[Function]
namestring pathname => namestring
file-namestring pathname => namestring
directory-namestring pathname => namestring
host-namestring pathname => namestring
enough-namestring pathname {&optional defaults} => namestring
pathname---a pathname designator.
defaults---a pathname designator.
The default is the value of *default-pathname-defaults*.
namestring---a string or nil.
[Editorial Note by KMP: Under what circumstances can NIL be returned??]
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.
(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"
section truename [Function] , section merge-pathnames [Function] , pathname, logical-pathname, section File System Concepts,
section Pathnames as Filenames
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