Java decompress archive file












1














I have written below program to extract archive files. Though it works as required, I would like to have your advice on the possible ways to enhance its performance and reduce code complexity or is it possible to achieve the results in a much simpler way.



Also, In the commonExtracter method, instead of creating directories intermittently is it possible to make use of temporary folders to do the same job? The final step should be like creating directory and put the decompressed temp folder inside it.



public class ExtractAllArchives {

public static void main(String args) {
File archiveFileLocation = new File("C:\ZIP\Sample.tar.gz");
// File archiveFileLocation = new File("C:\ZIP\Root.zip");
File destination = null;

try {
destination = new File(archiveFileLocation.getParent() + File.separator
+ FilenameUtils.getBaseName(archiveFileLocation.getName()));
if (destination.exists()) {
FileUtils.deleteDirectory(destination);
}
destination.mkdir();
} catch (IOException e) {
e.printStackTrace();
}

String fileExtn = FilenameUtils.getExtension(archiveFileLocation.getAbsolutePath());
String outputFolder = destination.getAbsolutePath();
switch (fileExtn) {
case "gz":
try (TarArchiveInputStream ais = new TarArchiveInputStream(
new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(archiveFileLocation))))) {
commonExtracter(ArchiveStreamFactory.TAR, ais, outputFolder);
} catch (Exception e1) {
e1.printStackTrace();
}
break;
case "zip":
try (ArchiveInputStream ais = new ArchiveStreamFactory().createArchiveInputStream(ArchiveStreamFactory.ZIP,
new FileInputStream(archiveFileLocation))) {
commonExtracter(ArchiveStreamFactory.ZIP, ais, outputFolder);
} catch (Exception e1) {
e1.printStackTrace();
}
break;
default:
System.out.println("No archive extractor found");
}
System.out.println("File extraction completed");
}

private static void commonExtracter(String archiveName, ArchiveInputStream ais, String outputFolder) {
ArchiveEntry entry = null;
try {
while ((entry = ais.getNextEntry()) != null) {
String filePath = outputFolder + File.separator + entry.getName();
Path fileLoc = Paths.get(filePath);
if (entry.isDirectory()) {
new File(filePath).mkdirs();
} else {
try (OutputStream bos = Files.newOutputStream(fileLoc)) {
IOUtils.copy(ais, bos);
} catch (Exception e) {
System.out.println("Failed to create the output file");
}
}
}
} catch (IOException e) {
e.printStackTrace();
}

}

Any help on this topic is much appreciated.

Thank you.









share|improve this question



























    1














    I have written below program to extract archive files. Though it works as required, I would like to have your advice on the possible ways to enhance its performance and reduce code complexity or is it possible to achieve the results in a much simpler way.



    Also, In the commonExtracter method, instead of creating directories intermittently is it possible to make use of temporary folders to do the same job? The final step should be like creating directory and put the decompressed temp folder inside it.



    public class ExtractAllArchives {

    public static void main(String args) {
    File archiveFileLocation = new File("C:\ZIP\Sample.tar.gz");
    // File archiveFileLocation = new File("C:\ZIP\Root.zip");
    File destination = null;

    try {
    destination = new File(archiveFileLocation.getParent() + File.separator
    + FilenameUtils.getBaseName(archiveFileLocation.getName()));
    if (destination.exists()) {
    FileUtils.deleteDirectory(destination);
    }
    destination.mkdir();
    } catch (IOException e) {
    e.printStackTrace();
    }

    String fileExtn = FilenameUtils.getExtension(archiveFileLocation.getAbsolutePath());
    String outputFolder = destination.getAbsolutePath();
    switch (fileExtn) {
    case "gz":
    try (TarArchiveInputStream ais = new TarArchiveInputStream(
    new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(archiveFileLocation))))) {
    commonExtracter(ArchiveStreamFactory.TAR, ais, outputFolder);
    } catch (Exception e1) {
    e1.printStackTrace();
    }
    break;
    case "zip":
    try (ArchiveInputStream ais = new ArchiveStreamFactory().createArchiveInputStream(ArchiveStreamFactory.ZIP,
    new FileInputStream(archiveFileLocation))) {
    commonExtracter(ArchiveStreamFactory.ZIP, ais, outputFolder);
    } catch (Exception e1) {
    e1.printStackTrace();
    }
    break;
    default:
    System.out.println("No archive extractor found");
    }
    System.out.println("File extraction completed");
    }

    private static void commonExtracter(String archiveName, ArchiveInputStream ais, String outputFolder) {
    ArchiveEntry entry = null;
    try {
    while ((entry = ais.getNextEntry()) != null) {
    String filePath = outputFolder + File.separator + entry.getName();
    Path fileLoc = Paths.get(filePath);
    if (entry.isDirectory()) {
    new File(filePath).mkdirs();
    } else {
    try (OutputStream bos = Files.newOutputStream(fileLoc)) {
    IOUtils.copy(ais, bos);
    } catch (Exception e) {
    System.out.println("Failed to create the output file");
    }
    }
    }
    } catch (IOException e) {
    e.printStackTrace();
    }

    }

    Any help on this topic is much appreciated.

    Thank you.









    share|improve this question

























      1












      1








      1







      I have written below program to extract archive files. Though it works as required, I would like to have your advice on the possible ways to enhance its performance and reduce code complexity or is it possible to achieve the results in a much simpler way.



      Also, In the commonExtracter method, instead of creating directories intermittently is it possible to make use of temporary folders to do the same job? The final step should be like creating directory and put the decompressed temp folder inside it.



      public class ExtractAllArchives {

      public static void main(String args) {
      File archiveFileLocation = new File("C:\ZIP\Sample.tar.gz");
      // File archiveFileLocation = new File("C:\ZIP\Root.zip");
      File destination = null;

      try {
      destination = new File(archiveFileLocation.getParent() + File.separator
      + FilenameUtils.getBaseName(archiveFileLocation.getName()));
      if (destination.exists()) {
      FileUtils.deleteDirectory(destination);
      }
      destination.mkdir();
      } catch (IOException e) {
      e.printStackTrace();
      }

      String fileExtn = FilenameUtils.getExtension(archiveFileLocation.getAbsolutePath());
      String outputFolder = destination.getAbsolutePath();
      switch (fileExtn) {
      case "gz":
      try (TarArchiveInputStream ais = new TarArchiveInputStream(
      new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(archiveFileLocation))))) {
      commonExtracter(ArchiveStreamFactory.TAR, ais, outputFolder);
      } catch (Exception e1) {
      e1.printStackTrace();
      }
      break;
      case "zip":
      try (ArchiveInputStream ais = new ArchiveStreamFactory().createArchiveInputStream(ArchiveStreamFactory.ZIP,
      new FileInputStream(archiveFileLocation))) {
      commonExtracter(ArchiveStreamFactory.ZIP, ais, outputFolder);
      } catch (Exception e1) {
      e1.printStackTrace();
      }
      break;
      default:
      System.out.println("No archive extractor found");
      }
      System.out.println("File extraction completed");
      }

      private static void commonExtracter(String archiveName, ArchiveInputStream ais, String outputFolder) {
      ArchiveEntry entry = null;
      try {
      while ((entry = ais.getNextEntry()) != null) {
      String filePath = outputFolder + File.separator + entry.getName();
      Path fileLoc = Paths.get(filePath);
      if (entry.isDirectory()) {
      new File(filePath).mkdirs();
      } else {
      try (OutputStream bos = Files.newOutputStream(fileLoc)) {
      IOUtils.copy(ais, bos);
      } catch (Exception e) {
      System.out.println("Failed to create the output file");
      }
      }
      }
      } catch (IOException e) {
      e.printStackTrace();
      }

      }

      Any help on this topic is much appreciated.

      Thank you.









      share|improve this question













      I have written below program to extract archive files. Though it works as required, I would like to have your advice on the possible ways to enhance its performance and reduce code complexity or is it possible to achieve the results in a much simpler way.



      Also, In the commonExtracter method, instead of creating directories intermittently is it possible to make use of temporary folders to do the same job? The final step should be like creating directory and put the decompressed temp folder inside it.



      public class ExtractAllArchives {

      public static void main(String args) {
      File archiveFileLocation = new File("C:\ZIP\Sample.tar.gz");
      // File archiveFileLocation = new File("C:\ZIP\Root.zip");
      File destination = null;

      try {
      destination = new File(archiveFileLocation.getParent() + File.separator
      + FilenameUtils.getBaseName(archiveFileLocation.getName()));
      if (destination.exists()) {
      FileUtils.deleteDirectory(destination);
      }
      destination.mkdir();
      } catch (IOException e) {
      e.printStackTrace();
      }

      String fileExtn = FilenameUtils.getExtension(archiveFileLocation.getAbsolutePath());
      String outputFolder = destination.getAbsolutePath();
      switch (fileExtn) {
      case "gz":
      try (TarArchiveInputStream ais = new TarArchiveInputStream(
      new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(archiveFileLocation))))) {
      commonExtracter(ArchiveStreamFactory.TAR, ais, outputFolder);
      } catch (Exception e1) {
      e1.printStackTrace();
      }
      break;
      case "zip":
      try (ArchiveInputStream ais = new ArchiveStreamFactory().createArchiveInputStream(ArchiveStreamFactory.ZIP,
      new FileInputStream(archiveFileLocation))) {
      commonExtracter(ArchiveStreamFactory.ZIP, ais, outputFolder);
      } catch (Exception e1) {
      e1.printStackTrace();
      }
      break;
      default:
      System.out.println("No archive extractor found");
      }
      System.out.println("File extraction completed");
      }

      private static void commonExtracter(String archiveName, ArchiveInputStream ais, String outputFolder) {
      ArchiveEntry entry = null;
      try {
      while ((entry = ais.getNextEntry()) != null) {
      String filePath = outputFolder + File.separator + entry.getName();
      Path fileLoc = Paths.get(filePath);
      if (entry.isDirectory()) {
      new File(filePath).mkdirs();
      } else {
      try (OutputStream bos = Files.newOutputStream(fileLoc)) {
      IOUtils.copy(ais, bos);
      } catch (Exception e) {
      System.out.println("Failed to create the output file");
      }
      }
      }
      } catch (IOException e) {
      e.printStackTrace();
      }

      }

      Any help on this topic is much appreciated.

      Thank you.






      java gzip java-io decompression ziparchive






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 at 3:14









      Alphonsa

      113




      113





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53404775%2fjava-decompress-archive-file%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53404775%2fjava-decompress-archive-file%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          404 Error Contact Form 7 ajax form submitting

          How to know if a Active Directory user can login interactively

          TypeError: fit_transform() missing 1 required positional argument: 'X'