com.fasterxml.jackson.dataformat.csv.impl

Class UTF8Reader

java.lang.Object

java.io.Reader

com.fasterxml.jackson.dataformat.csv.impl.UTF8Reader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public final class UTF8Reader
extends Reader

Optimized Reader that reads UTF-8 encoded content from an input stream. In addition to doing (hopefully) optimal conversion, it can also take array of "pre-read" (leftover) bytes; this is necessary when preliminary stream/reader is trying to figure out underlying character encoding.

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt, byte[] buf, int ptr, int len)
UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt, InputStream in, boolean autoClose)
UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt, InputStream in, boolean autoClose, byte[] buf, int ptr, int len)

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	canModifyBuffer() Method that can be used to see if we can actually modify the underlying buffer.
void	close()
void	freeBuffers() This method should be called along with (or instead of) normal close.
protected InputStream	getStream()
int	read() Although this method is implemented by the base class, AND it should never be called by parser code, let's still implement it bit more efficiently just in case
int	read(char[] cbuf)
int	read(char[] cbuf, int start, int len)
protected int	readBytes() Method for reading as many bytes from the underlying stream as possible (that fit in the buffer), to the beginning of the buffer.
protected int	readBytesAt(int offset) Method for reading as many bytes from the underlying stream as possible (that fit in the buffer considering offset), to the specified offset.
protected void	reportBounds(char[] cbuf, int start, int len)
protected void	reportInvalidInitial(int mask, int offset)
protected void	reportInvalidOther(int mask, int offset)
protected void	reportStrangeStream()
protected void	reportUnexpectedEOF(int gotBytes, int needed)

Methods inherited from class java.io.Reader

mark, markSupported, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

UTF8Reader

public UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt,
          InputStream in,
          boolean autoClose,
          byte[] buf,
          int ptr,
          int len)

UTF8Reader

public UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt,
          byte[] buf,
          int ptr,
          int len)

UTF8Reader

public UTF8Reader(com.fasterxml.jackson.core.io.IOContext ctxt,
          InputStream in,
          boolean autoClose)

Method Detail

canModifyBuffer

protected final boolean canModifyBuffer()

Method that can be used to see if we can actually modify the underlying buffer. This is the case if we are managing the buffer, but not if it was just given to us.

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class Reader

Throws:

IOException

read

public int read()
         throws IOException

Although this method is implemented by the base class, AND it should never be called by parser code, let's still implement it bit more efficiently just in case

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf)
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf,
       int start,
       int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

getStream

protected final InputStream getStream()

readBytes

protected final int readBytes()
                       throws IOException

Method for reading as many bytes from the underlying stream as possible (that fit in the buffer), to the beginning of the buffer.

Throws:

IOException

readBytesAt

protected final int readBytesAt(int offset)
                         throws IOException

Method for reading as many bytes from the underlying stream as possible (that fit in the buffer considering offset), to the specified offset.

Returns:

Number of bytes read, if any; -1 to indicate none available (that is, end of input)

Throws:

IOException

freeBuffers

public final void freeBuffers()

This method should be called along with (or instead of) normal close. After calling this method, no further reads should be tried. Method will try to recycle read buffers (if any).

reportInvalidInitial

protected void reportInvalidInitial(int mask,
                        int offset)
                             throws IOException

Throws:

IOException

reportInvalidOther

protected void reportInvalidOther(int mask,
                      int offset)
                           throws IOException

Throws:

IOException

reportUnexpectedEOF

protected void reportUnexpectedEOF(int gotBytes,
                       int needed)
                            throws IOException

Throws:

IOException

reportBounds

protected void reportBounds(char[] cbuf,
                int start,
                int len)
                     throws IOException

Throws:

IOException

reportStrangeStream

protected void reportStrangeStream()
                            throws IOException

Throws:

IOException