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Diffstat (limited to 'jetty-http/src/main/java/org/eclipse/jetty/http/DateGenerator.java')
| -rw-r--r-- | jetty-http/src/main/java/org/eclipse/jetty/http/DateGenerator.java | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/jetty-http/src/main/java/org/eclipse/jetty/http/DateGenerator.java b/jetty-http/src/main/java/org/eclipse/jetty/http/DateGenerator.java new file mode 100644 index 0000000000..b1cac66946 --- /dev/null +++ b/jetty-http/src/main/java/org/eclipse/jetty/http/DateGenerator.java @@ -0,0 +1,160 @@ +// +// ======================================================================== +// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd. +// ------------------------------------------------------------------------ +// All rights reserved. This program and the accompanying materials +// are made available under the terms of the Eclipse Public License v1.0 +// and Apache License v2.0 which accompanies this distribution. +// +// The Eclipse Public License is available at +// http://www.eclipse.org/legal/epl-v10.html +// +// The Apache License v2.0 is available at +// http://www.opensource.org/licenses/apache2.0.php +// +// You may elect to redistribute this code under either of these licenses. +// ======================================================================== +// + +package org.eclipse.jetty.http; + +import java.util.Calendar; +import java.util.GregorianCalendar; +import java.util.TimeZone; + +import org.eclipse.jetty.util.StringUtil; + +public class DateGenerator +{ + private static final TimeZone __GMT = TimeZone.getTimeZone("GMT"); + static + { + __GMT.setID("GMT"); + } + + static final String[] DAYS = + { "Sat", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; + static final String[] MONTHS = + { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", "Jan"}; + + + private static final ThreadLocal<DateGenerator> __dateGenerator =new ThreadLocal<DateGenerator>() + { + @Override + protected DateGenerator initialValue() + { + return new DateGenerator(); + } + }; + + + public final static String __01Jan1970=DateGenerator.formatDate(0); + + /** + * Format HTTP date "EEE, dd MMM yyyy HH:mm:ss 'GMT'" + */ + public static String formatDate(long date) + { + return __dateGenerator.get().doFormatDate(date); + } + + /** + * Format "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'" for cookies + */ + public static void formatCookieDate(StringBuilder buf, long date) + { + __dateGenerator.get().doFormatCookieDate(buf,date); + } + + /** + * Format "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'" for cookies + */ + public static String formatCookieDate(long date) + { + StringBuilder buf = new StringBuilder(28); + formatCookieDate(buf, date); + return buf.toString(); + } + + private final StringBuilder buf = new StringBuilder(32); + private final GregorianCalendar gc = new GregorianCalendar(__GMT); + + /** + * Format HTTP date "EEE, dd MMM yyyy HH:mm:ss 'GMT'" + */ + public String doFormatDate(long date) + { + buf.setLength(0); + gc.setTimeInMillis(date); + + int day_of_week = gc.get(Calendar.DAY_OF_WEEK); + int day_of_month = gc.get(Calendar.DAY_OF_MONTH); + int month = gc.get(Calendar.MONTH); + int year = gc.get(Calendar.YEAR); + int century = year / 100; + year = year % 100; + + int hours = gc.get(Calendar.HOUR_OF_DAY); + int minutes = gc.get(Calendar.MINUTE); + int seconds = gc.get(Calendar.SECOND); + + buf.append(DAYS[day_of_week]); + buf.append(','); + buf.append(' '); + StringUtil.append2digits(buf, day_of_month); + + buf.append(' '); + buf.append(MONTHS[month]); + buf.append(' '); + StringUtil.append2digits(buf, century); + StringUtil.append2digits(buf, year); + + buf.append(' '); + StringUtil.append2digits(buf, hours); + buf.append(':'); + StringUtil.append2digits(buf, minutes); + buf.append(':'); + StringUtil.append2digits(buf, seconds); + buf.append(" GMT"); + return buf.toString(); + } + + /** + * Format "EEE, dd-MMM-yy HH:mm:ss 'GMT'" for cookies + */ + public void doFormatCookieDate(StringBuilder buf, long date) + { + gc.setTimeInMillis(date); + + int day_of_week = gc.get(Calendar.DAY_OF_WEEK); + int day_of_month = gc.get(Calendar.DAY_OF_MONTH); + int month = gc.get(Calendar.MONTH); + int year = gc.get(Calendar.YEAR); + year = year % 10000; + + int epoch = (int) ((date / 1000) % (60 * 60 * 24)); + int seconds = epoch % 60; + epoch = epoch / 60; + int minutes = epoch % 60; + int hours = epoch / 60; + + buf.append(DAYS[day_of_week]); + buf.append(','); + buf.append(' '); + StringUtil.append2digits(buf, day_of_month); + + buf.append('-'); + buf.append(MONTHS[month]); + buf.append('-'); + StringUtil.append2digits(buf, year/100); + StringUtil.append2digits(buf, year%100); + + buf.append(' '); + StringUtil.append2digits(buf, hours); + buf.append(':'); + StringUtil.append2digits(buf, minutes); + buf.append(':'); + StringUtil.append2digits(buf, seconds); + buf.append(" GMT"); + } +}
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