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

The following examples show how to use net.lingala.zip4j.model.FileHeader#setOffsetLocalHeader() . 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: AbstractModifyFileTask.java    From zip4j with Apache License 2.0 6 votes vote down vote up 
void updateOffsetsForAllSubsequentFileHeaders(ZipModel zipModel, FileHeader fileHeaderModified, long offsetToAdd) throws ZipException {
  int indexOfFileHeader = HeaderUtil.getIndexOfFileHeader(zipModel, fileHeaderModified);

  if (indexOfFileHeader == -1) {
    throw new ZipException("Could not locate modified file header in zipModel");
  }

  List<FileHeader> allFileHeaders = zipModel.getCentralDirectory().getFileHeaders();

  for (int i = indexOfFileHeader + 1; i < allFileHeaders.size(); i++) {
    FileHeader fileHeaderToUpdate = allFileHeaders.get(i);
    fileHeaderToUpdate.setOffsetLocalHeader(fileHeaderToUpdate.getOffsetLocalHeader() + offsetToAdd);

    if (zipModel.isZip64Format()
        && fileHeaderToUpdate.getZip64ExtendedInfo() != null
        && fileHeaderToUpdate.getZip64ExtendedInfo().getOffsetLocalHeader() != -1) {

      fileHeaderToUpdate.getZip64ExtendedInfo().setOffsetLocalHeader(
          fileHeaderToUpdate.getZip64ExtendedInfo().getOffsetLocalHeader() + offsetToAdd
      );
    }
  }
}
Example 2
Source File: MergeSplitZipFileTask.java    From zip4j with Apache License 2.0 5 votes vote down vote up 
private void updateFileHeaderOffsetsForIndex(List<FileHeader> fileHeaders, long offsetToAdd, int index,
                                             int splitSignatureOverhead) {
  for (FileHeader fileHeader : fileHeaders) {
    if (fileHeader.getDiskNumberStart() == index) {
      fileHeader.setOffsetLocalHeader(fileHeader.getOffsetLocalHeader() + offsetToAdd - splitSignatureOverhead);
      fileHeader.setDiskNumberStart(0);
    }
  }
}
Example 3
Source File: HeaderReader.java    From zip4j with Apache License 2.0 5 votes vote down vote up 
private void readZip64ExtendedInfo(FileHeader fileHeader, RawIO rawIO) throws ZipException {
  if (fileHeader.getExtraDataRecords() == null || fileHeader.getExtraDataRecords().size() <= 0) {
    return;
  }

  Zip64ExtendedInfo zip64ExtendedInfo = readZip64ExtendedInfo(fileHeader.getExtraDataRecords(), rawIO,
      fileHeader.getUncompressedSize(), fileHeader.getCompressedSize(), fileHeader.getOffsetLocalHeader(),
      fileHeader.getDiskNumberStart());

  if (zip64ExtendedInfo == null) {
    return;
  }

  fileHeader.setZip64ExtendedInfo(zip64ExtendedInfo);

  if (zip64ExtendedInfo.getUncompressedSize() != -1) {
    fileHeader.setUncompressedSize(zip64ExtendedInfo.getUncompressedSize());
  }

  if (zip64ExtendedInfo.getCompressedSize() != -1) {
    fileHeader.setCompressedSize(zip64ExtendedInfo.getCompressedSize());
  }

  if (zip64ExtendedInfo.getOffsetLocalHeader() != -1) {
    fileHeader.setOffsetLocalHeader(zip64ExtendedInfo.getOffsetLocalHeader());
  }

  if (zip64ExtendedInfo.getDiskNumberStart() != -1) {
    fileHeader.setDiskNumberStart(zip64ExtendedInfo.getDiskNumberStart());
  }
}
Example 4
Source File: HeaderReader.java    From AndroidZip with Apache License 2.0 5 votes vote down vote up 
/**
 * Reads Zip64 Extended info and saves it in the {@link FileHeader}
 * @param fileHeader
 * @throws ZipException
 */
private void readAndSaveZip64ExtendedInfo(FileHeader fileHeader) throws ZipException {
	if (fileHeader == null) {
		throw new ZipException("file header is null in reading Zip64 Extended Info");
	}
	
	if (fileHeader.getExtraDataRecords() == null || fileHeader.getExtraDataRecords().size() <= 0) {
		return;
	}
	
	Zip64ExtendedInfo zip64ExtendedInfo = readZip64ExtendedInfo(
			fileHeader.getExtraDataRecords(), 
			fileHeader.getUncompressedSize(), 
			fileHeader.getCompressedSize(), 
			fileHeader.getOffsetLocalHeader(), 
			fileHeader.getDiskNumberStart());
	
	if (zip64ExtendedInfo != null) {
		fileHeader.setZip64ExtendedInfo(zip64ExtendedInfo);
		if (zip64ExtendedInfo.getUnCompressedSize() != -1)
			fileHeader.setUncompressedSize(zip64ExtendedInfo.getUnCompressedSize());
		
		if (zip64ExtendedInfo.getCompressedSize() != -1)
			fileHeader.setCompressedSize(zip64ExtendedInfo.getCompressedSize());
		
		if (zip64ExtendedInfo.getOffsetLocalHeader() != -1)
			fileHeader.setOffsetLocalHeader(zip64ExtendedInfo.getOffsetLocalHeader());
		
		if (zip64ExtendedInfo.getDiskNumberStart() != -1)
			fileHeader.setDiskNumberStart(zip64ExtendedInfo.getDiskNumberStart());
	}
}