Package org.verapdf.cos.filters
Class COSFilterASCIIHexDecode
- java.lang.Object
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- java.io.InputStream
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- org.verapdf.as.io.ASInputStream
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- org.verapdf.as.filters.ASInFilter
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- org.verapdf.as.filters.io.ASBufferedInFilter
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- org.verapdf.cos.filters.COSFilterASCIIHexDecode
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- All Implemented Interfaces:
Closeable
,AutoCloseable
public class COSFilterASCIIHexDecode extends ASBufferedInFilter
Filter for ASCIIHex data decoding.- Author:
- Timur Kamalov
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Field Summary
Fields Modifier and Type Field Description static byte
ER
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Fields inherited from class org.verapdf.as.filters.io.ASBufferedInFilter
BF_BUFFER_SIZE, buffer, START_BUFFER_SIZE
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Fields inherited from class org.verapdf.as.io.ASInputStream
isClosed, isSourceClosed, resourceUsers
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Constructor Summary
Constructors Constructor Description COSFilterASCIIHexDecode(ASInputStream stream)
Constructor from encoded stream.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static byte
decodeLoHex(byte val)
Converts char byte to it's hex value, e.g.int
read(byte[] buffer, int size)
Reads up to size bytes of ASCII Hex decoded data into buffer.-
Methods inherited from class org.verapdf.as.filters.io.ASBufferedInFilter
addToBuffer, bufferPop, bufferPopArray, bufferSize, closeResource, concatenate, feedBuffer, getBufferBegin, getBufferCapacity, getBufferEnd, getReadCounter, getStream, getStreamUntilToken, initialize, isEOF, peek, peek, processBuffer, read, readByte, reset, resetReadCounter, skip, unread, unread
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Methods inherited from class org.verapdf.as.filters.ASInFilter
close, decrementResourceUsers, getInputStream, incrementResourceUsers, read, setInputStream
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Methods inherited from class org.verapdf.as.io.ASInputStream
createStreamFromStream
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Methods inherited from class java.io.InputStream
available, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, skip, transferTo
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Field Detail
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ER
public static final byte ER
- See Also:
- Constant Field Values
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Constructor Detail
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COSFilterASCIIHexDecode
public COSFilterASCIIHexDecode(ASInputStream stream) throws IOException
Constructor from encoded stream.- Parameters:
stream
- is ASCII Hex encoded stream.- Throws:
IOException
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Method Detail
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read
public int read(byte[] buffer, int size) throws IOException
Reads up to size bytes of ASCII Hex decoded data into buffer.- Overrides:
read
in classASBufferedInFilter
- Parameters:
buffer
- is byte array where decoded data will be read.size
- is maximal amount of decoded bytes.- Returns:
- amount of actually read bytes.
- Throws:
IOException
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decodeLoHex
public static byte decodeLoHex(byte val)
Converts char byte to it's hex value, e.g. '1' -> 1 and 'A' -> 10.- Parameters:
val
- is character that should be hexadecimal digit.- Returns:
- actual value for this character or 127 if character is not a valid hex digit.
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