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(convert-standard-filename): Convert leading

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directories as well.  When long file names are supported, convert
characters that are invalid in Windows file names.
This commit is contained in:
Eli Zaretskii 2000-06-22 14:57:45 +00:00
parent 543ce495ab
commit 09def38b4d
1 changed files with 67 additions and 42 deletions
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109
lisp/dos-fns.el
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@ -34,49 +34,74 @@
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."
(if (or (msdos-long-file-names)
(not (stringp filename))
(member (file-name-nondirectory filename) '("" "." "..")))
(if (or (not (stringp filename))
;; Note: the empty file-name-nondirectory catches the case
;; where FILENAME is "x:" or "x:/", thus preventing infinite
;; recursion.
(string-match "\\`[a-zA-Z]:[/\\]?\\'" filename))
filename
(let* ((dir (file-name-directory filename))
(string (copy-sequence (file-name-nondirectory filename)))
(lastchar (aref string (1- (length string))))
i firstdot)
;; 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 FILENAME has a trailing slash, remove it and recurse.
(if (memq (aref filename (1- (length filename))) '(?/ ?\\))
(concat (convert-standard-filename
(substring filename 0 (1- (length filename))))
"/")
(let* ((dir
;; If FILENAME is "x:foo", file-name-directory returns
;; "x:/bar/baz", substituting the current working
;; directory on drive x:. We want to be left with "x:"
;; instead.
(if (and (eq (aref filename 1) ?:)
(null (string-match "[/\\]" filename)))
(substring filename 0 2)
(file-name-directory filename)))
(string (copy-sequence (file-name-nondirectory filename)))
(lastchar (aref string (1- (length string))))
i firstdot)
(if (msdos-long-file-names)
;; Replace characters that are invalid even on Windows.
(while (setq i (string-match "[?*:<>|\"\000-\037]" string))
(aset string i ?!))
;; 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 (if (and (stringp dir)
(memq (aref dir (1- (length dir))) '(?/ ?\\)))
(concat (convert-standard-filename
(substring dir 0 (1- (length dir))))
"/")
(convert-standard-filename dir))
string)))))
;; See dos-vars.el for defcustom.
(defvar msdos-shells)