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1 package goodjava.io;
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2
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3 import java.io.File;
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4 import java.io.InputStream;
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5 import java.io.OutputStream;
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6 import java.io.IOException;
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7 import java.nio.file.Files;
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8
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9
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10 public final class IoUtils {
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11 private IoUtils() {} // never
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12
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13 public static void move( File from, File to ) throws IOException {
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14 Files.move( from.toPath(), to.toPath() );
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15 }
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16
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17 public static void delete(File file) throws IOException {
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18 Files.deleteIfExists( file.toPath() );
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19 }
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20
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21 public static boolean isSymbolicLink(File file) {
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22 return Files.isSymbolicLink(file.toPath());
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23 }
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24
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25 public static void deleteRecursively(File file) throws IOException {
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26 if( file.isDirectory() && !isSymbolicLink(file) ) {
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27 for( File f : file.listFiles() ) {
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28 deleteRecursively(f);
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29 }
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30 }
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31 delete(file);
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32 }
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33
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34 public static void link(File from,File to) throws IOException {
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35 Files.createLink( to.toPath(), from.toPath() );
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36 }
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37
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38 public static long copyAll(InputStream in,OutputStream out)
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39 throws IOException
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40 {
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41 long total = 0;
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42 byte[] a = new byte[8192];
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43 int n;
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44 while( (n=in.read(a)) != -1 ) {
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45 out.write(a,0,n);
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46 total += n;
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47 }
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48 return total;
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49 }
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50
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51 } |
