com.adaptris.util.stream

Class UnicodeDetectingInputStream

java.lang.Object

java.io.InputStream

com.adaptris.util.stream.UnicodeDetectingInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class UnicodeDetectingInputStream
extends java.io.InputStream

Workaround for a Sun JVM bug whereby it does not handle streams that have a UTF-8 BOM.

This is recorded as This Sun JVM bug.

This inputstream will recognize unicode BOM marks and will skip bytes if getEncoding() method is called before any of the read(...) methods. The source is taken from here with minor changes.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	UTF_16_BE
static java.lang.String	UTF_16_LE
static java.lang.String	UTF_32_BE
static java.lang.String	UTF_32_LE
static java.lang.String	UTF_8
static byte[]	UTF16BE_BOM
static byte[]	UTF16LE_BOM
static byte[]	UTF32BE_BOM
static byte[]	UTF32LE_BOM
static byte[]	UTF8_BOM

Constructor Summary

Constructors

Constructor and Description
UnicodeDetectingInputStream(java.io.InputStream in, java.lang.String defaultEnc)

Method Summary

Modifier and Type	Method and Description
void	close()
java.lang.String	getDefaultEncoding()
java.lang.String	getEncoding()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)

Methods inherited from class java.io.InputStream

available, mark, markSupported, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

UTF_16_LE

public static final java.lang.String UTF_16_LE

See Also:

Constant Field Values

UTF_16_BE

public static final java.lang.String UTF_16_BE

See Also:

Constant Field Values

UTF_8

public static final java.lang.String UTF_8

See Also:

Constant Field Values

UTF_32_LE

public static final java.lang.String UTF_32_LE

See Also:

Constant Field Values

UTF_32_BE

public static final java.lang.String UTF_32_BE

See Also:

Constant Field Values

UTF8_BOM

public static final byte[] UTF8_BOM

UTF16LE_BOM

public static final byte[] UTF16LE_BOM

UTF16BE_BOM

public static final byte[] UTF16BE_BOM

UTF32LE_BOM

public static final byte[] UTF32LE_BOM

UTF32BE_BOM

public static final byte[] UTF32BE_BOM

Constructor Detail

UnicodeDetectingInputStream

public UnicodeDetectingInputStream(java.io.InputStream in,
                                   java.lang.String defaultEnc)

Method Detail

getDefaultEncoding

public java.lang.String getDefaultEncoding()

getEncoding

public java.lang.String getEncoding()

close

public void close()
           throws java.io.IOException

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

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] b)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException