| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tomcat.util.http.parser; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.util.LinkedHashMap; |
| import java.util.Locale; |
| import java.util.Map; |
| |
| public class MediaType { |
| |
| private final String type; |
| private final String subtype; |
| private final LinkedHashMap<String,String> parameters; |
| private final String charset; |
| private volatile String noCharset; |
| private volatile String withCharset; |
| |
| protected MediaType(String type, String subtype, LinkedHashMap<String,String> parameters) { |
| this.type = type; |
| this.subtype = subtype; |
| this.parameters = parameters; |
| |
| String cs = parameters.get("charset"); |
| if (cs != null && cs.length() > 0 && cs.charAt(0) == '"') { |
| cs = HttpParser.unquote(cs); |
| } |
| this.charset = cs; |
| } |
| |
| public String getType() { |
| return type; |
| } |
| |
| public String getSubtype() { |
| return subtype; |
| } |
| |
| public String getCharset() { |
| return charset; |
| } |
| |
| public int getParameterCount() { |
| return parameters.size(); |
| } |
| |
| public String getParameterValue(String parameter) { |
| return parameters.get(parameter.toLowerCase(Locale.ENGLISH)); |
| } |
| |
| @Override |
| public String toString() { |
| if (withCharset == null) { |
| synchronized (this) { |
| if (withCharset == null) { |
| StringBuilder result = new StringBuilder(); |
| result.append(type); |
| result.append('/'); |
| result.append(subtype); |
| for (Map.Entry<String, String> entry : parameters.entrySet()) { |
| String value = entry.getValue(); |
| if (value == null || value.length() == 0) { |
| continue; |
| } |
| result.append(';'); |
| // Workaround for Adobe Read 9 plug-in on IE bug |
| // Can be removed after 26 June 2013 (EOL of Reader 9) |
| // See BZ 53814 |
| result.append(' '); |
| result.append(entry.getKey()); |
| result.append('='); |
| result.append(value); |
| } |
| |
| withCharset = result.toString(); |
| } |
| } |
| } |
| return withCharset; |
| } |
| |
| public String toStringNoCharset() { |
| if (noCharset == null) { |
| synchronized (this) { |
| if (noCharset == null) { |
| StringBuilder result = new StringBuilder(); |
| result.append(type); |
| result.append('/'); |
| result.append(subtype); |
| for (Map.Entry<String, String> entry : parameters.entrySet()) { |
| if (entry.getKey().equalsIgnoreCase("charset")) { |
| continue; |
| } |
| result.append(';'); |
| // Workaround for Adobe Read 9 plug-in on IE bug |
| // Can be removed after 26 June 2013 (EOL of Reader 9) |
| // See BZ 53814 |
| result.append(' '); |
| result.append(entry.getKey()); |
| result.append('='); |
| result.append(entry.getValue()); |
| } |
| |
| noCharset = result.toString(); |
| } |
| } |
| } |
| return noCharset; |
| } |
| |
| /** |
| * Parses a MediaType value, either from a HTTP header or from an application. |
| * |
| * @param input a reader over the header text |
| * @return a MediaType parsed from the input, or null if not valid |
| * @throws IOException if there was a problem reading the input |
| */ |
| public static MediaType parseMediaType(StringReader input) throws IOException { |
| |
| // Type (required) |
| String type = HttpParser.readToken(input); |
| if (type == null || type.length() == 0) { |
| return null; |
| } |
| |
| if (HttpParser.skipConstant(input, "/") == SkipResult.NOT_FOUND) { |
| return null; |
| } |
| |
| // Subtype (required) |
| String subtype = HttpParser.readToken(input); |
| if (subtype == null || subtype.length() == 0) { |
| return null; |
| } |
| |
| LinkedHashMap<String,String> parameters = new LinkedHashMap<>(); |
| |
| SkipResult lookForSemiColon = HttpParser.skipConstant(input, ";"); |
| if (lookForSemiColon == SkipResult.NOT_FOUND) { |
| return null; |
| } |
| while (lookForSemiColon == SkipResult.FOUND) { |
| String attribute = HttpParser.readToken(input); |
| |
| String value = ""; |
| if (HttpParser.skipConstant(input, "=") == SkipResult.FOUND) { |
| value = HttpParser.readTokenOrQuotedString(input, true); |
| } |
| |
| if (attribute != null) { |
| parameters.put(attribute.toLowerCase(Locale.ENGLISH), value); |
| } |
| |
| lookForSemiColon = HttpParser.skipConstant(input, ";"); |
| if (lookForSemiColon == SkipResult.NOT_FOUND) { |
| return null; |
| } |
| } |
| |
| return new MediaType(type, subtype, parameters); |
| } |
| |
| } |