Module kala.compress.compressors.pack200
Package kala.compress.harmony.unpack200

Class SegmentHeader

  • public class SegmentHeader
extends java.lang.Object
    SegmentHeader is the header band of a Segment

    • Field Detail

      • EMPTY_BYTE_ARRAY

        private static final byte[] EMPTY_BYTE_ARRAY

      • magic

        private static final int[] magic
        The magic header for a Pack200 Segment is 0xCAFED00D. I wonder where they get their inspiration from ...

      • archiveMajor

        private int archiveMajor

      • archiveMinor

        private int archiveMinor

      • archiveModtime

        private long archiveModtime

      • archiveSize

        private long archiveSize

      • attributeDefinitionCount

        private int attributeDefinitionCount

      • bandHeadersInputStream

        private java.io.InputStream bandHeadersInputStream

      • bandHeadersSize

        private int bandHeadersSize

      • classCount

        private int classCount

      • cpClassCount

        private int cpClassCount

      • cpDescriptorCount

        private int cpDescriptorCount

      • cpDoubleCount

        private int cpDoubleCount

      • cpFieldCount

        private int cpFieldCount

      • cpFloatCount

        private int cpFloatCount

      • cpIMethodCount

        private int cpIMethodCount

      • cpIntCount

        private int cpIntCount

      • cpLongCount

        private int cpLongCount

      • cpMethodCount

        private int cpMethodCount

      • cpSignatureCount

        private int cpSignatureCount

      • cpStringCount

        private int cpStringCount

      • cpUTF8Count

        private int cpUTF8Count

      • defaultClassMajorVersion

        private int defaultClassMajorVersion

      • defaultClassMinorVersion

        private int defaultClassMinorVersion

      • innerClassCount

        private int innerClassCount

      • numberOfFiles

        private int numberOfFiles

      • segmentsRemaining

        private int segmentsRemaining

      • segment

        private final Segment segment

      • archiveSizeOffset

        private int archiveSizeOffset

    • Constructor Detail

      • SegmentHeader

        public SegmentHeader​(Segment segment)

    • Method Detail

      • decodeScalar

        private int decodeScalar​(java.lang.String name,
                         java.io.InputStream in,
                         BHSDCodec codec)
                  throws java.io.IOException,
                         Pack200Exception
        Decode a scalar from the band file. A scalar is like a band, but does not perform any band code switching.
        Parameters:
        name - the name of the scalar (primarily for logging/debugging purposes)
        in - the input stream to read from
        codec - the codec for this scalar
        Returns:
        the decoded value
        Throws:
        java.io.IOException - if there is a problem reading from the underlying input stream
        Pack200Exception - if there is a problem decoding the value or that the value is invalid

      • decodeScalar

        private int[] decodeScalar​(java.lang.String name,
                           java.io.InputStream in,
                           BHSDCodec codec,
                           int n)
                    throws java.io.IOException,
                           Pack200Exception
        Decode a number of scalars from the band file. A scalar is like a band, but does not perform any band code switching.
        Parameters:
        name - the name of the scalar (primarily for logging/debugging purposes)
        in - the input stream to read from
        codec - the codec for this scalar
        Returns:
        an array of decoded long[] values
        Throws:
        java.io.IOException - if there is a problem reading from the underlying input stream
        Pack200Exception - if there is a problem decoding the value or that the value is invalid

      • getArchiveModtime

        public long getArchiveModtime()

      • getArchiveSize

        public long getArchiveSize()

      • getArchiveSizeOffset

        public int getArchiveSizeOffset()

      • getAttributeDefinitionCount

        public int getAttributeDefinitionCount()

      • getBandHeadersInputStream

        public java.io.InputStream getBandHeadersInputStream()
        Obtain the band headers data as an input stream. If no band headers are present, this will return an empty input stream to prevent any further reads taking place. Note that as a stream, data consumed from this input stream can't be re-used. Data is only read from this stream if the encoding is such that additional information needs to be decoded from the stream itself.
        Returns:
        the band headers input stream

      • getBandHeadersSize

        public int getBandHeadersSize()

      • getClassCount

        public int getClassCount()

      • getCpClassCount

        public int getCpClassCount()

      • getCpDescriptorCount

        public int getCpDescriptorCount()

      • getCpDoubleCount

        public int getCpDoubleCount()

      • getCpFieldCount

        public int getCpFieldCount()

      • getCpFloatCount

        public int getCpFloatCount()

      • getCpIMethodCount

        public int getCpIMethodCount()

      • getCpIntCount

        public int getCpIntCount()

      • getCpLongCount

        public int getCpLongCount()

      • getCpMethodCount

        public int getCpMethodCount()

      • getCpSignatureCount

        public int getCpSignatureCount()

      • getCpStringCount

        public int getCpStringCount()

      • getCpUTF8Count

        public int getCpUTF8Count()

      • getDefaultClassMajorVersion

        public int getDefaultClassMajorVersion()

      • getDefaultClassMinorVersion

        public int getDefaultClassMinorVersion()

      • getInnerClassCount

        public int getInnerClassCount()

      • getNumberOfFiles

        public int getNumberOfFiles()

      • getSegmentsRemaining

        public int getSegmentsRemaining()

      • parseArchiveFileCounts

        private void parseArchiveFileCounts​(java.io.InputStream in)
                             throws java.io.IOException,
                                    Pack200Exception
        Throws:
        java.io.IOException
        Pack200Exception

      • parseArchiveSpecialCounts

        private void parseArchiveSpecialCounts​(java.io.InputStream in)
                                throws java.io.IOException,
                                       Pack200Exception
        Throws:
        java.io.IOException
        Pack200Exception

      • parseClassCounts

        private void parseClassCounts​(java.io.InputStream in)
                       throws java.io.IOException,
                              Pack200Exception
        Throws:
        java.io.IOException
        Pack200Exception

      • parseCpCounts

        private void parseCpCounts​(java.io.InputStream in)
                    throws java.io.IOException,
                           Pack200Exception
        Throws:
        java.io.IOException
        Pack200Exception

      • read

        public void read​(java.io.InputStream in)
          throws java.io.IOException,
                 java.lang.Error,
                 Pack200Exception
        Throws:
        java.io.IOException
        java.lang.Error
        Pack200Exception

      • setArchiveMajorVersion

        private void setArchiveMajorVersion​(int version)
                             throws Pack200Exception
        Sets the major version of this archive.
        Parameters:
        version - the minor version of the archive
        Throws:
        Pack200Exception - if the major version is not 150

      • setArchiveMinorVersion

        private void setArchiveMinorVersion​(int version)
                             throws Pack200Exception
        Sets the minor version of this archive
        Parameters:
        version - the minor version of the archive
        Throws:
        Pack200Exception - if the minor version is not 7

      • setArchiveModtime

        public void setArchiveModtime​(long archiveModtime)

      • setArchiveSize

        public void setArchiveSize​(long archiveSize)

      • setAttributeDefinitionCount

        private void setAttributeDefinitionCount​(long valuie)

      • setBandHeadersData

        private void setBandHeadersData​(byte[] bandHeaders)

      • setSegmentsRemaining

        public void setSegmentsRemaining​(long value)

      • unpack

        public void unpack()