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"
  38                   (&optional specials defaults columns ignore-malformed))
  39 (declare-function org-entry-properties "org" (&optional pom which))
  40 (declare-function org-tag-alist-to-string "org" (alist &optional skip-key))
  41
  42 ;;;; Customization variables
  43
  44 (defgroup org-complete nil
  45   "Outline-based notes management and organizer."
  46   :tag "Org"
  47   :group 'org)
  48
  49 (defvar org-drawer-regexp)
  50 (defvar org-property-re)
  51 (defvar org-current-tag-alist)
  52
  53 (defun org-thing-at-point ()
  54   "Examine the thing at point and let the caller know what it is.
  55 The return value is a string naming the thing at point."
  56   (let ((beg1 (save-excursion
  57                 (skip-chars-backward "[:alnum:]-_@")
  58                 (point)))
  59         (beg (save-excursion
  60                (skip-chars-backward "a-zA-Z0-9-_:$")
  61                (point)))
  62         (line-to-here (buffer-substring (point-at-bol) (point))))
  63     (cond
  64      ((string-match "\\`[ \t]*#\\+begin: clocktable[ \t]+" line-to-here)
  65       (cons "block-option" "clocktable"))
  66      ((string-match "\\`[ \t]*#\\+begin_src[ \t]+" line-to-here)
  67       (cons "block-option" "src"))
  68      ((save-excursion
  69         (re-search-backward "^[ \t]*#\\+\\([A-Z_]+\\):.*"
  70                             (line-beginning-position) t))
  71       (cons "file-option" (match-string-no-properties 1)))
  72      ((string-match "\\`[ \t]*#\\+[a-zA-Z_]*\\'" line-to-here)
  73       (cons "file-option" nil))
  74      ((equal (char-before beg) ?\[)
  75       (cons "link" nil))
  76      ((equal (char-before beg) ?\\)
  77       (cons "tex" nil))
  78      ((string-match "\\`\\*+[ \t]+\\'"
  79                     (buffer-substring (point-at-bol) beg))
  80       (cons "todo" nil))
  81      ((equal (char-before beg) ?*)
  82       (cons "searchhead" nil))
  83      ((and (equal (char-before beg1) ?:)
  84            (equal (char-after (point-at-bol)) ?*))
  85       (cons "tag" nil))
  86      ((and (equal (char-before beg1) ?:)
  87            (not (equal (char-after (point-at-bol)) ?*))
  88            (save-excursion
  89              (move-beginning-of-line 1)
  90              (skip-chars-backward "[ \t\n]")
  91              ;; org-drawer-regexp matches a whole line but while
  92              ;; looking-back, we just ignore trailing whitespaces
  93              (or (looking-back (substring org-drawer-regexp 0 -1)
  94                                (line-beginning-position))
  95                  (looking-back org-property-re
  96                                (line-beginning-position)))))
  97       (cons "prop" nil))
  98      ((and (equal (char-before beg1) ?:)
  99            (not (equal (char-after (point-at-bol)) ?*)))
 100       (cons "drawer" nil))
 101      (t nil))))
 102
 103 (defun org-command-at-point ()
 104   "Return the qualified name of the Org completion entity at point.
 105 When completing for #+STARTUP, for example, this function returns
 106 \"file-option/startup\"."
 107   (let ((thing (org-thing-at-point)))
 108     (cond
 109      ((string= "file-option" (car thing))
 110       (concat (car thing)
 111               (and (cdr thing) (concat "/" (downcase (cdr thing))))))
 112      ((string= "block-option" (car thing))
 113       (concat (car thing) "/" (downcase (cdr thing))))
 114      (t (car thing)))))
 115
 116 (defun org-parse-arguments ()
 117   "Parse whitespace separated arguments in the current region."
 118   (let ((begin (line-beginning-position))
 119         (end (line-end-position))
 120         begins args)
 121     (save-restriction
 122       (narrow-to-region begin end)
 123       (save-excursion
 124         (goto-char (point-min))
 125         (while (not (eobp))
 126           (skip-chars-forward " \t\n[")
 127           (setq begins (cons (point) begins))
 128           (skip-chars-forward "^ \t\n[")
 129           (setq args (cons (buffer-substring-no-properties
 130                             (car begins) (point))
 131                            args)))
 132         (cons (reverse args) (reverse begins))))))
 133
 134 (defun org-pcomplete-initial ()
 135   "Calls the right completion function for first argument completions."
 136   (ignore
 137    (funcall (or (pcomplete-find-completion-function
 138                  (car (org-thing-at-point)))
 139                 pcomplete-default-completion-function))))
 140
 141 (defvar org-options-keywords)            ; From org.el
 142 (defvar org-element-affiliated-keywords) ; From org-element.el
 143 (declare-function org-get-export-keywords "org" ())
 144 (defun pcomplete/org-mode/file-option ()
 145   "Complete against all valid file options."
 146   (require 'org-element)
 147   (pcomplete-here
 148    (org-pcomplete-case-double
 149     (append (mapcar (lambda (keyword) (concat keyword " "))
 150                     org-options-keywords)
 151             (mapcar (lambda (keyword) (concat keyword ": "))
 152                     org-element-affiliated-keywords)
 153             (let (block-names)
 154               (dolist (name
 155                        '("CENTER" "COMMENT" "EXAMPLE" "EXPORT" "QUOTE" "SRC"
 156                          "VERSE")
 157                        block-names)
 158                 (push (format "END_%s" name) block-names)
 159                 (push (concat "BEGIN_"
 160                               name
 161                               ;; Since language is compulsory in
 162                               ;; export blocks source blocks, add
 163                               ;; a space.
 164                               (and (member name '("EXPORT" "SRC")) " "))
 165                       block-names)
 166                 (push (format "ATTR_%s: " name) block-names)))
 167             (mapcar (lambda (keyword) (concat keyword ": "))
 168                     (org-get-export-keywords))))
 169    (substring pcomplete-stub 2)))
 170
 171 (defun pcomplete/org-mode/file-option/author ()
 172   "Complete arguments for the #+AUTHOR file option."
 173   (pcomplete-here (list user-full-name)))
 174
 175 (defvar org-time-stamp-formats)
 176 (defun pcomplete/org-mode/file-option/date ()
 177   "Complete arguments for the #+DATE file option."
 178   (pcomplete-here (list (format-time-string (car org-time-stamp-formats)))))
 179
 180 (defun pcomplete/org-mode/file-option/email ()
 181   "Complete arguments for the #+EMAIL file option."
 182   (pcomplete-here (list user-mail-address)))
 183
 184 (defvar org-export-exclude-tags)
 185 (defun pcomplete/org-mode/file-option/exclude_tags ()
 186   "Complete arguments for the #+EXCLUDE_TAGS file option."
 187   (require 'ox)
 188   (pcomplete-here
 189    (and org-export-exclude-tags
 190         (list (mapconcat 'identity org-export-exclude-tags " ")))))
 191
 192 (defvar org-file-tags)
 193 (defun pcomplete/org-mode/file-option/filetags ()
 194   "Complete arguments for the #+FILETAGS file option."
 195   (pcomplete-here (and org-file-tags (mapconcat 'identity org-file-tags " "))))
 196
 197 (defvar org-export-default-language)
 198 (defun pcomplete/org-mode/file-option/language ()
 199   "Complete arguments for the #+LANGUAGE file option."
 200   (require 'ox)
 201   (pcomplete-here
 202    (pcomplete-uniqify-list
 203     (list org-export-default-language "en"))))
 204
 205 (defvar org-default-priority)
 206 (defvar org-highest-priority)
 207 (defvar org-lowest-priority)
 208 (defun pcomplete/org-mode/file-option/priorities ()
 209   "Complete arguments for the #+PRIORITIES file option."
 210   (pcomplete-here (list (format "%c %c %c"
 211                                 org-highest-priority
 212                                 org-lowest-priority
 213                                 org-default-priority))))
 214
 215 (defvar org-export-select-tags)
 216 (defun pcomplete/org-mode/file-option/select_tags ()
 217   "Complete arguments for the #+SELECT_TAGS file option."
 218   (require 'ox)
 219   (pcomplete-here
 220    (and org-export-select-tags
 221         (list (mapconcat 'identity org-export-select-tags " ")))))
 222
 223 (defvar org-startup-options)
 224 (defun pcomplete/org-mode/file-option/startup ()
 225   "Complete arguments for the #+STARTUP file option."
 226   (while (pcomplete-here
 227           (let ((opts (pcomplete-uniqify-list
 228                        (mapcar 'car org-startup-options))))
 229             ;; Some options are mutually exclusive, and shouldn't be completed
 230             ;; against if certain other options have already been seen.
 231             (dolist (arg pcomplete-args)
 232               (cond
 233                ((string= arg "hidestars")
 234                 (setq opts (delete "showstars" opts)))))
 235             opts))))
 236
 237 (defun pcomplete/org-mode/file-option/tags ()
 238   "Complete arguments for the #+TAGS file option."
 239   (pcomplete-here
 240    (list (org-tag-alist-to-string org-current-tag-alist))))
 241
 242 (defun pcomplete/org-mode/file-option/title ()
 243   "Complete arguments for the #+TITLE file option."
 244   (pcomplete-here
 245    (let ((visited-file (buffer-file-name (buffer-base-buffer))))
 246      (list (or (and visited-file
 247                     (file-name-sans-extension
 248                      (file-name-nondirectory visited-file)))
 249                (buffer-name (buffer-base-buffer)))))))
 250
 251
 252 (declare-function org-export-backend-options "ox" (cl-x) t)
 253 (defun pcomplete/org-mode/file-option/options ()
 254   "Complete arguments for the #+OPTIONS file option."
 255   (while (pcomplete-here
 256           (pcomplete-uniqify-list
 257            (append
 258             ;; Hard-coded OPTION items always available.
 259             '("H:" "\\n:" "num:" "timestamp:" "arch:" "author:" "c:"
 260               "creator:" "date:" "d:" "email:" "*:" "e:" "::" "f:"
 261               "inline:" "tex:" "p:" "pri:" "':" "-:" "stat:" "^:" "toc:"
 262               "|:" "tags:" "tasks:" "<:" "todo:")
 263             ;; OPTION items from registered back-ends.
 264             (let (items)
 265               (dolist (backend (bound-and-true-p
 266                                 org-export-registered-backends))
 267                 (dolist (option (org-export-backend-options backend))
 268                   (let ((item (nth 2 option)))
 269                     (when item (push (concat item ":") items)))))
 270               items))))))
 271
 272 (defun pcomplete/org-mode/file-option/infojs_opt ()
 273   "Complete arguments for the #+INFOJS_OPT file option."
 274   (while (pcomplete-here
 275           (pcomplete-uniqify-list
 276            (mapcar (lambda (item) (format "%s:" (car item)))
 277                    (bound-and-true-p org-html-infojs-opts-table))))))
 278
 279 (defun pcomplete/org-mode/file-option/bind ()
 280   "Complete arguments for the #+BIND file option, which are variable names."
 281   (let (vars)
 282     (mapatoms
 283      (lambda (a) (if (boundp a) (setq vars (cons (symbol-name a) vars)))))
 284     (pcomplete-here vars)))
 285
 286 (defvar org-link-abbrev-alist-local)
 287 (defvar org-link-abbrev-alist)
 288 (defun pcomplete/org-mode/link ()
 289   "Complete against defined #+LINK patterns."
 290   (pcomplete-here
 291    (pcomplete-uniqify-list
 292     (copy-sequence
 293      (append (mapcar 'car org-link-abbrev-alist-local)
 294              (mapcar 'car org-link-abbrev-alist))))))
 295
 296 (defvar org-entities)
 297 (defun pcomplete/org-mode/tex ()
 298   "Complete against TeX-style HTML entity names."
 299   (require 'org-entities)
 300   (while (pcomplete-here
 301           (pcomplete-uniqify-list (remove nil (mapcar 'car-safe org-entities)))
 302           (substring pcomplete-stub 1))))
 303
 304 (defvar org-todo-keywords-1)
 305 (defun pcomplete/org-mode/todo ()
 306   "Complete against known TODO keywords."
 307   (pcomplete-here (pcomplete-uniqify-list (copy-sequence org-todo-keywords-1))))
 308
 309 (defvar org-todo-line-regexp)
 310 (defun pcomplete/org-mode/searchhead ()
 311   "Complete against all headings.
 312 This needs more work, to handle headings with lots of spaces in them."
 313   (while
 314       (pcomplete-here
 315        (save-excursion
 316          (goto-char (point-min))
 317          (let (tbl)
 318            (let ((case-fold-search nil))
 319              (while (re-search-forward org-todo-line-regexp nil t)
 320                (push (org-make-org-heading-search-string
 321                       (match-string-no-properties 3))
 322                      tbl)))
 323            (pcomplete-uniqify-list tbl)))
 324        (substring pcomplete-stub 1))))
 325
 326 (defun pcomplete/org-mode/tag ()
 327   "Complete a tag name.  Omit tags already set."
 328   (while (pcomplete-here
 329           (mapcar (lambda (x) (concat x ":"))
 330                   (let ((lst (pcomplete-uniqify-list
 331                               (or (remq
 332                                    nil
 333                                    (mapcar (lambda (x) (org-string-nw-p (car x)))
 334                                            org-current-tag-alist))
 335                                   (mapcar #'car (org-get-buffer-tags))))))
 336                     (dolist (tag (org-get-tags))
 337                       (setq lst (delete tag lst)))
 338                     lst))
 339           (and (string-match ".*:" pcomplete-stub)
 340                (substring pcomplete-stub (match-end 0))))))
 341
 342 (defun pcomplete/org-mode/prop ()
 343   "Complete a property name.  Omit properties already set."
 344   (pcomplete-here
 345    (mapcar (lambda (x)
 346              (concat x ": "))
 347            (let ((lst (pcomplete-uniqify-list
 348                        (copy-sequence
 349                         (org-buffer-property-keys nil t t t)))))
 350              (dolist (prop (org-entry-properties))
 351                (setq lst (delete (car prop) lst)))
 352              lst))
 353    (substring pcomplete-stub 1)))
 354
 355 (defun pcomplete/org-mode/block-option/src ()
 356   "Complete the arguments of a begin_src block.
 357 Complete a language in the first field, the header arguments and switches."
 358   (pcomplete-here
 359    (mapcar
 360     (lambda(x) (symbol-name (nth 3 x)))
 361     (cdr (car (cdr (memq :key-type (plist-get
 362                                     (symbol-plist
 363                                      'org-babel-load-languages)
 364                                     'custom-type)))))))
 365   (while (pcomplete-here
 366           '("-n" "-r" "-l"
 367             ":cache" ":colnames" ":comments" ":dir" ":eval" ":exports"
 368             ":file" ":hlines" ":no-expand" ":noweb" ":results" ":rownames"
 369             ":session" ":shebang" ":tangle" ":tangle-mode" ":var"))))
 370
 371 (defun pcomplete/org-mode/block-option/clocktable ()
 372   "Complete keywords in a clocktable line."
 373   (while (pcomplete-here '(":maxlevel" ":scope" ":lang"
 374                            ":tstart" ":tend" ":block" ":step"
 375                            ":stepskip0" ":fileskip0"
 376                            ":emphasize" ":link" ":narrow" ":indent"
 377                            ":tcolumns" ":level" ":compact" ":timestamp"
 378                            ":formula" ":formatter" ":wstart" ":mstart"))))
 379
 380 (defun org-pcomplete-case-double (list)
 381   "Return list with both upcase and downcase version of all strings in LIST."
 382   (let (e res)
 383     (while (setq e (pop list))
 384       (setq res (cons (downcase e) (cons (upcase e) res))))
 385     (nreverse res)))
 386
 387 ;;;; Finish up
 388
 389 (provide 'org-pcomplete)
 390
 391 ;;; org-pcomplete.el ends here