filepath.Join删除点

Question

i have a problem with create path for rsync.

x := filepath.Join("home", "my_name", "need_folder", ".")
fmt.Println(x)

I get "home/my_name/need_folder", but need "home/my_name/need_folder/.", how fix without concat? In linux folder with name "." not impossible.

Thank you!

Answer 1

You can't do that with the filepath.Join() as its documentation states:

Join calls Clean on the result...

And since . denotes the "current" directory, it will be removed by filepath.Clean():

It applies the following rules iteratively until no further processing can be done:

1. [...]

2. Eliminate each . path name element (the current directory).

And in fact you can't do what you want with the path/filepath package at all, there is no support for this operation.

You need to use string concatenation manually. Use filepath.Separator for it, it'll be safe:

x := filepath.Join("home", "my_name", "need_folder") +
    string(filepath.Separator) + "."
fmt.Println(x)

Output (try it on the Go Playground):

home/my_name/need_folder/.