Class ZipSplitOutputStream
- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
ZipArchiveOutputStream
when creating a split archive.- Since:
- 1.20
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate long
private int
private boolean
private OutputStream
private final byte[]
private final long
private static final long
private static final long
8.5.1 Capacities for split archives are as follows:private File
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
private File
createNewSplitSegmentFile
(Integer zipSplitSegmentSuffixIndex) Create the new zip split segment, the last zip segment should be .zip, and the zip split segments' suffix should be like .z01, .z02, .z03, ...private void
finish()
The last zip split segment's suffix should be .ziplong
int
private void
Create a new zip split segment and prepare to write to the new segmentvoid
prepareToWriteUnsplittableContent
(long unsplittableContentSize) Some data can not be written to different split segments, for example:void
write
(byte[] b) void
write
(byte[] b, int off, int len) Write the data to zip split segments, if the remaining space of current split segment is not enough, then a new split segment should be createdvoid
write
(int i) private void
Write the zip split signature (0x08074B50) to the head of the first zip split segmentMethods inherited from class java.io.OutputStream
flush
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Field Details
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outputStream
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zipFile
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splitSize
private final long splitSize -
currentSplitSegmentIndex
private int currentSplitSegmentIndex -
currentSplitSegmentBytesWritten
private long currentSplitSegmentBytesWritten -
finished
private boolean finished -
singleByte
private final byte[] singleByte -
ZIP_SEGMENT_MIN_SIZE
private static final long ZIP_SEGMENT_MIN_SIZE8.5.1 Capacities for split archives are as follows:Maximum number of segments = 4,294,967,295 - 1 Maximum .ZIP segment size = 4,294,967,295 bytes (refer to section 8.5.6) Minimum segment size = 64K Maximum PKSFX segment size = 2,147,483,647 bytes
- See Also:
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ZIP_SEGMENT_MAX_SIZE
private static final long ZIP_SEGMENT_MAX_SIZE- See Also:
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Constructor Details
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ZipSplitOutputStream
public ZipSplitOutputStream(File zipFile, long splitSize) throws IllegalArgumentException, IOException Create a split zip. If the zip file is smaller than the split size, then there will only be one split zip, and its suffix is .zip, otherwise the split segments should be like .z01, .z02, ... .z(N-1), .zip- Parameters:
zipFile
- the zip file to write tosplitSize
- the split size- Throws:
IllegalArgumentException
IOException
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Method Details
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prepareToWriteUnsplittableContent
public void prepareToWriteUnsplittableContent(long unsplittableContentSize) throws IllegalArgumentException, IOException Some data can not be written to different split segments, for example:4.4.1.5 The end of central directory record and the Zip64 end of central directory locator record MUST reside on the same disk when splitting or spanning an archive.
- Parameters:
unsplittableContentSize
-- Throws:
IllegalArgumentException
IOException
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write
- Specified by:
write
in classOutputStream
- Throws:
IOException
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write
- Overrides:
write
in classOutputStream
- Throws:
IOException
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write
Write the data to zip split segments, if the remaining space of current split segment is not enough, then a new split segment should be created- Overrides:
write
in classOutputStream
- Parameters:
b
- data to writeoff
- offset of the start of data in param blen
- the length of data to write- Throws:
IOException
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close
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classOutputStream
- Throws:
IOException
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finish
The last zip split segment's suffix should be .zip- Throws:
IOException
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openNewSplitSegment
Create a new zip split segment and prepare to write to the new segment- Throws:
IOException
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writeZipSplitSignature
Write the zip split signature (0x08074B50) to the head of the first zip split segment- Throws:
IOException
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createNewSplitSegmentFile
Create the new zip split segment, the last zip segment should be .zip, and the zip split segments' suffix should be like .z01, .z02, .z03, ... .z99, .z100, ..., .z(N-1), .zip8.3.3 Split ZIP files are typically written to the same location and are subject to name collisions if the spanned name format is used since each segment will reside on the same drive. To avoid name collisions, split archives are named as follows.
Segment 1 = filename.z01 Segment n-1 = filename.z(n-1) Segment n = filename.zip
NOTE: The zip split segment begin from 1,2,3,... , and we're creating a new segment, so the new segment suffix should be (currentSplitSegmentIndex + 2)
- Parameters:
zipSplitSegmentSuffixIndex
-- Returns:
- Throws:
IOException
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getCurrentSplitSegmentIndex
public int getCurrentSplitSegmentIndex() -
getCurrentSplitSegmentBytesWritten
public long getCurrentSplitSegmentBytesWritten()
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