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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.bluetooth.client.pbap.utils;
     18 
     19 import java.util.Calendar;
     20 import java.util.Date;
     21 import java.util.Locale;
     22 import java.util.TimeZone;
     23 import java.util.regex.Matcher;
     24 import java.util.regex.Pattern;
     25 
     26 public final class ObexTime {
     27 
     28     private Date mDate;
     29 
     30     public ObexTime(String time) {
     31         /*
     32          * match OBEX time string: YYYYMMDDTHHMMSS with optional UTF offset
     33          * +/-hhmm
     34          */
     35         Pattern p = Pattern
     36                 .compile("(\\d{4})(\\d{2})(\\d{2})T(\\d{2})(\\d{2})(\\d{2})(([+-])(\\d{2})(\\d{2}))?");
     37         Matcher m = p.matcher(time);
     38 
     39         if (m.matches()) {
     40 
     41             /*
     42              * matched groups are numberes as follows: YYYY MM DD T HH MM SS +
     43              * hh mm ^^^^ ^^ ^^ ^^ ^^ ^^ ^ ^^ ^^ 1 2 3 4 5 6 8 9 10 all groups
     44              * are guaranteed to be numeric so conversion will always succeed
     45              * (except group 8 which is either + or -)
     46              */
     47 
     48             Calendar cal = Calendar.getInstance();
     49             cal.set(Integer.parseInt(m.group(1)), Integer.parseInt(m.group(2)) - 1,
     50                     Integer.parseInt(m.group(3)), Integer.parseInt(m.group(4)),
     51                     Integer.parseInt(m.group(5)), Integer.parseInt(m.group(6)));
     52 
     53             /*
     54              * if 7th group is matched then we have UTC offset information
     55              * included
     56              */
     57             if (m.group(7) != null) {
     58                 int ohh = Integer.parseInt(m.group(9));
     59                 int omm = Integer.parseInt(m.group(10));
     60 
     61                 /* time zone offset is specified in miliseconds */
     62                 int offset = (ohh * 60 + omm) * 60 * 1000;
     63 
     64                 if (m.group(8).equals("-")) {
     65                     offset = -offset;
     66                 }
     67 
     68                 TimeZone tz = TimeZone.getTimeZone("UTC");
     69                 tz.setRawOffset(offset);
     70 
     71                 cal.setTimeZone(tz);
     72             }
     73 
     74             mDate = cal.getTime();
     75         }
     76     }
     77 
     78     public ObexTime(Date date) {
     79         mDate = date;
     80     }
     81 
     82     public Date getTime() {
     83         return mDate;
     84     }
     85 
     86     @Override
     87     public String toString() {
     88         if (mDate == null) {
     89             return null;
     90         }
     91 
     92         Calendar cal = Calendar.getInstance();
     93         cal.setTime(mDate);
     94 
     95         /* note that months are numbered stating from 0 */
     96         return String.format(Locale.US, "%04d%02d%02dT%02d%02d%02d",
     97                 cal.get(Calendar.YEAR), cal.get(Calendar.MONTH) + 1,
     98                 cal.get(Calendar.DATE), cal.get(Calendar.HOUR_OF_DAY),
     99                 cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND));
    100     }
    101 }
    102