copyDir: Copy a directory using Robocopy on Windows and rsync on linux

In PredictiveEcology/lazyR: Create Lazy Load Databases for R Objects

Description

This will copy an entire directory using the faster copy options in Windows and Linux. The function will default to file.copy (which is slow). For lazyR databases, this can be useful for copying everything to a new computer, a network location etc.

Usage

copyDir(fromDir = NULL, toDir = NULL, useRobocopy = TRUE,
  overwrite = TRUE, delDestination = FALSE, create = TRUE,
  silent = FALSE)

Arguments

fromDir	The source lazyDir
toDir	The new lazyDir
useRobocopy	For Windows, this will use a system call to Robocopy which appears to be much faster than the internal file.copy function. Uses /MIR flag.
overwrite	Passed to file.copy
delDestination	Logical, whether the destination should have any files deleted, if they don't exist in the source. This is /purge
create	Passed to checkLazyDir
silent	Should a progress be printed

Author(s)

Eliot McIntire

Examples

## Not run: 
library(raster)
library(rgdal)
# make some objects
obj1 <- 1:10
obj2 <- 11:20
r <- raster::raster(matrix(1:9, ncol=3))
raster::writeRaster(r, file.path(tempdir(),"r.tif"), overwrite=TRUE)
raster::writeRaster(r, file.path(tempdir(),"ras.tif"), overwrite=TRUE)
rm(r, ras)
r <- raster::raster(file.path(tempdir(),"r.tif"))
ras <- raster::raster(file.path(tempdir(),"ras.tif"))

# identify a new and old lazyLoad db
fromDir <- file.path(tempdir(), "old")
toDir <- file.path(tempdir(), "new")
lazySave(obj1, r, ras, obj2, lazyDir=fromDir, overwrite=TRUE)

# copy to new lazyDir location
copyDir(fromDir, toDir, create=TRUE)

# remove the objects in memory and the old lazyLoad db
rm(obj1, obj2, r, ras)
unlink(fromDir, recursive=TRUE)

lazyLoad2(lazyDir=toDir) # Objects should be visible after this
ls()
unlink(toDir, recursive=TRUE)

## End(Not run)

PredictiveEcology/lazyR documentation built on May 8, 2019, 3:10 p.m.