Package 

Class ResourceAlignmentExtraField

  • All Implemented Interfaces:
    org.readium.r2.shared.util.zip.compress.archivers.zip.ZipExtraField 
    
public class ResourceAlignmentExtraField
 implements ZipExtraField

    An extra field who's sole purpose is to align and pad the local file header so that the entry's data starts at a certain position.

    The padding content of the padding is ignored and not retained when reading a padding field.

    This enables Commons Compress to create "aligned" archives similar to Android's zipalign command line tool.

    • Constructor Detail

      • ResourceAlignmentExtraField

        ResourceAlignmentExtraField()

      • ResourceAlignmentExtraField

        ResourceAlignmentExtraField(int alignment)

      • ResourceAlignmentExtraField

        ResourceAlignmentExtraField(int alignment, boolean allowMethodChange)

      • ResourceAlignmentExtraField

        ResourceAlignmentExtraField(int alignment, boolean allowMethodChange, int padding)

    • Method Detail

      • getAlignment

         short getAlignment()

        Gets requested alignment.

      • allowMethodChange

         boolean allowMethodChange()

        Indicates whether method change is allowed when re-compressing the ZIP file.

      • getCentralDirectoryData

         Array<byte> getCentralDirectoryData()

        The actual data to put into central directory - without Header-ID orlength specifier.

      • getLocalFileDataData

         Array<byte> getLocalFileDataData()

        The actual data to put into local file data - without Header-IDor length specifier.

      • parseFromCentralDirectoryData

         void parseFromCentralDirectoryData(Array<byte> buffer, int offset, int length)

        Populate data from this array as if it was in central directory data.

        Parameters:
        buffer - the buffer to read data from
        offset - offset into buffer to read data
        length - the length of data

      • parseFromLocalFileData

         void parseFromLocalFileData(Array<byte> buffer, int offset, int length)

        Populate data from this array as if it was in local file data.

        Parameters:
        buffer - the buffer to read data from
        offset - offset into buffer to read data
        length - the length of data