Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/utils/FileUtils.java @ 657:af3f56758f59
merged gnv-artifacts/0.5
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:13:53 +0200 |
| parents | 211cad2fb5ba |
| children | eedad2ddad14 |
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| 590:5f5f273c8566 | 657:af3f56758f59 |
|---|---|
| 1 package de.intevation.gnv.utils; | |
| 2 | |
| 3 import java.io.BufferedInputStream; | |
| 4 import java.io.File; | |
| 5 import java.io.FileInputStream; | |
| 6 import java.io.IOException; | |
| 7 import java.io.InputStream; | |
| 8 import java.io.OutputStream; | |
| 9 | |
| 10 import java.util.Stack; | |
| 11 | |
| 12 import java.util.zip.ZipEntry; | |
| 13 import java.util.zip.ZipOutputStream; | |
| 14 | |
| 15 /** | |
| 16 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) | |
| 17 */ | |
| 18 public final class FileUtils | |
| 19 { | |
| 20 private FileUtils() { | |
| 21 } | |
| 22 | |
| 23 public final static boolean deleteRecursive(File file) { | |
| 24 | |
| 25 if (file == null) { | |
| 26 return false; | |
| 27 } | |
| 28 | |
| 29 if (file.isDirectory()) { | |
| 30 File [] files = file.listFiles(); | |
| 31 if (files != null) { | |
| 32 for (File sub: files) { | |
| 33 if (!deleteRecursive(sub)) { | |
| 34 return false; | |
| 35 } | |
| 36 } | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 return file.delete(); | |
| 41 } | |
| 42 | |
| 43 public static void createZipArchive( | |
| 44 File file, | |
| 45 OutputStream outputStream | |
| 46 ) | |
| 47 throws IOException | |
| 48 { | |
| 49 ZipOutputStream out = new ZipOutputStream(outputStream); | |
| 50 | |
| 51 if (file.isFile()) { | |
| 52 copyFileToZip("", file, out); | |
| 53 } | |
| 54 else if (file.isDirectory()) { | |
| 55 | |
| 56 Stack<PrefixDir> stack = new Stack<PrefixDir>(); | |
| 57 stack.push(new PrefixDir(file.getName() + "/", file)); | |
| 58 | |
| 59 while (!stack.isEmpty()) { | |
| 60 PrefixDir pd = stack.pop(); | |
| 61 | |
| 62 ZipEntry dirEntry = new ZipEntry(pd.prefix); | |
| 63 out.putNextEntry(dirEntry); | |
| 64 out.closeEntry(); | |
| 65 | |
| 66 File [] files = pd.dir.listFiles(); | |
| 67 if (files != null) { | |
| 68 for (File sub: files) { | |
| 69 if (sub.isDirectory()) { | |
| 70 stack.push(new PrefixDir( | |
| 71 pd.prefix + sub.getName() + "/", | |
| 72 sub)); | |
| 73 } | |
| 74 else if (sub.isFile()) { | |
| 75 copyFileToZip(pd.prefix, sub, out); | |
| 76 } | |
| 77 } | |
| 78 } | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 out.finish(); | |
| 83 } | |
| 84 | |
| 85 private static final class PrefixDir { | |
| 86 | |
| 87 String prefix; | |
| 88 File dir; | |
| 89 | |
| 90 public PrefixDir(String prefix, File dir) { | |
| 91 this.prefix = prefix; | |
| 92 this.dir = dir; | |
| 93 } | |
| 94 | |
| 95 } // class PrefixDir | |
| 96 | |
| 97 private static void copyFileToZip( | |
| 98 String prefix, | |
| 99 File file, | |
| 100 ZipOutputStream out | |
| 101 ) | |
| 102 throws IOException | |
| 103 { | |
| 104 String entryName = prefix + file.getName(); | |
| 105 ZipEntry entry = new ZipEntry(entryName); | |
| 106 out.putNextEntry(entry); | |
| 107 InputStream in = null; | |
| 108 try { | |
| 109 in = | |
| 110 new BufferedInputStream( | |
| 111 new FileInputStream(file), 20*1024); | |
| 112 | |
| 113 byte [] buf = new byte[2048]; | |
| 114 | |
| 115 int r; | |
| 116 while ((r = in.read(buf)) > 0) { | |
| 117 out.write(buf, 0, r); | |
| 118 } | |
| 119 } | |
| 120 finally { | |
| 121 if (in != null) { | |
| 122 try { in.close(); } | |
| 123 catch (IOException ioe) {} | |
| 124 } | |
| 125 } | |
| 126 out.closeEntry(); | |
| 127 } | |
| 128 } | |
| 129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |