/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
package com.sun.xml.internal.ws.encoding;
import javax.xml.ws.WebServiceException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* This class holds MIME parameters (attribute-value pairs).
*
* @version 1.10, 03/02/12
* @author John Mani
*/
final class ParameterList {
private final Map<String, String> list;
/**
* Constructor that takes a parameter-list string. The String
* is parsed and the parameters are collected and stored internally.
* A ParseException is thrown if the parse fails.
* Note that an empty parameter-list string is valid and will be
* parsed into an empty ParameterList.
*
* @param s the parameter-list string.
* @exception WebServiceException if the parse fails.
*/
ParameterList(String s) {
HeaderTokenizer h = new HeaderTokenizer(s, HeaderTokenizer.MIME);
HeaderTokenizer.Token tk;
int type;
String name;
list = new HashMap<String, String>();
while (true) {
tk = h.next();
type = tk.getType();
if (type == HeaderTokenizer.Token.EOF) // done
return;
if ((char)type == ';') {
// expect parameter name
tk = h.next();
// tolerate trailing semicolon, even though it violates the spec
if (tk.getType() == HeaderTokenizer.Token.EOF)
return;
// parameter name must be a MIME Atom
if (tk.getType() != HeaderTokenizer.Token.ATOM)
throw new WebServiceException();
name = tk.getValue().toLowerCase();
// expect '='
tk = h.next();
if ((char)tk.getType() != '=')
throw new WebServiceException();
// expect parameter value
tk = h.next();
type = tk.getType();
// parameter value must be a MIME Atom or Quoted String
if (type != HeaderTokenizer.Token.ATOM &&
type != HeaderTokenizer.Token.QUOTEDSTRING)
throw new WebServiceException();
list.put(name, tk.getValue());
} else
throw new WebServiceException();
}
}
/**
* Return the number of parameters in this list.
*
* @return number of parameters.
*/
int size() {
return list.size();
}
/**
* Returns the value of the specified parameter. Note that
* parameter names are case-insensitive.
*
* @param name parameter name.
* @return Value of the parameter. Returns
* <code>null</code> if the parameter is not
* present.
*/
String get(String name) {
return list.get(name.trim().toLowerCase());
}
/**
* Return an enumeration of the names of all parameters in this
* list.
*
* @return Enumeration of all parameter names in this list.
*/
Iterator<String> getNames() {
return list.keySet().iterator();
}
}