/* * Conditions Of Use * * This software was developed by employees of the National Institute of * Standards and Technology (NIST), an agency of the Federal Government. * Pursuant to title 15 Untied States Code Section 105, works of NIST * employees are not subject to copyright protection in the United States * and are considered to be in the public domain. As a result, a formal * license is not needed to use the software. * * This software is provided by NIST as a service and is expressly * provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT * AND DATA ACCURACY. NIST does not warrant or make any representations * regarding the use of the software or the results thereof, including but * not limited to the correctness, accuracy, reliability or usefulness of * the software. * * Permission to use this software is contingent upon your acceptance * of the terms of this agreement * * . * */ /* * AcceptLanguageParser.java * * Created on June 10, 2002, 3:31 PM */ package gov.nist.javax.sip.parser; import gov.nist.core.*; import gov.nist.javax.sip.header.*; import javax.sip.*; import java.text.ParseException; /** * Parser for Accept Language Headers. * * Accept Language body. * 
 *
 * Accept-Language = "Accept-Language" ":"
 *                         1#( language-range [ ";" "q" "=" qvalue ] )
 *       language-range  = ( ( 1*8ALPHA *( "-" 1*8ALPHA ) ) | "*" )
 *
 * HTTP RFC 2616 Section 14.4
 *
* * Accept-Language: da, en-gb;q=0.8, en;q=0.7 * * @see AcceptLanguageList * @version 1.2 $Revision: 1.8 $ $Date: 2009/07/17 18:57:56 $ * * @author Olivier Deruelle * */ public class AcceptLanguageParser extends HeaderParser { /** * Constructor * @param acceptLanguage AcceptLanguage message to parse */ public AcceptLanguageParser(String acceptLanguage) { super(acceptLanguage); } /** * Constructor * @param lexer Lexer to set */ protected AcceptLanguageParser(Lexer lexer) { super(lexer); } /** * parse the String message * @return SIPHeader (AcceptLanguage object) * @throws ParseException if the message does not respect the spec. */ public SIPHeader parse() throws ParseException { AcceptLanguageList acceptLanguageList = new AcceptLanguageList(); if (debug) dbg_enter("AcceptLanguageParser.parse"); try { headerName(TokenTypes.ACCEPT_LANGUAGE); while (lexer.lookAhead(0) != '\n') { AcceptLanguage acceptLanguage = new AcceptLanguage(); acceptLanguage.setHeaderName(SIPHeaderNames.ACCEPT_LANGUAGE); if (lexer.lookAhead(0) != ';') { // Content-Coding: lexer.match(TokenTypes.ID); Token value = lexer.getNextToken(); acceptLanguage.setLanguageRange(value.getTokenValue()); } while (lexer.lookAhead(0) == ';') { this.lexer.match(';'); this.lexer.SPorHT(); this.lexer.match('q'); this.lexer.SPorHT(); this.lexer.match('='); this.lexer.SPorHT(); lexer.match(TokenTypes.ID); Token value = lexer.getNextToken(); try { float fl = Float.parseFloat(value.getTokenValue()); acceptLanguage.setQValue(fl); } catch (NumberFormatException ex) { throw createParseException(ex.getMessage()); } catch (InvalidArgumentException ex) { throw createParseException(ex.getMessage()); } this.lexer.SPorHT(); } acceptLanguageList.add(acceptLanguage); if (lexer.lookAhead(0) == ',') { this.lexer.match(','); this.lexer.SPorHT(); } else this.lexer.SPorHT(); } } finally { if (debug) dbg_leave("AcceptLanguageParser.parse"); } return acceptLanguageList; } } /* * $Log: AcceptLanguageParser.java,v $ * Revision 1.8 2009/07/17 18:57:56 emcho * Converts indentation tabs to spaces so that we have a uniform indentation policy in the whole project. * * Revision 1.7 2006/07/13 09:02:11 mranga * Issue number: * Obtained from: * Submitted by: jeroen van bemmel * Reviewed by: mranga * Moved some changes from jain-sip-1.2 to java.net * * CVS: ---------------------------------------------------------------------- * CVS: Issue number: * CVS: If this change addresses one or more issues, * CVS: then enter the issue number(s) here. * CVS: Obtained from: * CVS: If this change has been taken from another system, * CVS: then name the system in this line, otherwise delete it. * CVS: Submitted by: * CVS: If this code has been contributed to the project by someone else; i.e., * CVS: they sent us a patch or a set of diffs, then include their name/email * CVS: address here. If this is your work then delete this line. * CVS: Reviewed by: * CVS: If we are doing pre-commit code reviews and someone else has * CVS: reviewed your changes, include their name(s) here. * CVS: If you have not had it reviewed then delete this line. * * Revision 1.3 2006/06/19 06:47:27 mranga * javadoc fixups * * Revision 1.2 2006/06/16 15:26:28 mranga * Added NIST disclaimer to all public domain files. Clean up some javadoc. Fixed a leak * * Revision 1.1.1.1 2005/10/04 17:12:35 mranga * * Import * * * Revision 1.5 2004/07/28 14:13:54 mranga * Submitted by: mranga * * Move out the test code to a separate test/unit class. * Fixed some encode methods. * * Revision 1.4 2004/01/22 13:26:31 sverker * Issue number: * Obtained from: * Submitted by: sverker * Reviewed by: mranga * * Major reformat of code to conform with style guide. Resolved compiler and javadoc warnings. Added CVS tags. * * CVS: ---------------------------------------------------------------------- * CVS: Issue number: * CVS: If this change addresses one or more issues, * CVS: then enter the issue number(s) here. * CVS: Obtained from: * CVS: If this change has been taken from another system, * CVS: then name the system in this line, otherwise delete it. * CVS: Submitted by: * CVS: If this code has been contributed to the project by someone else; i.e., * CVS: they sent us a patch or a set of diffs, then include their name/email * CVS: address here. If this is your work then delete this line. * CVS: Reviewed by: * CVS: If we are doing pre-commit code reviews and someone else has * CVS: reviewed your changes, include their name(s) here. * CVS: If you have not had it reviewed then delete this line. * */