| /* |
| * Copyright (c) 2018, 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.api.settings; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.StringJoiner; |
| |
| import jdk.jfr.Description; |
| import jdk.jfr.Label; |
| import jdk.jfr.MetadataDefinition; |
| import jdk.jfr.SettingControl; |
| |
| @Label("String List") |
| @Description("Accepts set of strings, such as \"text\" or \"text1\", \"text2\", or nothing to reject all strings") |
| @MetadataDefinition |
| public final class StringListSetting extends SettingControl { |
| |
| private Set<String> acceptedStrings = new HashSet<>(); |
| |
| @Override |
| public void setValue(String s) { |
| acceptedStrings = parseSetting(s); |
| } |
| |
| private Set<String> parseSetting(String s) { |
| Set<String> stringSet = new HashSet<>(); |
| StringBuilder sb = new StringBuilder(); |
| boolean inString = false; |
| for (int index = 0; index < s.length(); index++) { |
| char c = s.charAt(index); |
| if (c != '"') { |
| if (inString) { |
| // escape double quotes |
| if (c == '\\' && index + 1 < s.length()) { |
| if (s.charAt(index + 1) == '"') { |
| index++; |
| c = '"'; |
| } |
| } |
| sb.append(c); |
| } |
| } else { |
| if (inString) { |
| stringSet.add(sb.toString()); |
| sb.setLength(0); |
| } |
| inString = !inString; |
| } |
| } |
| return stringSet; |
| } |
| |
| @Override |
| public String getValue() { |
| StringJoiner sj = new StringJoiner(", ", "\"", "\""); |
| for (String s : acceptedStrings) { |
| sj.add(s); |
| } |
| return sj.toString(); |
| } |
| |
| @Override |
| public String combine(Set<String> values) { |
| Set<String> nameSet = new HashSet<>(); |
| for (String s : values) { |
| nameSet.addAll(parseSetting(s)); |
| } |
| if (nameSet.isEmpty()) { |
| return ""; |
| } |
| StringJoiner sj = new StringJoiner(", "); |
| for (String s : nameSet) { |
| s = s.replace("\"", "\\\""); // escape quotes |
| sj.add("\"" + s + "\""); |
| } |
| return sj.toString(); |
| } |
| |
| public boolean accept(String string) { |
| return acceptedStrings.contains(string); |
| } |
| } |