com.sun.xml.ws.encoding.ParameterList Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.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 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();
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
* null 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 getNames() {
return list.keySet().iterator();
}
}