libcore.util

Class CountingOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

libcore.util.CountingOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class CountingOutputStream
extends FilterOutputStream

An output stream that keeps count of the number of bytes written to it. Useful when we need to make decisions based on the size of the output, such as deciding what sort of metadata to writes to zip files.

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
CountingOutputStream(OutputStream out) Constructs a new FilterOutputStream with out as its target stream.

Method Summary

Modifier and Type	Method and Description
long	getCount()
void	write(byte[] buffer, int offset, int length) Writes count bytes from the byte array buffer starting at offset to the target stream.
void	write(int oneByte) Writes one byte to the target stream.

Methods inherited from class java.io.FilterOutputStream

close, flush

Methods inherited from class java.io.OutputStream

nullOutputStream, write

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingOutputStream

public CountingOutputStream(OutputStream out)

Constructs a new FilterOutputStream with out as its target stream.

Parameters:

out - the target stream that this stream writes to.

Method Detail

write

public void write(byte[] buffer,
                  int offset,
                  int length)
           throws IOException

Description copied from class: FilterOutputStream

Writes count bytes from the byte array buffer starting at offset to the target stream.

Overrides:

write in class FilterOutputStream

Parameters:

buffer - the buffer to write.

offset - the index of the first byte in buffer to write.

length - the number of bytes in buffer to write.

Throws:

IOException - if an I/O error occurs while writing to this stream.

write

public void write(int oneByte)
           throws IOException

Description copied from class: FilterOutputStream

Writes one byte to the target stream. Only the low order byte of the integer oneByte is written.

Overrides:

write in class FilterOutputStream

Parameters:

oneByte - the byte to be written.

Throws:

IOException - if an I/O error occurs while writing to this stream.

getCount

public long getCount()