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653d1554 | 1 | ;;; subword.el --- Handling capitalized subwords in a nomenclature |
0386b551 | 2 | |
73b0cd50 | 3 | ;; Copyright (C) 2004-2011 Free Software Foundation, Inc. |
0386b551 AM |
4 | |
5 | ;; Author: Masatake YAMATO | |
6 | ||
b1fc2b50 GM |
7 | ;; This file is part of GNU Emacs. |
8 | ||
9 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
0386b551 | 10 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
11 | ;; the Free Software Foundation, either version 3 of the License, or |
12 | ;; (at your option) any later version. | |
0386b551 | 13 | |
b1fc2b50 | 14 | ;; GNU Emacs is distributed in the hope that it will be useful, |
0386b551 AM |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
b1fc2b50 | 20 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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21 | |
22 | ;;; Commentary: | |
23 | ||
653d1554 TH |
24 | ;; This package was cc-submode.el before it was recognized being |
25 | ;; useful in general and not tied to C and c-mode at all. | |
26 | ||
0386b551 | 27 | ;; This package provides `subword' oriented commands and a minor mode |
653d1554 | 28 | ;; (`subword-mode') that substitutes the common word handling |
0386b551 AM |
29 | ;; functions with them. |
30 | ||
31 | ;; In spite of GNU Coding Standards, it is popular to name a symbol by | |
32 | ;; mixing uppercase and lowercase letters, e.g. "GtkWidget", | |
33 | ;; "EmacsFrameClass", "NSGraphicsContext", etc. Here we call these | |
34 | ;; mixed case symbols `nomenclatures'. Also, each capitalized (or | |
35 | ;; completely uppercase) part of a nomenclature is called a `subword'. | |
36 | ;; Here are some examples: | |
37 | ||
38 | ;; Nomenclature Subwords | |
39 | ;; =========================================================== | |
40 | ;; GtkWindow => "Gtk" and "Window" | |
41 | ;; EmacsFrameClass => "Emacs", "Frame" and "Class" | |
42 | ;; NSGraphicsContext => "NS", "Graphics" and "Context" | |
43 | ||
44 | ;; The subword oriented commands defined in this package recognize | |
45 | ;; subwords in a nomenclature to move between them and to edit them as | |
46 | ;; words. | |
47 | ||
48 | ;; In the minor mode, all common key bindings for word oriented | |
49 | ;; commands are overridden by the subword oriented commands: | |
50 | ||
51 | ;; Key Word oriented command Subword oriented command | |
52 | ;; ============================================================ | |
a9b76eec TH |
53 | ;; M-f `forward-word' `subword-forward' |
54 | ;; M-b `backward-word' `subword-backward' | |
55 | ;; M-@ `mark-word' `subword-mark' | |
56 | ;; M-d `kill-word' `subword-kill' | |
57 | ;; M-DEL `backward-kill-word' `subword-backward-kill' | |
58 | ;; M-t `transpose-words' `subword-transpose' | |
59 | ;; M-c `capitalize-word' `subword-capitalize' | |
60 | ;; M-u `upcase-word' `subword-upcase' | |
61 | ;; M-l `downcase-word' `subword-downcase' | |
0386b551 AM |
62 | ;; |
63 | ;; Note: If you have changed the key bindings for the word oriented | |
64 | ;; commands in your .emacs or a similar place, the keys you've changed | |
65 | ;; to are also used for the corresponding subword oriented commands. | |
66 | ||
67 | ;; To make the mode turn on automatically, put the following code in | |
68 | ;; your .emacs: | |
69 | ;; | |
70 | ;; (add-hook 'c-mode-common-hook | |
653d1554 | 71 | ;; (lambda () (subword-mode 1))) |
0386b551 AM |
72 | ;; |
73 | ||
74 | ;; Acknowledgment: | |
75 | ;; The regular expressions to detect subwords are mostly based on | |
76 | ;; the old `c-forward-into-nomenclature' originally contributed by | |
77 | ;; Terry_Glanfield dot Southern at rxuk dot xerox dot com. | |
78 | ||
1ddb2ea0 | 79 | ;; TODO: ispell-word. |
0386b551 AM |
80 | |
81 | ;;; Code: | |
82 | ||
653d1554 | 83 | (defvar subword-mode-map |
27558c0d | 84 | (let ((map (make-sparse-keymap))) |
653d1554 TH |
85 | (dolist (cmd '(forward-word backward-word mark-word kill-word |
86 | backward-kill-word transpose-words | |
27558c0d GM |
87 | capitalize-word upcase-word downcase-word)) |
88 | (let ((othercmd (let ((name (symbol-name cmd))) | |
9ee12eee TH |
89 | (string-match "\\([[:alpha:]-]+\\)-word[s]?" name) |
90 | (intern (concat "subword-" (match-string 1 name)))))) | |
653d1554 | 91 | (define-key map (vector 'remap cmd) othercmd))) |
27558c0d | 92 | map) |
653d1554 | 93 | "Keymap used in `subword-mode' minor mode.") |
27558c0d GM |
94 | |
95 | ;;;###autoload | |
653d1554 | 96 | (define-minor-mode subword-mode |
ac6c8639 CY |
97 | "Toggle subword movement and editing (Subword mode). |
98 | With a prefix argument ARG, enable Subword mode if ARG is | |
99 | positive, and disable it otherwise. If called from Lisp, enable | |
100 | the mode if ARG is omitted or nil. | |
101 | ||
102 | Subword mode is a buffer-local minor mode. Enabling it remaps | |
103 | word-based editing commands to subword-based commands that handle | |
104 | symbols with mixed uppercase and lowercase letters, | |
105 | e.g. \"GtkWidget\", \"EmacsFrameClass\", \"NSGraphicsContext\". | |
106 | ||
107 | Here we call these mixed case symbols `nomenclatures'. Each | |
108 | capitalized (or completely uppercase) part of a nomenclature is | |
109 | called a `subword'. Here are some examples: | |
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110 | |
111 | Nomenclature Subwords | |
112 | =========================================================== | |
113 | GtkWindow => \"Gtk\" and \"Window\" | |
114 | EmacsFrameClass => \"Emacs\", \"Frame\" and \"Class\" | |
115 | NSGraphicsContext => \"NS\", \"Graphics\" and \"Context\" | |
116 | ||
117 | The subword oriented commands activated in this minor mode recognize | |
118 | subwords in a nomenclature to move between subwords and to edit them | |
119 | as words. | |
120 | ||
653d1554 | 121 | \\{subword-mode-map}" |
0386b551 AM |
122 | nil |
123 | nil | |
653d1554 TH |
124 | subword-mode-map) |
125 | ||
126 | (define-obsolete-function-alias 'c-subword-mode 'subword-mode "23.2") | |
0386b551 | 127 | |
653d1554 TH |
128 | ;;;###autoload |
129 | (define-global-minor-mode global-subword-mode subword-mode | |
130 | (lambda () (subword-mode 1))) | |
131 | ||
a9b76eec | 132 | (defun subword-forward (&optional arg) |
0386b551 | 133 | "Do the same as `forward-word' but on subwords. |
653d1554 | 134 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
135 | Optional argument ARG is the same as for `forward-word'." |
136 | (interactive "p") | |
137 | (unless arg (setq arg 1)) | |
0386b551 AM |
138 | (cond |
139 | ((< 0 arg) | |
140 | (dotimes (i arg (point)) | |
a9b76eec | 141 | (subword-forward-internal))) |
0386b551 AM |
142 | ((> 0 arg) |
143 | (dotimes (i (- arg) (point)) | |
a9b76eec | 144 | (subword-backward-internal))) |
0386b551 AM |
145 | (t |
146 | (point)))) | |
147 | ||
a9b76eec | 148 | (put 'subword-forward 'CUA 'move) |
5e8c9892 | 149 | |
a9b76eec | 150 | (defun subword-backward (&optional arg) |
0386b551 | 151 | "Do the same as `backward-word' but on subwords. |
653d1554 | 152 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
153 | Optional argument ARG is the same as for `backward-word'." |
154 | (interactive "p") | |
a9b76eec | 155 | (subword-forward (- (or arg 1)))) |
0386b551 | 156 | |
a9b76eec | 157 | (defun subword-mark (arg) |
0386b551 | 158 | "Do the same as `mark-word' but on subwords. |
653d1554 | 159 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
160 | Optional argument ARG is the same as for `mark-word'." |
161 | ;; This code is almost copied from `mark-word' in GNU Emacs. | |
162 | (interactive "p") | |
163 | (cond ((and (eq last-command this-command) (mark t)) | |
164 | (set-mark | |
165 | (save-excursion | |
166 | (goto-char (mark)) | |
a9b76eec | 167 | (subword-forward arg) |
0386b551 AM |
168 | (point)))) |
169 | (t | |
170 | (push-mark | |
171 | (save-excursion | |
a9b76eec | 172 | (subword-forward arg) |
0386b551 AM |
173 | (point)) |
174 | nil t)))) | |
175 | ||
a9b76eec | 176 | (put 'subword-backward 'CUA 'move) |
5e8c9892 | 177 | |
a9b76eec | 178 | (defun subword-kill (arg) |
0386b551 | 179 | "Do the same as `kill-word' but on subwords. |
653d1554 | 180 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
181 | Optional argument ARG is the same as for `kill-word'." |
182 | (interactive "p") | |
a9b76eec | 183 | (kill-region (point) (subword-forward arg))) |
0386b551 | 184 | |
a9b76eec | 185 | (defun subword-backward-kill (arg) |
0386b551 | 186 | "Do the same as `backward-kill-word' but on subwords. |
653d1554 | 187 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
188 | Optional argument ARG is the same as for `backward-kill-word'." |
189 | (interactive "p") | |
a9b76eec | 190 | (subword-kill (- arg))) |
0386b551 | 191 | |
a9b76eec | 192 | (defun subword-transpose (arg) |
0386b551 | 193 | "Do the same as `transpose-words' but on subwords. |
653d1554 | 194 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
195 | Optional argument ARG is the same as for `transpose-words'." |
196 | (interactive "*p") | |
a9b76eec | 197 | (transpose-subr 'subword-forward arg)) |
287787ee | 198 | |
a9b76eec | 199 | (defun subword-downcase (arg) |
287787ee | 200 | "Do the same as `downcase-word' but on subwords. |
653d1554 | 201 | See the command `subword-mode' for a description of subwords. |
287787ee MY |
202 | Optional argument ARG is the same as for `downcase-word'." |
203 | (interactive "p") | |
204 | (let ((start (point))) | |
a9b76eec | 205 | (downcase-region (point) (subword-forward arg)) |
653d1554 | 206 | (when (< arg 0) |
287787ee MY |
207 | (goto-char start)))) |
208 | ||
a9b76eec | 209 | (defun subword-upcase (arg) |
287787ee | 210 | "Do the same as `upcase-word' but on subwords. |
653d1554 | 211 | See the command `subword-mode' for a description of subwords. |
287787ee MY |
212 | Optional argument ARG is the same as for `upcase-word'." |
213 | (interactive "p") | |
214 | (let ((start (point))) | |
a9b76eec | 215 | (upcase-region (point) (subword-forward arg)) |
653d1554 | 216 | (when (< arg 0) |
287787ee MY |
217 | (goto-char start)))) |
218 | ||
a9b76eec | 219 | (defun subword-capitalize (arg) |
0386b551 | 220 | "Do the same as `capitalize-word' but on subwords. |
653d1554 | 221 | See the command `subword-mode' for a description of subwords. |
0386b551 AM |
222 | Optional argument ARG is the same as for `capitalize-word'." |
223 | (interactive "p") | |
224 | (let ((count (abs arg)) | |
11d13e96 MY |
225 | (start (point)) |
226 | (advance (if (< arg 0) nil t))) | |
0386b551 | 227 | (dotimes (i count) |
11d13e96 MY |
228 | (if advance |
229 | (progn (re-search-forward | |
653d1554 | 230 | (concat "[[:alpha:]]") |
11d13e96 MY |
231 | nil t) |
232 | (goto-char (match-beginning 0))) | |
a9b76eec | 233 | (subword-backward)) |
0386b551 AM |
234 | (let* ((p (point)) |
235 | (pp (1+ p)) | |
a9b76eec | 236 | (np (subword-forward))) |
0386b551 AM |
237 | (upcase-region p pp) |
238 | (downcase-region pp np) | |
11d13e96 MY |
239 | (goto-char (if advance np p)))) |
240 | (unless advance | |
241 | (goto-char start)))) | |
0386b551 | 242 | |
0386b551 AM |
243 | |
244 | \f | |
245 | ;; | |
246 | ;; Internal functions | |
247 | ;; | |
a9b76eec | 248 | (defun subword-forward-internal () |
0386b551 | 249 | (if (and |
5e8c9892 | 250 | (save-excursion |
0386b551 | 251 | (let ((case-fold-search nil)) |
5e8c9892 | 252 | (re-search-forward |
653d1554 | 253 | (concat "\\W*\\(\\([[:upper:]]*\\W?\\)[[:lower:][:digit:]]*\\)") |
0386b551 | 254 | nil t))) |
653d1554 | 255 | (> (match-end 0) (point))) |
5e8c9892 | 256 | (goto-char |
0386b551 AM |
257 | (cond |
258 | ((< 1 (- (match-end 2) (match-beginning 2))) | |
259 | (1- (match-end 2))) | |
260 | (t | |
261 | (match-end 0)))) | |
262 | (forward-word 1))) | |
263 | ||
264 | ||
a9b76eec | 265 | (defun subword-backward-internal () |
5e8c9892 KS |
266 | (if (save-excursion |
267 | (let ((case-fold-search nil)) | |
0386b551 AM |
268 | (re-search-backward |
269 | (concat | |
653d1554 | 270 | "\\(\\(\\W\\|[[:lower:][:digit:]]\\)\\([[:upper:]]+\\W*\\)" |
5e8c9892 | 271 | "\\|\\W\\w+\\)") |
0386b551 | 272 | nil t))) |
5e8c9892 KS |
273 | (goto-char |
274 | (cond | |
0386b551 AM |
275 | ((and (match-end 3) |
276 | (< 1 (- (match-end 3) (match-beginning 3))) | |
277 | (not (eq (point) (match-end 3)))) | |
278 | (1- (match-end 3))) | |
279 | (t | |
280 | (1+ (match-beginning 0))))) | |
281 | (backward-word 1))) | |
282 | ||
283 | \f | |
653d1554 | 284 | (provide 'subword) |
0386b551 | 285 | |
653d1554 | 286 | ;;; subword.el ends here |