- Syntax:
-
namestring
pathname
namestring
file-namestring
pathname
namestring
directory-namestring
pathname
namestring
host-namestring
pathname
namestring
enough-namestring
pathname &optional defaults
namestring
- Arguments and Values:
-
pathname - a pathname designator.
defaults - a pathname designator.
The default is the value of *default-pathname-defaults*.
namestring - a string or nil.
- Description:
-
These functions convert pathname into a namestring.
The name represented by pathname is returned as a namestring
in an implementation-dependent canonical form.
namestring returns the full form of pathname.
file-namestring returns just the name, type, and version
components of pathname.
directory-namestring returns the directory name portion.
host-namestring returns the host name.
enough-namestring returns an abbreviated namestring
that is just sufficient to identify the file named by pathname
when considered relative to the defaults.
It is required that
(merge-pathnames (enough-namestring pathname defaults) defaults)
==(merge-pathnames (parse-namestring pathname nil defaults) defaults)
in all cases, and the result of enough-namestring is
the shortest reasonable string that will satisfy this criterion.
It is not necessarily possible to construct a valid namestring
by concatenating some of the three shorter namestrings in some order.
- Examples:
-
(namestring "getty")
"getty"
(setq q (make-pathname :host "kathy"
:directory
(pathname-directory *default-pathname-defaults*)
:name "getty"))
#S(PATHNAME :HOST "kathy" :DEVICE NIL :DIRECTORY directory-name
:NAME "getty" :TYPE NIL :VERSION NIL)
(file-namestring q) "getty"
(directory-namestring q) directory-name
(host-namestring q) "kathy"
;;;Using Unix syntax and the wildcard conventions used by the
;;;particular version of Unix on which this example was created:
(namestring
(translate-pathname "/usr/dmr/hacks/frob.l"
"/usr/d*/hacks/*.l"
"/usr/d*/backup/hacks/backup-*.*"))
"/usr/dmr/backup/hacks/backup-frob.l"
(namestring
(translate-pathname "/usr/dmr/hacks/frob.l"
"/usr/d*/hacks/fr*.l"
"/usr/d*/backup/hacks/backup-*.*"))
"/usr/dmr/backup/hacks/backup-ob.l"
;;;This is similar to the above example but uses two different hosts,
;;;U: which is a Unix and V: which is a VMS. Note the translation
;;;of file type and alphabetic case conventions.
(namestring
(translate-pathname "U:/usr/dmr/hacks/frob.l"
"U:/usr/d*/hacks/*.l"
"V:SYS$DISK:[D*.BACKUP.HACKS]BACKUP-*.*"))
"V:SYS$DISK:[DMR.BACKUP.HACKS]BACKUP-FROB.LSP"
(namestring
(translate-pathname "U:/usr/dmr/hacks/frob.l"
"U:/usr/d*/hacks/fr*.l"
"V:SYS$DISK:[D*.BACKUP.HACKS]BACKUP-*.*"))
"V:SYS$DISK:[DMR.BACKUP.HACKS]BACKUP-OB.LSP"
- See Also:
-
truename,
merge-pathnames,
pathname,
logical-pathname,
Section 20.1 File System Concepts,
Section 19.1.2 Pathnames as Filenames
- Allegro CL Implementation Details:
-
See cl:namestring for information on the Allegro CL implementation of namestring. Note
the links are to the documentation for the current Allegro CL
version. Replace /current/ in the URL with the Allegro CL version
number to see similar documentation is earlier releases.