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112 lines
4.1 KiB
EmacsLisp
112 lines
4.1 KiB
EmacsLisp
;;; cedet-files.el --- Common routines dealing with file names. -*- lexical-binding: t; -*-
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;; Copyright (C) 2007-2022 Free Software Foundation, Inc.
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;; Author: Eric M. Ludlam <zappo@gnu.org>
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;; Package: cedet
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; Various useful routines for dealing with file names in the tools
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;; which are a part of CEDET.
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;;; Code:
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(defun cedet-directory-name-to-file-name (referencedir &optional testmode)
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"Convert the REFERENCEDIR (a full path name) into a filename.
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Convert directory separation characters into ! characters.
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Optional argument TESTMODE is used by tests to avoid conversion
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to the file's truename, and dodging platform tricks."
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(let ((file referencedir))
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;; Expand to full file name
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(when (not testmode)
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(setq file (file-truename file)))
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;; If FILE is a directory, then force it to end in /.
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(when (file-directory-p file)
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(setq file (file-name-as-directory file)))
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;; Handle Windows Special cases
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(when (or (memq system-type '(windows-nt ms-dos)) testmode)
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;; Replace any invalid file-name characters (for the
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;; case of backing up remote files).
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(when (not testmode)
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(setq file (expand-file-name (convert-standard-filename file))))
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;; Normalize DOSish file names.
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(if (eq (aref file 1) ?:)
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(setq file (concat "/"
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"drive_"
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(char-to-string (downcase (aref file 0)))
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(if (eq (aref file 2) ?/)
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""
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"/")
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(substring file 2)))))
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;; Make the name unique by substituting directory
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;; separators. It may not really be worth bothering about
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;; doubling `!'s in the original name...
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(setq file (subst-char-in-string
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?/ ?!
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(string-replace "!" "!!" file)))
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file))
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(defun cedet-file-name-to-directory-name (referencefile &optional testmode)
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"Reverse the process of `cedet-directory-name-to-file-name'.
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Convert REFERENCEFILE to a directory name replacing ! with /.
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Optional TESTMODE is used in tests to avoid doing some platform
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specific conversions during tests."
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(let ((file referencefile))
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;; Replace the ! with /
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(setq file (subst-char-in-string ?! ?/ file))
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;; Occurrences of // meant there was once a single !.
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(setq file (string-replace "//" "!" file))
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;; Handle Windows special cases
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(when (or (memq system-type '(windows-nt ms-dos)) testmode)
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;; Handle drive letters from DOSish file names.
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(when (string-match "^/drive_\\([a-z]\\)/" file)
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(let ((driveletter (match-string 1 file))
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)
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(setq file (concat driveletter ":"
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(substring file (match-end 1))))))
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;; Handle the \\file\name nomenclature on some Windows boxes.
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(when (string-match "^!" file)
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(setq file (concat "//" (substring file 1)))))
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file))
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(defun cedet-files-list-recursively (dir re)
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"Return list of files in directory matching to given regex."
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(when (file-accessible-directory-p dir)
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(let ((files (directory-files dir t))
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matched)
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(dolist (file files matched)
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(let ((fname (file-name-nondirectory file)))
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(cond
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((or (string= fname ".")
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(string= fname "..")) nil)
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((and (file-regular-p file)
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(string-match re fname))
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(setq matched (cons file matched)))
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((file-directory-p file)
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(let ((tfiles (cedet-files-list-recursively file re)))
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(when tfiles (setq matched (append matched tfiles)))))))))))
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(provide 'cedet-files)
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;;; cedet-files.el ends here
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