hera.util

Class IoUtils

java.lang.Object

hera.util.IoUtils

public class IoUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
IoUtils()

Method Summary

Modifier and Type	Method and Description
static byte[]	from(java.io.InputStream in) Read from in and return all bytes.
static java.lang.String	from(java.io.Reader reader) Read from reader and return string.
static byte[]	getChecksum(java.io.InputStream in) Calculate checksum.
static java.lang.String	getChecksumAsString(java.io.InputStream in) Calculate checksum as string.
static int	redirect(java.io.InputStream from, java.io.OutputStream to) Redirect from to to.
static int	redirect(java.io.Reader from, java.io.Writer to) Redirect from to to.
static int	stream(java.io.InputStream in, StreamConsumer consumer) Process streaming.
static void	tryFlush(java.lang.Object... flushable) Call #flush if possible.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

Constructor Detail

IoUtils

public IoUtils()

Method Detail

tryFlush

public static void tryFlush(java.lang.Object... flushable)

Call #flush if possible.

Call #flush if the element of flushables is next:

• Flushable

Parameters:

flushable - object instances to flush

stream

public static int stream(java.io.InputStream in,
                         StreamConsumer consumer)
                  throws java.lang.Exception

Process streaming.

Parameters:

in - InputStream

consumer - instance to use streaming

Returns:

read bytes

Throws:

java.io.IOException - If fail to read or process

java.lang.Exception

redirect

public static int redirect(java.io.InputStream from,
                           java.io.OutputStream to)
                    throws java.io.IOException

Redirect from to to.

Parameters:

from - InputStream to read

to - OutputStream to write

Returns:

the number of bytes to redirect

Throws:

java.io.IOException - Fail to read or write

redirect

public static int redirect(java.io.Reader from,
                           java.io.Writer to)
                    throws java.io.IOException

Redirect from to to.

Parameters:

from - Reader to read

to - Writer to write

Returns:

the number of bytes to redirect

Throws:

java.io.IOException - Fail to read or write

from

public static byte[] from(java.io.InputStream in)
                   throws java.io.IOException

Read from in and return all bytes.

Parameters:

in - InputStream to read

Returns:

read bytes

Throws:

java.io.IOException - Fail to read

from

public static java.lang.String from(java.io.Reader reader)
                             throws java.io.IOException

Read from reader and return string.

Parameters:

reader - Reader to read

Returns:

read string

Throws:

java.io.IOException - Fail to read

getChecksum

public static byte[] getChecksum(java.io.InputStream in)
                          throws java.io.IOException,
                                 java.security.NoSuchAlgorithmException

Calculate checksum.

Parameters:

in - InputStream containing content

Returns:

checksum

Throws:

java.io.IOException - Fail to read content

java.security.NoSuchAlgorithmException - No MD5 algorithm

getChecksumAsString

public static java.lang.String getChecksumAsString(java.io.InputStream in)
                                            throws java.io.IOException,
                                                   java.security.NoSuchAlgorithmException

Calculate checksum as string.

Parameters:

in - InputStream containing content

Returns:

checksum

Throws:

java.io.IOException - Fail to read content

java.security.NoSuchAlgorithmException - No MD5 algorithm