com.fasterxml.aalto.in

Class Utf32Reader

java.lang.Object

java.io.Reader

com.fasterxml.aalto.in.Utf32Reader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class Utf32Reader
extends Reader

Since JDK does not come with UTF-32/UCS-4, let's implement a simple decoder to use.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	mBigEndian
protected byte[]	mBuffer
protected int	mByteCount Total read byte count; used for error reporting purposes
protected int	mCharCount Total read character count; used for error reporting purposes
protected ReaderConfig	mConfig
protected InputStream	mIn
protected int	mLength
protected int	mPtr
protected char	mSurrogate Although input is fine with full Unicode set, Java still uses 16-bit chars, so we may have to split high-order chars into surrogate pairs.

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
Utf32Reader(ReaderConfig cfg, InputStream in, byte[] buf, int ptr, int len, boolean isBigEndian)

Method Summary

Modifier and Type	Method and Description
void	close()
void	freeBuffers()
int	read() Although this method is implemented by the base class, AND it should never be called by Woodstox code, let's still implement it bit more efficiently just in case
int	read(char[] cbuf, int start, int len)
protected void	reportBounds(char[] cbuf, int start, int len)
protected void	reportStrangeStream()

Methods inherited from class java.io.Reader

mark, markSupported, read, read, ready, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

mConfig

protected final ReaderConfig mConfig

mIn

protected InputStream mIn

mBuffer

protected byte[] mBuffer

mPtr

protected int mPtr

mLength

protected int mLength

mBigEndian

protected final boolean mBigEndian

mSurrogate

protected char mSurrogate

Although input is fine with full Unicode set, Java still uses 16-bit chars, so we may have to split high-order chars into surrogate pairs.

mCharCount

protected int mCharCount

Total read character count; used for error reporting purposes

mByteCount

protected int mByteCount

Total read byte count; used for error reporting purposes

Constructor Detail

Utf32Reader

public Utf32Reader(ReaderConfig cfg,
                   InputStream in,
                   byte[] buf,
                   int ptr,
                   int len,
                   boolean isBigEndian)

Method Detail

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 Woodstox 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,
                int start,
                int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

freeBuffers

public final void freeBuffers()

reportBounds

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

Throws:

IOException

reportStrangeStream

protected void reportStrangeStream()
                            throws IOException

Throws:

IOException