I would like to create a zip archive from R and you need maximum compatibility between platforms, so I would prefer not to use the command system("zip").
Inside utils there is zip.file.extract(aka unzip) that uses [a lot] of c code obtained from zlib 1.1.3 in a file called dounzip.c. I could not find similar possibilities for creating zip files.
It is also difficult to create a specific google request for "cran create zip" or equivalent!
Also, tar will not be enough, I need to create a zip to use as input for a different toolbox other than R.
Would I appreciate any pointers?
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