com.goldencode.p2j.xml

Class SaxReaderImpl.FileInputStreamWrapper

java.lang.Object

java.io.InputStream

com.goldencode.p2j.xml.SaxReaderImpl.FileInputStreamWrapper

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Enclosing class:

SaxReaderImpl

static class SaxReaderImpl.FileInputStreamWrapper
extends java.io.InputStream

Special wrapper to wrap read from file in lazy mode. It's means that first try to read will check if file is available.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	fileName File name.
private boolean	isStarted Lazy initialization flag.
private long	mark The marked position in the stream.
private Stream	stream Buffered input Stream.

Constructor Summary

Constructors

Constructor and Description
FileInputStreamWrapper(java.lang.String source) Constructor accepting a file name, which will read after first call.

Method Summary

Modifier and Type	Method and Description
int	available() Obtains an estimate of the number of bytes that can be read from this stream without blocking.
void	close() Close input stream.
private void	init(boolean canWrite) Initialization method which creates stream wrapper.
void	mark(int readlimit) Mark the current position in the stream.
boolean	markSupported() Tests if this stream supports the mark mode.
int	read() Reads the next byte of data from the input stream.
int	read(byte[] array, int off, int len) Read a chunk of bytes from the current read position in the stream to the offset calculated by given length or to the EOF, whichever comes first.
void	reset() Resets the input stream to begin reading from the first character of this input stream's underlying buffer.

Methods inherited from class java.io.InputStream

read, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fileName

private final java.lang.String fileName

File name.

isStarted

private volatile boolean isStarted

Lazy initialization flag.

stream

private Stream stream

Buffered input Stream.

mark

private long mark

The marked position in the stream.

Constructor Detail

FileInputStreamWrapper

FileInputStreamWrapper(java.lang.String source)

Constructor accepting a file name, which will read after first call.

Parameters:

source - A file name.

Method Detail

read

public int read()
         throws java.io.IOException

Reads the next byte of data from the input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned.

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] array,
                int off,
                int len)
         throws java.io.IOException

Read a chunk of bytes from the current read position in the stream to the offset calculated by given length or to the EOF, whichever comes first. The EOF character is not returned.

Overrides:

read in class java.io.InputStream

Parameters:

array - The array in which to save bytes.

off - The offset into the array at which to start saving bytes.

len - The maximum number of bytes to read.

Returns:

The number of bytes read or -1 if EOF has been reached). The number of bytes read will be the smaller of the len parameter or the actual bytes left before the EOF.

Throws:

java.io.IOException - If an I/O error occurs.

available

public int available()
              throws java.io.IOException

Obtains an estimate of the number of bytes that can be read from this stream without blocking. This number is not reliable in an absolute sense, but it does specify a minimum that can be used.

Overrides:

available in class java.io.InputStream

Returns:

The minimum number of bytes immediately available.

Throws:

java.io.IOException

reset

public void reset()
           throws java.io.IOException

Resets the input stream to begin reading from the first character of this input stream's underlying buffer.

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException

mark

public void mark(int readlimit)

Mark the current position in the stream.

Overrides:

mark in class java.io.InputStream

Parameters:

readlimit - This argument is not used.

markSupported

public boolean markSupported()

Tests if this stream supports the mark mode.

Overrides:

markSupported in class java.io.InputStream

Returns:

Alwaystrue.

init

private void init(boolean canWrite)
           throws java.io.IOException

Initialization method which creates stream wrapper.

Parameters:

canWrite - if true than file will open in read/write mode, otherwise only in read mode.

Throws:

java.io.IOException - In case of I/O errors.

close

public void close()
           throws java.io.IOException

Close input stream.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException