Java Code Examples for net.lingala.zip4j.model.FileHeader#setCompressionMethod()

The following examples show how to use net.lingala.zip4j.model.FileHeader#setCompressionMethod() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: HeaderWriterIT.java From zip4j with Apache License 2.0

6 votes

private List<FileHeader> createFileHeaders(int numberOfEntriesInCentralDirectory, long compressedSize,
                                           long uncompressedSize) {
  List<FileHeader> fileHeaders = new ArrayList<>();

  for (int i = 0; i < numberOfEntriesInCentralDirectory; i++) {
    FileHeader fileHeader = new FileHeader();
    fileHeader.setVersionMadeBy(VERSION_MADE_BY);
    fileHeader.setVersionNeededToExtract(VERSION_NEEDED_TO_EXTRACT);
    fileHeader.setFileName(FILE_NAME_PREFIX + i);
    fileHeader.setGeneralPurposeFlag(generateGeneralPurposeBytes(true));
    fileHeader.setCompressedSize(compressedSize);
    fileHeader.setUncompressedSize(uncompressedSize);
    fileHeader.setCompressionMethod(CompressionMethod.DEFLATE);
    fileHeader.setExternalFileAttributes(EXTERNAL_FILE_ATTRIBUTES);
    fileHeader.setFileComment(FILE_COMMENT_PREFIX + i);
    fileHeaders.add(fileHeader);

  }

  return fileHeaders;
}

Example 2

Source File: FileHeaderFactoryTest.java From zip4j with Apache License 2.0

6 votes

private FileHeader generateFileHeader(long lastModifiedFileTime) {
  FileHeader fileHeader = new FileHeader();
  fileHeader.setVersionNeededToExtract(20);
  fileHeader.setCompressionMethod(CompressionMethod.STORE);
  fileHeader.setLastModifiedTime(lastModifiedFileTime);
  fileHeader.setUncompressedSize(1000L);
  fileHeader.setFileName(FILE_NAME_IN_ZIP);
  fileHeader.setFileNameLength(FILE_NAME_IN_ZIP.getBytes(InternalZipConstants.CHARSET_UTF_8).length);
  fileHeader.setEncrypted(true);
  fileHeader.setEncryptionMethod(EncryptionMethod.AES);
  fileHeader.setCrc(1231231L);
  fileHeader.setCompressedSize(23523L);
  fileHeader.setGeneralPurposeFlag(new byte[] {2, 28});
  fileHeader.setDataDescriptorExists(true);
  fileHeader.setExtraFieldLength(190);
  return fileHeader;
}

Example 3

Source File: FileHeaderFactory.java From zip4j with Apache License 2.0

4 votes

public FileHeader generateFileHeader(ZipParameters zipParameters, boolean isSplitZip, int currentDiskNumberStart,
                                     Charset charset, RawIO rawIO)
    throws ZipException {

  FileHeader fileHeader = new FileHeader();
  fileHeader.setSignature(HeaderSignature.CENTRAL_DIRECTORY);
  fileHeader.setVersionMadeBy(determineVersionMadeBy(zipParameters, rawIO));
  fileHeader.setVersionNeededToExtract(determineVersionNeededToExtract(zipParameters).getCode());

  if (zipParameters.isEncryptFiles() && zipParameters.getEncryptionMethod() == EncryptionMethod.AES) {
    fileHeader.setCompressionMethod(CompressionMethod.AES_INTERNAL_ONLY);
    fileHeader.setAesExtraDataRecord(generateAESExtraDataRecord(zipParameters));
    fileHeader.setExtraFieldLength(fileHeader.getExtraFieldLength() + InternalZipConstants.AES_EXTRA_DATA_RECORD_SIZE);
  } else {
    fileHeader.setCompressionMethod(zipParameters.getCompressionMethod());
  }

  if (zipParameters.isEncryptFiles()) {
    if (zipParameters.getEncryptionMethod() == null || zipParameters.getEncryptionMethod() == EncryptionMethod.NONE) {
      throw new ZipException("Encryption method has to be set when encryptFiles flag is set in zip parameters");
    }

    fileHeader.setEncrypted(true);
    fileHeader.setEncryptionMethod(zipParameters.getEncryptionMethod());
  }

  String fileName = validateAndGetFileName(zipParameters.getFileNameInZip());
  fileHeader.setFileName(fileName);
  fileHeader.setFileNameLength(determineFileNameLength(fileName, charset));
  fileHeader.setDiskNumberStart(isSplitZip ? currentDiskNumberStart : 0);

  if (zipParameters.getLastModifiedFileTime() > 0) {
    fileHeader.setLastModifiedTime(Zip4jUtil.javaToDosTime(zipParameters.getLastModifiedFileTime()));
  } else {
    fileHeader.setLastModifiedTime(Zip4jUtil.javaToDosTime(System.currentTimeMillis()));
  }

  //For files added by this library, this attribute will be set after closeEntry is done
  fileHeader.setExternalFileAttributes(new byte[4]);
  fileHeader.setDirectory(isZipEntryDirectory(fileName));

  if (zipParameters.isWriteExtendedLocalFileHeader() && zipParameters.getEntrySize() == -1) {
    fileHeader.setUncompressedSize(0);
  } else {
    fileHeader.setUncompressedSize(zipParameters.getEntrySize());
  }

  if (zipParameters.isEncryptFiles() && zipParameters.getEncryptionMethod() == EncryptionMethod.ZIP_STANDARD) {
    fileHeader.setCrc(zipParameters.getEntryCRC());
  }

  fileHeader.setGeneralPurposeFlag(determineGeneralPurposeBitFlag(fileHeader.isEncrypted(), zipParameters, charset));
  fileHeader.setDataDescriptorExists(zipParameters.isWriteExtendedLocalFileHeader());
  fileHeader.setFileComment(zipParameters.getFileComment());
  return fileHeader;
}