R.utils (version 2.12.3)

Arguments$getFilename: Gets and validates a filename

Description

Gets and validates a filename.

Usage

## Static method (use this):
## Arguments$getFilename(filename, nchar=c(1, 128), class=c("safe"), .name=NULL,
##   .type="filename", ...)
## Don't use the below:
# S3 method for Arguments
getFilename(static, filename, nchar=c(1, 128), class=c("safe"), .name=NULL,
  .type="filename", ...)

Value

Returns a character string if filename is valid, otherwise an exception is thrown.

Arguments

filename

A character string.

nchar

An integer vector of length two specifying the range of valid filename lengths.

class

A character string specifying the class of valid filenames.

.name

The name of the argument validated.

.type

Not used.

...

Not used.

Missing values

If filename is a missing value, then an exception is thrown.

Author

Henrik Bengtsson

Details

When argument class="safe", the following 86 ASCII characters are allowed in filenames:

     #$
    @ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_  (31)
    `abcdefghijklmnopqrstuvwxyz{|}~  (31)
  

This class of filenames has been extensively tested on for cross-platform support on Microsoft Windows, macOS, and various Unix flavors.

References

[1] Microsoft, Naming Files, Paths, and Namespaces, 2018. https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file.

See Also

For more information see Arguments.