mirror/emacs
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-11-23 07:19:15 +00:00
Code Issues Releases Activity

(convert-standard-filename): Test msdos-long-file-names.

Browse Source 
Return "." or ".." unchanged.
This commit is contained in:
Richard M. Stallman 1996-05-08 17:40:51 +00:00
parent 54bd13807d
commit 9c7771996c
1 changed files with 44 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
lisp/dos-fns.el
View File

@ -49,51 +49,50 @@
This function's standard definition is trivial; it just returns the argument.
However, on some systems, the function is redefined
with a definition that really does change some file names."
(let* ((dir (file-name-directory filename))
(string (copy-sequence (file-name-nondirectory filename)))
(lastchar (aref string (1- (length string))))
i firstdot)
;; If the argument is empty, just return it.
(if (or (not (stringp filename))
(string= filename "")
(string= string ""))
filename
(progn
;; Change a leading period to a leading underscore.
(if (= (aref string 0) ?.)
(aset string 0 ?_))
;; Get rid of invalid characters.
(while (setq i (string-match
"[^-a-zA-Z0-9_.%~^$!#&{}@`'()\200-\376]"
string))
(aset string i ?_))
;; If we don't have a period,
;; and we have a dash or underscore that isn't the first char,
;; change that to a period.
(if (and (not (string-match "\\." string))
(setq i (string-match "[-_]" string 1)))
(aset string i ?\.))
;; If we don't have a period in the first 8 chars, insert one.
(if (> (or (string-match "\\." string)
(length string))
8)
(setq string
(concat (substring string 0 8)
"."
(substring string 8))))
(setq firstdot (or (string-match "\\." string) (1- (length string))))
;; Truncate to 3 chars after the first period.
(if (> (length string) (+ firstdot 4))
(setq string (substring string 0 (+ firstdot 4))))
;; Change all periods except the first one into underscores.
(while (string-match "\\." string (1+ firstdot))
(setq i (string-match "\\." string (1+ firstdot)))
(aset string i ?_))
;; If the last character of the original filename was `~',
;; make sure the munged name ends with it also.
(if (equal lastchar ?~)
(aset string (1- (length string)) lastchar))
(concat dir string)))))
(if (or (msdos-long-file-names)
(not (stringp filename))
(member (file-name-nondirectory filename) '("" "." "..")))
filename
(let* ((dir (file-name-directory filename))
(string (copy-sequence (file-name-nondirectory filename)))
(lastchar (aref string (1- (length string))))
i firstdot)
;; If the argument is empty, just return it.
;; Change a leading period to a leading underscore.
(if (= (aref string 0) ?.)
(aset string 0 ?_))
;; Get rid of invalid characters.
(while (setq i (string-match
"[^-a-zA-Z0-9_.%~^$!#&{}@`'()\200-\376]"
string))
(aset string i ?_))
;; If we don't have a period,
;; and we have a dash or underscore that isn't the first char,
;; change that to a period.
(if (and (not (string-match "\\." string))
(setq i (string-match "[-_]" string 1)))
(aset string i ?\.))
;; If we don't have a period in the first 8 chars, insert one.
(if (> (or (string-match "\\." string)
(length string))
8)
(setq string
(concat (substring string 0 8)
"."
(substring string 8))))
(setq firstdot (or (string-match "\\." string) (1- (length string))))
;; Truncate to 3 chars after the first period.
(if (> (length string) (+ firstdot 4))
(setq string (substring string 0 (+ firstdot 4))))
;; Change all periods except the first one into underscores.
(while (string-match "\\." string (1+ firstdot))
(setq i (string-match "\\." string (1+ firstdot)))
(aset string i ?_))
;; If the last character of the original filename was `~',
;; make sure the munged name ends with it also.
(if (equal lastchar ?~)
(aset string (1- (length string)) lastchar))
(concat dir string))))
(defvar file-name-buffer-file-type-alist
'(