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;;; cedet-files.el --- Common routines dealing with file names.
;; Copyright (C) 2007-2021 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Package: cedet
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Various useful routines for dealing with file names in the tools
;; which are a part of CEDET.
;;; Code:
(defun cedet-directory-name-to-file-name (referencedir &optional testmode)
"Convert the REFERENCEDIR (a full path name) into a filename.
Convert directory separation characters into ! characters.
Optional argument TESTMODE is used by tests to avoid conversion
to the file's truename, and dodging platform tricks."
(let ((file referencedir))
;; Expand to full file name
(when (not testmode)
(setq file (file-truename file)))
;; If FILE is a directory, then force it to end in /.
(when (file-directory-p file)
(setq file (file-name-as-directory file)))
;; Handle Windows Special cases
(when (or (memq system-type '(windows-nt ms-dos)) testmode)
;; Replace any invalid file-name characters (for the
;; case of backing up remote files).
(when (not testmode)
(setq file (expand-file-name (convert-standard-filename file))))
;; Normalize DOSish file names.
(if (eq (aref file 1) ?:)
(setq file (concat "/"
"drive_"
(char-to-string (downcase (aref file 0)))
(if (eq (aref file 2) ?/)
""
"/")
(substring file 2)))))
;; Make the name unique by substituting directory
;; separators. It may not really be worth bothering about
;; doubling `!'s in the original name...
(setq file (subst-char-in-string
?/ ?!
(replace-regexp-in-string "!" "!!" file)))
file))
(defun cedet-file-name-to-directory-name (referencefile &optional testmode)
"Reverse the process of `cedet-directory-name-to-file-name'.
Convert REFERENCEFILE to a directory name replacing ! with /.
Optional TESTMODE is used in tests to avoid doing some platform
specific conversions during tests."
(let ((file referencefile))
;; Replace the ! with /
(setq file (subst-char-in-string ?! ?/ file))
;; Occurrences of // meant there was once a single !.
(setq file (replace-regexp-in-string "//" "!" file))
;; Handle Windows special cases
(when (or (memq system-type '(windows-nt ms-dos)) testmode)
;; Handle drive letters from DOSish file names.
(when (string-match "^/drive_\\([a-z]\\)/" file)
(let ((driveletter (match-string 1 file))
)
(setq file (concat driveletter ":"
(substring file (match-end 1))))))
;; Handle the \\file\name nomenclature on some Windows boxes.
(when (string-match "^!" file)
(setq file (concat "//" (substring file 1)))))
file))
(defun cedet-files-list-recursively (dir re)
"Return list of files in directory matching to given regex."
(when (file-accessible-directory-p dir)
(let ((files (directory-files dir t))
matched)
(dolist (file files matched)
(let ((fname (file-name-nondirectory file)))
(cond
((or (string= fname ".")
(string= fname "..")) nil)
((and (file-regular-p file)
(string-match re fname))
(setq matched (cons file matched)))
((file-directory-p file)
(let ((tfiles (cedet-files-list-recursively file re)))
(when tfiles (setq matched (append matched tfiles)))))))))))
(provide 'cedet-files)
;;; cedet-files.el ends here
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