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Diffstat (limited to 'lisp/uniquify.el')
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diff --git a/lisp/uniquify.el b/lisp/uniquify.el deleted file mode 100644 index 0152721dad0..00000000000 --- a/lisp/uniquify.el +++ /dev/null @@ -1,384 +0,0 @@ -;;; uniquify.el --- unique buffer names dependent on file name - -;; Copyright (c) 1989, 1995 Free Software Foundation, Inc. - -;; Author: Dick King <king@reasoning.com> -;; Maintainer: Michael Ernst <mernst@theory.lcs.mit.edu> -;; Created: 15 May 86 - -;; 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 2, 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; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, -;; Boston, MA 02111-1307, USA. - -;;; Commentary: - -;; Emacs's standard method for making buffer names unique adds <2>, <3>, -;; etc. to the end of (all but one of) the buffers. This file replaces -;; that behavior, for buffers visiting files and dired buffers, with a -;; uniquification that adds parts of the file name until the buffer names -;; are unique. For instance, buffers visiting /u/mernst/tmp/Makefile and -;; /usr/projects/zaphod/Makefile would be named Makefile|tmp and -;; Makefile|zaphod, respectively (instead of Makefile and Makefile<2>). -;; Other buffer name styles are also available. - -;; To use this file, just load it. -;; To disable it after loading, set variable uniquify-buffer-name-style to nil. -;; For other options, see "User-visible variables", below. - -;; A version of uniquify.el that works under Emacs 18, Emacs 19, XEmacs, -;; and InfoDock is available from the maintainer. - -;;; Change Log: - -;; Originally by Dick King <king@reasoning.com> 15 May 86 -;; Converted for Emacs 18 by Stephen Gildea <gildea@lcs.mit.edu> -;; Make uniquify-min-dir-content 0 truly non-invasive. gildea 23 May 89 -;; Some cleanup. uniquify-min-dir-content default 0. gildea 01 Jun 89 -;; Don't rename to "". Michael Ernst <mernst@theory.lcs.mit.edu> 15 Jun 94 -;; Add kill-buffer-hook. Kenneth Manheimer <ken.manheimer@nist.gov> 09 May 95 -;; Add advice for rename-buffer and create-file-buffer, handle dired buffers, -;; kill-buffer-rationalize-buffer-names-p, documentation. mernst 24 May 95 -;; Remove free variables, fix typos. mernst 5 Jun 95 -;; Efficiently support Emacs 19.27 & earlier. ken.manheimer, mernst 10 Jun 95 -;; Rename user options to "uniquify-...", add uniquify-reverse-dir-content-p, -;; add uniquify-ask-about-buffer-names-p. king, mernst 13 Jun 95 -;; Prefix functions by "uniquify-..."; rename mnemonic-buffer-names to -;; uniquify-buffer-name-style; add 'forward and 'post-forward-angle-brackets -;; styles; remove uniquify-reverse-dir-content-p; add -;; uniquify-trailing-separator-p. mernst 4 Aug 95 - -;; Valuable feedback was provided by -;; Paul Smith <psmith@baynetworks.com>, -;; Alastair Burt <burt@dfki.uni-kl.de>, -;; Bob Weiner <weiner@footloose.sps.mot.com>, -;; Albert L. Ting <alt@vlibs.com>, -;; gyro@reasoning.com. - - -;;; Code: - -(provide 'uniquify) - -;;; User-visible variables - -(defvar uniquify-buffer-name-style 'post-forward - "*If non-nil, buffer names are uniquified with parts of directory name. -The value determines the buffer name style and is one of `forward', -`reverse', `post-forward' (the default), or `post-forward-angle-brackets'. -For example, files `/foo/bar/mumble/name' and `/baz/quux/mumble/name' -would have the following buffer names in the various styles: - forward bar/mumble/name quux/mumble/name - reverse name\\mumble\\bar name\\mumble\\quux - post-forward name|bar/mumble name|quux/mumble - post-forward-angle-brackets name<bar/mumble> name<quux/mumble> - nil name name<2>") - -(defvar uniquify-after-kill-buffer-p nil - "*If non-nil, rerationalize buffer names after a buffer has been killed. -This can be dangerous if Emacs Lisp code is keeping track of buffers by their -names (rather than keeping pointers to the buffers themselves).") - -(defconst uniquify-ask-about-buffer-names-p nil - "*If non-nil, permit user to choose names for buffers with same base file. -If the user chooses to name a buffer, uniquification is preempted and no -other buffer names are changed.") - -(defvar uniquify-min-dir-content 0 - "*Minimum parts of directory name included in buffer name.") - -(defvar uniquify-separator nil - "*String separator for buffer name components. -When `uniquify-buffer-name-style' is `post-forward', separates -base file name from directory part in buffer names (default \"|\"). -When `uniquify-buffer-name-style' is `reverse', separates all -file name components (default \"\\\").") - -(defvar uniquify-trailing-separator-p nil - "*If non-nil, add a file name separator to dired buffer names. -If `uniquify-buffer-name-style' is `forward', add the separator at the end; -if it is `reverse', add the separator at the beginning; otherwise, this -variable is ignored.") - - -;;; Utilities - -(defmacro uniquify-push (item list) - (` (setq (, list) (cons (, item) (, list))))) - -(defmacro uniquify-fix-list-base (a) - (` (car (, a)))) - -(defmacro uniquify-fix-list-filename (a) - (` (car (cdr (, a))))) - -(defmacro uniquify-fix-list-buffer (a) - (` (car (cdr (cdr (, a)))))) - -(defmacro uniquify-cadddr (a) - (` (car (cdr (cdr (cdr (, a))))))) - -;; Internal variables used free -(defvar uniquify-non-file-buffer-names nil) -(defvar uniquify-possibly-resolvable nil) - -;;; Main entry point. - -(defun uniquify-rationalize-file-buffer-names (&optional newbuffile newbuf) - "Makes file buffer names unique by adding segments from file name. -If `uniquify-min-dir-content' > 0, always pulls that many -file name elements. Arguments cause only a subset of buffers to be renamed." - (interactive) - (let (fix-list - uniquify-non-file-buffer-names - (depth uniquify-min-dir-content)) - (let ((buffers (buffer-list))) - (while buffers - (let* ((buffer (car buffers)) - (bfn (if (eq buffer newbuf) - (and newbuffile - (expand-file-name newbuffile)) - (uniquify-buffer-file-name buffer))) - (rawname (and bfn (file-name-nondirectory bfn))) - (deserving (and rawname - (or (not newbuffile) - (equal rawname - (file-name-nondirectory newbuffile)))))) - (if deserving - (uniquify-push (list rawname bfn buffer nil) fix-list) - (uniquify-push (list (buffer-name buffer)) - uniquify-non-file-buffer-names))) - (setq buffers (cdr buffers)))) - ;; selects buffers whose names may need changing, and others that - ;; may conflict. - (setq fix-list - (sort fix-list 'uniquify-fix-list-filename-lessp)) - ;; bringing conflicting names together - (uniquify-rationalize-a-list fix-list depth) - (mapcar 'uniquify-unrationalized-buffer fix-list))) - -;; uniquify's version of buffer-file-name -(defun uniquify-buffer-file-name (buffer) - "Return name of file BUFFER is visiting, or nil if none. -Works on dired buffers as well as ordinary file-visiting buffers." - (or (buffer-file-name buffer) - (save-excursion - (set-buffer buffer) - list-buffers-directory))) - -(defun uniquify-fix-list-filename-lessp (fixlist1 fixlist2) - (uniquify-filename-lessp - (uniquify-fix-list-filename fixlist1) (uniquify-fix-list-filename fixlist2))) - -;; This examines the filename components in reverse order. -(defun uniquify-filename-lessp (s1 s2) - (let ((s1f (file-name-nondirectory s1)) - (s2f (file-name-nondirectory s2))) - (and (not (equal s2f "")) - (or (string-lessp s1f s2f) - (and (equal s1f s2f) - (let ((s1d (file-name-directory s1)) - (s2d (file-name-directory s2))) - (and (not (<= (length s2d) 1)) - (or (<= (length s1d) 1) - (uniquify-filename-lessp - (substring s1d 0 -1) - (substring s2d 0 -1)))))))))) - -;; Was named do-the-buffers-you-couldnt-rationalize -(defun uniquify-unrationalized-buffer (item) - (or (uniquify-cadddr item) nil)) ;maybe better in the future - -(defun uniquify-rationalize-a-list (fix-list depth) - (let (conflicting-sublist - (old-name "") - proposed-name uniquify-possibly-resolvable) - (while fix-list - (let ((item (car fix-list))) - (setq proposed-name (uniquify-get-proposed-name item depth)) - (if (not (equal proposed-name old-name)) - (progn - (uniquify-rationalize-conflicting-sublist - conflicting-sublist old-name depth) - (setq conflicting-sublist nil))) - (uniquify-push item conflicting-sublist) - (setq old-name proposed-name)) - (setq fix-list (cdr fix-list))) - (uniquify-rationalize-conflicting-sublist - conflicting-sublist old-name depth))) - -(defun uniquify-get-proposed-name (item depth) - (let (index - (extra-string "") - (n depth) - (base (uniquify-fix-list-base item)) - (fn (uniquify-fix-list-filename item))) - (while (and (> n 0) - (setq index (string-match - (concat "\\(^\\|/[^/]*\\)/" - (regexp-quote extra-string) - (regexp-quote base) - "\\'") - fn))) - (setq extra-string (substring fn - (if (zerop index) 0 (1+ index)) - ;; (- (length base)) fails for base = "". - ;; Equivalently, we could have used - ;; (apply 'substring ... - ;; (and (not (string= "" base)) - ;; (list (- (length base))))) - (- (length fn) (length base))) - n (1- n))) - (if (zerop n) (setq uniquify-possibly-resolvable t)) - - - ;; Distinguish directories by adding extra separator. - (if (and uniquify-trailing-separator-p - (file-directory-p fn) - (not (string-equal base ""))) - (cond ((eq uniquify-buffer-name-style 'forward) - (setq base (concat base "/"))) - ((eq uniquify-buffer-name-style 'reverse) - (setq base (concat (or uniquify-separator "\\") base))))) - - ;; Trim trailing separator on directory part - (if (and (not (string-equal extra-string "")) - (or (eq uniquify-buffer-name-style 'post-forward) - (eq uniquify-buffer-name-style 'post-forward-angle-brackets))) - (setq extra-string (substring extra-string 0 - (- (length extra-string) 1)))) - - (cond ((string-equal extra-string "") - base) - ((string-equal base "") - extra-string) - ((eq uniquify-buffer-name-style 'forward) - (concat extra-string base)) - ((eq uniquify-buffer-name-style 'reverse) - (concat base (uniquify-reverse-components extra-string))) - ((eq uniquify-buffer-name-style 'post-forward) - (concat base (or uniquify-separator "|") extra-string)) - ((eq uniquify-buffer-name-style 'post-forward-angle-brackets) - (concat base "<" extra-string ">")) - (t (error "Bad value for uniquify-buffer-name-style: %s" - uniquify-buffer-name-style))))) - - -;; Deal with conflicting-sublist, which is set by uniquify-rationalize-a-list. -;; This is only called by uniquify-rationalize-a-list. -(defun uniquify-rationalize-conflicting-sublist (conflicting-sublist old-name depth) - (or (null conflicting-sublist) - (and (null (cdr conflicting-sublist)) - (not (assoc old-name uniquify-non-file-buffer-names)) - (or (and (not (string= old-name "")) - (uniquify-rename-buffer (car conflicting-sublist) old-name)) - t)) - (if uniquify-possibly-resolvable - (uniquify-rationalize-a-list conflicting-sublist (1+ depth))))) - -(defun uniquify-rename-buffer (item newname) - (let ((buffer (uniquify-fix-list-buffer item))) - (if (not (equal newname (buffer-name buffer))) - (let ((unset (current-buffer)) - ;; avoid hooks on rename-buffer - (uniquify-buffer-name-style nil)) - (set-buffer buffer) - (rename-buffer newname) - (set-buffer unset)))) - (rplaca (nthcdr 3 item) t)) - -(defun uniquify-reverse-components (instring) - (let ((sofar '()) - (cursor 0) - (len (length instring)) - (sep (or uniquify-separator "\\"))) - (while (< cursor len) - (if (= (aref instring cursor) ?/) - (setq sofar (cons sep sofar) - cursor (1+ cursor)) - (let ((first-slash (or (string-match "/" instring cursor) len))) - (setq sofar (cons (substring instring cursor first-slash) sofar) - cursor first-slash)))) - (apply (function concat) sofar))) - - -;;; Hooks from the rest of Emacs - -;; Emacs 19 (Emacs or XEmacs) - -;; The logical place to put all this code is in generate-new-buffer-name. -;; It's written in C, so we would add a generate-new-buffer-name-function -;; which, if non-nil, would be called instead of the C. One problem with -;; that is that generate-new-buffer-name takes a potential buffer name as -;; its argument -- not other information, such as what file the buffer will -;; visit. - -;; The below solution works because generate-new-buffer-name is called -;; only by rename-buffer (which, as of 19.29, is never called from C) and -;; generate-new-buffer, which is called only by Lisp functions -;; create-file-buffer and rename-uniquely. Rename-uniquely generally -;; isn't used for buffers visiting files, so it's sufficient to hook -;; rename-buffer and create-file-buffer. (Setting find-file-hooks isn't -;; sufficient.) - -(defadvice rename-buffer (after rename-buffer-uniquify activate) - "Uniquify buffer names with parts of directory name." - (if (and uniquify-buffer-name-style - ;; UNIQUE argument - (ad-get-arg 1)) - (progn - (if uniquify-after-kill-buffer-p - ;; call with no argument; rationalize vs. old name as well as new - (uniquify-rationalize-file-buffer-names) - ;; call with argument: rationalize vs. new name only - (uniquify-rationalize-file-buffer-names - (uniquify-buffer-file-name (current-buffer)) (current-buffer))) - (setq ad-return-value (buffer-name (current-buffer)))))) - -(defadvice create-file-buffer (after create-file-buffer-uniquify activate) - "Uniquify buffer names with parts of directory name." - (if uniquify-buffer-name-style - (uniquify-rationalize-file-buffer-names (ad-get-arg 0) ad-return-value))) - -;; Buffer deletion -;; Rerationalize after a buffer is killed, to reduce coinciding buffer names. -;; This mechanism uses `kill-buffer-hook', which runs *before* deletion. -;; That means that the kill-buffer-hook function cannot just delete the -;; buffer -- it has to set something to do the rationalization *later*. -;; It actually puts another function on `post-command-hook'. This other -;; function runs the rationalization and then removes itself from the hook. -;; Is there a better way to accomplish this? -;; (This ought to set some global variables so the work is done only for -;; buffers with names similar to the deleted buffer. -MDE) - -(defun delay-uniquify-rationalize-file-buffer-names () - "Add `delayed-uniquify-rationalize-file-buffer-names' to `post-command-hook'. -For use on, eg, `kill-buffer-hook', to rationalize *after* buffer deletion." - (if (and uniquify-buffer-name-style - uniquify-after-kill-buffer-p) - (add-hook 'post-command-hook - 'delayed-uniquify-rationalize-file-buffer-names))) - -(defun delayed-uniquify-rationalize-file-buffer-names () - "Rerationalize buffer names and remove self from `post-command-hook'. -See also `delay-rationalize-file-buffer-names' for hook setter." - (uniquify-rationalize-file-buffer-names) - (remove-hook 'post-command-hook - 'delayed-uniquify-rationalize-file-buffer-names)) - -(add-hook 'kill-buffer-hook 'delay-uniquify-rationalize-file-buffer-names) - -;;; uniquify.el ends here - |