/hudson-core/src/main/java/hudson/util/io/ZipArchiver.java

http://github.com/hudson/hudson · Java · 75 lines · 37 code · 8 blank · 30 comment · 2 complexity · 35b62e064b616259cbec5b71ab6ab48e MD5 · raw file

  1. /*
  2. * The MIT License
  3. *
  4. * Copyright (c) 2010, InfraDNA, Inc.
  5. *
  6. * Permission is hereby granted, free of charge, to any person obtaining a copy
  7. * of this software and associated documentation files (the "Software"), to deal
  8. * in the Software without restriction, including without limitation the rights
  9. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10. * copies of the Software, and to permit persons to whom the Software is
  11. * furnished to do so, subject to the following conditions:
  12. *
  13. * The above copyright notice and this permission notice shall be included in
  14. * all copies or substantial portions of the Software.
  15. *
  16. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22. * THE SOFTWARE.
  23. */
  24. package hudson.util.io;
  25. import hudson.util.FileVisitor;
  26. import org.apache.tools.zip.ZipEntry;
  27. import org.apache.tools.zip.ZipOutputStream;
  28. import java.io.File;
  29. import java.io.FileInputStream;
  30. import java.io.IOException;
  31. import java.io.OutputStream;
  32. /**
  33. * {@link FileVisitor} that creates a zip archive.
  34. *
  35. * @see ArchiverFactory#ZIP
  36. */
  37. final class ZipArchiver extends Archiver {
  38. private final byte[] buf = new byte[8192];
  39. private final ZipOutputStream zip;
  40. ZipArchiver(OutputStream out) {
  41. zip = new ZipOutputStream(out);
  42. zip.setEncoding(System.getProperty("file.encoding"));
  43. }
  44. public void visit(File f, String relativePath) throws IOException {
  45. if(f.isDirectory()) {
  46. ZipEntry dirZipEntry = new ZipEntry(relativePath+'/');
  47. // Setting this bit explicitly is needed by some unzipping applications (see HUDSON-3294).
  48. dirZipEntry.setExternalAttributes(BITMASK_IS_DIRECTORY);
  49. zip.putNextEntry(dirZipEntry);
  50. zip.closeEntry();
  51. } else {
  52. zip.putNextEntry(new ZipEntry(relativePath));
  53. FileInputStream in = new FileInputStream(f);
  54. int len;
  55. while((len=in.read(buf))>0)
  56. zip.write(buf,0,len);
  57. in.close();
  58. zip.closeEntry();
  59. }
  60. entriesWritten++;
  61. }
  62. public void close() throws IOException {
  63. zip.close();
  64. }
  65. // Bitmask indicating directories in 'external attributes' of a ZIP archive entry.
  66. private static final long BITMASK_IS_DIRECTORY = 1<<4;
  67. }