Add eldo.el to utils/

eldo.el allows to write documentation from Elisp files in an org file.

utils/eldo.el

@@ -0,0 +1,152 @@
+;;; eldo.el --- Elisp Doc-to-Org converter
+
+;; Copyright (C) 2012  Bastien Guerry
+;;
+;; Author: Bastien Guerry <bzg at gnu dot org>
+;; Keywords: elisp, documentation, org
+;; Homepage: http://orgmode.org
+;;
+;; This file is not 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 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;
+;;; Commentary:
+;;
+;; M-x eldo-make-doc RET will create a file with documentation for hooks,
+;; commands and options, given a subset of *.el files.  Use an .org file
+;; to write the documentation.
+;;
+;; This file is inspired by Nic Ferrier's wikidoc.el, with contributions
+;; from Eric Schulte and Thorsten Jolitz.
+;;
+;;; Todo:
+;;
+;; - refactor and add customizable variables?
+
+(defvar eldo-keymaps nil)
+
+(defvar eldo-git-raw-file
+  "http://orgmode.org/w/?p=org-mode.git;a=blob_plain;f=lisp/%s;hb=HEAD")
+
+(defvar eldo-git-search-string
+  "http://orgmode.org/w/?p=org-mode.git&a=search&h=HEAD&st=commit&s=%s&sr=1")
+
+(defvar eldo-file nil)
+
+(defun eldo-load (dir prefix)
+  "Load Elisp files in DIR with PREFIX."
+  (if (string= (file-name-extension dir) "el")
+      (load-file dir)
+    (dolist (file (directory-files
+		   (expand-file-name dir)
+		   'full (concat (or prefix "") ".*\.el$")))
+      (load-file file))))
+
+(defun eldo-make-doc (dir prefix)
+  "Insert documentation in the current buffer."
+  (interactive "fDirectory or file: \nsPrefix: ")
+  (eldo-load dir prefix)
+  (let (eldo-keymaps hks cmds opts vars funcs)
+    (mapatoms
+     (lambda(a)
+       (when (string-prefix-p prefix (symbol-name a))
+	 (cond ((keymapp a) (setq eldo-keymaps (cons a eldo-keymaps)))
+	       ((string-match "hook$\\|functions$" (symbol-name a))
+		(setq hks (cons a hks)))
+	       ((commandp a) (setq cmds (cons a cmds)))
+	       ((get a 'custom-type) (setq opts (cons a opts)))
+	       ((fboundp a) (setq funcs (cons a funcs)))
+	       (t (setq vars (cons a vars)))))))
+    (find-file (or eldo-file (read-file-name "File: ")))
+    (org-mode)
+    (eldo-write-hooks hks)
+    (eldo-write-commands cmds)
+    (eldo-write-options opts)))
+
+(defun eldo-write-hooks (hooks)
+  "Write hooks documentation in the current buffer."
+  (insert "* Hooks\n")
+  (org-set-property "CUSTOM_ID" "hooks")
+  (dolist (h hooks)
+    (unless (null (find-lisp-object-file-name h 'defvar))
+      (insert "\n\n** " (symbol-name h))
+      (let ((f (file-name-nondirectory (find-lisp-object-file-name h 'defvar)))
+	    (val (replace-regexp-in-string
+		  "\n" "\\\\n"
+		  (prin1-to-string (car (get h 'standard-value)))))
+	    (version (get h 'custom-version))
+	    (d (get h 'variable-documentation)))
+	(if (> (length val) 30) (setq val (concat (substring val 0 30) "...")))
+	(insert
+	 "  ~" val "~\n"
+	 (if version (format "- *Since:* Emacs version %s\n" version) "")
+	 (format (concat "- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
+	 (format (concat "- [[" eldo-git-search-string
+			 "][Find modifications in git logs]]\n\n") (symbol-name h)))
+	(when (stringp d) (insert (eldo-make-verbatim d)))))
+    (org-set-property "CUSTOM_ID" (symbol-name h))
+    (goto-char (point-max))))
+
+(defun eldo-write-commands (commands)
+  "Write commands documentaiton in the current buffer."
+  (insert "\n* Commands\n")
+  (org-set-property "CUSTOM_ID" "commands")
+  (dolist (c commands)
+    (when (find-lisp-object-file-name c 'defun)
+      (let ((f (file-name-nondirectory (find-lisp-object-file-name c 'defun)))
+	    (key (mapconcat 'key-description (where-is-internal c eldo-keymaps) ", "))
+	    (args (help-function-arglist c t))
+	    (d (documentation c)))
+	(insert "\n** " (symbol-name c) (if args (format "  =%s=\n" args) "\n"))
+	(org-set-property "CUSTOM_ID" (symbol-name c))
+	(insert
+	 (if (and key (not (string= key ""))) (format "\n- *Access:* ~%s~" key) "")
+	 (format (concat "\n- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
+	 (format (concat "- [[" eldo-git-search-string
+			 "][Find modifications in git logs]]\n\n") (symbol-name c)))
+	(when (stringp d) (insert (eldo-make-verbatim d))))
+      (goto-char (point-max)))))
+
+(defun eldo-write-options (options)
+  "Write options documentation in the current buffer."
+  (insert "\n* Options\n")
+  (org-set-property "CUSTOM_ID" "options")
+  (dolist (o options)
+    (when (find-lisp-object-file-name o 'defvar)
+      (insert "\n\n** " (symbol-name o))
+      (let ((f (file-name-nondirectory (find-lisp-object-file-name o 'defvar)))
+	    (val (replace-regexp-in-string
+		  "\n" "\\\\n"
+		  (prin1-to-string (car (get o 'standard-value)))))
+	    (version (get o 'custom-version))
+	    (type (prin1-to-string (get o 'custom-type)))
+	    (d (get o 'variable-documentation)))
+	(if (> (length val) 30) (setq val (concat (substring val 0 30) "...")))
+	(if (> (length type) 30) (setq type (concat (substring type 0 30) "...")))
+	(insert
+	 "  ~" val "~\n\n"
+	 (format "- *Type:* %s\n" type)
+	 (if version (format "- *Since:* Emacs version %s\n" version) "")
+	 (format (concat "- *In file:* [[" eldo-git-raw-file "][%s]]\n") f f)
+	 (format (concat "- [[" eldo-git-search-string
+			 "][Find modifications in git logs]]\n\n") (symbol-name o)))
+	(when (stringp d) (insert (eldo-make-verbatim d)))))
+    (org-set-property "CUSTOM_ID" (symbol-name o))
+    (goto-char (point-max))))
+
+(defun eldo-make-verbatim (string)
+  "Convert STRING to a verbatim region in Org."
+  (let ((str (split-string string "\n")))
+    (mapconcat (lambda(s) (concat ": " s)) str "\n")))