * + * This software consists of voluntary contributions made by many + * individuals on behalf of the Apache Software Foundation. For more + * information on the Apache Software Foundation, please see + * . + * + */ + +package ch.boye.httpclientandroidlib.impl.cookie; + +import java.lang.ref.SoftReference; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Calendar; +import java.util.Date; +import java.util.HashMap; +import java.util.Locale; +import java.util.Map; +import java.util.TimeZone; + +import ch.boye.httpclientandroidlib.annotation.Immutable; + +/** + * A utility class for parsing and formatting HTTP dates as used in cookies and + * other headers. This class handles dates as defined by RFC 2616 section + * 3.3.1 as well as some other common non-standard formats. + * + * + * @since 4.0 + */ +@Immutable +public final class DateUtils { + + /** + * Date format pattern used to parse HTTP date headers in RFC 1123 format. + */ + public static final String PATTERN_RFC1123 = "EEE, dd MMM yyyy HH:mm:ss zzz"; + + /** + * Date format pattern used to parse HTTP date headers in RFC 1036 format. + */ + public static final String PATTERN_RFC1036 = "EEEE, dd-MMM-yy HH:mm:ss zzz"; + + /** + * Date format pattern used to parse HTTP date headers in ANSI C + * asctime() format. + */ + public static final String PATTERN_ASCTIME = "EEE MMM d HH:mm:ss yyyy"; + + private static final String[] DEFAULT_PATTERNS = new String[] { + PATTERN_RFC1036, + PATTERN_RFC1123, + PATTERN_ASCTIME + }; + + private static final Date DEFAULT_TWO_DIGIT_YEAR_START; + + public static final TimeZone GMT = TimeZone.getTimeZone("GMT"); + + static { + Calendar calendar = Calendar.getInstance(); + calendar.setTimeZone(GMT); + calendar.set(2000, Calendar.JANUARY, 1, 0, 0, 0); + calendar.set(Calendar.MILLISECOND, 0); + DEFAULT_TWO_DIGIT_YEAR_START = calendar.getTime(); + } + + /** + * Parses a date value. The formats used for parsing the date value are retrieved from + * the default http params. + * + * @param dateValue the date value to parse + * + * @return the parsed date + * + * @throws DateParseException if the value could not be parsed using any of the + * supported date formats + */ + public static Date parseDate(String dateValue) throws DateParseException { + return parseDate(dateValue, null, null); + } + + /** + * Parses the date value using the given date formats. + * + * @param dateValue the date value to parse + * @param dateFormats the date formats to use + * + * @return the parsed date + * + * @throws DateParseException if none of the dataFormats could parse the dateValue + */ + public static Date parseDate(final String dateValue, String[] dateFormats) + throws DateParseException { + return parseDate(dateValue, dateFormats, null); + } + + /** + * Parses the date value using the given date formats. + * + * @param dateValue the date value to parse + * @param dateFormats the date formats to use + * @param startDate During parsing, two digit years will be placed in the range + * startDate to startDate + 100 years. This value may + * be null. When null is given as a parameter, year + * 2000 will be used. + * + * @return the parsed date + * + * @throws DateParseException if none of the dataFormats could parse the dateValue + */ + public static Date parseDate( + String dateValue, + String[] dateFormats, + Date startDate + ) throws DateParseException { + + if (dateValue == null) { + throw new IllegalArgumentException("dateValue is null"); + } + if (dateFormats == null) { + dateFormats = DEFAULT_PATTERNS; + } + if (startDate == null) { + startDate = DEFAULT_TWO_DIGIT_YEAR_START; + } + // trim single quotes around date if present + // see issue #5279 + if (dateValue.length() > 1 + && dateValue.startsWith("'") + && dateValue.endsWith("'") + ) { + dateValue = dateValue.substring (1, dateValue.length() - 1); + } + + for (String dateFormat : dateFormats) { + SimpleDateFormat dateParser = DateFormatHolder.formatFor(dateFormat); + dateParser.set2DigitYearStart(startDate); + + try { + return dateParser.parse(dateValue); + } catch (ParseException pe) { + // ignore this exception, we will try the next format + } + } + + // we were unable to parse the date + throw new DateParseException("Unable to parse the date " + dateValue); + } + + /** + * Formats the given date according to the RFC 1123 pattern. + * + * @param date The date to format. + * @return An RFC 1123 formatted date string. + * + * @see #PATTERN_RFC1123 + */ + public static String formatDate(Date date) { + return formatDate(date, PATTERN_RFC1123); + } + + /** + * Formats the given date according to the specified pattern. The pattern + * must conform to that used by the {@link SimpleDateFormat simple date + * format} class. + * + * @param date The date to format. + * @param pattern The pattern to use for formatting the date. + * @return A formatted date string. + * + * @throws IllegalArgumentException If the given date pattern is invalid. + * + * @see SimpleDateFormat + */ + public static String formatDate(Date date, String pattern) { + if (date == null) throw new IllegalArgumentException("date is null"); + if (pattern == null) throw new IllegalArgumentException("pattern is null"); + + SimpleDateFormat formatter = DateFormatHolder.formatFor(pattern); + return formatter.format(date); + } + + /** This class should not be instantiated. */ + private DateUtils() { + } + + /** + * A factory for {@link SimpleDateFormat}s. The instances are stored in a + * threadlocal way because SimpleDateFormat is not threadsafe as noted in + * {@link SimpleDateFormat its javadoc}. + * + */ + final static class DateFormatHolder { + + private static final ThreadLocal>> + THREADLOCAL_FORMATS = new ThreadLocal>>() { + + @Override + protected SoftReference> initialValue() { + return new SoftReference>( + new HashMap()); + } + + }; + + /** + * creates a {@link SimpleDateFormat} for the requested format string. + * + * @param pattern + * a non-null format String according to + * {@link SimpleDateFormat}. The format is not checked against + * null since all paths go through + * {@link DateUtils}. + * @return the requested format. This simple dateformat should not be used + * to {@link SimpleDateFormat#applyPattern(String) apply} to a + * different pattern. + */ + public static SimpleDateFormat formatFor(String pattern) { + SoftReference> ref = THREADLOCAL_FORMATS.get(); + Map formats = ref.get(); + if (formats == null) { + formats = new HashMap(); + THREADLOCAL_FORMATS.set( + new SoftReference>(formats)); + } + + SimpleDateFormat format = formats.get(pattern); + if (format == null) { + format = new SimpleDateFormat(pattern, Locale.US); + format.setTimeZone(TimeZone.getTimeZone("GMT")); + formats.put(pattern, format); + } + + return format; + } + + } + +}