code.delx.au - gnu-emacs/blob - lisp/org/org-pcomplete.el

   1 ;;; org-pcomplete.el --- In-buffer completion code
   2
   3 ;; Copyright (C) 2004-2013 Free Software Foundation, Inc.
   4 ;;
   5 ;; Author: Carsten Dominik <carsten at orgmode dot org>
   6 ;;         John Wiegley <johnw at gnu dot org>
   7 ;; Keywords: outlines, hypermedia, calendar, wp
   8 ;; Homepage: http://orgmode.org
   9 ;;
  10 ;; This file is part of GNU Emacs.
  11 ;;
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  25 ;;
  26 ;;; Code:
  27
  28 ;;;; Require other packages
  29
  30 (eval-when-compile
  31   (require 'cl))
  32
  33 (require 'org-macs)
  34 (require 'org-compat)
  35 (require 'pcomplete)
  36
  37 (declare-function org-split-string "org" (string &optional separators))
  38 (declare-function org-get-current-options "org-exp" ())
  39 (declare-function org-make-org-heading-search-string "org"
  40                   (&optional string heading))
  41 (declare-function org-get-buffer-tags "org" ())
  42 (declare-function org-get-tags "org" ())
  43 (declare-function org-buffer-property-keys "org"
  44                   (&optional include-specials include-defaults include-columns))
  45 (declare-function org-entry-properties "org" (&optional pom which specific))
  46
  47 ;;;; Customization variables
  48
  49 ;; Unused.  Cf org-completion.
  50 (defgroup org-complete nil
  51   "Outline-based notes management and organizer."
  52   :tag "Org"
  53   :group 'org)
  54
  55 (defvar org-drawer-regexp)
  56 (defvar org-property-re)
  57
  58 (defun org-thing-at-point ()
  59   "Examine the thing at point and let the caller know what it is.
  60 The return value is a string naming the thing at point."
  61   (let ((beg1 (save-excursion
  62                 (skip-chars-backward (org-re "[:alnum:]-_@"))
  63                 (point)))
  64         (beg (save-excursion
  65                (skip-chars-backward "a-zA-Z0-9-_:$")
  66                (point)))
  67         (line-to-here (buffer-substring (point-at-bol) (point))))
  68     (cond
  69      ((string-match "\\`[ \t]*#\\+begin: clocktable[ \t]+" line-to-here)
  70       (cons "block-option" "clocktable"))
  71      ((string-match "\\`[ \t]*#\\+begin_src[ \t]+" line-to-here)
  72       (cons "block-option" "src"))
  73      ((save-excursion
  74         (re-search-backward "^[ \t]*#\\+\\([A-Z_]+\\):.*"
  75                             (line-beginning-position) t))
  76       (cons "file-option" (match-string-no-properties 1)))
  77      ((string-match "\\`[ \t]*#\\+[a-zA-Z_]*\\'" line-to-here)
  78       (cons "file-option" nil))
  79      ((equal (char-before beg) ?\[)
  80       (cons "link" nil))
  81      ((equal (char-before beg) ?\\)
  82       (cons "tex" nil))
  83      ((string-match "\\`\\*+[ \t]+\\'"
  84                     (buffer-substring (point-at-bol) beg))
  85       (cons "todo" nil))
  86      ((equal (char-before beg) ?*)
  87       (cons "searchhead" nil))
  88      ((and (equal (char-before beg1) ?:)
  89            (equal (char-after (point-at-bol)) ?*))
  90       (cons "tag" nil))
  91      ((and (equal (char-before beg1) ?:)
  92            (not (equal (char-after (point-at-bol)) ?*))
  93            (save-excursion
  94              (move-beginning-of-line 1)
  95              (skip-chars-backward "[ \t\n]")
  96              ;; org-drawer-regexp matches a whole line but while
  97              ;; looking-back, we just ignore trailing whitespaces
  98              (or (org-looking-back (substring org-drawer-regexp 0 -1))
  99                  (org-looking-back org-property-re))))
 100       (cons "prop" nil))
 101      ((and (equal (char-before beg1) ?:)
 102            (not (equal (char-after (point-at-bol)) ?*)))
 103       (cons "drawer" nil))
 104      (t nil))))
 105
 106 (defun org-command-at-point ()
 107   "Return the qualified name of the Org completion entity at point.
 108 When completing for #+STARTUP, for example, this function returns
 109 \"file-option/startup\"."
 110   (let ((thing (org-thing-at-point)))
 111     (cond
 112      ((string= "file-option" (car thing))
 113       (concat (car thing) "/" (downcase (cdr thing))))
 114      ((string= "block-option" (car thing))
 115       (concat (car thing) "/" (downcase (cdr thing))))
 116      (t
 117       (car thing)))))
 118
 119 (defun org-parse-arguments ()
 120   "Parse whitespace separated arguments in the current region."
 121   (let ((begin (line-beginning-position))
 122         (end (line-end-position))
 123         begins args)
 124     (save-restriction
 125       (narrow-to-region begin end)
 126       (save-excursion
 127         (goto-char (point-min))
 128         (while (not (eobp))
 129           (skip-chars-forward " \t\n[")
 130           (setq begins (cons (point) begins))
 131           (skip-chars-forward "^ \t\n[")
 132           (setq args (cons (buffer-substring-no-properties
 133                             (car begins) (point))
 134                            args)))
 135         (cons (reverse args) (reverse begins))))))
 136
 137 (defun org-pcomplete-initial ()
 138   "Calls the right completion function for first argument completions."
 139   (ignore
 140    (funcall (or (pcomplete-find-completion-function
 141                  (car (org-thing-at-point)))
 142                 pcomplete-default-completion-function))))
 143
 144 (defvar org-options-keywords)                ; From org.el
 145 (defvar org-additional-option-like-keywords) ; From org.el
 146 (defun pcomplete/org-mode/file-option ()
 147   "Complete against all valid file options."
 148   (require 'org-exp)
 149   (pcomplete-here
 150    (org-pcomplete-case-double
 151     (mapcar (lambda (x)
 152               (if (= ?: (aref x (1- (length x))))
 153                   (concat x " ")
 154                 x))
 155             (append org-options-keywords
 156                     org-additional-option-like-keywords)))
 157    (substring pcomplete-stub 2)))
 158
 159 (defvar org-startup-options)
 160 (defun pcomplete/org-mode/file-option/startup ()
 161   "Complete arguments for the #+STARTUP file option."
 162   (while (pcomplete-here
 163           (let ((opts (pcomplete-uniqify-list
 164                        (mapcar 'car org-startup-options))))
 165             ;; Some options are mutually exclusive, and shouldn't be completed
 166             ;; against if certain other options have already been seen.
 167             (dolist (arg pcomplete-args)
 168               (cond
 169                ((string= arg "hidestars")
 170                 (setq opts (delete "showstars" opts)))))
 171             opts))))
 172
 173 (defmacro pcomplete/org-mode/file-option/x (option)
 174   "Complete arguments for OPTION."
 175   `(while
 176        (pcomplete-here
 177         (pcomplete-uniqify-list
 178          (delq nil
 179                (mapcar (lambda(o)
 180                          (when (string-match (concat "^[ \t]*#\\+"
 181                                                      ,option ":[ \t]+\\(.*\\)[ \t]*$") o)
 182                            (match-string 1 o)))
 183                        (split-string (org-get-current-options) "\n")))))))
 184
 185 (defun pcomplete/org-mode/file-option/options ()
 186   "Complete arguments for the #+OPTIONS file option."
 187   (pcomplete/org-mode/file-option/x "OPTIONS"))
 188
 189 (defun pcomplete/org-mode/file-option/title ()
 190   "Complete arguments for the #+TITLE file option."
 191   (pcomplete/org-mode/file-option/x "TITLE"))
 192
 193 (defun pcomplete/org-mode/file-option/author ()
 194   "Complete arguments for the #+AUTHOR file option."
 195   (pcomplete/org-mode/file-option/x "AUTHOR"))
 196
 197 (defun pcomplete/org-mode/file-option/email ()
 198   "Complete arguments for the #+EMAIL file option."
 199   (pcomplete/org-mode/file-option/x "EMAIL"))
 200
 201 (defun pcomplete/org-mode/file-option/date ()
 202   "Complete arguments for the #+DATE file option."
 203   (pcomplete/org-mode/file-option/x "DATE"))
 204
 205 (defun pcomplete/org-mode/file-option/bind ()
 206   "Complete arguments for the #+BIND file option, which are variable names."
 207   (let (vars)
 208     (mapatoms
 209      (lambda (a) (if (boundp a) (setq vars (cons (symbol-name a) vars)))))
 210     (pcomplete-here vars)))
 211
 212 (defvar org-link-abbrev-alist-local)
 213 (defvar org-link-abbrev-alist)
 214 (defun pcomplete/org-mode/link ()
 215   "Complete against defined #+LINK patterns."
 216   (pcomplete-here
 217    (pcomplete-uniqify-list
 218     (copy-sequence
 219      (append (mapcar 'car org-link-abbrev-alist-local)
 220              (mapcar 'car org-link-abbrev-alist))))))
 221
 222 (defvar org-entities)
 223 (defun pcomplete/org-mode/tex ()
 224   "Complete against TeX-style HTML entity names."
 225   (require 'org-entities)
 226   (while (pcomplete-here
 227           (pcomplete-uniqify-list (remove nil (mapcar 'car-safe org-entities)))
 228           (substring pcomplete-stub 1))))
 229
 230 (defvar org-todo-keywords-1)
 231 (defun pcomplete/org-mode/todo ()
 232   "Complete against known TODO keywords."
 233   (pcomplete-here (pcomplete-uniqify-list (copy-sequence org-todo-keywords-1))))
 234
 235 (defvar org-todo-line-regexp)
 236 (defun pcomplete/org-mode/searchhead ()
 237   "Complete against all headings.
 238 This needs more work, to handle headings with lots of spaces in them."
 239   (while
 240       (pcomplete-here
 241        (save-excursion
 242          (goto-char (point-min))
 243          (let (tbl)
 244            (while (re-search-forward org-todo-line-regexp nil t)
 245              (push (org-make-org-heading-search-string
 246                     (match-string-no-properties 3) t)
 247                    tbl))
 248            (pcomplete-uniqify-list tbl)))
 249        (substring pcomplete-stub 1))))
 250
 251 (defvar org-tag-alist)
 252 (defun pcomplete/org-mode/tag ()
 253   "Complete a tag name.  Omit tags already set."
 254   (while (pcomplete-here
 255           (mapcar (lambda (x)
 256                     (concat x ":"))
 257                   (let ((lst (pcomplete-uniqify-list
 258                               (or (remove
 259                                    nil
 260                                    (mapcar (lambda (x)
 261                                              (and (stringp (car x)) (car x)))
 262                                            org-tag-alist))
 263                                   (mapcar 'car (org-get-buffer-tags))))))
 264                     (dolist (tag (org-get-tags))
 265                       (setq lst (delete tag lst)))
 266                     lst))
 267           (and (string-match ".*:" pcomplete-stub)
 268                (substring pcomplete-stub (match-end 0))))))
 269
 270 (defun pcomplete/org-mode/prop ()
 271   "Complete a property name.  Omit properties already set."
 272   (pcomplete-here
 273    (mapcar (lambda (x)
 274              (concat x ": "))
 275            (let ((lst (pcomplete-uniqify-list
 276                        (copy-sequence
 277                         (org-buffer-property-keys nil t t)))))
 278              (dolist (prop (org-entry-properties))
 279                (setq lst (delete (car prop) lst)))
 280              lst))
 281    (substring pcomplete-stub 1)))
 282
 283 (defvar org-drawers)
 284
 285 (defun pcomplete/org-mode/drawer ()
 286   "Complete a drawer name."
 287   (let ((spc (save-excursion
 288                (move-beginning-of-line 1)
 289                (looking-at "^\\([ \t]*\\):")
 290                (match-string 1)))
 291         (cpllist (mapcar (lambda (x) (concat x ": ")) org-drawers)))
 292     (pcomplete-here cpllist
 293                     (substring pcomplete-stub 1)
 294                     (unless (or (not (delete
 295                                       nil
 296                                       (mapcar (lambda(x)
 297                                                 (string-match (substring pcomplete-stub 1) x))
 298                                               cpllist)))
 299                                 (looking-at "[ \t]*\n.*:END:"))
 300                       (save-excursion (insert "\n" spc ":END:"))))))
 301
 302 (defun pcomplete/org-mode/block-option/src ()
 303   "Complete the arguments of a begin_src block.
 304 Complete a language in the first field, the header arguments and switches."
 305   (pcomplete-here
 306    (mapcar
 307     (lambda(x) (symbol-name (nth 3 x)))
 308     (cdr (car (cdr (memq :key-type (plist-get
 309                                     (symbol-plist
 310                                      'org-babel-load-languages)
 311                                     'custom-type)))))))
 312   (while (pcomplete-here
 313           '("-n" "-r" "-l"
 314             ":cache" ":colnames" ":comments" ":dir" ":eval" ":exports"
 315             ":file" ":hlines" ":no-expand" ":noweb" ":results" ":rownames"
 316             ":session" ":shebang" ":tangle" ":var"))))
 317
 318 (defun pcomplete/org-mode/block-option/clocktable ()
 319   "Complete keywords in a clocktable line."
 320   (while (pcomplete-here '(":maxlevel" ":scope"
 321                            ":tstart" ":tend" ":block" ":step"
 322                            ":stepskip0" ":fileskip0"
 323                            ":emphasize" ":link" ":narrow" ":indent"
 324                            ":tcolumns" ":level" ":compact" ":timestamp"
 325                            ":formula" ":formatter"))))
 326
 327 (defun org-pcomplete-case-double (list)
 328   "Return list with both upcase and downcase version of all strings in LIST."
 329   (let (e res)
 330     (while (setq e (pop list))
 331       (setq res (cons (downcase e) (cons (upcase e) res))))
 332     (nreverse res)))
 333
 334 ;;;; Finish up
 335
 336 (provide 'org-pcomplete)
 337
 338 ;;; org-pcomplete.el ends here