1/* 2 * Copyright (c) 2012, 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/* 25 * This utils class is been used by test T8003512 which is compiled with Java 6 26 * only features. So if this class is modified, it should be so using Java 6 27 * features only. 28 */ 29 30import java.io.BufferedInputStream; 31import java.io.BufferedOutputStream; 32import java.io.Closeable; 33import java.io.File; 34import java.io.FileInputStream; 35import java.io.FileOutputStream; 36import java.io.IOException; 37import java.io.InputStream; 38import java.io.OutputStream; 39import java.io.PrintStream; 40 41public class Utils { 42 43 static final sun.tools.jar.Main jarTool = 44 new sun.tools.jar.Main(System.out, System.err, "jar-tool"); 45 46 static final com.sun.tools.javac.Main javac = 47 new com.sun.tools.javac.Main(); 48 49 private Utils(){} 50 51 public static boolean compile(String... args) { 52 return javac.compile(args) == 0; 53 } 54 55 public static void createClassFile(File javaFile, File superClass, 56 boolean delete) throws IOException { 57 createJavaFile(javaFile, superClass); 58 if (!compile(javaFile.getName())) { 59 throw new RuntimeException("compile failed unexpectedly"); 60 } 61 if (delete) javaFile.delete(); 62 } 63 64 public static void createJavaFile(File outFile) throws IOException { 65 createJavaFile(outFile, null); 66 } 67 68 public static void createJavaFile(File outFile, File superClass) throws IOException { 69 PrintStream ps = null; 70 String srcStr = "public class " + getSimpleName(outFile) + " "; 71 if (superClass != null) { 72 srcStr = srcStr.concat("extends " + getSimpleName(superClass) + " "); 73 } 74 srcStr = srcStr.concat("{}"); 75 try { 76 FileOutputStream fos = new FileOutputStream(outFile); 77 ps = new PrintStream(fos); 78 ps.println(srcStr); 79 } finally { 80 close(ps); 81 } 82 } 83 84 static String getClassFileName(File javaFile) { 85 return javaFile.getName().endsWith(".java") 86 ? javaFile.getName().replace(".java", ".class") 87 : null; 88 } 89 90 static String getSimpleName(File inFile) { 91 String fname = inFile.getName(); 92 return fname.substring(0, fname.indexOf(".")); 93 } 94 95 public static void copyStream(InputStream in, OutputStream out) throws IOException { 96 byte[] buf = new byte[8192]; 97 int n = in.read(buf); 98 while (n > 0) { 99 out.write(buf, 0, n); 100 n = in.read(buf); 101 } 102 } 103 104 public static void close(Closeable c) { 105 if (c != null) { 106 try { 107 c.close(); 108 } catch (IOException ignore) {} 109 } 110 } 111 112 public static void deleteFile(File f) { 113 if (!f.delete()) { 114 throw new RuntimeException("could not delete file: " + f.getAbsolutePath()); 115 } 116 } 117 118 public static void cat(File output, File... files) throws IOException { 119 BufferedInputStream bis = null; 120 BufferedOutputStream bos = null; 121 FileOutputStream fos = null; 122 try { 123 fos = new FileOutputStream(output); 124 bos = new BufferedOutputStream(fos); 125 for (File x : files) { 126 FileInputStream fis = new FileInputStream(x); 127 bis = new BufferedInputStream(fis); 128 copyStream(bis, bos); 129 Utils.close(bis); 130 } 131 } finally { 132 Utils.close(bis); 133 Utils.close(bos); 134 Utils.close(fos); 135 } 136 } 137} 138