Removing ".." and "." from a file path

ruby-talk
1

I only found the “File.expand_path” function to make a relative into
an absolute path, but what about the “…” and “.” components.

I need a canonical version of a file path, so a function that would
also remove adjacent ‘/’ or ‘’ and transform to the corresponding OS
path separator would be the best.

Is there anything like this available ?

2

Hi,

···

In message “Removing “…” and “.” from a file path” on 03/07/19, Lothar Scholz mailinglists@scriptolutions.com writes:

I only found the “File.expand_path” function to make a relative into
an absolute path, but what about the “…” and “.” components.

I need a canonical version of a file path, so a function that would
also remove adjacent ‘/’ or '' and transform to the corresponding OS
path separator would be the best.

Is there anything like this available ?

Try File.expand_path.

$ ri expand_path
------------------------------------------------------ File::expand_path
File.expand_path( fileName [, aDirString] ) → fileName

 Converts a pathname to an absolute pathname. Relative paths are
 referenced from the current working directory of the process unless
 aDirString is given, in which case it will be used as the starting
 point. The given pathname may start with a ``~'', which expands to
 the process owner's home directory (the environment variable HOME
 must be set correctly). ``~user'' expands to the named user's home
 directory.
    File.expand_path("~oracle/bin")           #=> "/home/oracle/bin"
    File.expand_path("../../bin", "/tmp/x")   #=> "/bin"