Coverage Report - org.apache.commons.io.FileSystemUtils
 
Classes in this File Line Coverage Branch Coverage Complexity
FileSystemUtils
88%
129/145
92%
64/69
5,385
 
 1  
 /*
 2  
  * Licensed to the Apache Software Foundation (ASF) under one or more
 3  
  * contributor license agreements.  See the NOTICE file distributed with
 4  
  * this work for additional information regarding copyright ownership.
 5  
  * The ASF licenses this file to You under the Apache License, Version 2.0
 6  
  * (the "License"); you may not use this file except in compliance with
 7  
  * the License.  You may obtain a copy of the License at
 8  
  *
 9  
  *      http://www.apache.org/licenses/LICENSE-2.0
 10  
  *
 11  
  * Unless required by applicable law or agreed to in writing, software
 12  
  * distributed under the License is distributed on an "AS IS" BASIS,
 13  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14  
  * See the License for the specific language governing permissions and
 15  
  * limitations under the License.
 16  
  */
 17  
 package org.apache.commons.io;
 18  
 
 19  
 import java.io.BufferedReader;
 20  
 import java.io.File;
 21  
 import java.io.IOException;
 22  
 import java.io.InputStream;
 23  
 import java.io.InputStreamReader;
 24  
 import java.io.OutputStream;
 25  
 import java.nio.charset.Charset;
 26  
 import java.util.ArrayList;
 27  
 import java.util.Arrays;
 28  
 import java.util.List;
 29  
 import java.util.Locale;
 30  
 import java.util.StringTokenizer;
 31  
 
 32  
 /**
 33  
  * General File System utilities.
 34  
  * <p>
 35  
  * This class provides static utility methods for general file system
 36  
  * functions not provided via the JDK {@link java.io.File File} class.
 37  
  * <p>
 38  
  * The current functions provided are:
 39  
  * <ul>
 40  
  * <li>Get the free space on a drive
 41  
  * </ul>
 42  
  *
 43  
  * @since 1.1
 44  
  */
 45  
 public class FileSystemUtils {
 46  
 
 47  
     /** Singleton instance, used mainly for testing. */
 48  2
     private static final FileSystemUtils INSTANCE = new FileSystemUtils();
 49  
 
 50  
     /** Operating system state flag for error. */
 51  
     private static final int INIT_PROBLEM = -1;
 52  
     /** Operating system state flag for neither Unix nor Windows. */
 53  
     private static final int OTHER = 0;
 54  
     /** Operating system state flag for Windows. */
 55  
     private static final int WINDOWS = 1;
 56  
     /** Operating system state flag for Unix. */
 57  
     private static final int UNIX = 2;
 58  
     /** Operating system state flag for Posix flavour Unix. */
 59  
     private static final int POSIX_UNIX = 3;
 60  
 
 61  
     /** The operating system flag. */
 62  
     private static final int OS;
 63  
 
 64  
     /** The path to df */
 65  
     private static final String DF;
 66  
 
 67  
     static {
 68  2
         int os = OTHER;
 69  2
         String dfPath = "df";
 70  
         try {
 71  2
             String osName = System.getProperty("os.name");
 72  2
             if (osName == null) {
 73  0
                 throw new IOException("os.name not found");
 74  
             }
 75  2
             osName = osName.toLowerCase(Locale.ENGLISH);
 76  
             // match
 77  2
             if (osName.contains("windows")) {
 78  0
                 os = WINDOWS;
 79  2
             } else if (osName.contains("linux") ||
 80  
                     osName.contains("mpe/ix") ||
 81  
                     osName.contains("freebsd") ||
 82  
                     osName.contains("openbsd") ||
 83  
                     osName.contains("irix") ||
 84  
                     osName.contains("digital unix") ||
 85  
                     osName.contains("unix") ||
 86  
                     osName.contains("mac os x")) {
 87  2
                 os = UNIX;
 88  0
             } else if (osName.contains("sun os") ||
 89  
                     osName.contains("sunos") ||
 90  
                     osName.contains("solaris")) {
 91  0
                 os = POSIX_UNIX;
 92  0
                 dfPath = "/usr/xpg4/bin/df";
 93  0
             } else if (osName.contains("hp-ux") ||
 94  
                     osName.contains("aix")) {
 95  0
                 os = POSIX_UNIX;
 96  
             } else {
 97  0
                 os = OTHER;
 98  
             }
 99  
 
 100  0
         } catch (final Exception ex) {
 101  0
             os = INIT_PROBLEM;
 102  2
         }
 103  2
         OS = os;
 104  2
         DF = dfPath;
 105  2
     }
 106  
 
 107  
     /**
 108  
      * Instances should NOT be constructed in standard programming.
 109  
      */
 110  
     public FileSystemUtils() {
 111  56
         super();
 112  56
     }
 113  
 
 114  
     //-----------------------------------------------------------------------
 115  
     /**
 116  
      * Returns the free space on a drive or volume by invoking
 117  
      * the command line.
 118  
      * This method does not normalize the result, and typically returns
 119  
      * bytes on Windows, 512 byte units on OS X and kilobytes on Unix.
 120  
      * As this is not very useful, this method is deprecated in favour
 121  
      * of {@link #freeSpaceKb(String)} which returns a result in kilobytes.
 122  
      * <p>
 123  
      * Note that some OS's are NOT currently supported, including OS/390,
 124  
      * OpenVMS.
 125  
      * <pre>
 126  
      * FileSystemUtils.freeSpace("C:");       // Windows
 127  
      * FileSystemUtils.freeSpace("/volume");  // *nix
 128  
      * </pre>
 129  
      * The free space is calculated via the command line.
 130  
      * It uses 'dir /-c' on Windows and 'df' on *nix.
 131  
      *
 132  
      * @param path  the path to get free space for, not null, not empty on Unix
 133  
      * @return the amount of free drive space on the drive or volume
 134  
      * @throws IllegalArgumentException if the path is invalid
 135  
      * @throws IllegalStateException if an error occurred in initialisation
 136  
      * @throws IOException if an error occurs when finding the free space
 137  
      * @since 1.1, enhanced OS support in 1.2 and 1.3
 138  
      * @deprecated Use freeSpaceKb(String)
 139  
      *  Deprecated from 1.3, may be removed in 2.0
 140  
      */
 141  
     @Deprecated
 142  
     public static long freeSpace(final String path) throws IOException {
 143  2
         return INSTANCE.freeSpaceOS(path, OS, false, -1);
 144  
     }
 145  
 
 146  
     //-----------------------------------------------------------------------
 147  
     /**
 148  
      * Returns the free space on a drive or volume in kilobytes by invoking
 149  
      * the command line.
 150  
      * <pre>
 151  
      * FileSystemUtils.freeSpaceKb("C:");       // Windows
 152  
      * FileSystemUtils.freeSpaceKb("/volume");  // *nix
 153  
      * </pre>
 154  
      * The free space is calculated via the command line.
 155  
      * It uses 'dir /-c' on Windows, 'df -kP' on AIX/HP-UX and 'df -k' on other Unix.
 156  
      * <p>
 157  
      * In order to work, you must be running Windows, or have a implementation of
 158  
      * Unix df that supports GNU format when passed -k (or -kP). If you are going
 159  
      * to rely on this code, please check that it works on your OS by running
 160  
      * some simple tests to compare the command line with the output from this class.
 161  
      * If your operating system isn't supported, please raise a JIRA call detailing
 162  
      * the exact result from df -k and as much other detail as possible, thanks.
 163  
      *
 164  
      * @param path  the path to get free space for, not null, not empty on Unix
 165  
      * @return the amount of free drive space on the drive or volume in kilobytes
 166  
      * @throws IllegalArgumentException if the path is invalid
 167  
      * @throws IllegalStateException if an error occurred in initialisation
 168  
      * @throws IOException if an error occurs when finding the free space
 169  
      * @since 1.2, enhanced OS support in 1.3
 170  
      * @deprecated As of 2.6 removed without replacement. Please use {@link java.nio.file.FileStore#getUsableSpace()}.
 171  
      */
 172  
     @Deprecated
 173  
     public static long freeSpaceKb(final String path) throws IOException {
 174  2
         return freeSpaceKb(path, -1);
 175  
     }
 176  
     /**
 177  
      * Returns the free space on a drive or volume in kilobytes by invoking
 178  
      * the command line.
 179  
      * <pre>
 180  
      * FileSystemUtils.freeSpaceKb("C:");       // Windows
 181  
      * FileSystemUtils.freeSpaceKb("/volume");  // *nix
 182  
      * </pre>
 183  
      * The free space is calculated via the command line.
 184  
      * It uses 'dir /-c' on Windows, 'df -kP' on AIX/HP-UX and 'df -k' on other Unix.
 185  
      * <p>
 186  
      * In order to work, you must be running Windows, or have a implementation of
 187  
      * Unix df that supports GNU format when passed -k (or -kP). If you are going
 188  
      * to rely on this code, please check that it works on your OS by running
 189  
      * some simple tests to compare the command line with the output from this class.
 190  
      * If your operating system isn't supported, please raise a JIRA call detailing
 191  
      * the exact result from df -k and as much other detail as possible, thanks.
 192  
      *
 193  
      * @param path  the path to get free space for, not null, not empty on Unix
 194  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 195  
      *  is zero or less
 196  
      * @return the amount of free drive space on the drive or volume in kilobytes
 197  
      * @throws IllegalArgumentException if the path is invalid
 198  
      * @throws IllegalStateException if an error occurred in initialisation
 199  
      * @throws IOException if an error occurs when finding the free space
 200  
      * @since 2.0
 201  
      * @deprecated As of 2.6 removed without replacement. Please use {@link java.nio.file.FileStore#getUsableSpace()}.
 202  
      */
 203  
     @Deprecated
 204  
     public static long freeSpaceKb(final String path, final long timeout) throws IOException {
 205  2
         return INSTANCE.freeSpaceOS(path, OS, true, timeout);
 206  
     }
 207  
 
 208  
     /**
 209  
      * Returns the disk size of the volume which holds the working directory.
 210  
      * <p>
 211  
      * Identical to:
 212  
      * <pre>
 213  
      * freeSpaceKb(new File(".").getAbsolutePath())
 214  
      * </pre>
 215  
      * @return the amount of free drive space on the drive or volume in kilobytes
 216  
      * @throws IllegalStateException if an error occurred in initialisation
 217  
      * @throws IOException if an error occurs when finding the free space
 218  
      * @since 2.0
 219  
      * @deprecated As of 2.6 removed without replacement. Please use {@link java.nio.file.FileStore#getUsableSpace()}.
 220  
      */
 221  
     @Deprecated
 222  
     public static long freeSpaceKb() throws IOException {
 223  0
         return freeSpaceKb(-1);
 224  
     }
 225  
 
 226  
     /**
 227  
      * Returns the disk size of the volume which holds the working directory.
 228  
      * <p>
 229  
      * Identical to:
 230  
      * <pre>
 231  
      * freeSpaceKb(new File(".").getAbsolutePath())
 232  
      * </pre>
 233  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 234  
      *  is zero or less
 235  
      * @return the amount of free drive space on the drive or volume in kilobytes
 236  
      * @throws IllegalStateException if an error occurred in initialisation
 237  
      * @throws IOException if an error occurs when finding the free space
 238  
      * @since 2.0
 239  
      * @deprecated As of 2.6 removed without replacement. Please use {@link java.nio.file.FileStore#getUsableSpace()}.
 240  
      */
 241  
     @Deprecated
 242  
     public static long freeSpaceKb(final long timeout) throws IOException {
 243  0
         return freeSpaceKb(new File(".").getAbsolutePath(), timeout);
 244  
     }
 245  
 
 246  
     //-----------------------------------------------------------------------
 247  
     /**
 248  
      * Returns the free space on a drive or volume in a cross-platform manner.
 249  
      * Note that some OS's are NOT currently supported, including OS/390.
 250  
      * <pre>
 251  
      * FileSystemUtils.freeSpace("C:");  // Windows
 252  
      * FileSystemUtils.freeSpace("/volume");  // *nix
 253  
      * </pre>
 254  
      * The free space is calculated via the command line.
 255  
      * It uses 'dir /-c' on Windows and 'df' on *nix.
 256  
      *
 257  
      * @param path  the path to get free space for, not null, not empty on Unix
 258  
      * @param os  the operating system code
 259  
      * @param kb  whether to normalize to kilobytes
 260  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 261  
      *  is zero or less
 262  
      * @return the amount of free drive space on the drive or volume
 263  
      * @throws IllegalArgumentException if the path is invalid
 264  
      * @throws IllegalStateException if an error occurred in initialisation
 265  
      * @throws IOException if an error occurs when finding the free space
 266  
      */
 267  
     long freeSpaceOS(final String path, final int os, final boolean kb, final long timeout) throws IOException {
 268  24
         if (path == null) {
 269  4
             throw new IllegalArgumentException("Path must not be null");
 270  
         }
 271  20
         switch (os) {
 272  
             case WINDOWS:
 273  4
                 return kb ? freeSpaceWindows(path, timeout) / FileUtils.ONE_KB : freeSpaceWindows(path, timeout);
 274  
             case UNIX:
 275  8
                 return freeSpaceUnix(path, kb, false, timeout);
 276  
             case POSIX_UNIX:
 277  0
                 return freeSpaceUnix(path, kb, true, timeout);
 278  
             case OTHER:
 279  4
                 throw new IllegalStateException("Unsupported operating system");
 280  
             default:
 281  4
                 throw new IllegalStateException(
 282  
                   "Exception caught when determining operating system");
 283  
         }
 284  
     }
 285  
 
 286  
     //-----------------------------------------------------------------------
 287  
     /**
 288  
      * Find free space on the Windows platform using the 'dir' command.
 289  
      *
 290  
      * @param path  the path to get free space for, including the colon
 291  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 292  
      *  is zero or less
 293  
      * @return the amount of free drive space on the drive
 294  
      * @throws IOException if an error occurs
 295  
      */
 296  
     long freeSpaceWindows(String path, final long timeout) throws IOException {
 297  18
         path = FilenameUtils.normalize(path, false);
 298  18
         if (path.length() > 0 && path.charAt(0) != '"') {
 299  12
             path = "\"" + path + "\"";
 300  
         }
 301  
 
 302  
         // build and run the 'dir' command
 303  18
         final String[] cmdAttribs = new String[] {"cmd.exe", "/C", "dir /a /-c " + path};
 304  
 
 305  
         // read in the output of the command to an ArrayList
 306  18
         final List<String> lines = performCommand(cmdAttribs, Integer.MAX_VALUE, timeout);
 307  
 
 308  
         // now iterate over the lines we just read and find the LAST
 309  
         // non-empty line (the free space bytes should be in the last element
 310  
         // of the ArrayList anyway, but this will ensure it works even if it's
 311  
         // not, still assuming it is on the last non-blank line)
 312  18
         for (int i = lines.size() - 1; i >= 0; i--) {
 313  16
             final String line = lines.get(i);
 314  16
             if (line.length() > 0) {
 315  12
                 return parseDir(line, path);
 316  
             }
 317  
         }
 318  
         // all lines are blank
 319  2
         throw new IOException(
 320  
                 "Command line 'dir /-c' did not return any info " +
 321  
                 "for path '" + path + "'");
 322  
     }
 323  
 
 324  
     /**
 325  
      * Parses the Windows dir response last line
 326  
      *
 327  
      * @param line  the line to parse
 328  
      * @param path  the path that was sent
 329  
      * @return the number of bytes
 330  
      * @throws IOException if an error occurs
 331  
      */
 332  
     long parseDir(final String line, final String path) throws IOException {
 333  
         // read from the end of the line to find the last numeric
 334  
         // character on the line, then continue until we find the first
 335  
         // non-numeric character, and everything between that and the last
 336  
         // numeric character inclusive is our free space bytes count
 337  12
         int bytesStart = 0;
 338  12
         int bytesEnd = 0;
 339  12
         int j = line.length() - 1;
 340  156
         innerLoop1: while (j >= 0) {
 341  154
             final char c = line.charAt(j);
 342  154
             if (Character.isDigit(c)) {
 343  
               // found the last numeric character, this is the end of
 344  
               // the free space bytes count
 345  10
               bytesEnd = j + 1;
 346  10
               break innerLoop1;
 347  
             }
 348  144
             j--;
 349  144
         }
 350  128
         innerLoop2: while (j >= 0) {
 351  126
             final char c = line.charAt(j);
 352  126
             if (!Character.isDigit(c) && c != ',' && c != '.') {
 353  
               // found the next non-numeric character, this is the
 354  
               // beginning of the free space bytes count
 355  10
               bytesStart = j + 1;
 356  10
               break innerLoop2;
 357  
             }
 358  116
             j--;
 359  116
         }
 360  12
         if (j < 0) {
 361  2
             throw new IOException(
 362  
                     "Command line 'dir /-c' did not return valid info " +
 363  
                     "for path '" + path + "'");
 364  
         }
 365  
 
 366  
         // remove commas and dots in the bytes count
 367  10
         final StringBuilder buf = new StringBuilder(line.substring(bytesStart, bytesEnd));
 368  126
         for (int k = 0; k < buf.length(); k++) {
 369  116
             if (buf.charAt(k) == ',' || buf.charAt(k) == '.') {
 370  6
                 buf.deleteCharAt(k--);
 371  
             }
 372  
         }
 373  10
         return parseBytes(buf.toString(), path);
 374  
     }
 375  
 
 376  
     //-----------------------------------------------------------------------
 377  
     /**
 378  
      * Find free space on the *nix platform using the 'df' command.
 379  
      *
 380  
      * @param path  the path to get free space for
 381  
      * @param kb  whether to normalize to kilobytes
 382  
      * @param posix  whether to use the POSIX standard format flag
 383  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 384  
      *  is zero or less
 385  
      * @return the amount of free drive space on the volume
 386  
      * @throws IOException if an error occurs
 387  
      */
 388  
     long freeSpaceUnix(final String path, final boolean kb, final boolean posix, final long timeout)
 389  
             throws IOException {
 390  66
         if (path.isEmpty()) {
 391  8
             throw new IllegalArgumentException("Path must not be empty");
 392  
         }
 393  
 
 394  
         // build and run the 'dir' command
 395  58
         String flags = "-";
 396  58
         if (kb) {
 397  30
             flags += "k";
 398  
         }
 399  58
         if (posix) {
 400  20
             flags += "P";
 401  
         }
 402  58
         final String[] cmdAttribs =
 403  
             flags.length() > 1 ? new String[] {DF, flags, path} : new String[] {DF, path};
 404  
 
 405  
         // perform the command, asking for up to 3 lines (header, interesting, overflow)
 406  58
         final List<String> lines = performCommand(cmdAttribs, 3, timeout);
 407  50
         if (lines.size() < 2) {
 408  
             // unknown problem, throw exception
 409  0
             throw new IOException(
 410  
                     "Command line '" + DF + "' did not return info as expected " +
 411  
                     "for path '" + path + "'- response was " + lines);
 412  
         }
 413  50
         final String line2 = lines.get(1); // the line we're interested in
 414  
 
 415  
         // Now, we tokenize the string. The fourth element is what we want.
 416  50
         StringTokenizer tok = new StringTokenizer(line2, " ");
 417  50
         if (tok.countTokens() < 4) {
 418  
             // could be long Filesystem, thus data on third line
 419  20
             if (tok.countTokens() == 1 && lines.size() >= 3) {
 420  4
                 final String line3 = lines.get(2); // the line may be interested in
 421  4
                 tok = new StringTokenizer(line3, " ");
 422  4
             } else {
 423  16
                 throw new IOException(
 424  
                         "Command line '" + DF + "' did not return data as expected " +
 425  
                         "for path '" + path + "'- check path is valid");
 426  
             }
 427  
         } else {
 428  30
             tok.nextToken(); // Ignore Filesystem
 429  
         }
 430  34
         tok.nextToken(); // Ignore 1K-blocks
 431  34
         tok.nextToken(); // Ignore Used
 432  34
         final String freeSpace = tok.nextToken();
 433  34
         return parseBytes(freeSpace, path);
 434  
     }
 435  
 
 436  
     //-----------------------------------------------------------------------
 437  
     /**
 438  
      * Parses the bytes from a string.
 439  
      *
 440  
      * @param freeSpace  the free space string
 441  
      * @param path  the path
 442  
      * @return the number of bytes
 443  
      * @throws IOException if an error occurs
 444  
      */
 445  
     long parseBytes(final String freeSpace, final String path) throws IOException {
 446  
         try {
 447  44
             final long bytes = Long.parseLong(freeSpace);
 448  36
             if (bytes < 0) {
 449  8
                 throw new IOException(
 450  
                         "Command line '" + DF + "' did not find free space in response " +
 451  
                         "for path '" + path + "'- check path is valid");
 452  
             }
 453  28
             return bytes;
 454  
 
 455  8
         } catch (final NumberFormatException ex) {
 456  8
             throw new IOException(
 457  
                     "Command line '" + DF + "' did not return numeric data as expected " +
 458  
                     "for path '" + path + "'- check path is valid", ex);
 459  
         }
 460  
     }
 461  
 
 462  
     //-----------------------------------------------------------------------
 463  
     /**
 464  
      * Performs the os command.
 465  
      *
 466  
      * @param cmdAttribs  the command line parameters
 467  
      * @param max The maximum limit for the lines returned
 468  
      * @param timeout The timeout amount in milliseconds or no timeout if the value
 469  
      *  is zero or less
 470  
      * @return the lines returned by the command, converted to lower-case
 471  
      * @throws IOException if an error occurs
 472  
      */
 473  
     List<String> performCommand(final String[] cmdAttribs, final int max, final long timeout) throws IOException {
 474  
         // this method does what it can to avoid the 'Too many open files' error
 475  
         // based on trial and error and these links:
 476  
         // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4784692
 477  
         // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4801027
 478  
         // http://forum.java.sun.com/thread.jspa?threadID=533029&messageID=2572018
 479  
         // however, its still not perfect as the JDK support is so poor
 480  
         // (see commons-exec or Ant for a better multi-threaded multi-os solution)
 481  
 
 482  76
         final List<String> lines = new ArrayList<>(20);
 483  76
         Process proc = null;
 484  76
         InputStream in = null;
 485  76
         OutputStream out = null;
 486  76
         InputStream err = null;
 487  76
         BufferedReader inr = null;
 488  
         try {
 489  
 
 490  76
             final Thread monitor = ThreadMonitor.start(timeout);
 491  
 
 492  76
             proc = openProcess(cmdAttribs);
 493  76
             in = proc.getInputStream();
 494  76
             out = proc.getOutputStream();
 495  76
             err = proc.getErrorStream();
 496  
             // default charset is most likely appropriate here
 497  76
             inr = new BufferedReader(new InputStreamReader(in, Charset.defaultCharset()));
 498  76
             String line = inr.readLine();
 499  304
             while (line != null && lines.size() < max) {
 500  228
                 line = line.toLowerCase(Locale.ENGLISH).trim();
 501  228
                 lines.add(line);
 502  228
                 line = inr.readLine();
 503  
             }
 504  
 
 505  76
             proc.waitFor();
 506  
 
 507  76
             ThreadMonitor.stop(monitor);
 508  
 
 509  76
             if (proc.exitValue() != 0) {
 510  
                 // os command problem, throw exception
 511  2
                 throw new IOException(
 512  
                         "Command line returned OS error code '" + proc.exitValue() +
 513  
                         "' for command " + Arrays.asList(cmdAttribs));
 514  
             }
 515  74
             if (lines.isEmpty()) {
 516  
                 // unknown problem, throw exception
 517  10
                 throw new IOException(
 518  
                         "Command line did not return any info " +
 519  
                         "for command " + Arrays.asList(cmdAttribs));
 520  
             }
 521  
 
 522  64
             inr.close();
 523  64
             inr = null;
 524  
 
 525  64
             in.close();
 526  64
             in = null;
 527  
 
 528  64
             if (out != null) {
 529  4
                 out.close();
 530  4
                 out = null;
 531  
             }
 532  
 
 533  64
             if (err != null) {
 534  4
                 err.close();
 535  4
                 err = null;
 536  
             }
 537  
 
 538  64
             return lines;
 539  
 
 540  0
         } catch (final InterruptedException ex) {
 541  0
             throw new IOException(
 542  
                     "Command line threw an InterruptedException " +
 543  
                     "for command " + Arrays.asList(cmdAttribs) + " timeout=" + timeout, ex);
 544  
         } finally {
 545  76
             IOUtils.closeQuietly(in);
 546  76
             IOUtils.closeQuietly(out);
 547  76
             IOUtils.closeQuietly(err);
 548  76
             IOUtils.closeQuietly(inr);
 549  76
             if (proc != null) {
 550  76
                 proc.destroy();
 551  
             }
 552  
         }
 553  
     }
 554  
 
 555  
     /**
 556  
      * Opens the process to the operating system.
 557  
      *
 558  
      * @param cmdAttribs  the command line parameters
 559  
      * @return the process
 560  
      * @throws IOException if an error occurs
 561  
      */
 562  
     Process openProcess(final String[] cmdAttribs) throws IOException {
 563  4
         return Runtime.getRuntime().exec(cmdAttribs);
 564  
     }
 565  
 
 566  
 }