copyFile: Copy a file using 'robocopy' on Windows and 'rsync' on...

In PredictiveEcology/reproducible: Enhance Reproducibility of R Code

Copy a file using robocopy on Windows and rsync on Linux/macOS

Description

This is replacement for file.copy, but for one file at a time. The additional feature is that it will use robocopy (on Windows) or rsync on Linux or Mac, if they exist. It will default back to file.copy if none of these exists. If there is a possibility that the file already exists, then this function should be very fast as it will do "update only", i.e., nothing.

Usage

copySingleFile(
  from = NULL,
  to = NULL,
  useRobocopy = TRUE,
  overwrite = TRUE,
  delDestination = FALSE,
  create = TRUE,
  silent = FALSE
)

copyFile(
  from = NULL,
  to = NULL,
  useRobocopy = TRUE,
  overwrite = TRUE,
  delDestination = FALSE,
  create = TRUE,
  silent = FALSE
)

Arguments

from	The source file.
to	The new file.
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. Default TRUE.
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 for robocopy and –delete for rsync.
create	Passed to checkPath.
silent	Should a progress be printed.

Value

This function is called for its side effect, i.e., a file is copied from to to.

Author(s)

Eliot McIntire and Alex Chubaty

Examples

tmpDirFrom <- file.path(tempdir(), "example_fileCopy_from")
tmpDirTo <- file.path(tempdir(), "example_fileCopy_to")
tmpFile1 <- tempfile("file1", tmpDirFrom, ".csv")
tmpFile2 <- tempfile("file2", tmpDirFrom, ".csv")
dir.create(tmpDirFrom, recursive = TRUE, showWarnings = FALSE)
dir.create(tmpDirTo, recursive = TRUE, showWarnings = FALSE)
f1 <- normalizePath(tmpFile1, mustWork = FALSE)
f2 <- normalizePath(tmpFile2, mustWork = FALSE)
t1 <- normalizePath(file.path(tmpDirTo, basename(tmpFile1)), mustWork = FALSE)
t2 <- normalizePath(file.path(tmpDirTo, basename(tmpFile2)), mustWork = FALSE)

write.csv(data.frame(a = 1:10, b = runif(10), c = letters[1:10]), f1)
write.csv(data.frame(c = 11:20, d = runif(10), e = letters[11:20]), f2)
copyFile(c(f1, f2), c(t1, t2))
file.exists(t1) ## TRUE
file.exists(t2) ## TRUE
identical(read.csv(f1), read.csv(f2)) ## FALSE
identical(read.csv(f1), read.csv(t1)) ## TRUE
identical(read.csv(f2), read.csv(t2)) ## TRUE

PredictiveEcology/reproducible documentation built on April 19, 2024, 7:23 p.m.