mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
89e2d47661
(finder-mode): Use finder-mode-syntax-table. Set font-lock-defaults. (finder-exit): Ignore errors rather than avoiding them. Kill *Finder-package* buffer also.
387 lines
13 KiB
EmacsLisp
387 lines
13 KiB
EmacsLisp
;;; finder.el --- topic & keyword-based code finder
|
||
|
||
;; Copyright (C) 1992, 1997, 1998, 1999, 2001, 2002, 2003,
|
||
;; 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
|
||
|
||
;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
|
||
;; Created: 16 Jun 1992
|
||
;; Version: 1.0
|
||
;; Keywords: help
|
||
|
||
;; 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, 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., 51 Franklin Street, Fifth Floor,
|
||
;; Boston, MA 02110-1301, USA.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This mode uses the Keywords library header to provide code-finding
|
||
;; services by keyword.
|
||
;;
|
||
;; Things to do:
|
||
;; 1. Support multiple keywords per search. This could be extremely hairy;
|
||
;; there doesn't seem to be any way to get completing-read to exit on
|
||
;; an EOL with no substring pending, which is what we'd want to end the loop.
|
||
;; 2. Search by string in synopsis line?
|
||
;; 3. Function to check finder-package-info for unknown keywords.
|
||
|
||
;;; Code:
|
||
|
||
(require 'lisp-mnt)
|
||
(require 'find-func) ;for find-library(-suffixes)
|
||
;; Use `load' rather than `require' so that it doesn't get loaded
|
||
;; during byte-compilation (at which point it might be missing).
|
||
(load "finder-inf" t t)
|
||
|
||
(defvar finder-mode-hook nil
|
||
"*Hook run when function `finder-mode' is called.")
|
||
|
||
;; Local variable in finder buffer.
|
||
(defvar finder-headmark)
|
||
|
||
;; These are supposed to correspond to top-level customization groups,
|
||
;; says rms.
|
||
(defvar finder-known-keywords
|
||
'(
|
||
(abbrev . "abbreviation handling, typing shortcuts, macros")
|
||
;; Too specific:
|
||
(bib . "code related to the `bib' bibliography processor")
|
||
(c . "support for the C language and related languages")
|
||
(calendar . "calendar and time management support")
|
||
(comm . "communications, networking, remote access to files")
|
||
(convenience . "convenience features for faster editing")
|
||
(data . "support for editing files of data")
|
||
(docs . "support for Emacs documentation")
|
||
(emulations . "emulations of other editors")
|
||
(extensions . "Emacs Lisp language extensions")
|
||
(faces . "support for multiple fonts")
|
||
(files . "support for editing and manipulating files")
|
||
(frames . "support for Emacs frames and window systems")
|
||
(games . "games, jokes and amusements")
|
||
(hardware . "support for interfacing with exotic hardware")
|
||
(help . "support for on-line help systems")
|
||
(hypermedia . "support for links between text or other media types")
|
||
(i18n . "internationalization and alternate character-set support")
|
||
(internal . "code for Emacs internals, build process, defaults")
|
||
(languages . "specialized modes for editing programming languages")
|
||
(lisp . "Lisp support, including Emacs Lisp")
|
||
(local . "code local to your site")
|
||
(maint . "maintenance aids for the Emacs development group")
|
||
(mail . "modes for electronic-mail handling")
|
||
(matching . "various sorts of searching and matching")
|
||
(mouse . "mouse support")
|
||
(multimedia . "images and sound support")
|
||
(news . "support for netnews reading and posting")
|
||
(oop . "support for object-oriented programming")
|
||
(outlines . "support for hierarchical outlining")
|
||
(processes . "process, subshell, compilation, and job control support")
|
||
(terminals . "support for terminal types")
|
||
(tex . "supporting code for the TeX formatter")
|
||
(tools . "programming tools")
|
||
(unix . "front-ends/assistants for, or emulators of, UNIX-like features")
|
||
;; Not a custom group and not currently useful.
|
||
;; (vms . "support code for vms")
|
||
(wp . "word processing")
|
||
))
|
||
|
||
(defvar finder-mode-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(define-key map " " 'finder-select)
|
||
(define-key map "f" 'finder-select)
|
||
(define-key map [follow-link] 'mouse-face)
|
||
(define-key map [mouse-2] 'finder-mouse-select)
|
||
(define-key map "\C-m" 'finder-select)
|
||
(define-key map "?" 'finder-summary)
|
||
(define-key map "n" 'next-line)
|
||
(define-key map "p" 'previous-line)
|
||
(define-key map "q" 'finder-exit)
|
||
(define-key map "d" 'finder-list-keywords)
|
||
map))
|
||
|
||
(defvar finder-mode-syntax-table
|
||
(let ((st (make-syntax-table emacs-lisp-mode-syntax-table)))
|
||
(modify-syntax-entry ?\; ". " st)
|
||
st)
|
||
"Syntax table used while in `finder-mode'.")
|
||
|
||
(defvar finder-font-lock-keywords
|
||
'(("`\\([^']+\\)'" 1 font-lock-constant-face prepend))
|
||
"Font-lock keywords for Finder mode.")
|
||
|
||
|
||
;;; Code for regenerating the keyword list.
|
||
|
||
(defvar finder-package-info nil
|
||
"Assoc list mapping file names to description & keyword lists.")
|
||
|
||
(defvar generated-finder-keywords-file "finder-inf.el"
|
||
"File \\[finder-compile-keywords] puts finder keywords into.")
|
||
|
||
(defun finder-compile-keywords (&rest dirs)
|
||
"Regenerate the keywords association list into `generated-finder-keywords-file'.
|
||
Optional arguments DIRS are a list of Emacs Lisp directories to compile from;
|
||
no arguments compiles from `load-path'."
|
||
(save-excursion
|
||
(let ((processed nil))
|
||
(find-file generated-finder-keywords-file)
|
||
(erase-buffer)
|
||
(insert ";;; " (file-name-nondirectory generated-finder-keywords-file)
|
||
" --- keyword-to-package mapping\n")
|
||
(insert ";; This file is part of GNU Emacs.\n")
|
||
(insert ";;; Commentary:\n")
|
||
(insert ";; Don't edit this file. It's generated by finder.el\n\n")
|
||
(insert ";;; Code:\n")
|
||
(insert "\n(setq finder-package-info '(\n")
|
||
(mapc
|
||
(lambda (d)
|
||
(when (file-exists-p (directory-file-name d))
|
||
(message "Directory %s" d)
|
||
(mapcar
|
||
(lambda (f)
|
||
(if (and (or (string-match "^[^=].*\\.el$" f)
|
||
;; Allow compressed files also. Fixme:
|
||
;; generalize this, especially for
|
||
;; MS-DOG-type filenames.
|
||
(and (string-match "^[^=].*\\.el\\.\\(gz\\|Z\\)$" f)
|
||
(require 'jka-compr)))
|
||
;; Ignore lock files.
|
||
(not (string-match "^.#" f))
|
||
(not (member f processed)))
|
||
(let (summary keystart keywords)
|
||
(setq processed (cons f processed))
|
||
(save-excursion
|
||
(set-buffer (get-buffer-create "*finder-scratch*"))
|
||
(buffer-disable-undo (current-buffer))
|
||
(erase-buffer)
|
||
(insert-file-contents
|
||
(concat (file-name-as-directory (or d ".")) f))
|
||
(setq summary (lm-synopsis))
|
||
(setq keywords (lm-keywords)))
|
||
(insert
|
||
(format " (\"%s\"\n "
|
||
(if (string-match "\\.\\(gz\\|Z\\)$" f)
|
||
(file-name-sans-extension f)
|
||
f)))
|
||
(prin1 summary (current-buffer))
|
||
(insert
|
||
"\n ")
|
||
(setq keystart (point))
|
||
(insert
|
||
(if keywords (format "(%s)" keywords) "nil")
|
||
")\n")
|
||
(subst-char-in-region keystart (point) ?, ? )
|
||
)))
|
||
(directory-files (or d ".")))))
|
||
(or dirs load-path))
|
||
(insert "))\n
|
||
\(provide '" (file-name-sans-extension
|
||
(file-name-nondirectory generated-finder-keywords-file)) ")
|
||
|
||
;; Local Variables:
|
||
;; version-control: never
|
||
;; no-byte-compile: t
|
||
;; no-update-autoloads: t
|
||
;; End:
|
||
\;;; " (file-name-nondirectory generated-finder-keywords-file) " ends here\n")
|
||
(kill-buffer "*finder-scratch*")
|
||
(eval-buffer) ;; So we get the new keyword list immediately
|
||
(basic-save-buffer))))
|
||
|
||
(defun finder-compile-keywords-make-dist ()
|
||
"Regenerate `finder-inf.el' for the Emacs distribution."
|
||
(apply 'finder-compile-keywords command-line-args-left)
|
||
(kill-emacs))
|
||
|
||
;;; Now the retrieval code
|
||
|
||
(defun finder-insert-at-column (column &rest strings)
|
||
"Insert, at column COLUMN, other args STRINGS."
|
||
(if (>= (current-column) column) (insert "\n"))
|
||
(move-to-column column t)
|
||
(apply 'insert strings))
|
||
|
||
(defvar finder-help-echo nil)
|
||
|
||
(defun finder-mouse-face-on-line ()
|
||
"Put `mouse-face' and `help-echo' properties on the previous line."
|
||
(save-excursion
|
||
(forward-line -1)
|
||
(unless finder-help-echo
|
||
(setq finder-help-echo
|
||
(let* ((keys1 (where-is-internal 'finder-select
|
||
finder-mode-map))
|
||
(keys (nconc (where-is-internal
|
||
'finder-mouse-select finder-mode-map)
|
||
keys1)))
|
||
(concat (mapconcat 'key-description keys ", ")
|
||
": select item"))))
|
||
(add-text-properties
|
||
(line-beginning-position) (line-end-position)
|
||
'(mouse-face highlight
|
||
help-echo finder-help-echo))))
|
||
|
||
;;;###autoload
|
||
(defun finder-list-keywords ()
|
||
"Display descriptions of the keywords in the Finder buffer."
|
||
(interactive)
|
||
(if (get-buffer "*Finder*")
|
||
(pop-to-buffer "*Finder*")
|
||
(pop-to-buffer (set-buffer (get-buffer-create "*Finder*")))
|
||
(finder-mode)
|
||
(setq buffer-read-only nil)
|
||
(erase-buffer)
|
||
(mapc
|
||
(lambda (assoc)
|
||
(let ((keyword (car assoc)))
|
||
(insert (symbol-name keyword))
|
||
(finder-insert-at-column 14 (concat (cdr assoc) "\n"))
|
||
(finder-mouse-face-on-line)))
|
||
finder-known-keywords)
|
||
(goto-char (point-min))
|
||
(setq finder-headmark (point))
|
||
(setq buffer-read-only t)
|
||
(set-buffer-modified-p nil)
|
||
(balance-windows)
|
||
(finder-summary)))
|
||
|
||
(defun finder-list-matches (key)
|
||
(pop-to-buffer (set-buffer (get-buffer-create "*Finder Category*")))
|
||
(finder-mode)
|
||
(setq buffer-read-only nil)
|
||
(erase-buffer)
|
||
(let ((id (intern key)))
|
||
(insert
|
||
"The following packages match the keyword `" key "':\n\n")
|
||
(setq finder-headmark (point))
|
||
(mapc
|
||
(lambda (x)
|
||
(if (memq id (car (cdr (cdr x))))
|
||
(progn
|
||
(insert (car x))
|
||
(finder-insert-at-column 16 (concat (nth 1 x) "\n"))
|
||
(finder-mouse-face-on-line))))
|
||
finder-package-info)
|
||
(goto-char (point-min))
|
||
(forward-line)
|
||
(setq buffer-read-only t)
|
||
(set-buffer-modified-p nil)
|
||
(shrink-window-if-larger-than-buffer)
|
||
(finder-summary)))
|
||
|
||
;;;###autoload
|
||
(defun finder-commentary (file)
|
||
"Display FILE's commentary section.
|
||
FILE should be in a form suitable for passing to `locate-library'."
|
||
(interactive
|
||
(list
|
||
(completing-read "Library name: "
|
||
'locate-file-completion
|
||
(cons (or find-function-source-path load-path)
|
||
(find-library-suffixes)))))
|
||
(let* ((str (lm-commentary (find-library-name file))))
|
||
(if (null str)
|
||
(error "Can't find any Commentary section"))
|
||
;; This used to use *Finder* but that would clobber the
|
||
;; directory of categories.
|
||
(delete-other-windows)
|
||
(pop-to-buffer "*Finder-package*")
|
||
(setq buffer-read-only nil)
|
||
(erase-buffer)
|
||
(insert str)
|
||
(goto-char (point-min))
|
||
(delete-blank-lines)
|
||
(goto-char (point-max))
|
||
(delete-blank-lines)
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "^;+ ?" nil t)
|
||
(replace-match "" nil nil))
|
||
(goto-char (point-min))
|
||
(setq buffer-read-only t)
|
||
(set-buffer-modified-p nil)
|
||
(shrink-window-if-larger-than-buffer)
|
||
(finder-mode)
|
||
(finder-summary)))
|
||
|
||
(defun finder-current-item ()
|
||
(let ((key (save-excursion
|
||
(beginning-of-line)
|
||
(current-word))))
|
||
(if (or (and finder-headmark (< (point) finder-headmark))
|
||
(= (length key) 0))
|
||
(error "No keyword or filename on this line")
|
||
key)))
|
||
|
||
(defun finder-select ()
|
||
"Select item on current line in a finder buffer."
|
||
(interactive)
|
||
(let ((key (finder-current-item)))
|
||
(if (string-match "\\.el$" key)
|
||
(finder-commentary key)
|
||
(finder-list-matches key))))
|
||
|
||
(defun finder-mouse-select (event)
|
||
"Select item in a finder buffer with the mouse."
|
||
(interactive "e")
|
||
(save-excursion
|
||
(set-buffer (window-buffer (posn-window (event-start event))))
|
||
(goto-char (posn-point (event-start event)))
|
||
(finder-select)))
|
||
|
||
;;;###autoload
|
||
(defun finder-by-keyword ()
|
||
"Find packages matching a given keyword."
|
||
(interactive)
|
||
(finder-list-keywords))
|
||
|
||
(defun finder-mode ()
|
||
"Major mode for browsing package documentation.
|
||
\\<finder-mode-map>
|
||
\\[finder-select] more help for the item on the current line
|
||
\\[finder-exit] exit Finder mode and kill the Finder buffer."
|
||
(interactive)
|
||
(kill-all-local-variables)
|
||
(use-local-map finder-mode-map)
|
||
(set-syntax-table finder-mode-syntax-table)
|
||
(setq font-lock-defaults '(finder-font-lock-keywords nil nil
|
||
(("+-*/.<>=!?$%_&~^:@" . "w")) nil))
|
||
(setq mode-name "Finder")
|
||
(setq major-mode 'finder-mode)
|
||
(set (make-local-variable 'finder-headmark) nil)
|
||
(run-mode-hooks 'finder-mode-hook))
|
||
|
||
(defun finder-summary ()
|
||
"Summarize basic Finder commands."
|
||
(interactive)
|
||
(message "%s"
|
||
(substitute-command-keys
|
||
"\\<finder-mode-map>\\[finder-select] = select, \
|
||
\\[finder-mouse-select] = select, \\[finder-list-keywords] = to \
|
||
finder directory, \\[finder-exit] = quit, \\[finder-summary] = help")))
|
||
|
||
(defun finder-exit ()
|
||
"Exit Finder mode.
|
||
Delete the window and kill the buffer."
|
||
(interactive)
|
||
(condition-case nil (delete-window) (error nil))
|
||
(when (get-buffer "*Finder*") (kill-buffer "*Finder*"))
|
||
(when (get-buffer "*Finder-package*") (kill-buffer "*Finder-package*"))
|
||
(when (get-buffer "*Finder Category*") (kill-buffer "*Finder Category*")))
|
||
|
||
|
||
(provide 'finder)
|
||
|
||
;; arch-tag: ec85ff49-8cb8-41f5-a63f-9131d53ce2c5
|
||
;;; finder.el ends here
|