is_compressed: is_compressed
Description
Helper function for is_rdata, checks if the file is a
compressed (gzip) file. Does not (yet) check for bzip2 or xz compression.
Usage
is_compressed(filename, magic.number = as.raw(c("0x1f", "0x8b")))Value
boolean, TRUE if the file is compressed
Arguments
- filename
The filename of the file to test for magic compression codes
- magic.number
The magic numbers in as a vector of strings
with the hexadecimal numbers (e.g. "0x1f")