/android/export-contacts

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  • Committer: Tim Marston
  • Date: 2014-03-01 18:04:10 UTC
  • Revision ID: tim@ed.am-20140301180410-mikoe8mzi83ja5qa
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src/am/ed/exportcontacts/VcardExporter.java
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/*
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 * Exporter.java
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 *
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 * Copyright (C) 2011 to 2012 Tim Marston <tim@ed.am>
 
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 * Copyright (C) 2011 to 2013 Tim Marston <tim@ed.am>
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 *
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 * This file is part of the Export Contacts program (hereafter referred
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 * to as "this program"). For more information, see
 
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 * to as "this program").  For more information, see
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 * http://ed.am/dev/android/export-contacts
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 *
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 * This program is free software: you can redistribute it and/or modify
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public class VcardExporter extends Exporter
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{
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        protected FileOutputStream _ostream = null;
 
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        protected boolean _first_contact = true;
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        public VcardExporter( Doit doit )
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        {
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                return buffer.toString();
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        }
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        /**
 
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         * Is the provided value a valid date-and-or-time, as per the spec?
 
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         *
 
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         * @param value the value
 
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         * @return true if it is
 
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         */
 
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        protected boolean isValidDateAndOrTime( String value )
 
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        {
 
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                // ISO 8601:2004 4.1.2 date with 4.1.2.3 a) and b) reduced accuracy
 
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                String date =
 
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                        "[0-9]{4}(?:-?[0-9]{2}(?:-?[0-9]{2})?)?";
 
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                // ISO 8601:2000 5.2.1.3 d), e) and f) truncated date representation
 
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                String date_trunc =
 
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                        "--(?:[0-9]{2}(?:-?[0-9]{2})?|-[0-9]{2})";
 
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                // ISO 8601:2004 4.2.2 time with 4.2.2.3 reduced accuracy, 4.2.4 UTC and
 
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                // 4.2.5 zone offset, no 4.2.2.4 decimal fraction and no 4.2.3 24:00
 
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                // midnight
 
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                String time =
 
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                        "(?:[0-1][0-9]|2[0-3])(?::?[0-5][0-9](?::?(?:60|[0-5][0-9]))?)?" +
 
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                        "(?:Z|[-+](?:[0-1][0-9]|2[0-3])(?::?[0-5][0-9])?)?";
 
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                // ISO 8601:2000 5.3.1.4 a), b) and c) truncated time representation
 
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                String time_trunc =
 
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                        "-(?:[0-5][0-9](?::?(?:60|[0-5][0-9]))?|-(?:60|[0-5][0-9]))";
 
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                // RFC6350 (vCard 3.0) date-and-or-time with mandatory time designator
 
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                String date_and_or_time =
 
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                        "(?:" + date + "|" + date_trunc + ")?" +
 
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                        "(?:T(?:" + time + "|" + time_trunc + "))?";
 
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                return value.matches( date_and_or_time );
 
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        }
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        @Override
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        protected boolean exportContact( ContactData contact )
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                if( contact.getPrimaryIdentifier() == null )
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                        return false;
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                // append newline
 
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                if( _first_contact )
 
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                        _first_contact = false;
 
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                else
 
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                        out.append( "\n" );
 
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                // append header
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                out.append( "BEGIN:VCARD\n" );
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                out.append( "VERSION:3.0\n" );
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                        for( int a = 0; a < notes.size(); a++ )
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                                out.append( fold( "NOTE:" + escape( notes.get( a ) ) ) + "\n" );
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                // append birthday
 
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                String birthday = contact.getBirthday();
 
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                if( birthday != null ) {
 
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                        birthday.trim();
 
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                        if( isValidDateAndOrTime( birthday ) )
 
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                                out.append( fold( "BDAY:" + escape( birthday ) ) + "\n" );
 
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                        else
 
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                                out.append(
 
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                                        fold( "BDAY;VALUE=text:" + escape( birthday ) ) + "\n" );
 
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                }
 
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                // append footer
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                out.append( "END:VCARD\n" );
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