Class RandomAccessFileOrArray
- java.lang.Object
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- com.gitlab.pdftk_java.com.lowagie.text.pdf.RandomAccessFileOrArray
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- All Implemented Interfaces:
java.io.DataInput
public class RandomAccessFileOrArray extends java.lang.Object implements java.io.DataInput
An implementation of a RandomAccessFile for input only that accepts a file or a byte array as data source.
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Field Summary
Fields Modifier and Type Field Description (package private) byte[]
arrayIn
(package private) int
arrayInPtr
private byte
back
(package private) java.lang.String
filename
private boolean
isBack
(package private) java.io.RandomAccessFile
rf
private int
startOffset
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Constructor Summary
Constructors Constructor Description RandomAccessFileOrArray(byte[] arrayIn)
RandomAccessFileOrArray(RandomAccessFileOrArray file)
RandomAccessFileOrArray(java.io.InputStream is)
RandomAccessFileOrArray(java.lang.String filename)
RandomAccessFileOrArray(java.lang.String filename, boolean forceRead)
RandomAccessFileOrArray(java.net.URL url)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clearBack()
void
close()
int
getBack()
int
getFilePointer()
int
getStartOffset()
private void
inputStreamToArray(java.io.InputStream is)
protected void
insureOpen()
boolean
isBack()
boolean
isOpen()
int
length()
int
popBack()
void
pushBack(byte b)
int
read()
int
read(byte[] b)
int
read(byte[] bb, int off, int len)
boolean
readBoolean()
byte
readByte()
char
readChar()
char
readCharLE()
Reads a Unicode character from this stream in little-endian order.double
readDouble()
double
readDoubleLE()
float
readFloat()
float
readFloatLE()
void
readFully(byte[] bb)
void
readFully(byte[] bb, int off, int len)
int
readInt()
int
readIntLE()
Reads a signed 32-bit integer from this stream in little-endian order.java.lang.String
readLine()
long
readLong()
long
readLongLE()
short
readShort()
short
readShortLE()
Reads a signed 16-bit number from this stream in little-endian order.int
readUnsignedByte()
long
readUnsignedInt()
Reads an unsigned 32-bit integer from this stream.long
readUnsignedIntLE()
int
readUnsignedShort()
int
readUnsignedShortLE()
Reads an unsigned 16-bit number from this stream in little-endian order.java.lang.String
readUTF()
void
reOpen()
void
seek(int pos)
void
seek(long pos)
void
setStartOffset(int startOffset)
long
skip(long n)
int
skipBytes(int nn)
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Constructor Detail
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RandomAccessFileOrArray
public RandomAccessFileOrArray(java.lang.String filename) throws java.io.IOException
- Throws:
java.io.IOException
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RandomAccessFileOrArray
public RandomAccessFileOrArray(java.lang.String filename, boolean forceRead) throws java.io.IOException
- Throws:
java.io.IOException
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RandomAccessFileOrArray
public RandomAccessFileOrArray(java.net.URL url) throws java.io.IOException
- Throws:
java.io.IOException
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RandomAccessFileOrArray
public RandomAccessFileOrArray(java.io.InputStream is) throws java.io.IOException
- Throws:
java.io.IOException
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RandomAccessFileOrArray
public RandomAccessFileOrArray(byte[] arrayIn)
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RandomAccessFileOrArray
public RandomAccessFileOrArray(RandomAccessFileOrArray file) throws java.io.IOException
- Throws:
java.io.IOException
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Method Detail
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inputStreamToArray
private void inputStreamToArray(java.io.InputStream is) throws java.io.IOException
- Throws:
java.io.IOException
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pushBack
public void pushBack(byte b) throws java.io.IOException
- Throws:
java.io.IOException
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popBack
public int popBack()
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isBack
public boolean isBack()
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getBack
public int getBack()
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clearBack
public void clearBack()
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read
public int read() throws java.io.IOException
- Throws:
java.io.IOException
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read
public int read(byte[] bb, int off, int len) throws java.io.IOException
- Throws:
java.io.IOException
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read
public int read(byte[] b) throws java.io.IOException
- Throws:
java.io.IOException
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readFully
public void readFully(byte[] bb, int off, int len) throws java.io.IOException
- Specified by:
readFully
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readFully
public void readFully(byte[] bb) throws java.io.IOException
- Specified by:
readFully
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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reOpen
public void reOpen() throws java.io.IOException
- Throws:
java.io.IOException
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insureOpen
protected void insureOpen() throws java.io.IOException
- Throws:
java.io.IOException
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isOpen
public boolean isOpen()
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close
public void close() throws java.io.IOException
- Throws:
java.io.IOException
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length
public int length() throws java.io.IOException
- Throws:
java.io.IOException
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getFilePointer
public int getFilePointer() throws java.io.IOException
- Throws:
java.io.IOException
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seek
public void seek(int pos) throws java.io.IOException
- Throws:
java.io.IOException
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seek
public void seek(long pos) throws java.io.IOException
- Throws:
java.io.IOException
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skipBytes
public int skipBytes(int nn) throws java.io.IOException
- Specified by:
skipBytes
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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skip
public long skip(long n) throws java.io.IOException
- Throws:
java.io.IOException
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getStartOffset
public int getStartOffset()
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setStartOffset
public void setStartOffset(int startOffset) throws java.io.IOException
- Throws:
java.io.IOException
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readBoolean
public boolean readBoolean() throws java.io.IOException
- Specified by:
readBoolean
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readByte
public byte readByte() throws java.io.IOException
- Specified by:
readByte
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readUnsignedByte
public int readUnsignedByte() throws java.io.IOException
- Specified by:
readUnsignedByte
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readShort
public short readShort() throws java.io.IOException
- Specified by:
readShort
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readShortLE
public final short readShortLE() throws java.io.IOException
Reads a signed 16-bit number from this stream in little-endian order. The method reads two bytes from this stream, starting at the current stream pointer. If the two bytes read, in order, areb1
andb2
, where each of the two values is between0
and255
, inclusive, then the result is equal to:(short)((b2 << 8) | b1)
This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.
- Returns:
- the next two bytes of this stream, interpreted as a signed 16-bit number.
- Throws:
java.io.EOFException
- if this stream reaches the end before reading two bytes.java.io.IOException
- if an I/O error occurs.
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readUnsignedShort
public int readUnsignedShort() throws java.io.IOException
- Specified by:
readUnsignedShort
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readUnsignedShortLE
public final int readUnsignedShortLE() throws java.io.IOException
Reads an unsigned 16-bit number from this stream in little-endian order. This method reads two bytes from the stream, starting at the current stream pointer. If the bytes read, in order, areb1
andb2
, where0 <= b1, b2 <= 255
, then the result is equal to:(b2 << 8) | b1
This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.
- Returns:
- the next two bytes of this stream, interpreted as an unsigned 16-bit integer.
- Throws:
java.io.EOFException
- if this stream reaches the end before reading two bytes.java.io.IOException
- if an I/O error occurs.
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readChar
public char readChar() throws java.io.IOException
- Specified by:
readChar
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readCharLE
public final char readCharLE() throws java.io.IOException
Reads a Unicode character from this stream in little-endian order. This method reads two bytes from the stream, starting at the current stream pointer. If the bytes read, in order, areb1
andb2
, where0 <= b1, b2 <= 255
, then the result is equal to:(char)((b2 << 8) | b1)
This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.
- Returns:
- the next two bytes of this stream as a Unicode character.
- Throws:
java.io.EOFException
- if this stream reaches the end before reading two bytes.java.io.IOException
- if an I/O error occurs.
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readInt
public int readInt() throws java.io.IOException
- Specified by:
readInt
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readIntLE
public final int readIntLE() throws java.io.IOException
Reads a signed 32-bit integer from this stream in little-endian order. This method reads 4 bytes from the stream, starting at the current stream pointer. If the bytes read, in order, areb1
,b2
,b3
, andb4
, where0 <= b1, b2, b3, b4 <= 255
, then the result is equal to:(b4 << 24) | (b3 << 16) + (b2 << 8) + b1
This method blocks until the four bytes are read, the end of the stream is detected, or an exception is thrown.
- Returns:
- the next four bytes of this stream, interpreted as an
int
. - Throws:
java.io.EOFException
- if this stream reaches the end before reading four bytes.java.io.IOException
- if an I/O error occurs.
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readUnsignedInt
public final long readUnsignedInt() throws java.io.IOException
Reads an unsigned 32-bit integer from this stream. This method reads 4 bytes from the stream, starting at the current stream pointer. If the bytes read, in order, areb1
,b2
,b3
, andb4
, where0 <= b1, b2, b3, b4 <= 255
, then the result is equal to:(b1 << 24) | (b2 << 16) + (b3 << 8) + b4
This method blocks until the four bytes are read, the end of the stream is detected, or an exception is thrown.
- Returns:
- the next four bytes of this stream, interpreted as a
long
. - Throws:
java.io.EOFException
- if this stream reaches the end before reading four bytes.java.io.IOException
- if an I/O error occurs.
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readUnsignedIntLE
public final long readUnsignedIntLE() throws java.io.IOException
- Throws:
java.io.IOException
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readLong
public long readLong() throws java.io.IOException
- Specified by:
readLong
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readLongLE
public final long readLongLE() throws java.io.IOException
- Throws:
java.io.IOException
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readFloat
public float readFloat() throws java.io.IOException
- Specified by:
readFloat
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readFloatLE
public final float readFloatLE() throws java.io.IOException
- Throws:
java.io.IOException
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readDouble
public double readDouble() throws java.io.IOException
- Specified by:
readDouble
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readDoubleLE
public final double readDoubleLE() throws java.io.IOException
- Throws:
java.io.IOException
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readLine
public java.lang.String readLine() throws java.io.IOException
- Specified by:
readLine
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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readUTF
public java.lang.String readUTF() throws java.io.IOException
- Specified by:
readUTF
in interfacejava.io.DataInput
- Throws:
java.io.IOException
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