copyFile
From R.utils v1.32.4
by Henrik Bengtsson
Copies a file atomically
Copies a file atomically, by first copying to a temporary file and then renaming that file.
- Keywords
- internal
Usage
## S3 method for class 'default':
copyFile(srcPathname, destPathname, skip=FALSE, overwrite=FALSE, ..., validate=TRUE,
verbose=FALSE)
Arguments
- srcPathname
- The source file to be copied.
- destPathname
- The destination file to be created.
- skip, overwrite
- If a destination file does not exist, these
arguments have no effect.
If such a file exists and
skip
isTRUE
, then no copying is attempted and - ...
- Additional named arguments passed to
file.copy
(). Non-named or unknown arguments are ignored. - validate
- If
TRUE
, validation of the copied file is applied, otherwise not. - verbose
- See
Verbose
.
Details
If the source file does not exists (or is not a file), then an informative exception is thrown.
If the source and destination pathnames are the same, it is not safe to copy (which can lead to either corrupt or lost files) and an informative exception is thrown.
If (and only if) the file is successfully copied and argument
validate
is TRUE
, then this method also asserts that the
file size of the destination matches that of the source, otherwise
an informative exception is thrown.
Value
- Returns a
logical
indicating whether a successful file copy was completed or not, or equivalently. In other words,TRUE
is returned if the file was succesfully copied, andFALSE
if not. If an error occurs, an informative exception is thrown. If the error occurs while renaming the temporary file to the final name, the temporary file will remain in the destination directory.
See Also
file.copy()
.
Community examples
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