In contrast to base64 RFC3548, the 62nd character ('+')
is replaced with '-', the 63rd character ('/')
is replaced with '_'. Furthermore, the encoder does not
fill the string with trailing '='. The resulting encoded
strings comply to the regular expression pattern
'[A-Za-z0-9_-]' and thus are safe to use in URLs or for
file names.
For a small benchmark, see the vignette.
As of version 1.1, this package also ships with a simple base32 encoder/decoder suited to mangle file names on case insensitive file systems.
For the stable release, just install the latest version from CRAN:
install.packages("base64url")For the development version, use devtools:
devtools::install_github("mllg/base64url")