lisp/org-pcomplete.el

   1 ;;; org-pcomplete.el --- In-buffer Completion Code -*- lexical-binding: t; -*-
   2
   3 ;; Copyright (C) 2004-2017 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 (require 'org-macs)
  31 (require 'org-compat)
  32 (require 'pcomplete)
  33
  34 (declare-function org-make-org-heading-search-string "org" (&optional string))
  35 (declare-function org-get-buffer-tags "org" ())
  36 (declare-function org-get-tags "org" ())
  37 (declare-function org-buffer-property-keys "org" (&optional specials defaults columns))
  38 (declare-function org-entry-properties "org" (&optional pom which))
  39 (declare-function org-tag-alist-to-string "org" (alist &optional skip-key))
  40
  41 ;;;; Customization variables
  42
  43 (defgroup org-complete nil
  44   "Outline-based notes management and organizer."
  45   :tag "Org"
  46   :group 'org)
  47
  48 (defvar org-drawer-regexp)
  49 (defvar org-property-re)
  50 (defvar org-current-tag-alist)
  51
  52 (defun org-thing-at-point ()
  53   "Examine the thing at point and let the caller know what it is.
  54 The return value is a string naming the thing at point."
  55   (let ((beg1 (save-excursion
  56                 (skip-chars-backward "[:alnum:]-_@")
  57                 (point)))
  58         (beg (save-excursion
  59                (skip-chars-backward "a-zA-Z0-9-_:$")
  60                (point)))
  61         (line-to-here (buffer-substring (point-at-bol) (point))))
  62     (cond
  63      ((string-match "\\`[ \t]*#\\+begin: clocktable[ \t]+" line-to-here)
  64       (cons "block-option" "clocktable"))
  65      ((string-match "\\`[ \t]*#\\+begin_src[ \t]+" line-to-here)
  66       (cons "block-option" "src"))
  67      ((save-excursion
  68         (re-search-backward "^[ \t]*#\\+\\([A-Z_]+\\):.*"
  69                             (line-beginning-position) t))
  70       (cons "file-option" (match-string-no-properties 1)))
  71      ((string-match "\\`[ \t]*#\\+[a-zA-Z_]*\\'" line-to-here)
  72       (cons "file-option" nil))
  73      ((equal (char-before beg) ?\[)
  74       (cons "link" nil))
  75      ((equal (char-before beg) ?\\)
  76       (cons "tex" nil))
  77      ((string-match "\\`\\*+[ \t]+\\'"
  78                     (buffer-substring (point-at-bol) beg))
  79       (cons "todo" nil))
  80      ((equal (char-before beg) ?*)
  81       (cons "searchhead" nil))
  82      ((and (equal (char-before beg1) ?:)
  83            (equal (char-after (point-at-bol)) ?*))
  84       (cons "tag" nil))
  85      ((and (equal (char-before beg1) ?:)
  86            (not (equal (char-after (point-at-bol)) ?*))
  87            (save-excursion
  88              (move-beginning-of-line 1)
  89              (skip-chars-backward "[ \t\n]")
  90              ;; org-drawer-regexp matches a whole line but while
  91              ;; looking-back, we just ignore trailing whitespaces
  92              (or (looking-back (substring org-drawer-regexp 0 -1)
  93                                (line-beginning-position))
  94                  (looking-back org-property-re
  95                                (line-beginning-position)))))
  96       (cons "prop" nil))
  97      ((and (equal (char-before beg1) ?:)
  98            (not (equal (char-after (point-at-bol)) ?*)))
  99       (cons "drawer" nil))
 100      (t nil))))
 101
 102 (defun org-command-at-point ()
 103   "Return the qualified name of the Org completion entity at point.
 104 When completing for #+STARTUP, for example, this function returns
 105 \"file-option/startup\"."
 106   (let ((thing (org-thing-at-point)))
 107     (cond
 108      ((string= "file-option" (car thing))
 109       (concat (car thing)
 110               (and (cdr thing) (concat "/" (downcase (cdr thing))))))
 111      ((string= "block-option" (car thing))
 112       (concat (car thing) "/" (downcase (cdr thing))))
 113      (t (car thing)))))
 114
 115 (defun org-parse-arguments ()
 116   "Parse whitespace separated arguments in the current region."
 117   (let ((begin (line-beginning-position))
 118         (end (line-end-position))
 119         begins args)
 120     (save-restriction
 121       (narrow-to-region begin end)
 122       (save-excursion
 123         (goto-char (point-min))
 124         (while (not (eobp))
 125           (skip-chars-forward " \t\n[")
 126           (setq begins (cons (point) begins))
 127           (skip-chars-forward "^ \t\n[")
 128           (setq args (cons (buffer-substring-no-properties
 129                             (car begins) (point))
 130                            args)))
 131         (cons (reverse args) (reverse begins))))))
 132
 133 (defun org-pcomplete-initial ()
 134   "Calls the right completion function for first argument completions."
 135   (ignore
 136    (funcall (or (pcomplete-find-completion-function
 137                  (car (org-thing-at-point)))
 138                 pcomplete-default-completion-function))))
 139
 140 (defvar org-options-keywords)            ; From org.el
 141 (defvar org-element-affiliated-keywords) ; From org-element.el
 142 (declare-function org-get-export-keywords "org" ())
 143 (defun pcomplete/org-mode/file-option ()
 144   "Complete against all valid file options."
 145   (require 'org-element)
 146   (pcomplete-here
 147    (org-pcomplete-case-double
 148     (append (mapcar (lambda (keyword) (concat keyword " "))
 149                     org-options-keywords)
 150             (mapcar (lambda (keyword) (concat keyword ": "))
 151                     org-element-affiliated-keywords)
 152             (let (block-names)
 153               (dolist (name
 154                        '("CENTER" "COMMENT" "EXAMPLE" "EXPORT" "QUOTE" "SRC"
 155                          "VERSE")
 156                        block-names)
 157                 (push (format "END_%s" name) block-names)
 158                 (push (concat "BEGIN_"
 159                               name
 160                               ;; Since language is compulsory in
 161                               ;; export blocks source blocks, add
 162                               ;; a space.
 163                               (and (member name '("EXPORT" "SRC")) " "))
 164                       block-names)
 165                 (push (format "ATTR_%s: " name) block-names)))
 166             (mapcar (lambda (keyword) (concat keyword ": "))
 167                     (org-get-export-keywords))))
 168    (substring pcomplete-stub 2)))
 169
 170 (defun pcomplete/org-mode/file-option/author ()
 171   "Complete arguments for the #+AUTHOR file option."
 172   (pcomplete-here (list user-full-name)))
 173
 174 (defvar org-time-stamp-formats)
 175 (defun pcomplete/org-mode/file-option/date ()
 176   "Complete arguments for the #+DATE file option."
 177   (pcomplete-here (list (format-time-string (car org-time-stamp-formats)))))
 178
 179 (defun pcomplete/org-mode/file-option/email ()
 180   "Complete arguments for the #+EMAIL file option."
 181   (pcomplete-here (list user-mail-address)))
 182
 183 (defvar org-export-exclude-tags)
 184 (defun pcomplete/org-mode/file-option/exclude_tags ()
 185   "Complete arguments for the #+EXCLUDE_TAGS file option."
 186   (require 'ox)
 187   (pcomplete-here
 188    (and org-export-exclude-tags
 189         (list (mapconcat 'identity org-export-exclude-tags " ")))))
 190
 191 (defvar org-file-tags)
 192 (defun pcomplete/org-mode/file-option/filetags ()
 193   "Complete arguments for the #+FILETAGS file option."
 194   (pcomplete-here (and org-file-tags (mapconcat 'identity org-file-tags " "))))
 195
 196 (defvar org-export-default-language)
 197 (defun pcomplete/org-mode/file-option/language ()
 198   "Complete arguments for the #+LANGUAGE file option."
 199   (require 'ox)
 200   (pcomplete-here
 201    (pcomplete-uniqify-list
 202     (list org-export-default-language "en"))))
 203
 204 (defvar org-default-priority)
 205 (defvar org-highest-priority)
 206 (defvar org-lowest-priority)
 207 (defun pcomplete/org-mode/file-option/priorities ()
 208   "Complete arguments for the #+PRIORITIES file option."
 209   (pcomplete-here (list (format "%c %c %c"
 210                                 org-highest-priority
 211                                 org-lowest-priority
 212                                 org-default-priority))))
 213
 214 (defvar org-export-select-tags)
 215 (defun pcomplete/org-mode/file-option/select_tags ()
 216   "Complete arguments for the #+SELECT_TAGS file option."
 217   (require 'ox)
 218   (pcomplete-here
 219    (and org-export-select-tags
 220         (list (mapconcat 'identity org-export-select-tags " ")))))
 221
 222 (defvar org-startup-options)
 223 (defun pcomplete/org-mode/file-option/startup ()
 224   "Complete arguments for the #+STARTUP file option."
 225   (while (pcomplete-here
 226           (let ((opts (pcomplete-uniqify-list
 227                        (mapcar 'car org-startup-options))))
 228             ;; Some options are mutually exclusive, and shouldn't be completed
 229             ;; against if certain other options have already been seen.
 230             (dolist (arg pcomplete-args)
 231               (cond
 232                ((string= arg "hidestars")
 233                 (setq opts (delete "showstars" opts)))))
 234             opts))))
 235
 236 (defun pcomplete/org-mode/file-option/tags ()
 237   "Complete arguments for the #+TAGS file option."
 238   (pcomplete-here
 239    (list (org-tag-alist-to-string org-current-tag-alist))))
 240
 241 (defun pcomplete/org-mode/file-option/title ()
 242   "Complete arguments for the #+TITLE file option."
 243   (pcomplete-here
 244    (let ((visited-file (buffer-file-name (buffer-base-buffer))))
 245      (list (or (and visited-file
 246                     (file-name-sans-extension
 247                      (file-name-nondirectory visited-file)))
 248                (buffer-name (buffer-base-buffer)))))))
 249
 250
 251 (declare-function org-export-backend-options "ox" (cl-x) t)
 252 (defun pcomplete/org-mode/file-option/options ()
 253   "Complete arguments for the #+OPTIONS file option."
 254   (while (pcomplete-here
 255           (pcomplete-uniqify-list
 256            (append
 257             ;; Hard-coded OPTION items always available.
 258             '("H:" "\\n:" "num:" "timestamp:" "arch:" "author:" "c:"
 259               "creator:" "date:" "d:" "email:" "*:" "e:" "::" "f:"
 260               "inline:" "tex:" "p:" "pri:" "':" "-:" "stat:" "^:" "toc:"
 261               "|:" "tags:" "tasks:" "<:" "todo:")
 262             ;; OPTION items from registered back-ends.
 263             (let (items)
 264               (dolist (backend (bound-and-true-p
 265                                 org-export-registered-backends))
 266                 (dolist (option (org-export-backend-options backend))
 267                   (let ((item (nth 2 option)))
 268                     (when item (push (concat item ":") items)))))
 269               items))))))
 270
 271 (defun pcomplete/org-mode/file-option/infojs_opt ()
 272   "Complete arguments for the #+INFOJS_OPT file option."
 273   (while (pcomplete-here
 274           (pcomplete-uniqify-list
 275            (mapcar (lambda (item) (format "%s:" (car item)))
 276                    (bound-and-true-p org-html-infojs-opts-table))))))
 277
 278 (defun pcomplete/org-mode/file-option/bind ()
 279   "Complete arguments for the #+BIND file option, which are variable names."
 280   (let (vars)
 281     (mapatoms
 282      (lambda (a) (if (boundp a) (setq vars (cons (symbol-name a) vars)))))
 283     (pcomplete-here vars)))
 284
 285 (defvar org-link-abbrev-alist-local)
 286 (defvar org-link-abbrev-alist)
 287 (defun pcomplete/org-mode/link ()
 288   "Complete against defined #+LINK patterns."
 289   (pcomplete-here
 290    (pcomplete-uniqify-list
 291     (copy-sequence
 292      (append (mapcar 'car org-link-abbrev-alist-local)
 293              (mapcar 'car org-link-abbrev-alist))))))
 294
 295 (defvar org-entities)
 296 (defun pcomplete/org-mode/tex ()
 297   "Complete against TeX-style HTML entity names."
 298   (require 'org-entities)
 299   (while (pcomplete-here
 300           (pcomplete-uniqify-list (remove nil (mapcar 'car-safe org-entities)))
 301           (substring pcomplete-stub 1))))
 302
 303 (defvar org-todo-keywords-1)
 304 (defun pcomplete/org-mode/todo ()
 305   "Complete against known TODO keywords."
 306   (pcomplete-here (pcomplete-uniqify-list (copy-sequence org-todo-keywords-1))))
 307
 308 (defvar org-todo-line-regexp)
 309 (defun pcomplete/org-mode/searchhead ()
 310   "Complete against all headings.
 311 This needs more work, to handle headings with lots of spaces in them."
 312   (while
 313       (pcomplete-here
 314        (save-excursion
 315          (goto-char (point-min))
 316          (let (tbl)
 317            (let ((case-fold-search nil))
 318              (while (re-search-forward org-todo-line-regexp nil t)
 319                (push (org-make-org-heading-search-string
 320                       (match-string-no-properties 3))
 321                      tbl)))
 322            (pcomplete-uniqify-list tbl)))
 323        (substring pcomplete-stub 1))))
 324
 325 (defun pcomplete/org-mode/tag ()
 326   "Complete a tag name.  Omit tags already set."
 327   (while (pcomplete-here
 328           (mapcar (lambda (x) (concat x ":"))
 329                   (let ((lst (pcomplete-uniqify-list
 330                               (or (remq
 331                                    nil
 332                                    (mapcar (lambda (x) (org-string-nw-p (car x)))
 333                                            org-current-tag-alist))
 334                                   (mapcar #'car (org-get-buffer-tags))))))
 335                     (dolist (tag (org-get-tags))
 336                       (setq lst (delete tag lst)))
 337                     lst))
 338           (and (string-match ".*:" pcomplete-stub)
 339                (substring pcomplete-stub (match-end 0))))))
 340
 341 (defun pcomplete/org-mode/prop ()
 342   "Complete a property name.  Omit properties already set."
 343   (pcomplete-here
 344    (mapcar (lambda (x)
 345              (concat x ": "))
 346            (let ((lst (pcomplete-uniqify-list
 347                        (copy-sequence (org-buffer-property-keys nil t t)))))
 348              (dolist (prop (org-entry-properties))
 349                (setq lst (delete (car prop) lst)))
 350              lst))
 351    (substring pcomplete-stub 1)))
 352
 353 (defun pcomplete/org-mode/block-option/src ()
 354   "Complete the arguments of a begin_src block.
 355 Complete a language in the first field, the header arguments and switches."
 356   (pcomplete-here
 357    (mapcar
 358     (lambda(x) (symbol-name (nth 3 x)))
 359     (cdr (car (cdr (memq :key-type (plist-get
 360                                     (symbol-plist
 361                                      'org-babel-load-languages)
 362                                     'custom-type)))))))
 363   (while (pcomplete-here
 364           '("-n" "-r" "-l"
 365             ":cache" ":colnames" ":comments" ":dir" ":eval" ":exports"
 366             ":file" ":hlines" ":no-expand" ":noweb" ":results" ":rownames"
 367             ":session" ":shebang" ":tangle" ":tangle-mode" ":var"))))
 368
 369 (defun pcomplete/org-mode/block-option/clocktable ()
 370   "Complete keywords in a clocktable line."
 371   (while (pcomplete-here '(":maxlevel" ":scope" ":lang"
 372                            ":tstart" ":tend" ":block" ":step"
 373                            ":stepskip0" ":fileskip0"
 374                            ":emphasize" ":link" ":narrow" ":indent"
 375                            ":tcolumns" ":level" ":compact" ":timestamp"
 376                            ":formula" ":formatter" ":wstart" ":mstart"))))
 377
 378 (defun org-pcomplete-case-double (list)
 379   "Return list with both upcase and downcase version of all strings in LIST."
 380   (let (e res)
 381     (while (setq e (pop list))
 382       (setq res (cons (downcase e) (cons (upcase e) res))))
 383     (nreverse res)))
 384
 385 ;;;; Finish up
 386
 387 (provide 'org-pcomplete)
 388
 389 ;;; org-pcomplete.el ends here