mk/eldo.el

   1 ;;; eldo.el --- Elisp Doc-to-Org converter
   2
   3 ;; Copyright (C) 2012--2014  Bastien Guerry
   4 ;;
   5 ;; Author: Bastien Guerry <bzg@gnu.org>
   6 ;; Keywords: elisp, documentation, org
   7 ;; Homepage: http://orgmode.org
   8 ;;
   9 ;; This file is not part of GNU Emacs.
  10 ;;
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  24 ;;
  25 ;;; Commentary:
  26 ;;
  27 ;; M-x eldo-make-doc RET will create a file with documentation for hooks,
  28 ;; commands and options, given a subset of *.el files.  Use an .org file
  29 ;; to write the documentation.
  30 ;;
  31 ;; This file is inspired by Nic Ferrier's wikidoc.el, with contributions
  32 ;; from Eric Schulte and Thorsten Jolitz.
  33 ;;
  34 ;;; Todo:
  35 ;;
  36 ;; - refactor and add customizable variables?
  37
  38 (defvar eldo-keymaps nil)
  39
  40 (defvar eldo-git-raw-file
  41   "http://orgmode.org/w/?p=org-mode.git;a=blob_plain;f=lisp/%s;hb=HEAD")
  42
  43 (defvar eldo-git-search-string
  44   "http://orgmode.org/w/?p=org-mode.git&a=search&h=HEAD&st=commit&s=%s&sr=1")
  45
  46 (defvar eldo-file nil)
  47
  48 (defun eldo-load (dir prefix)
  49   "Load Elisp files in DIR with PREFIX."
  50   (if (string= (file-name-extension dir) "el")
  51       (load-file dir)
  52     (dolist (file (directory-files
  53                    (expand-file-name dir)
  54                    'full (concat (or prefix "") ".*\.el$")))
  55       (load-file file))))
  56
  57 (defun eldo-make-doc (dir prefix)
  58   "Insert documentation in the current buffer."
  59   (interactive "fDirectory or file: \nsPrefix: ")
  60   (eldo-load dir prefix)
  61   (let (eldo-keymaps hks cmds opts vars funcs)
  62     (mapatoms
  63      (lambda(a)
  64        (when (string-prefix-p prefix (symbol-name a))
  65          (cond ((keymapp a) (setq eldo-keymaps (cons a eldo-keymaps)))
  66                ((string-match "hook$\\|functions$" (symbol-name a))
  67                 (setq hks (cons a hks)))
  68                ((commandp a) (setq cmds (cons a cmds)))
  69                ((get a 'custom-type) (setq opts (cons a opts)))
  70                ((fboundp a) (setq funcs (cons a funcs)))
  71                (t (setq vars (cons a vars)))))))
  72     (find-file (or eldo-file (read-file-name "Write to file: ")))
  73     (org-mode)
  74     (eldo-write-hooks hks)
  75     (eldo-write-commands cmds)
  76     (eldo-write-options opts)))
  77
  78 (defun eldo-write-hooks (hooks)
  79   "Write hooks documentation in the current buffer."
  80   (insert "* Hooks\n")
  81   (org-set-property "CUSTOM_ID" "hooks")
  82   (dolist (h hooks)
  83     (unless (null (find-lisp-object-file-name h 'defvar))
  84       (insert "\n\n** " (symbol-name h))
  85       (let ((f (file-name-nondirectory (find-lisp-object-file-name h 'defvar)))
  86             (val (replace-regexp-in-string
  87                   "\n" "\\\\n"
  88                   (prin1-to-string (car (get h 'standard-value)))))
  89             (version (get h 'custom-version))
  90             (d (get h 'variable-documentation)))
  91         (if (> (length val) 30) (setq val (concat (substring val 0 30) "...")))
  92         (insert
  93          " =" val "=\n"
  94          (if version (format "- *Since:* Emacs version %s\n" version) "")
  95          (format (concat "- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
  96          (format (concat "- [[" eldo-git-search-string
  97                          "][Find modifications in git logs]]\n\n") (symbol-name h)))
  98         (when (stringp d) (insert (eldo-make-verbatim d)))))
  99     (org-set-property "CUSTOM_ID" (symbol-name h))
 100     (goto-char (point-max))))
 101
 102 (defun eldo-write-commands (commands)
 103   "Write commands documentaiton in the current buffer."
 104   (insert "\n* Commands\n")
 105   (org-set-property "CUSTOM_ID" "commands")
 106   (dolist (c commands)
 107     (when (find-lisp-object-file-name c 'defun)
 108       (let ((f (file-name-nondirectory (find-lisp-object-file-name c 'defun)))
 109             (key (mapconcat 'key-description (where-is-internal c eldo-keymaps) ", "))
 110             (args (help-function-arglist c t))
 111             (d (documentation c)))
 112         (insert "\n** " (symbol-name c) (if args (format " =%s=\n" args) "\n"))
 113         (org-set-property "CUSTOM_ID" (symbol-name c))
 114         (insert
 115          (if (and key (not (string= key ""))) (format "\n- *Access:* ~%s~" key) "")
 116          (format (concat "\n- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
 117          (format (concat "- [[" eldo-git-search-string
 118                          "][Find modifications in git logs]]\n\n") (symbol-name c)))
 119         (when (stringp d) (insert (eldo-make-verbatim d))))
 120       (goto-char (point-max)))))
 121
 122 (defun eldo-write-options (options)
 123   "Write options documentation in the current buffer."
 124   (insert "\n* Options\n")
 125   (org-set-property "CUSTOM_ID" "options")
 126   (dolist (o options)
 127     (when (find-lisp-object-file-name o 'defvar)
 128       (insert "\n\n** " (symbol-name o))
 129       (let ((f (file-name-nondirectory (find-lisp-object-file-name o 'defvar)))
 130             (val (replace-regexp-in-string
 131                   "\n" "\\\\n"
 132                   (prin1-to-string (car (get o 'standard-value)))))
 133             (version (get o 'custom-version))
 134             (type (prin1-to-string (get o 'custom-type)))
 135             (d (get o 'variable-documentation)))
 136         (if (> (length val) 30) (setq val (concat (substring val 0 30) "...")))
 137         (if (> (length type) 30) (setq type (concat (substring type 0 30) "...")))
 138         (insert
 139          " =" val "=\n\n"
 140          (format "- *Type:* %s\n" type)
 141          (if version (format "- *Since:* Emacs version %s\n" version) "")
 142          (format (concat "- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
 143          (format (concat "- [[" eldo-git-search-string
 144                          "][Find modifications in git logs]]\n\n") (symbol-name o)))
 145         (when (stringp d) (insert (eldo-make-verbatim d)))))
 146     (org-set-property "CUSTOM_ID" (symbol-name o))
 147     (goto-char (point-max))))
 148
 149 (defun eldo-make-verbatim (string)
 150   "Convert STRING to a verbatim region in Org."
 151   (let ((str (split-string string "\n")))
 152     (mapconcat (lambda(s) (concat ": " s)) str "\n")))