getFilename.Arguments: Gets and validates a filename
Description
Gets and validates a filename.Usage
Arguments$getFilename(filename, nchar=c(1, 128), class=c("safe"), .name=NULL, .type="filename", ...)Arguments
nchar
An integer vector of length two specifying the range
of valid filename lengths. class
A character string specifying the class of valid
filenames. .name
The name of the argument validated.
Value
- Returns a
character string if filename is valid,
otherwise an exception is thrown.
synopsis
getFilename.Arguments(static, filename, nchar=c(1, 128), class=c("safe"), .name=NULL, .type="filename", ...)Details
When argument class="safe", the following 86 ASCII characters
are allowed in filenames:
#$ @ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_ (31)
`abcdefghijklmnopqrstuvwxyz{|}~ (31)
This class of filenames has been extensively tested on for
cross-platform support on Microsoft Windows, OSX and various
Unix flavors.References
[1] Microsoft, Naming Files, Paths, and Namespaces (Section 'Windows Naming Conventions'), 2012. http://msdn.microsoft.com/en-us/library/aa365247.aspx#naming_conventions.