[R-pkg-devel] how to prevent a small package from yielding a large installed size?

Ivan Krylov kry|ov@r00t @end|ng |rom gm@||@com
Mon Jun 15 19:24:55 CEST 2020

On Mon, 15 Jun 2020 12:52:20 -0400
Duncan Murdoch <murdoch.duncan using gmail.com> wrote:

> maybe someone else can suggest how to read an object from 
> the .rdb file using R code.  Internally R uses C code for this.

This function seems to work for me:

# filename: the .rdb file
# offset, size: the pair of values from the .rdx
# type: 'gzip' if $compressed is TRUE, 'bzip2' for 2, 'xz' for 3
readRDB <- function(filename, offset, size, type = 'gzip') {
	f <- file(filename, 'rb')
	seek(f, offset + 4)
	unserialize(memDecompress(readBin(f, 'raw', size - 4), type))

Best regards,

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