Package com.aspose.zip

Class SevenZipLoadOptions

  • public class SevenZipLoadOptions
extends Object

    Options with which SevenZipArchive is loaded from a compressed file.

    • Constructor Detail

      • SevenZipLoadOptions

        public SevenZipLoadOptions()

    • Method Detail

      • getDecryptionPassword

        public final String getDecryptionPassword()

        Gets the password to decrypt entries and entry names.

        You can provide decryption password once on archive extraction.

        
     try (FileInputStream fs = new FileInputStream("encrypted_archive.7z");
          FileOutputStream extracted = new FileOutputStream("extracted.bin")) {
         SevenZipLoadOptions options = new SevenZipLoadOptions();
         options.setDecryptionPassword("p@s$");
         try (SevenZipArchive archive = new SevenZipArchive(fs, options);
              InputStream decompressed = archive.getEntries().get(0).open()) {
             byte[] b = new byte[8192];
             int bytesRead;
             while (0 < (bytesRead = decompressed.read(b, 0, b.length))) {
                 extracted.write(b, 0, bytesRead);
             }
         }
     } catch (IOException ex) {
     }

        Returns:
        the password to decrypt entries and entry names.
        See Also:
        SevenZipArchiveEntry.open(String)

      • setDecryptionPassword

        public final void setDecryptionPassword​(String value)

        Sets the password to decrypt entries and entry names.

        You can provide decryption password once on archive extraction.

        
     try (FileInputStream fs = new FileInputStream("encrypted_archive.7z");
          FileOutputStream extracted = new FileOutputStream("extracted.bin")) {
         SevenZipLoadOptions options = new SevenZipLoadOptions();
         options.setDecryptionPassword("p@s$");
         try (SevenZipArchive archive = new SevenZipArchive(fs, options);
              InputStream decompressed = archive.getEntries().get(0).open()) {
             byte[] b = new byte[8192];
             int bytesRead;
             while (0 < (bytesRead = decompressed.read(b, 0, b.length))) {
                 extracted.write(b, 0, bytesRead);
             }
         }
     } catch (IOException ex) {
     }

        Parameters:
        value - the password to decrypt entries and entry names.
        See Also:
        SevenZipArchiveEntry.open(String)

      • setCancellationFlag

        public void setCancellationFlag​(CancellationFlag value)

        Sets a cancellation flag used to cancel the extraction operation.

        Cancel 7Z archive extraction after a certain time. 

        
     try (CancellationFlag cf = new CancellationFlag()) {
         cf.cancelAfter(TimeUnit.SECONDS.toMillis(60));
         SevenZipLoadOptions options = new SevenZipLoadOptions();
         options.setCancellationFlag(cf);
         try (SevenZipArchive a = new SevenZipArchive("big.7z", options)) {
             try {
                 a.getEntries().get(0).extract("data.bin");
             } catch (OperationCanceledException e) {
                 System.out.println("Extraction was cancelled after 60 seconds");
             }
         }
     }
        Cancellation mostly results in some data not being extracted.

        Parameters:
        value - a cancellation flag used to cancel the extraction operation.