1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.io.BufferedWriter; 25 import java.io.IOException; 26 import java.nio.file.Files; 27 import java.nio.file.Path; 28 import java.util.Arrays; 29 import java.util.regex.Matcher; 30 import java.util.regex.Pattern; 31 import java.util.stream.Stream; 32 33 import static org.testng.Assert.assertTrue; 34 35 public class ExplodedModuleBuilder { 36 private static String MODULE_INFO_JAVA = "module-info.java"; 37 private static Pattern MODULE_PATTERN = 38 Pattern.compile("module\\s+((?:\\w+\\.)*)"); 39 private static Pattern PACKAGE_PATTERN = 40 Pattern.compile("package\\s+(((?:\\w+\\.)*)(?:\\w+))"); 41 private static Pattern CLASS_PATTERN = 42 Pattern.compile("(?:public\\s+)?(?:class|enum|interface)\\s+(\\w+)"); 43 44 final Path dir; 45 ExplodedModuleBuilder(Path dir) { 46 this.dir = dir; 47 } 48 49 void writeJavaFiles(String module, String moduleInfoJava, String... contents) 50 throws IOException 51 { 52 Path msrc = dir.resolve(module); 53 new JavaSource(moduleInfoJava).write(msrc); 54 for (String c : contents) { 55 new JavaSource(c).write(msrc); 56 } 57 } 58 59 void compile(String module, Path dest, String... options) throws IOException { 60 Path msrc = dir.resolve(module); 61 Stream<String> args = 62 Stream.concat(Arrays.stream(options), 63 Stream.of("--module-source-path", 64 dir.toString())); 65 assertTrue(CompilerUtils.compile(msrc, dest, args.toArray(String[]::new)), 66 "Fail to compile " + module); 67 } 68 69 static class JavaSource { 70 final String source; 71 JavaSource(String source) { 72 this.source = source; 73 } 74 75 /** 76 * Writes the source code to a file in a specified directory. 77 * @param dir the directory 78 * @throws IOException if there is a problem writing the file 79 */ 80 public void write(Path dir) throws IOException { 81 Path file = dir.resolve(getJavaFileNameFromSource(source)); 82 Files.createDirectories(file.getParent()); 83 try (BufferedWriter out = Files.newBufferedWriter(file)) { 84 out.write(source.replace("\n", System.lineSeparator())); 85 } 86 } 87 88 /** 89 * Extracts the Java file name from the class declaration. 90 * This method is intended for simple files and uses regular expressions, 91 * so comments matching the pattern can make the method fail. 92 */ 93 static String getJavaFileNameFromSource(String source) { 94 String packageName = null; 95 96 Matcher matcher = MODULE_PATTERN.matcher(source); 97 if (matcher.find()) 98 return MODULE_INFO_JAVA; 99 100 matcher = PACKAGE_PATTERN.matcher(source); 101 if (matcher.find()) 102 packageName = matcher.group(1).replace(".", "/"); 103 104 matcher = CLASS_PATTERN.matcher(source); 105 if (matcher.find()) { 106 String className = matcher.group(1) + ".java"; 107 return (packageName == null) ? className : packageName + "/" + className; 108 } else if (packageName != null) { 109 return packageName + "/package-info.java"; 110 } else { 111 throw new Error("Could not extract the java class " + 112 "name from the provided source"); 113 } 114 } 115 } 116 }