1 /* 2 * Copyright (c) 2013, 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 package sun.hotspot.tools.ctw; 25 26 27 import java.io.IOException; 28 import java.nio.file.FileVisitOption; 29 import java.nio.file.Files; 30 import java.nio.file.Path; 31 import java.util.stream.Stream; 32 33 /** 34 * Handler for dirs containing classes to compile. 35 */ 36 public class ClassPathDirEntry extends PathHandler.PathEntry { 37 private final int rootLength; 38 39 public ClassPathDirEntry(Path root) { 40 super(root); 41 if (!Files.exists(root)) { 42 throw new Error(root + " dir does not exist"); 43 } 44 rootLength = root.toString() 45 .length(); 46 } 47 48 @Override 49 protected Stream<String> classes() { 50 try { 51 return Files.walk(root, Integer.MAX_VALUE, FileVisitOption.FOLLOW_LINKS) 52 .filter(p -> Utils.isClassFile(p.toString())) 53 .map(this::pathToClassName); 54 } catch (IOException e) { 55 throw new Error("can not traverse " + root + " : " + e.getMessage(), e); 56 } 57 } 58 59 @Override 60 protected String description() { 61 return "# dir: " + root; 62 } 63 64 @Override 65 protected byte[] findByteCode(String classname) { 66 Path path = root; 67 for (String c : Utils.classNameToFileName(classname).split("/")) { 68 path = path.resolve(c); 69 } 70 if (!path.toFile() 71 .exists()) { 72 return null; 73 } 74 try { 75 return Files.readAllBytes(path); 76 } catch (IOException e) { 77 e.printStackTrace(CompileTheWorld.ERR); 78 return null; 79 } 80 } 81 82 private String pathToClassName(Path file) { 83 String fileString; 84 if (root == file) { 85 fileString = file.normalize() 86 .toString(); 87 } else { 88 fileString = file.normalize() 89 .toString() 90 .substring(rootLength + 1); 91 } 92 return Utils.fileNameToClassName(fileString); 93 } 94 } 95