/*
* 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
*
* .
*
*/
/*******************************************
* PRODUCT OF PT INOVACAO - EST DEPARTMENT *
*******************************************/
package gov.nist.javax.sip.parser.ims;
import gov.nist.core.Token;
import gov.nist.javax.sip.header.SIPHeader;
import gov.nist.javax.sip.header.ims.PVisitedNetworkID;
import gov.nist.javax.sip.header.ims.PVisitedNetworkIDList;
import gov.nist.javax.sip.parser.Lexer;
import gov.nist.javax.sip.parser.ParametersParser;
import gov.nist.javax.sip.parser.TokenTypes;
import java.text.ParseException;
/**
* P-Visited-Network-ID header parser.
*
* <pre>
* P-Visited-Network-ID = "P-Visited-Network-ID" HCOLON
* vnetwork-spec
* *(COMMA vnetwork-spec)
* vnetwork-spec = (token / quoted-string)
* *(SEMI vnetwork-param)
* vnetwork-param = generic-param
* </pre>
*
* @author ALEXANDRE MIGUEL SILVA SANTOS
*/
/*
*/
public class PVisitedNetworkIDParser extends ParametersParser implements TokenTypes {
/**
* Constructor
*/
public PVisitedNetworkIDParser(String networkID) {
super(networkID);
}
protected PVisitedNetworkIDParser(Lexer lexer) {
super(lexer);
}
public SIPHeader parse() throws ParseException {
PVisitedNetworkIDList visitedNetworkIDList = new PVisitedNetworkIDList();
if (debug)
dbg_enter("VisitedNetworkIDParser.parse");
try {
this.lexer.match(TokenTypes.P_VISITED_NETWORK_ID);
this.lexer.SPorHT();
this.lexer.match(':');
this.lexer.SPorHT();
while (true) {
PVisitedNetworkID visitedNetworkID = new PVisitedNetworkID();
if (this.lexer.lookAhead(0) == '\"')
parseQuotedString(visitedNetworkID);
else
parseToken(visitedNetworkID);
visitedNetworkIDList.add(visitedNetworkID);
this.lexer.SPorHT();
char la = lexer.lookAhead(0);
if (la == ',') {
this.lexer.match(',');
this.lexer.SPorHT();
} else if (la == '\n')
break;
else
throw createParseException("unexpected char = " + la);
}
return visitedNetworkIDList;
} finally {
if (debug)
dbg_leave("VisitedNetworkIDParser.parse");
}
}
protected void parseQuotedString(PVisitedNetworkID visitedNetworkID) throws ParseException {
if (debug)
dbg_enter("parseQuotedString");
try {
StringBuilder retval = new StringBuilder();
if (this.lexer.lookAhead(0) != '\"')
throw createParseException("unexpected char");
this.lexer.consume(1);
while (true) {
char next = this.lexer.getNextChar();
if (next == '\"') {
// Got to the terminating quote.
break;
} else if (next == '\0') {
throw new ParseException("unexpected EOL", 1);
} else if (next == '\\') {
retval.append(next);
next = this.lexer.getNextChar();
retval.append(next);
} else {
retval.append(next);
}
}
visitedNetworkID.setVisitedNetworkID(retval.toString());
super.parse(visitedNetworkID);
}finally {
if (debug)
dbg_leave("parseQuotedString.parse");
}
}
protected void parseToken(PVisitedNetworkID visitedNetworkID) throws ParseException
{
// issued by Miguel Freitas
lexer.match(TokenTypes.ID);
Token token = lexer.getNextToken();
//String value = token.getTokenValue();
visitedNetworkID.setVisitedNetworkID(token);
super.parse(visitedNetworkID);
}
}