Class PathSlice
- java.lang.Object
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- nonapi.io.github.classgraph.fileslice.Slice
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- nonapi.io.github.classgraph.fileslice.PathSlice
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
public class PathSlice extends Slice
APath
slice.
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Field Summary
Fields Modifier and Type Field Description private java.nio.channels.FileChannel
fileChannel
TheFileChannel
opened on thePath
.private long
fileLength
The file length.private java.util.concurrent.atomic.AtomicBoolean
isClosed
True ifclose()
has been called.private boolean
isTopLevelFileSlice
True if this is a top level file slice.java.nio.file.Path
path
ThePath
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Fields inherited from class nonapi.io.github.classgraph.fileslice.Slice
inflatedLengthHint, isDeflatedZipEntry, nestedJarHandler, parentSlice, sliceLength, sliceStartPos
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Constructor Summary
Constructors Modifier Constructor Description PathSlice(java.nio.file.Path path, boolean isDeflatedZipEntry, long inflatedLengthHint, NestedJarHandler nestedJarHandler)
Constructor for toplevel file slice.PathSlice(java.nio.file.Path path, NestedJarHandler nestedJarHandler)
Constructor for toplevel file slice.private
PathSlice(PathSlice parentSlice, long offset, long length, boolean isDeflatedZipEntry, long inflatedLengthHint, NestedJarHandler nestedJarHandler)
Constructor for treating a range of a file as a slice.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Close the slice.boolean
equals(java.lang.Object o)
int
hashCode()
byte[]
load()
Load the slice as a byte array.RandomAccessReader
randomAccessReader()
Read directly from FileChannel (slow path, but handles >2GB).java.nio.ByteBuffer
read()
Read the slice into aByteBuffer
(or memory-map the slice to aMappedByteBuffer
, ifClassGraph.enableMemoryMapping()
was called.)Slice
slice(long offset, long length, boolean isDeflatedZipEntry, long inflatedLengthHint)
Slice the file.-
Methods inherited from class nonapi.io.github.classgraph.fileslice.Slice
loadAsString, open, open
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Field Detail
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path
public final java.nio.file.Path path
ThePath
.
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fileLength
private final long fileLength
The file length.
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fileChannel
private java.nio.channels.FileChannel fileChannel
TheFileChannel
opened on thePath
.
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isTopLevelFileSlice
private final boolean isTopLevelFileSlice
True if this is a top level file slice.
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isClosed
private final java.util.concurrent.atomic.AtomicBoolean isClosed
True ifclose()
has been called.
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Constructor Detail
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PathSlice
private PathSlice(PathSlice parentSlice, long offset, long length, boolean isDeflatedZipEntry, long inflatedLengthHint, NestedJarHandler nestedJarHandler)
Constructor for treating a range of a file as a slice.- Parameters:
parentSlice
- the parent sliceoffset
- the offset of the sub-slice within the parent slicelength
- the length of the sub-sliceisDeflatedZipEntry
- true if this is a deflated zip entryinflatedLengthHint
- the uncompressed size of a deflated zip entry, or -1 if unknown, or 0 of this is not a deflated zip entry.nestedJarHandler
- the nested jar handler
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PathSlice
public PathSlice(java.nio.file.Path path, boolean isDeflatedZipEntry, long inflatedLengthHint, NestedJarHandler nestedJarHandler) throws java.io.IOException
Constructor for toplevel file slice.- Parameters:
path
- the pathisDeflatedZipEntry
- true if this is a deflated zip entryinflatedLengthHint
- the uncompressed size of a deflated zip entry, or -1 if unknown, or 0 of this is not a deflated zip entry.nestedJarHandler
- the nested jar handler- Throws:
java.io.IOException
- if the file cannot be opened.
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PathSlice
public PathSlice(java.nio.file.Path path, NestedJarHandler nestedJarHandler) throws java.io.IOException
Constructor for toplevel file slice.- Parameters:
path
- the pathnestedJarHandler
- the nested jar handler- Throws:
java.io.IOException
- if the file cannot be opened.
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Method Detail
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slice
public Slice slice(long offset, long length, boolean isDeflatedZipEntry, long inflatedLengthHint)
Slice the file.- Specified by:
slice
in classSlice
- Parameters:
offset
- the offset of the sub-slice within the parent slicelength
- the length of the sub-sliceisDeflatedZipEntry
- true if this is a deflated zip entryinflatedLengthHint
- the uncompressed size of a deflated zip entry, or -1 if unknown, or 0 of this is not a deflated zip entry.- Returns:
- the slice
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randomAccessReader
public RandomAccessReader randomAccessReader()
Read directly from FileChannel (slow path, but handles >2GB).- Specified by:
randomAccessReader
in classSlice
- Returns:
- the random access reader
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load
public byte[] load() throws java.io.IOException
Load the slice as a byte array.
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read
public java.nio.ByteBuffer read() throws java.io.IOException
Read the slice into aByteBuffer
(or memory-map the slice to aMappedByteBuffer
, ifClassGraph.enableMemoryMapping()
was called.)
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