Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / http / DateParser.java

diff --git a/lib/jetty/org/eclipse/jetty/http/DateParser.java b/lib/jetty/org/eclipse/jetty/http/DateParser.java
new file mode 100644 (file)
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+++ b/lib/jetty/org/eclipse/jetty/http/DateParser.java
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+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 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.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.TimeZone;
+
+/**
+ * ThreadLocal data parsers for HTTP style dates
+ *
+ */
+class DateParser
+{
+    private static final TimeZone __GMT = TimeZone.getTimeZone("GMT");
+    static
+    {
+        __GMT.setID("GMT");
+    }
+    
+    final static String __dateReceiveFmt[] =
+    {
+        "EEE, dd MMM yyyy HH:mm:ss zzz",
+        "EEE, dd-MMM-yy HH:mm:ss",
+        "EEE MMM dd HH:mm:ss yyyy",
+
+        "EEE, dd MMM yyyy HH:mm:ss", "EEE dd MMM yyyy HH:mm:ss zzz",
+        "EEE dd MMM yyyy HH:mm:ss", "EEE MMM dd yyyy HH:mm:ss zzz", "EEE MMM dd yyyy HH:mm:ss",
+        "EEE MMM-dd-yyyy HH:mm:ss zzz", "EEE MMM-dd-yyyy HH:mm:ss", "dd MMM yyyy HH:mm:ss zzz",
+        "dd MMM yyyy HH:mm:ss", "dd-MMM-yy HH:mm:ss zzz", "dd-MMM-yy HH:mm:ss", "MMM dd HH:mm:ss yyyy zzz",
+        "MMM dd HH:mm:ss yyyy", "EEE MMM dd HH:mm:ss yyyy zzz",
+        "EEE, MMM dd HH:mm:ss yyyy zzz", "EEE, MMM dd HH:mm:ss yyyy", "EEE, dd-MMM-yy HH:mm:ss zzz",
+        "EEE dd-MMM-yy HH:mm:ss zzz", "EEE dd-MMM-yy HH:mm:ss",
+    };
+
+    public static long parseDate(String date)
+    {
+        return __dateParser.get().parse(date);
+    }
+
+    private static final ThreadLocal<DateParser> __dateParser =new ThreadLocal<DateParser>()
+    {
+        @Override
+        protected DateParser initialValue()
+        {
+            return new DateParser();
+        }
+    };
+    
+    final SimpleDateFormat _dateReceive[]= new SimpleDateFormat[__dateReceiveFmt.length];
+
+    private long parse(final String dateVal)
+    {
+        for (int i = 0; i < _dateReceive.length; i++)
+        {
+            if (_dateReceive[i] == null)
+            {
+                _dateReceive[i] = new SimpleDateFormat(__dateReceiveFmt[i], Locale.US);
+                _dateReceive[i].setTimeZone(__GMT);
+            }
+
+            try
+            {
+                Date date = (Date) _dateReceive[i].parseObject(dateVal);
+                return date.getTime();
+            }
+            catch (java.lang.Exception e)
+            {
+                // LOG.ignore(e);
+            }
+        }
+
+        if (dateVal.endsWith(" GMT"))
+        {
+            final String val = dateVal.substring(0, dateVal.length() - 4);
+
+            for (SimpleDateFormat element : _dateReceive)
+            {
+                try
+                {
+                    Date date = (Date) element.parseObject(val);
+                    return date.getTime();
+                }
+                catch (java.lang.Exception e)
+                {
+                    // LOG.ignore(e);
+                }
+            }
+        }
+        return -1;
+    }
+}