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| | ;;; org-elisp-symbol.el --- Org links to emacs-lisp symbols
;;
;; Copyright 2007-2016 Free Software Foundation, Inc.
;;
;; Author: Bastien Guerry
;; Version: 0.2
;; Keywords: org, remember, lisp
;; URL: http://www.cognition.ens.fr/~guerry/u/org-elisp-symbol.el
;;
;; This file is not part of GNU Emacs.
;;
;; This program 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.
;;
;; This program 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 <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;
;; Org-mode already lets you store/insert links to emacs-lisp files,
;; just like any other file. This package lets you precisely link to
;; any emacs-lisp symbol and access useful information about the symbol.
;;
;; Here is the list of available properties when linking from a elisp-symbol:
;;
;; :name The symbol's name.
;; :stype The symbol's type (commandp, function, etc.)
;; :def The function used to set the symbol's value (defun, etc.)
;; :keys The keys associated with the command.
;; :args The arguments of the function.
;; :docstring The docstring of the symbol.
;; :doc The first line of the dostring.
;; :comment A comment line just above the sexp, if any.
;; :fixme A FIXME comment line just above the sexp, if any.
;;
;; Let's say we have a defun like this one:
;;
;; ;; FIXME update docstring
;; (defun org-export-latex-lists ()
;; "Convert lists to LaTeX."
;; (goto-char (point-min))
;; (while (re-search-forward org-export-latex-list-beginning-re nil t)
;; (beginning-of-line)
;; (insert (org-list-to-latex (org-list-parse-list t)) "\n")))
;;
;; And a remember template like:
;;
;; (setq org-remember-templates
;; '((?s "* DEBUG `%:name' (%:args)\n\n%?\n\nFixme: %:fixme\n \
;; Doc: \"%:doc\"\n\n%a")))
;;
;; Then M-x `org-remember' on this sexp will produce this buffer:
;;
;; =====================================================================
;; * DEBUG `org-export-latex-lists' ()
;;
;; <== point
;;
;; Fixme: update the docstring
;; Doc: "Convert lists to LaTeX."
;;
;; [[file:~/path/file.el::defun%20my-func][Function: my-func]]
;; =====================================================================
;;
;; Put this file into your load-path and the following into your ~/.emacs:
;; (require 'org-elisp-symbol)
;;; Code:
(provide 'org-elisp-symbol)
(require 'org)
(org-link-set-parameters "elisp-symbol"
:follow #'org-elisp-symbol-open
:store #'org-elisp-symbol-store-link)
(defun org-elisp-symbol-open (path)
"Visit the emacs-lisp elisp-symbol at PATH."
(let* ((search (when (string-match "::\\(.+\\)\\'" path)
(match-string 1 path)))
(path (substring path 0 (match-beginning 0))))
(org-open-file path t nil search)))
(defun org-elisp-symbol-store-link ()
"Store a link to an emacs-lisp elisp-symbol."
(when (eq major-mode 'emacs-lisp-mode)
(save-excursion
(or (looking-at "^(") (beginning-of-defun))
(looking-at "^(\\([a-z]+\\) \\([^)\n ]+\\) ?\n?[ \t]*\\(?:(\\(.*\\))\\)?")
(let* ((end (save-excursion
(save-match-data
(end-of-defun) (point))))
(def (match-string 1))
(name (match-string 2))
(sym-name (intern-soft name))
(stype (cond ((commandp sym-name) "Command")
((functionp sym-name) "Function")
((user-variable-p sym-name) "User variable")
((string= def "defvar") "Variable")
((string= def "defmacro") "Macro")
((string= def "defun") "Function or command")
(t "Symbol")))
(args (if (match-string 3)
(mapconcat (lambda (a) (unless (string-match "^&" a) a))
(split-string (match-string 3)) " ")
"no arg"))
(docstring (cond ((functionp sym-name)
(or (documentation sym-name)
"[no documentation]"))
((string-match "[Vv]ariable" stype)
(documentation-property sym-name
'variable-documentation))
(t "no documentation")))
(doc (and (string-match "^\\([^\n]+\\)$" docstring)
(match-string 1 docstring)))
(fixme (save-excursion
(beginning-of-defun) (end-of-defun)
(if (re-search-forward "^;+ ?FIXME[ :]*\\(.*\\)$" end t)
(match-string 1) "nothing to fix")))
(comment (save-excursion
(beginning-of-defun) (end-of-defun)
(if (re-search-forward "^;;+ ?\\(.*\\)$" end t)
(match-string 1) "no comment")))
keys keys-desc link description)
(if (equal stype "Command")
(setq keys (where-is-internal sym-name)
keys-desc
(if keys (mapconcat 'key-description keys " ") "none")))
(setq link (concat "file:" (abbreviate-file-name buffer-file-name)
"::" def " " name))
(setq description (concat stype ": " name))
(org-store-link-props
:type "elisp-symbol"
:link link
:description description
:def def
:name name
:stype stype
:args args
:keys keys-desc
:docstring docstring
:doc doc
:fixme fixme
:comment comment)))))
(provide 'org-elisp-symbol)
\f
;;;;##########################################################################
;;;; User Options, Variables
;;;;##########################################################################
;;; org-elisp-symbol.el ends here
|