mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/HttpDateGenerator.java

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/HttpDateGenerator.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,73 @@
     1.4 +/*
     1.5 + * ====================================================================
     1.6 + * Licensed to the Apache Software Foundation (ASF) under one
     1.7 + * or more contributor license agreements.  See the NOTICE file
     1.8 + * distributed with this work for additional information
     1.9 + * regarding copyright ownership.  The ASF licenses this file
    1.10 + * to you under the Apache License, Version 2.0 (the
    1.11 + * "License"); you may not use this file except in compliance
    1.12 + * with the License.  You may obtain a copy of the License at
    1.13 + *
    1.14 + *   http://www.apache.org/licenses/LICENSE-2.0
    1.15 + *
    1.16 + * Unless required by applicable law or agreed to in writing,
    1.17 + * software distributed under the License is distributed on an
    1.18 + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    1.19 + * KIND, either express or implied.  See the License for the
    1.20 + * specific language governing permissions and limitations
    1.21 + * under the License.
    1.22 + * ====================================================================
    1.23 + *
    1.24 + * This software consists of voluntary contributions made by many
    1.25 + * individuals on behalf of the Apache Software Foundation.  For more
    1.26 + * information on the Apache Software Foundation, please see
    1.27 + * <http://www.apache.org/>.
    1.28 + *
    1.29 + */
    1.30 +
    1.31 +package ch.boye.httpclientandroidlib.protocol;
    1.32 +
    1.33 +import java.text.DateFormat;
    1.34 +import java.text.SimpleDateFormat;
    1.35 +import java.util.Date;
    1.36 +import java.util.Locale;
    1.37 +import java.util.TimeZone;
    1.38 +
    1.39 +
    1.40 +/**
    1.41 + * Generates a date in the format required by the HTTP protocol.
    1.42 + *
    1.43 + * @since 4.0
    1.44 + */
    1.45 +public class HttpDateGenerator {
    1.46 +
    1.47 +    /** Date format pattern used to generate the header in RFC 1123 format. */
    1.48 +    public static final
    1.49 +        String PATTERN_RFC1123 = "EEE, dd MMM yyyy HH:mm:ss zzz";
    1.50 +
    1.51 +    /** The time zone to use in the date header. */
    1.52 +    public static final TimeZone GMT = TimeZone.getTimeZone("GMT");
    1.53 +
    1.54 +
    1.55 +    private final DateFormat dateformat;
    1.56 +
    1.57 +    private long dateAsLong = 0L;
    1.58 +    private String dateAsText = null;
    1.59 +
    1.60 +    public HttpDateGenerator() {
    1.61 +        super();
    1.62 +        this.dateformat = new SimpleDateFormat(PATTERN_RFC1123, Locale.US);
    1.63 +        this.dateformat.setTimeZone(GMT);
    1.64 +    }
    1.65 +
    1.66 +    public synchronized String getCurrentDate() {
    1.67 +        long now = System.currentTimeMillis();
    1.68 +        if (now - this.dateAsLong > 1000) {
    1.69 +            // Generate new date string
    1.70 +            this.dateAsText = this.dateformat.format(new Date(now));
    1.71 +            this.dateAsLong = now;
    1.72 +        }
    1.73 +        return this.dateAsText;
    1.74 +    }
    1.75 +
    1.76 +}

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