miniCRAN (version 0.2.12)

checkVersions: Check for previous versions of packages in a miniCRAN repository.

Description

Checks for previous versions, and returns the file paths for packages with multiple versions. You can subsequently decide which version to keep.

Usage

checkVersions(pkgs = NULL, path = NULL, type = "source",
  Rversion = R.version)

Arguments

pkgs

Character vector of packages to be installed. If not provided, checks all files for multiple package versions.

path

The local path to the directory where the miniCRAN repo resides.

type

character, indicating the type of package to download and install. See install.packages().

Rversion

Version of R (only used if type is not source.) Defaults to R.version, but this can be specified as any of the following formats:

• a character string with the two digit R version, e.g. "3.1"

• a list with components major and minor

• the result of getRversion()

• the result of R.version()

Value

Returns invisibly the file paths to packages with multiple versions for removal.

See Also

Other update repo functions: addOldPackage, addPackage, makeRepo, updatePackages

Examples

# NOT RUN {
### `checkVersions` and `add.packages.miniCRAN` require an existing miniCRAN repo

# Specify list of packages to download
revolution <- c(CRAN = getOption("miniCRAN.mran"))
pkgs <- c("foreach")
pkgTypes <- c("source", "win.binary")

pdb <- cranJuly2014

# }
# NOT RUN {
  pdb <- pkgAvail(repos = revolution, type = "source")
# }
# NOT RUN {
pkgList <- pkgDep(pkgs, availPkgs = pdb, repos = revolution, type = "source", suggests = FALSE)
pkgList

# }
# NOT RUN {
  # Create temporary folder for miniCRAN
  dir.create(pth <- file.path(tempdir(), "miniCRAN"))

  # Make repo for source and win.binary
  makeRepo(pkgList, path = pth, repos = revolution, type = pkgTypes)

  # Add other versions of a package (and assume these were added previously)
  oldVers <- data.frame(package = c("foreach", "codetools", "iterators"),
                        version = c("1.4.0", "0.2-7", "1.0.5"),
                        stringsAsFactors = FALSE)
  pkgs <- oldVers$package
  addOldPackage(pkgs, path = pth, vers = oldVers$version, repos = revolution, type = "source")
  # NOTE: older binary versions would need to be build from source

  # List package versions in the miniCRAN repo (produces warning about duplicates)
  pkgVersionsSrc <- checkVersions(pkgs, path = pth, type = "source")
  pkgVersionsBin <- checkVersions(pkgs, path = pth, type = "win.binary")

  # After inspecting package versions, remove old versions
  basename(pkgVersionsSrc) # "foreach_1.4.0.tar.gz"  "foreach_1.4.2.tar.gz"
  basename(pkgVersionsBin) # "foreach_1.4.0.zip"     "foreach_1.4.2.zip"
  file.remove(c(pkgVersionsSrc[1], pkgVersionsBin[1]))

  # Rebuild package index after adding/removing files
  updateRepoIndex(pth, type = pkgTypes, Rversion = R.version)

  pkgAvail(pth, type = "source")

  # Add new packages (from CRAN) to the miniCRAN repo
  addPackage("Matrix", path = pth, repos = revolution, type = pkgTypes)

  # Delete temporary folder
  unlink(pth, recursive = TRUE)
# }