1 /* 2 * Copyright (c) 2012, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.oracle.tools.packager; 27 28 import com.oracle.tools.packager.Log; 29 import java.io.*; 30 import java.net.URL; 31 import java.nio.channels.FileChannel; 32 import java.util.Arrays; 33 34 public class IOUtils { 35 36 public static boolean deleteRecursive(File path) throws FileNotFoundException { 37 boolean ret = true; 38 if (!path.exists()) { //nothing to do 39 return true; 40 } 41 if (path.isDirectory()) { 42 File[] children = path.listFiles(); 43 if (children != null) { 44 for (File f : children) { 45 ret = ret && deleteRecursive(f); 46 } 47 } 48 } 49 return ret && path.delete(); 50 } 51 52 public static void copyFromURL(URL location, File file) throws IOException { 53 copyFromURL(location, file, false); 54 } 55 56 public static void copyFromURL(URL location, File file, boolean append) throws IOException { 57 if (location == null) { 58 throw new IOException("Missing input resource!"); 59 } 60 if (file.exists() && !append) { 61 file.delete(); 62 } 63 InputStream in = location.openStream(); 64 FileOutputStream out = new FileOutputStream(file, append); 65 byte[] buffer = new byte[1024]; 66 int len; 67 while ((len = in.read(buffer)) != -1) { 68 out.write(buffer, 0, len); 69 } 70 out.close(); 71 in.close(); 72 file.setReadOnly(); 73 file.setReadable(true, false); 74 } 75 76 public static void copyFile(File sourceFile, File destFile) 77 throws IOException { 78 destFile.getParentFile().mkdirs(); 79 80 //recreate the file as existing copy may have weird permissions 81 destFile.delete(); 82 destFile.createNewFile(); 83 84 FileChannel source = null; 85 FileChannel destination = null; 86 source = new FileInputStream(sourceFile).getChannel(); 87 destination = new FileOutputStream(destFile).getChannel(); 88 if (destination != null && source != null) { 89 destination.transferFrom(source, 0, source.size()); 90 } 91 if (source != null) { 92 source.close(); 93 } 94 if (destination != null) { 95 destination.close(); 96 } 97 98 //preserve executable bit! 99 if (sourceFile.canExecute()) { 100 destFile.setExecutable(true, false); 101 } 102 if (!sourceFile.canWrite()) { 103 destFile.setReadOnly(); 104 } 105 destFile.setReadable(true, false); 106 } 107 108 public static long getFolderSize(File folder) { 109 long foldersize = 0; 110 111 File[] children = folder.listFiles(); 112 if (children != null) { 113 for (File f : children) { 114 if (f.isDirectory()) { 115 foldersize += getFolderSize(f); 116 } else { 117 foldersize += f.length(); 118 } 119 } 120 } 121 122 return foldersize; 123 } 124 125 //run "launcher paramfile" in the directory where paramfile is kept 126 public static void run(String launcher, File paramFile, boolean verbose) 127 throws IOException { 128 if (paramFile != null && paramFile.exists()) { 129 ProcessBuilder pb = new ProcessBuilder(launcher, paramFile.getName()); 130 pb = pb.directory(paramFile.getParentFile()); 131 exec(pb, verbose); 132 } 133 } 134 135 public static void exec(ProcessBuilder pb, boolean verbose) throws IOException { 136 exec(pb, verbose, false); 137 } 138 139 140 public static void exec(ProcessBuilder pb, boolean verbose, 141 boolean testForPresenseOnly) throws IOException { 142 exec(pb, verbose, testForPresenseOnly, null); 143 } 144 145 public static void exec(ProcessBuilder pb, boolean verbose, 146 boolean testForPresenseOnly, PrintStream consumer) throws IOException { 147 pb.redirectErrorStream(true); 148 Log.verbose("Running " + Arrays.toString(pb.command().toArray(new String[0])) 149 + (pb.directory() != null ? (" in " + pb.directory()) : "")); 150 Process p = pb.start(); 151 InputStreamReader isr = new InputStreamReader(p.getInputStream()); 152 BufferedReader br = new BufferedReader(isr); 153 String lineRead; 154 while ((lineRead = br.readLine()) != null) { 155 if (consumer != null) { 156 consumer.print(lineRead); 157 } else if (verbose) { 158 Log.info(lineRead); 159 } else { 160 Log.debug(lineRead); 161 } 162 } 163 try { 164 int ret = p.waitFor(); 165 if (ret != 0 && !(testForPresenseOnly && ret != 127)) { 166 throw new IOException("Exec failed with code " + ret + 167 " command [" + Arrays.toString(pb.command().toArray(new String[0])) + 168 " in " + (pb.directory() != null ? 169 pb.directory().getAbsolutePath() : "unspecified directory")); 170 } 171 } catch (InterruptedException ex) { 172 } 173 } 174 175 //no good test if we are running pre-JRE7 176 //use heuristic approach 177 // "false positive" is better than wrong answer 178 public static boolean isNotSymbolicLink(File file) { 179 //no symlinks on windows 180 if (Platform.getPlatform() == Platform.WINDOWS) { 181 return true; 182 } 183 try { 184 if (file == null || file.getParent() == null) { 185 return false; 186 } 187 File file_canonical = new File( 188 file.getParentFile().getCanonicalFile(), file.getName()); 189 if (file_canonical.getCanonicalFile().equals( 190 file_canonical.getAbsoluteFile())) { 191 return true; 192 } 193 } catch (IOException ioe) {} 194 return false; 195 } 196 197 public static byte[] readFully(File f) throws IOException { 198 InputStream inp = new FileInputStream(f); 199 //read fully into memory 200 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 201 byte[] buffer = new byte[1024]; 202 int length = 0; 203 while ((length = inp.read(buffer)) != -1) { 204 baos.write(buffer, 0, length); 205 } 206 baos.close(); 207 return baos.toByteArray(); 208 } 209 }