Merge pull request #377 from kimsjune/add_archive_support

Add archive support

packages/archive/install

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+#!/bin/bash
+
+set -x
+set -e
+
+apt-get update -qq
+apt-get install libarchive-dev
+

packages/archive/test.R

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+options(download.file.method="curl")
+install.packages("archive", repos = "https://cran.rstudio.com")
+library(archive)
+
+
+## https://archive.r-lib.org/reference/archive_write_files.html
+
+# write some files to a directory
+d <- tempfile()
+dir.create(d)
+old <- setwd(d)
+
+write.csv(iris, file.path(d, "iris.csv"))
+write.csv(mtcars, file.path(d, "mtcars.csv"))
+write.csv(airquality, file.path(d, "airquality.csv"))
+
+# Add some to a new archive
+a <- archive_write_files("data.tar.gz", c("iris.csv", "mtcars.csv"))
+setwd(old)
+a
+
+# Add all files in a directory
+a <- archive_write_dir("data.zip", d)
+a
+
+unlink("data.zip")