R: Encode/decode data into/from base64 encoding

base64 {base64enc} | R Documentation

## Encode/decode data into/from base64 encoding

### Description

`base64encode` encodes a data into base64 encoding. The source can be a file, binary connection or a raw vector.

`base64decode` decodes a base64-encoded string into binary data. The source can be a string or a connection, the output is either a raw vector (`output=NULL`) or a binary connection.

### Usage

    base64encode(what, linewidth, newline)
    base64decode(what, output = NULL, file)

### Arguments

`what` | data to be encoded/decoded. For `base64encode` it can be a raw vector, text connection or file name. For `base64decode` it can be a string or a binary connection.
`linewidth` | if set, the output is split into lines with at most `linewidth` characters per line. Zero or `NA` denotes no limit and values 1 .. 3 are silently treated as 4 since that is the shortest valid line.
`newline` | only applicable if `linewidth` is set; if set (string), the result will be a single string with all lines joined using the `newline` string
`output` | if `NULL` then the output will be a raw vector with the decoded data, otherwise it must be either a filename (string) or a binary connection.
`file` | file name (string) for data to use as input instead of `what`. It is essentially just a shorthand for `base64decode(file(name))`. Only one of `what` and `file` can be specified.

### Value

`base64encode`: A character vector. If `linewith > 0` and `newline` is not set then it will consist of as many elements as there are lines. Otherwise it is a single string.

`base64decode`: If `output = NULL` then a raw vector with the decoded content, otherwise the number of bytes written into the connection.

### Author(s)

Simon Urbanek

### Examples

      base64encode(1:100)
      base64encode(1:100, 70)
      base64encode(1:100, 70, "\n")
      x <- charToRaw("the decoded content, otherwise the number of bytes")
      y <- base64decode(base64encode(x))
      stopifnot(identical(x, y))

[Package base64enc version 0.1-3 Index]