Package com.itextpdf.io.source
Class IndependentRandomAccessSource
- java.lang.Object
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- com.itextpdf.io.source.IndependentRandomAccessSource
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- All Implemented Interfaces:
IRandomAccessSource
public class IndependentRandomAccessSource extends java.lang.Object implements IRandomAccessSource
A RandomAccessSource that is wraps another RandomAccessSource but does not propagate close(). This is useful when passing a RandomAccessSource to a method that would normally close the source.
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Field Summary
Fields Modifier and Type Field Description private IRandomAccessSource
source
The source
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Constructor Summary
Constructors Constructor Description IndependentRandomAccessSource(IRandomAccessSource source)
Constructs a new IndependentRandomAccessSource object
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Does nothing - the underlying source is not closedint
get(long position)
Gets a byte at the specified positionint
get(long position, byte[] bytes, int off, int len)
Read an array of bytes of specified length from the specified position of source to the buffer applying the offset.long
length()
Gets the length of the source
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Field Detail
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source
private final IRandomAccessSource source
The source
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Constructor Detail
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IndependentRandomAccessSource
public IndependentRandomAccessSource(IRandomAccessSource source)
Constructs a new IndependentRandomAccessSource object- Parameters:
source
- the source
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Method Detail
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get
public int get(long position) throws java.io.IOException
Gets a byte at the specified position- Specified by:
get
in interfaceIRandomAccessSource
- Parameters:
position
- byte position- Returns:
- the byte, or -1 if EOF is reached
- Throws:
java.io.IOException
- in case of any reading error.
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get
public int get(long position, byte[] bytes, int off, int len) throws java.io.IOException
Read an array of bytes of specified length from the specified position of source to the buffer applying the offset. If the number of bytes requested cannot be read, all the possible bytes will be read to the buffer, and the number of actually read bytes will be returned.- Specified by:
get
in interfaceIRandomAccessSource
- Parameters:
position
- the position in the RandomAccessSource to read frombytes
- output bufferoff
- offset into the output buffer where results will be placedlen
- the number of bytes to read- Returns:
- the number of bytes actually read, or -1 if the file is at EOF
- Throws:
java.io.IOException
- in case of any I/O error.
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length
public long length()
Gets the length of the source- Specified by:
length
in interfaceIRandomAccessSource
- Returns:
- the length of this source
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close
public void close() throws java.io.IOException
Does nothing - the underlying source is not closed- Specified by:
close
in interfaceIRandomAccessSource
- Throws:
java.io.IOException
- in case of any reading error.
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