A root is defined as a directory that contains a regular file whose name matches a given pattern and which optionally contains a given text. The search for a root starts at a given directory (the working directory by default), and proceeds up the directory hierarchy.

find_root(criterion, path = ".")

Arguments

criterion
A criterion, will be coerced using as.root_criterion
path
The start directory

Value

The normalized path of the root as specified by the search criterion. Throws an error if no root is found

Details

Starting from the working directory, the find_root function searches for the root. If a root is found, the ... arguments are used to construct a path; thus, if no extra arguments are given, the root is returned. If no root is found, an error is thrown.

See also

glob2rx file.path

Examples

## Not run: ------------------------------------ # find_root(glob2rx("DESCRIPTION"), "^Package: ") ## ---------------------------------------------