FileOutputStream: Class providing an output stream of bytes to a file

In HenrikBengtsson/R.io: [R] Class Library - File, connection and I/O classes

Description

Package: R.io
Class FileOutputStream

Object
~~|
~~+--OutputStream
~~~~~~~|
~~~~~~~+--FileOutputStream

Directly known subclasses:

public static class FileOutputStream
extends OutputStream

Class providing an output stream of bytes to a file.

Usage

FileOutputStream(file=NULL)

Arguments

file	A File object or a filename specifying which file to write to.

Fields and Methods

Methods:

	close	Flushes and closes the file output stream.
	finalize	Finalizes the stream by first closing it.
	write	Writes one or more bytes to the file output stream.

Methods inherited from OutputStream:
close, finalize, flush, write

Methods inherited from Object:
$, $<-, [[, [[<-, as.character, attach, attachLocally, clearCache, clone, detach, equals, extend, finalize, gc, getEnvironment, getFields, getInstanciationTime, getStaticInstance, hasField, hashCode, ll, load, objectSize, print, save

Author(s)

Henrik Bengtsson (http://www.braju.com/R/)

Examples

file <- File$createTempFile("file")

fout <- FileOutputStream(file)

# Writes the bytes 0,1,2,...,255,0,1 to the temporary file
bfr <- 0:257
write(fout, bfr)

close(fout)
cat("Wrote the bytes to ", getPath(file), ".\n", sep="")

cat("Length of the file is ", size(file), " bytes.\n", sep="")

cat("Reading the bytes from ", getPath(file), ".\n", sep="")
fin <- FileInputStream(file)
while((bfr <- read(fin, len=4096))[1] != -1)
  cat(formatC(bfr, width=3))
cat("\n")

close(fin)

# Deletes the temporary file
erase(file)

HenrikBengtsson/R.io documentation built on May 6, 2019, 11:54 p.m.