1 /* 2 * Conditions Of Use 3 * 4 * This software was developed by employees of the National Institute of 5 * Standards and Technology (NIST), an agency of the Federal Government. 6 * Pursuant to title 15 Untied States Code Section 105, works of NIST 7 * employees are not subject to copyright protection in the United States 8 * and are considered to be in the public domain. As a result, a formal 9 * license is not needed to use the software. 10 * 11 * This software is provided by NIST as a service and is expressly 12 * provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED 13 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF 14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT 15 * AND DATA ACCURACY. NIST does not warrant or make any representations 16 * regarding the use of the software or the results thereof, including but 17 * not limited to the correctness, accuracy, reliability or usefulness of 18 * the software. 19 * 20 * Permission to use this software is contingent upon your acceptance 21 * of the terms of this agreement 22 * 23 * . 24 * 25 */ 26 package gov.nist.javax.sip.parser; 27 import gov.nist.javax.sip.header.*; 28 import java.util.*; 29 import java.text.ParseException; 30 31 /** 32 * Parser for SIP Date field. Converts from SIP Date to the 33 * internal storage (Calendar) 34 * 35 * @version 1.2 $Revision: 1.11 $ $Date: 2009/07/17 18:57:59 $ 36 */ 37 public class DateParser extends HeaderParser { 38 39 /** 40 * Constructor 41 * @param date message to parse to set 42 */ DateParser(String date)43 public DateParser(String date) { 44 super(date); 45 } 46 DateParser(Lexer lexer)47 protected DateParser(Lexer lexer) { 48 super(lexer); 49 } 50 51 /** 52 * Parse method. 53 * @throws ParseException 54 * @return the parsed Date header/ 55 */ parse()56 public SIPHeader parse() throws ParseException { 57 if (debug) 58 dbg_enter("DateParser.parse"); 59 try { 60 headerName(TokenTypes.DATE); 61 wkday(); 62 lexer.match(','); 63 lexer.match(' '); 64 Calendar cal = date(); 65 lexer.match(' '); 66 time(cal); 67 lexer.match(' '); 68 String tzone = this.lexer.ttoken().toLowerCase(); 69 if (!"gmt".equals(tzone)) 70 throw createParseException("Bad Time Zone " + tzone); 71 this.lexer.match('\n'); 72 SIPDateHeader retval = new SIPDateHeader(); 73 retval.setDate(cal); 74 return retval; 75 } finally { 76 if (debug) 77 dbg_leave("DateParser.parse"); 78 79 } 80 81 } 82 83 84 } 85