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Diffstat (limited to 'java/gov/nist/javax/sip/parser/AcceptEncodingParser.java')
| -rw-r--r-- | java/gov/nist/javax/sip/parser/AcceptEncodingParser.java | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/java/gov/nist/javax/sip/parser/AcceptEncodingParser.java b/java/gov/nist/javax/sip/parser/AcceptEncodingParser.java new file mode 100644 index 0000000..c85de3c --- /dev/null +++ b/java/gov/nist/javax/sip/parser/AcceptEncodingParser.java @@ -0,0 +1,205 @@ +/* +* 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 +* +* . +* +*/ +package gov.nist.javax.sip.parser; +import gov.nist.javax.sip.header.*; +import gov.nist.core.*; +import java.text.ParseException; +import javax.sip.*; + +/** + * Accept-Encoding SIP (HTTP) Header parser. + * + * @version 1.2 $Revision: 1.7 $ $Date: 2009/07/17 18:57:56 $ + * + * @author Olivier Deruelle + * @author M. Ranganathan + * + * + * <pre> + * + * The Accept-Encoding request-header field is similar to Accept, but + * restricts the content-codings (section 3.5) that are acceptable in + * the response. + * + * + * Accept-Encoding = "Accept-Encoding" ":" + * ( encoding *( "," encoding) ) + * encoding = ( codings *[ ";" "q" "=" qvalue ] ) + * codings = ( content-coding | "*" ) + * + * Examples of its use are: + * + * Accept-Encoding: compress, gzip + * Accept-Encoding: + * Accept-Encoding: * + * Accept-Encoding: compress;q=0.5, gzip;q=1.0 + * Accept-Encoding: gzip;q=1.0, identity; q=0.5, *;q=0 + * </pre> + * + */ +public class AcceptEncodingParser extends HeaderParser { + + /** + * Constructor + * @param acceptEncoding message to parse + */ + public AcceptEncodingParser(String acceptEncoding) { + super(acceptEncoding); + } + + /** + * Constructor + * @param lexer Lexer to set + */ + protected AcceptEncodingParser(Lexer lexer) { + super(lexer); + } + + /** + * parse the String message + * @return SIPHeader (AcceptEncoding object) + * @throws ParseException if the message does not respect the spec. + */ + public SIPHeader parse() throws ParseException { + AcceptEncodingList acceptEncodingList = new AcceptEncodingList(); + if (debug) + dbg_enter("AcceptEncodingParser.parse"); + + try { + headerName(TokenTypes.ACCEPT_ENCODING); + // empty body is fine for this header. + if (lexer.lookAhead(0) == '\n') { + AcceptEncoding acceptEncoding = new AcceptEncoding(); + acceptEncodingList.add(acceptEncoding); + } else { + while (lexer.lookAhead(0) != '\n') { + AcceptEncoding acceptEncoding = new AcceptEncoding(); + if (lexer.lookAhead(0) != ';') { + // Content-Coding: + lexer.match(TokenTypes.ID); + Token value = lexer.getNextToken(); + acceptEncoding.setEncoding(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 qv = Float.parseFloat(value.getTokenValue()); + acceptEncoding.setQValue(qv); + } catch (NumberFormatException ex) { + throw createParseException(ex.getMessage()); + } catch (InvalidArgumentException ex) { + throw createParseException(ex.getMessage()); + } + this.lexer.SPorHT(); + } + + acceptEncodingList.add(acceptEncoding); + if (lexer.lookAhead(0) == ',') { + this.lexer.match(','); + this.lexer.SPorHT(); + } + + } + } + return acceptEncodingList; + } finally { + if (debug) + dbg_leave("AcceptEncodingParser.parse"); + } + } +} +/* + * $Log: AcceptEncodingParser.java,v $ + * Revision 1.7 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 1.6 2006/07/13 09:02:03 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 1.4 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. + * + */ |