001package votorola.g.text; // Copyright 2009, Michael Allan.  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE.
002
003import votorola.g.lang.*;
004
005
006/** SimpleDateFormat utilities.
007  */
008public @ThreadSafe final class SimpleDateFormatX
009{
010
011    private SimpleDateFormatX() {}
012
013
014
015    /** An ISO 8601 format pattern for local times.
016      *
017      *     @see <a href='http://en.wikipedia.org/wiki/ISO_8601'
018      *                  >http://en.wikipedia.org/wiki/ISO_8601</a>
019      */
020    public static final String ISO_8601_LOCAL_PATTERN = "yyyy-MM-dd'T'HH:mm:ss";
021
022
023
024    /** An ISO 8601 format pattern (wrong).  When parsing a value in timezone Z (GMT), the
025      * input needs to be {@linkplain #simplifiedISO8601(String) dumbed down}.  In a "GMT"
026      * timezone, the output probably needs <a
027      * href='http://www.fileformat.info/tip/java/simpledateformat.htm'>correcting</a>.
028      *
029      * <p>This is wrong because it uses a named timezone.</p>
030      *
031      *     @see <a href='http://en.wikipedia.org/wiki/ISO_8601'
032      *                  >http://en.wikipedia.org/wiki/ISO_8601</a>
033      */
034    public static final String ISO_8601_PATTERN = "yyyy-MM-dd'T'HH:mm:ssz";
035
036
037
038    /** An ISO 8601 format pattern (corrected).
039      *
040      *     @see <a href='http://en.wikipedia.org/wiki/ISO_8601'
041      *                  >http://en.wikipedia.org/wiki/ISO_8601</a>
042      */
043    public static final String ISO_8601_PATTERN_C = "yyyy-MM-dd'T'HH:mm:ssZ";
044
045
046
047    /** Simplifies an ISO 8601 format string, for parsing against {@linkplain
048      * #ISO_8601_PATTERN ISO_8601_PATTERN}.
049      */
050    public static String simplifiedISO8601( String s )
051    {
052        if( s.charAt(19) == 'Z' && s.length() == 20 ) s = s.substring(0,19) + "GMT"; // it cannot parse the Z, so help it out
053
054        return s;
055    }
056
057
058
059}