gzip

From R.utils v1.5.8 by Henrik Bengtsson

Gzip/Gunzip a file

Gzip/Gunzip a file.

Keywords: file, programming

Usage

## S3 method for class 'default':
gzip(filename, destname=sprintf("\%s.gz", filename), overwrite=FALSE, remove=TRUE, BFR.SIZE=1e+07, ...)

Arguments

filename: Pathname of input file.
destname: Pathname of output file.
overwrite: If the output file already exists, then if overwrite is TRUE the file is silently overwritting, otherwise an exception is thrown.
remove: If TRUE, the input file is removed afterward, otherwise not.
BFR.SIZE: The number of bytes read in each chunk.
...: Not used.

Details

Internally gzfile() (see connections) is used to read (write) chunks to (from) the gzip file. If the process is interrupted before completed, the partially written output file is automatically removed.

Value

Returns the number of (input) bytes read.

Examples

cat(file="foo.txt", "Hello world!")
  gzip("foo.txt")
  print(file.info("foo.txt.gz"))
  gunzip("foo.txt.gz")
  print(file.info("foo.txt"))
  file.remove("foo.txt")

Documentation reproduced from package R.utils, version 1.5.8, License: LGPL (>= 2.1)

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