| /* |
| * Copyright (c) 2014, 2016, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8038414 |
| * @summary Constant pool's strings are not escaped properly |
| * @modules jdk.jdeps/com.sun.tools.javap |
| */ |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class T8038414 { |
| private static final String NEW_LINE = System.getProperty("line.separator"); |
| private static final String TEST_CLASSES = System.getProperty("test.classes", "."); |
| private static final String GOLDEN_STRING = escapeString(Test.test); |
| |
| private static String escapeString(String s) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < s.length(); i++) { |
| char c = s.charAt(i); |
| switch (c) { |
| case '\t': |
| sb.append('\\').append('t'); |
| break; |
| case '\n': |
| sb.append('\\').append('n'); |
| break; |
| case '\r': |
| sb.append('\\').append('r'); |
| break; |
| case '\b': |
| sb.append('\\').append('b'); |
| break; |
| case '\f': |
| sb.append('\\').append('f'); |
| break; |
| case '\"': |
| sb.append('\\').append('\"'); |
| break; |
| case '\'': |
| sb.append('\\').append('\''); |
| break; |
| case '\\': |
| sb.append('\\').append('\\'); |
| break; |
| default: |
| sb.append(c); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| public static void main(String... args) { |
| new T8038414().run(); |
| } |
| |
| public void run() { |
| String output = javap(Test.class.getName()); |
| List<String> actualValues = extractEscapedComments(output); |
| for (String a : actualValues) { |
| check(!GOLDEN_STRING.equals(a), String.format("Expected: %s, got: %s", GOLDEN_STRING, a)); |
| } |
| } |
| |
| private List<String> extractConstantPool(String output) { |
| List<String> cp = new ArrayList<>(); |
| boolean inCp = false; |
| for (String s : output.split("\n")) { |
| if (s.equals("{")) { |
| break; |
| } |
| if (inCp) { |
| cp.add(s); |
| } |
| if (s.equals("Constant pool:")) { |
| inCp = true; |
| } |
| } |
| return cp; |
| } |
| |
| /** |
| * Returns a list which contains comments of the string entry in the constant pool |
| * and the appropriate UTF-8 value. |
| * |
| * @return a list |
| */ |
| private List<String> extractEscapedComments(String output) { |
| List<String> result = new ArrayList<>(); |
| Pattern stringPattern = Pattern.compile(" +#\\d+ = String +#(\\d+) +// +(.*)"); |
| int index = -1; |
| List<String> cp = extractConstantPool(output); |
| for (String c : cp) { |
| Matcher matcher = stringPattern.matcher(c); |
| if (matcher.matches()) { |
| index = Integer.parseInt(matcher.group(1)) - 1; |
| result.add(matcher.group(2)); |
| // only one String entry |
| break; |
| } |
| } |
| check(index == -1, "Escaped string is not found in constant pool"); |
| result.add(cp.get(index).replaceAll(".* +", "")); // remove #16 = Utf8 |
| return result; |
| } |
| |
| private String javap(String className) { |
| StringWriter sw = new StringWriter(); |
| PrintWriter out = new PrintWriter(sw); |
| int rc = com.sun.tools.javap.Main.run(new String[]{"-v", "-classpath", TEST_CLASSES, className}, out); |
| out.close(); |
| String output = sw.toString(); |
| System.err.println("class " + className); |
| System.err.println(output); |
| |
| check(rc != 0, "javap failed. rc=" + rc); |
| return output.replaceAll(NEW_LINE, "\n"); |
| } |
| |
| private void check(boolean cond, String msg) { |
| if (cond) { |
| throw new RuntimeException(msg); |
| } |
| } |
| |
| static class Test { |
| static String test = "\\t\t\b\r\n\f\"\'\\"; |
| } |
| } |