162 lines
5.6 KiB
EmacsLisp
162 lines
5.6 KiB
EmacsLisp
;;; org-elisp-symbol.el --- Org links to emacs-lisp symbols
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;;
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;; Copyright 2007-2012 Free Software Foundation, Inc.
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;;
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;; Author: bzg AT gnu DOT org
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;; Version: 0.2
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;; Keywords: org, remember, lisp
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;; URL: http://www.cognition.ens.fr/~guerry/u/org-elisp-symbol.el
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;;
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;; This file is not part of GNU Emacs.
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;;
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;; This program 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, or (at your option)
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;; any later version.
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;;
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;; This program 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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; if not, write to the Free Software
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;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;;
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;;; Commentary:
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;;
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;; Org-mode already lets you store/insert links to emacs-lisp files,
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;; just like any other file. This package lets you precisely link to
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;; any emacs-lisp symbol and access useful information about the symbol.
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;;
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;; Here is the list of available properties when linking from a elisp-symbol:
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;;
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;; :name The symbol's name.
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;; :stype The symbol's type (commandp, function, etc.)
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;; :def The function used to set the symbol's value (defun, etc.)
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;; :keys The keys associated with the command.
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;; :args The arguments of the function.
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;; :docstring The docstring of the symbol.
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;; :doc The first line of the dostring.
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;; :comment A comment line just above the sexp, if any.
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;; :fixme A FIXME comment line just above the sexp, if any.
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;;
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;; Let's say we have a defun like this one:
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;;
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;; ;; FIXME update docstring
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;; (defun org-export-latex-lists ()
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;; "Convert lists to LaTeX."
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;; (goto-char (point-min))
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;; (while (re-search-forward org-export-latex-list-beginning-re nil t)
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;; (beginning-of-line)
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;; (insert (org-list-to-latex (org-list-parse-list t)) "\n")))
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;;
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;; And a remember template like:
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;;
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;; (setq org-remember-templates
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;; '((?s "* DEBUG `%:name' (%:args)\n\n%?\n\nFixme: %:fixme\n \
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;; Doc: \"%:doc\"\n\n%a")))
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;;
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;; Then M-x `org-remember' on this sexp will produce this buffer:
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;;
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;; =====================================================================
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;; * DEBUG `org-export-latex-lists' ()
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;;
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;; <== point
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;;
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;; Fixme: update the docstring
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;; Doc: "Convert lists to LaTeX."
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;;
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;; [[file:~/path/file.el::defun%20my-func][Function: my-func]]
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;; =====================================================================
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;;
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;; Put this file into your load-path and the following into your ~/.emacs:
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;; (require 'org-elisp-symbol)
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;;; Code:
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(provide 'org-elisp-symbol)
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(require 'org)
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(org-add-link-type "elisp-symbol" 'org-elisp-symbol-open)
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(add-hook 'org-store-link-functions 'org-elisp-symbol-store-link)
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(defun org-elisp-symbol-open (path)
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"Visit the emacs-lisp elisp-symbol at PATH."
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(let* ((search (when (string-match "::\\(.+\\)\\'" path)
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(match-string 1 path)))
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(path (substring path 0 (match-beginning 0))))
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(org-open-file path t nil search)))
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(defun org-elisp-symbol-store-link ()
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"Store a link to an emacs-lisp elisp-symbol."
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(when (eq major-mode 'emacs-lisp-mode)
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(save-excursion
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(or (looking-at "^(") (beginning-of-defun))
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(looking-at "^(\\([a-z]+\\) \\([^)\n ]+\\) ?\n?[ \t]*\\(?:(\\(.*\\))\\)?")
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(let* ((end (save-excursion
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(save-match-data
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(end-of-defun) (point))))
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(def (match-string 1))
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(name (match-string 2))
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(sym-name (intern-soft name))
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(stype (cond ((commandp sym-name) "Command")
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((functionp sym-name) "Function")
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((user-variable-p sym-name) "User variable")
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((string= def "defvar") "Variable")
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((string= def "defmacro") "Macro")
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((string= def "defun") "Function or command")
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(t "Symbol")))
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(args (if (match-string 3)
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(mapconcat (lambda (a) (unless (string-match "^&" a) a))
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(split-string (match-string 3)) " ")
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"no arg"))
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(docstring (cond ((functionp sym-name)
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(or (documentation sym-name)
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"[no documentation]"))
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((string-match "[Vv]ariable" stype)
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(documentation-property sym-name
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'variable-documentation))
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(t "no documentation")))
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(doc (and (string-match "^\\([^\n]+\\)$" docstring)
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(match-string 1 docstring)))
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(fixme (save-excursion
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(beginning-of-defun) (end-of-defun)
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(if (re-search-forward "^;+ ?FIXME[ :]*\\(.*\\)$" end t)
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(match-string 1) "nothing to fix")))
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(comment (save-excursion
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(beginning-of-defun) (end-of-defun)
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(if (re-search-forward "^;;+ ?\\(.*\\)$" end t)
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(match-string 1) "no comment")))
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keys keys-desc link description)
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(if (equal stype "Command")
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(setq keys (where-is-internal sym-name)
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keys-desc
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(if keys (mapconcat 'key-description keys " ") "none")))
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(setq link (concat "file:" (abbreviate-file-name buffer-file-name)
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"::" def " " name))
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(setq description (concat stype ": " name))
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(org-store-link-props
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:type "elisp-symbol"
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:link link
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:description description
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:def def
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:name name
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:stype stype
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:args args
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:keys keys-desc
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:docstring docstring
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:doc doc
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:fixme fixme
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:comment comment)))))
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(provide 'org-elisp-symbol)
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;;;;##########################################################################
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;;;; User Options, Variables
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;;;;##########################################################################
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;;; org-elisp-symbol.el ends here
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