lua.wetgenes.path.parse

split a path into named parts like so

|--------------------------------------------|
|                     path                   |
|-----------------------|--------------------|
|         dir           |        file        |
|----------|------------|----------|---------|
| root [1] | folder [2] | name [3] | ext [4] |
|----------|------------|----------|---------|
| /        | home/user/ | file     | .txt    |
|----------|------------|----------|---------|

this can be reversed with simple joins and checks for nil, note that [1][2][3][4] are forced strings so will be "" rather than nil unlike their named counterparts. This means you may use wpath.join to reverse this parsing.

dir = (root or "")..(folder or "")
file = (name or "")..(ext or "")
path = (dir or "")..(file or "")
path = (root or "")..(folder or "")..(name or "")..(ext or "")
path = [1]..[2]..[3]..[4]
path = wpath.join(it)

if root is set then it implies an absolute path and will be something like C:\ under windows.