Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/FileUtils.java @ 762:b3f922908a31
ISSUE122: Added all required Columns for the CSV-Export.
gnv-artifacts/trunk@817 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 22 Mar 2010 12:47:44 +0000 |
parents | 211cad2fb5ba |
children | eedad2ddad14 |
rev | line source |
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1 package de.intevation.gnv.utils; |
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2 |
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3 import java.io.BufferedInputStream; |
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4 import java.io.File; |
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5 import java.io.FileInputStream; |
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6 import java.io.IOException; |
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7 import java.io.InputStream; |
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8 import java.io.OutputStream; |
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9 |
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10 import java.util.Stack; |
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11 |
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12 import java.util.zip.ZipEntry; |
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13 import java.util.zip.ZipOutputStream; |
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14 |
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15 /** |
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16 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) |
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17 */ |
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18 public final class FileUtils |
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19 { |
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20 private FileUtils() { |
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21 } |
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22 |
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23 public final static boolean deleteRecursive(File file) { |
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24 |
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25 if (file == null) { |
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26 return false; |
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27 } |
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28 |
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29 if (file.isDirectory()) { |
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30 File [] files = file.listFiles(); |
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31 if (files != null) { |
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32 for (File sub: files) { |
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33 if (!deleteRecursive(sub)) { |
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34 return false; |
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35 } |
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36 } |
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37 } |
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38 } |
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39 |
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40 return file.delete(); |
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41 } |
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42 |
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43 public static void createZipArchive( |
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44 File file, |
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45 OutputStream outputStream |
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46 ) |
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47 throws IOException |
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48 { |
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49 ZipOutputStream out = new ZipOutputStream(outputStream); |
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50 |
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51 if (file.isFile()) { |
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52 copyFileToZip("", file, out); |
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53 } |
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54 else if (file.isDirectory()) { |
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55 |
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56 Stack<PrefixDir> stack = new Stack<PrefixDir>(); |
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57 stack.push(new PrefixDir(file.getName() + "/", file)); |
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58 |
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59 while (!stack.isEmpty()) { |
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60 PrefixDir pd = stack.pop(); |
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61 |
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62 ZipEntry dirEntry = new ZipEntry(pd.prefix); |
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63 out.putNextEntry(dirEntry); |
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64 out.closeEntry(); |
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65 |
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66 File [] files = pd.dir.listFiles(); |
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67 if (files != null) { |
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68 for (File sub: files) { |
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69 if (sub.isDirectory()) { |
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70 stack.push(new PrefixDir( |
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71 pd.prefix + sub.getName() + "/", |
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72 sub)); |
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73 } |
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74 else if (sub.isFile()) { |
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75 copyFileToZip(pd.prefix, sub, out); |
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76 } |
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77 } |
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78 } |
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79 } |
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80 } |
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81 |
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82 out.finish(); |
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83 } |
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84 |
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85 private static final class PrefixDir { |
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86 |
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87 String prefix; |
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88 File dir; |
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89 |
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90 public PrefixDir(String prefix, File dir) { |
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91 this.prefix = prefix; |
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92 this.dir = dir; |
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93 } |
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94 |
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95 } // class PrefixDir |
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96 |
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97 private static void copyFileToZip( |
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98 String prefix, |
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99 File file, |
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100 ZipOutputStream out |
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101 ) |
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102 throws IOException |
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103 { |
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104 String entryName = prefix + file.getName(); |
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105 ZipEntry entry = new ZipEntry(entryName); |
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106 out.putNextEntry(entry); |
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107 InputStream in = null; |
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108 try { |
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109 in = |
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110 new BufferedInputStream( |
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111 new FileInputStream(file), 20*1024); |
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112 |
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113 byte [] buf = new byte[2048]; |
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114 |
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115 int r; |
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116 while ((r = in.read(buf)) > 0) { |
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117 out.write(buf, 0, r); |
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118 } |
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119 } |
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120 finally { |
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121 if (in != null) { |
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122 try { in.close(); } |
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123 catch (IOException ioe) {} |
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124 } |
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125 } |
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126 out.closeEntry(); |
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127 } |
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128 } |
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129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |