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pathname(+FilePath, -Path)

Succeeds if the pathname FilePath, if stripped of its file name, gives Path, the path up to the parent directory of the file.
FilePath
String or atom.
Path
Variable or string.

This built-in predicate is obsolete!

Description

Used to check if the pathname FilePath, when stripped of its file name, unifies with Path, the path up to the parent directory of the file. pathname(File, Path) is equal to pathname(File, Path, _).

Modes and Determinism

Exceptions

(4) instantiation fault
FilePath is not instantiated.
(5) type error
FilePath is not a string or atom.
(5) type error
Path is neither a string nor a variable.

Examples

Success:
      [eclipse]: pathname("/home/user/userfile", P).
      P = "/home/user/"
      yes.

      pathname("/home/user","/home/").
      pathname("/home/","/home/").
      pathname("/home","/").
      pathname("/","/").

Fail:
      pathname("/home/","/").

Error:
      pathname(F,P).                   (Error 4).
      pathname('/home/user/',P).       (Error 5).

See Also

pathname / 4, pathname / 3, suffix / 2