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 /* 27 * AcceptLanguageParser.java 28 * 29 * Created on June 10, 2002, 3:31 PM 30 */ 31 32 package gov.nist.javax.sip.parser; 33 import gov.nist.core.*; 34 import gov.nist.javax.sip.header.*; 35 import javax.sip.*; 36 import java.text.ParseException; 37 38 39 /** 40 * Parser for Accept Language Headers. 41 * 42 * Accept Language body. 43 * <pre> 44 * 45 * Accept-Language = "Accept-Language" ":" 46 * 1#( language-range [ ";" "q" "=" qvalue ] ) 47 * language-range = ( ( 1*8ALPHA *( "-" 1*8ALPHA ) ) | "*" ) 48 * 49 * HTTP RFC 2616 Section 14.4 50 * </pre> 51 * 52 * Accept-Language: da, en-gb;q=0.8, en;q=0.7 53 * 54 * @see AcceptLanguageList 55 * @version 1.2 $Revision: 1.8 $ $Date: 2009/07/17 18:57:56 $ 56 * 57 * @author Olivier Deruelle 58 * 59 */ 60 public class AcceptLanguageParser extends HeaderParser { 61 62 /** 63 * Constructor 64 * @param acceptLanguage AcceptLanguage message to parse 65 */ AcceptLanguageParser(String acceptLanguage)66 public AcceptLanguageParser(String acceptLanguage) { 67 super(acceptLanguage); 68 } 69 70 /** 71 * Constructor 72 * @param lexer Lexer to set 73 */ AcceptLanguageParser(Lexer lexer)74 protected AcceptLanguageParser(Lexer lexer) { 75 super(lexer); 76 } 77 78 /** 79 * parse the String message 80 * @return SIPHeader (AcceptLanguage object) 81 * @throws ParseException if the message does not respect the spec. 82 */ parse()83 public SIPHeader parse() throws ParseException { 84 AcceptLanguageList acceptLanguageList = new AcceptLanguageList(); 85 if (debug) 86 dbg_enter("AcceptLanguageParser.parse"); 87 88 try { 89 headerName(TokenTypes.ACCEPT_LANGUAGE); 90 91 while (lexer.lookAhead(0) != '\n') { 92 AcceptLanguage acceptLanguage = new AcceptLanguage(); 93 acceptLanguage.setHeaderName(SIPHeaderNames.ACCEPT_LANGUAGE); 94 if (lexer.lookAhead(0) != ';') { 95 // Content-Coding: 96 lexer.match(TokenTypes.ID); 97 Token value = lexer.getNextToken(); 98 acceptLanguage.setLanguageRange(value.getTokenValue()); 99 } 100 101 while (lexer.lookAhead(0) == ';') { 102 this.lexer.match(';'); 103 this.lexer.SPorHT(); 104 this.lexer.match('q'); 105 this.lexer.SPorHT(); 106 this.lexer.match('='); 107 this.lexer.SPorHT(); 108 lexer.match(TokenTypes.ID); 109 Token value = lexer.getNextToken(); 110 try { 111 float fl = Float.parseFloat(value.getTokenValue()); 112 acceptLanguage.setQValue(fl); 113 } catch (NumberFormatException ex) { 114 throw createParseException(ex.getMessage()); 115 } catch (InvalidArgumentException ex) { 116 throw createParseException(ex.getMessage()); 117 } 118 this.lexer.SPorHT(); 119 } 120 121 acceptLanguageList.add(acceptLanguage); 122 if (lexer.lookAhead(0) == ',') { 123 this.lexer.match(','); 124 this.lexer.SPorHT(); 125 } else 126 this.lexer.SPorHT(); 127 128 } 129 } finally { 130 if (debug) 131 dbg_leave("AcceptLanguageParser.parse"); 132 } 133 134 return acceptLanguageList; 135 } 136 } 137 /* 138 * $Log: AcceptLanguageParser.java,v $ 139 * Revision 1.8 2009/07/17 18:57:56 emcho 140 * Converts indentation tabs to spaces so that we have a uniform indentation policy in the whole project. 141 * 142 * Revision 1.7 2006/07/13 09:02:11 mranga 143 * Issue number: 144 * Obtained from: 145 * Submitted by: jeroen van bemmel 146 * Reviewed by: mranga 147 * Moved some changes from jain-sip-1.2 to java.net 148 * 149 * CVS: ---------------------------------------------------------------------- 150 * CVS: Issue number: 151 * CVS: If this change addresses one or more issues, 152 * CVS: then enter the issue number(s) here. 153 * CVS: Obtained from: 154 * CVS: If this change has been taken from another system, 155 * CVS: then name the system in this line, otherwise delete it. 156 * CVS: Submitted by: 157 * CVS: If this code has been contributed to the project by someone else; i.e., 158 * CVS: they sent us a patch or a set of diffs, then include their name/email 159 * CVS: address here. If this is your work then delete this line. 160 * CVS: Reviewed by: 161 * CVS: If we are doing pre-commit code reviews and someone else has 162 * CVS: reviewed your changes, include their name(s) here. 163 * CVS: If you have not had it reviewed then delete this line. 164 * 165 * Revision 1.3 2006/06/19 06:47:27 mranga 166 * javadoc fixups 167 * 168 * Revision 1.2 2006/06/16 15:26:28 mranga 169 * Added NIST disclaimer to all public domain files. Clean up some javadoc. Fixed a leak 170 * 171 * Revision 1.1.1.1 2005/10/04 17:12:35 mranga 172 * 173 * Import 174 * 175 * 176 * Revision 1.5 2004/07/28 14:13:54 mranga 177 * Submitted by: mranga 178 * 179 * Move out the test code to a separate test/unit class. 180 * Fixed some encode methods. 181 * 182 * Revision 1.4 2004/01/22 13:26:31 sverker 183 * Issue number: 184 * Obtained from: 185 * Submitted by: sverker 186 * Reviewed by: mranga 187 * 188 * Major reformat of code to conform with style guide. Resolved compiler and javadoc warnings. Added CVS tags. 189 * 190 * CVS: ---------------------------------------------------------------------- 191 * CVS: Issue number: 192 * CVS: If this change addresses one or more issues, 193 * CVS: then enter the issue number(s) here. 194 * CVS: Obtained from: 195 * CVS: If this change has been taken from another system, 196 * CVS: then name the system in this line, otherwise delete it. 197 * CVS: Submitted by: 198 * CVS: If this code has been contributed to the project by someone else; i.e., 199 * CVS: they sent us a patch or a set of diffs, then include their name/email 200 * CVS: address here. If this is your work then delete this line. 201 * CVS: Reviewed by: 202 * CVS: If we are doing pre-commit code reviews and someone else has 203 * CVS: reviewed your changes, include their name(s) here. 204 * CVS: If you have not had it reviewed then delete this line. 205 * 206 */ 207