Commit | Line | Data |
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dcfdbac7 | 1 | /* GNU Emacs case conversion functions. |
0b5538bd | 2 | Copyright (C) 1985, 1994, 1997, 1998, 1999, 2001, 2002, 2003, 2004, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
dcfdbac7 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
dcfdbac7 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
dcfdbac7 JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
dcfdbac7 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
83be827a | 26 | #include "character.h" |
dcfdbac7 JB |
27 | #include "commands.h" |
28 | #include "syntax.h" | |
66da2880 | 29 | #include "composite.h" |
e35f6ff7 | 30 | #include "keymap.h" |
dcfdbac7 JB |
31 | |
32 | enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP}; | |
a04538da KH |
33 | |
34 | Lisp_Object Qidentity; | |
dcfdbac7 JB |
35 | \f |
36 | Lisp_Object | |
37 | casify_object (flag, obj) | |
38 | enum case_action flag; | |
39 | Lisp_Object obj; | |
40 | { | |
2422e50a | 41 | register int c, c1; |
dcfdbac7 JB |
42 | register int inword = flag == CASE_DOWN; |
43 | ||
bd47bd35 RS |
44 | /* If the case table is flagged as modified, rescan it. */ |
45 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
46 | Fset_case_table (current_buffer->downcase_table); | |
47 | ||
0d64f689 | 48 | if (INTEGERP (obj)) |
dcfdbac7 | 49 | { |
0d64f689 KH |
50 | int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
51 | | CHAR_SHIFT | CHAR_CTL | CHAR_META); | |
52 | int flags = XINT (obj) & flagbits; | |
53 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); | |
54 | ||
55 | /* If the character has higher bits set | |
56 | above the flags, return it unchanged. | |
57 | It is not a real character. */ | |
58 | if ((unsigned) XFASTINT (obj) > (unsigned) flagbits) | |
59 | return obj; | |
60 | ||
61 | c1 = XFASTINT (obj) & ~flagbits; | |
62 | if (! multibyte) | |
63 | MAKE_CHAR_MULTIBYTE (c1); | |
64 | c = DOWNCASE (c1); | |
65 | if (inword) | |
66 | XSETFASTINT (obj, c | flags); | |
67 | else if (c == (XFASTINT (obj) & ~flagbits)) | |
dcfdbac7 | 68 | { |
0d64f689 KH |
69 | if (! inword) |
70 | c = UPCASE1 (c1); | |
2422e50a | 71 | if (! multibyte) |
0d64f689 KH |
72 | MAKE_CHAR_UNIBYTE (c); |
73 | XSETFASTINT (obj, c | flags); | |
dcfdbac7 | 74 | } |
0d64f689 KH |
75 | return obj; |
76 | } | |
5245463a | 77 | |
0d64f689 KH |
78 | if (STRINGP (obj)) |
79 | { | |
80 | int multibyte = STRING_MULTIBYTE (obj); | |
81 | int i, i_byte, len; | |
82 | int size = SCHARS (obj); | |
a0615d90 | 83 | |
0d64f689 KH |
84 | obj = Fcopy_sequence (obj); |
85 | for (i = i_byte = 0; i < size; i++, i_byte += len) | |
86 | { | |
87 | if (multibyte) | |
88 | c = STRING_CHAR_AND_LENGTH (SDATA (obj) + i_byte, 0, len); | |
89 | else | |
dcfdbac7 | 90 | { |
0d64f689 KH |
91 | c = SREF (obj, i_byte); |
92 | len = 1; | |
93 | MAKE_CHAR_MULTIBYTE (c); | |
94 | } | |
95 | c1 = c; | |
96 | if (inword && flag != CASE_CAPITALIZE_UP) | |
97 | c = DOWNCASE (c); | |
98 | else if (!UPPERCASEP (c) | |
99 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
100 | c = UPCASE1 (c1); | |
101 | if ((int) flag >= (int) CASE_CAPITALIZE) | |
102 | inword = (SYNTAX (c) == Sword); | |
103 | if (c != c1) | |
104 | { | |
105 | if (! multibyte) | |
2422e50a | 106 | { |
0d64f689 KH |
107 | MAKE_CHAR_UNIBYTE (c); |
108 | SSET (obj, i_byte, c); | |
2422e50a | 109 | } |
0d64f689 KH |
110 | else if (ASCII_CHAR_P (c1) && ASCII_CHAR_P (c)) |
111 | SSET (obj, i_byte, c); | |
112 | else | |
a0615d90 | 113 | { |
0d64f689 KH |
114 | Faset (obj, make_number (i), make_number (c)); |
115 | i_byte += CHAR_BYTES (c) - len; | |
a0615d90 | 116 | } |
a0615d90 | 117 | } |
dcfdbac7 | 118 | } |
0d64f689 | 119 | return obj; |
dcfdbac7 | 120 | } |
0d64f689 KH |
121 | |
122 | wrong_type_argument (Qchar_or_string_p, obj); | |
dcfdbac7 JB |
123 | } |
124 | ||
125 | DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0, | |
fdb82f93 PJ |
126 | doc: /* Convert argument to upper case and return that. |
127 | The argument may be a character or string. The result has the same type. | |
128 | The argument object is not altered--the value is a copy. | |
129 | See also `capitalize', `downcase' and `upcase-initials'. */) | |
130 | (obj) | |
dcfdbac7 JB |
131 | Lisp_Object obj; |
132 | { | |
133 | return casify_object (CASE_UP, obj); | |
134 | } | |
135 | ||
136 | DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0, | |
fdb82f93 PJ |
137 | doc: /* Convert argument to lower case and return that. |
138 | The argument may be a character or string. The result has the same type. | |
139 | The argument object is not altered--the value is a copy. */) | |
140 | (obj) | |
dcfdbac7 JB |
141 | Lisp_Object obj; |
142 | { | |
143 | return casify_object (CASE_DOWN, obj); | |
144 | } | |
145 | ||
146 | DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0, | |
fdb82f93 PJ |
147 | doc: /* Convert argument to capitalized form and return that. |
148 | This means that each word's first character is upper case | |
149 | and the rest is lower case. | |
150 | The argument may be a character or string. The result has the same type. | |
151 | The argument object is not altered--the value is a copy. */) | |
152 | (obj) | |
dcfdbac7 JB |
153 | Lisp_Object obj; |
154 | { | |
155 | return casify_object (CASE_CAPITALIZE, obj); | |
156 | } | |
96927ba4 | 157 | |
2371fad4 KH |
158 | /* Like Fcapitalize but change only the initials. */ |
159 | ||
8cef1f78 | 160 | DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0, |
fdb82f93 PJ |
161 | doc: /* Convert the initial of each word in the argument to upper case. |
162 | Do not change the other letters of each word. | |
163 | The argument may be a character or string. The result has the same type. | |
164 | The argument object is not altered--the value is a copy. */) | |
165 | (obj) | |
8cef1f78 RS |
166 | Lisp_Object obj; |
167 | { | |
168 | return casify_object (CASE_CAPITALIZE_UP, obj); | |
169 | } | |
dcfdbac7 JB |
170 | \f |
171 | /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
172 | b and e specify range of buffer to operate on. */ | |
173 | ||
dfcf069d | 174 | void |
dcfdbac7 JB |
175 | casify_region (flag, b, e) |
176 | enum case_action flag; | |
177 | Lisp_Object b, e; | |
178 | { | |
dcfdbac7 JB |
179 | register int c; |
180 | register int inword = flag == CASE_DOWN; | |
a0615d90 | 181 | register int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
7927d8e3 SM |
182 | EMACS_INT start, end; |
183 | EMACS_INT start_byte, end_byte; | |
184 | EMACS_INT first = -1, last; /* Position of first and last changes. */ | |
185 | EMACS_INT opoint = PT; | |
186 | EMACS_INT opoint_byte = PT_BYTE; | |
dcfdbac7 JB |
187 | |
188 | if (EQ (b, e)) | |
189 | /* Not modifying because nothing marked */ | |
190 | return; | |
191 | ||
bd47bd35 RS |
192 | /* If the case table is flagged as modified, rescan it. */ |
193 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
194 | Fset_case_table (current_buffer->downcase_table); | |
195 | ||
dcfdbac7 | 196 | validate_region (&b, &e); |
2371fad4 KH |
197 | start = XFASTINT (b); |
198 | end = XFASTINT (e); | |
3e145152 | 199 | modify_region (current_buffer, start, end, 0); |
2371fad4 | 200 | record_change (start, end - start); |
4c7b7eab RS |
201 | start_byte = CHAR_TO_BYTE (start); |
202 | end_byte = CHAR_TO_BYTE (end); | |
dcfdbac7 | 203 | |
2422e50a | 204 | while (start < end) |
a04538da | 205 | { |
2422e50a KH |
206 | int c2, len; |
207 | ||
208 | if (multibyte) | |
209 | { | |
210 | c = FETCH_MULTIBYTE_CHAR (start_byte); | |
211 | len = CHAR_BYTES (c); | |
212 | } | |
213 | else | |
214 | { | |
215 | c = FETCH_BYTE (start_byte); | |
216 | MAKE_CHAR_MULTIBYTE (c); | |
217 | len = 1; | |
218 | } | |
219 | c2 = c; | |
a0615d90 KH |
220 | if (inword && flag != CASE_CAPITALIZE_UP) |
221 | c = DOWNCASE (c); | |
222 | else if (!UPPERCASEP (c) | |
223 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
224 | c = UPCASE1 (c); | |
a0615d90 | 225 | if ((int) flag >= (int) CASE_CAPITALIZE) |
8f924df7 | 226 | inword = ((SYNTAX (c) == Sword) && (inword || !SYNTAX_PREFIX (c))); |
2422e50a | 227 | if (c != c2) |
a04538da | 228 | { |
7927d8e3 SM |
229 | last = start; |
230 | if (first < 0) | |
231 | first = start; | |
232 | ||
2422e50a KH |
233 | if (! multibyte) |
234 | { | |
235 | MAKE_CHAR_UNIBYTE (c); | |
236 | FETCH_BYTE (start_byte) = c; | |
237 | } | |
238 | else if (ASCII_CHAR_P (c2) && ASCII_CHAR_P (c)) | |
239 | FETCH_BYTE (start_byte) = c; | |
08588bfa | 240 | else |
a04538da | 241 | { |
08588bfa | 242 | int tolen = CHAR_BYTES (c); |
2422e50a | 243 | int j; |
66da2880 | 244 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
a04538da | 245 | |
2422e50a | 246 | CHAR_STRING (c, str); |
08588bfa KH |
247 | if (len == tolen) |
248 | { | |
249 | /* Length is unchanged. */ | |
250 | for (j = 0; j < len; ++j) | |
251 | FETCH_BYTE (start_byte + j) = str[j]; | |
252 | } | |
253 | else | |
254 | { | |
255 | /* Replace one character with the other, | |
256 | keeping text properties the same. */ | |
257 | replace_range_2 (start, start_byte, | |
258 | start + 1, start_byte + len, | |
259 | str, 1, tolen, | |
260 | 0); | |
261 | len = tolen; | |
262 | } | |
a04538da | 263 | } |
a04538da | 264 | } |
2422e50a KH |
265 | start++; |
266 | start_byte += len; | |
dcfdbac7 JB |
267 | } |
268 | ||
8f924df7 KH |
269 | if (PT != opoint) |
270 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
271 | ||
7927d8e3 | 272 | if (first >= 0) |
66da2880 | 273 | { |
7927d8e3 SM |
274 | signal_after_change (first, last + 1 - first, last + 1 - first); |
275 | update_compositions (first, last + 1, CHECK_ALL); | |
66da2880 | 276 | } |
dcfdbac7 JB |
277 | } |
278 | ||
279 | DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r", | |
fdb82f93 PJ |
280 | doc: /* Convert the region to upper case. In programs, wants two arguments. |
281 | These arguments specify the starting and ending character numbers of | |
282 | the region to operate on. When used as a command, the text between | |
283 | point and the mark is operated on. | |
284 | See also `capitalize-region'. */) | |
285 | (beg, end) | |
8c22d56c | 286 | Lisp_Object beg, end; |
dcfdbac7 | 287 | { |
8c22d56c | 288 | casify_region (CASE_UP, beg, end); |
dcfdbac7 JB |
289 | return Qnil; |
290 | } | |
291 | ||
292 | DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r", | |
fdb82f93 PJ |
293 | doc: /* Convert the region to lower case. In programs, wants two arguments. |
294 | These arguments specify the starting and ending character numbers of | |
295 | the region to operate on. When used as a command, the text between | |
296 | point and the mark is operated on. */) | |
297 | (beg, end) | |
8c22d56c | 298 | Lisp_Object beg, end; |
dcfdbac7 | 299 | { |
8c22d56c | 300 | casify_region (CASE_DOWN, beg, end); |
dcfdbac7 JB |
301 | return Qnil; |
302 | } | |
303 | ||
304 | DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r", | |
fdb82f93 PJ |
305 | doc: /* Convert the region to capitalized form. |
306 | Capitalized form means each word's first character is upper case | |
307 | and the rest of it is lower case. | |
308 | In programs, give two arguments, the starting and ending | |
309 | character positions to operate on. */) | |
310 | (beg, end) | |
8c22d56c | 311 | Lisp_Object beg, end; |
dcfdbac7 | 312 | { |
8c22d56c | 313 | casify_region (CASE_CAPITALIZE, beg, end); |
dcfdbac7 JB |
314 | return Qnil; |
315 | } | |
316 | ||
2371fad4 KH |
317 | /* Like Fcapitalize_region but change only the initials. */ |
318 | ||
8cef1f78 RS |
319 | DEFUN ("upcase-initials-region", Fupcase_initials_region, |
320 | Supcase_initials_region, 2, 2, "r", | |
fdb82f93 PJ |
321 | doc: /* Upcase the initial of each word in the region. |
322 | Subsequent letters of each word are not changed. | |
323 | In programs, give two arguments, the starting and ending | |
324 | character positions to operate on. */) | |
325 | (beg, end) | |
8c22d56c | 326 | Lisp_Object beg, end; |
8cef1f78 | 327 | { |
8c22d56c | 328 | casify_region (CASE_CAPITALIZE_UP, beg, end); |
8cef1f78 RS |
329 | return Qnil; |
330 | } | |
dcfdbac7 JB |
331 | \f |
332 | Lisp_Object | |
34628a90 | 333 | operate_on_word (arg, newpoint) |
dcfdbac7 | 334 | Lisp_Object arg; |
34628a90 | 335 | int *newpoint; |
dcfdbac7 | 336 | { |
39fb55ff | 337 | Lisp_Object val; |
34628a90 | 338 | int farend; |
2371fad4 | 339 | int iarg; |
dcfdbac7 | 340 | |
b7826503 | 341 | CHECK_NUMBER (arg); |
2371fad4 | 342 | iarg = XINT (arg); |
6ec8bbd2 | 343 | farend = scan_words (PT, iarg); |
dcfdbac7 | 344 | if (!farend) |
2371fad4 | 345 | farend = iarg > 0 ? ZV : BEGV; |
dcfdbac7 | 346 | |
6ec8bbd2 | 347 | *newpoint = PT > farend ? PT : farend; |
18e23fd0 | 348 | XSETFASTINT (val, farend); |
dcfdbac7 JB |
349 | |
350 | return val; | |
351 | } | |
352 | ||
353 | DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p", | |
fdb82f93 PJ |
354 | doc: /* Convert following word (or ARG words) to upper case, moving over. |
355 | With negative argument, convert previous words but do not move. | |
356 | See also `capitalize-word'. */) | |
357 | (arg) | |
dcfdbac7 JB |
358 | Lisp_Object arg; |
359 | { | |
34628a90 RS |
360 | Lisp_Object beg, end; |
361 | int newpoint; | |
6ec8bbd2 | 362 | XSETFASTINT (beg, PT); |
34628a90 RS |
363 | end = operate_on_word (arg, &newpoint); |
364 | casify_region (CASE_UP, beg, end); | |
365 | SET_PT (newpoint); | |
dcfdbac7 JB |
366 | return Qnil; |
367 | } | |
368 | ||
369 | DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p", | |
fdb82f93 PJ |
370 | doc: /* Convert following word (or ARG words) to lower case, moving over. |
371 | With negative argument, convert previous words but do not move. */) | |
372 | (arg) | |
dcfdbac7 JB |
373 | Lisp_Object arg; |
374 | { | |
34628a90 RS |
375 | Lisp_Object beg, end; |
376 | int newpoint; | |
6ec8bbd2 | 377 | XSETFASTINT (beg, PT); |
34628a90 RS |
378 | end = operate_on_word (arg, &newpoint); |
379 | casify_region (CASE_DOWN, beg, end); | |
380 | SET_PT (newpoint); | |
dcfdbac7 JB |
381 | return Qnil; |
382 | } | |
383 | ||
384 | DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p", | |
fdb82f93 PJ |
385 | doc: /* Capitalize the following word (or ARG words), moving over. |
386 | This gives the word(s) a first character in upper case | |
387 | and the rest lower case. | |
388 | With negative argument, capitalize previous words but do not move. */) | |
389 | (arg) | |
dcfdbac7 JB |
390 | Lisp_Object arg; |
391 | { | |
34628a90 RS |
392 | Lisp_Object beg, end; |
393 | int newpoint; | |
6ec8bbd2 | 394 | XSETFASTINT (beg, PT); |
34628a90 RS |
395 | end = operate_on_word (arg, &newpoint); |
396 | casify_region (CASE_CAPITALIZE, beg, end); | |
397 | SET_PT (newpoint); | |
dcfdbac7 JB |
398 | return Qnil; |
399 | } | |
400 | \f | |
dfcf069d | 401 | void |
dcfdbac7 JB |
402 | syms_of_casefiddle () |
403 | { | |
a04538da KH |
404 | Qidentity = intern ("identity"); |
405 | staticpro (&Qidentity); | |
dcfdbac7 JB |
406 | defsubr (&Supcase); |
407 | defsubr (&Sdowncase); | |
408 | defsubr (&Scapitalize); | |
8cef1f78 | 409 | defsubr (&Supcase_initials); |
dcfdbac7 JB |
410 | defsubr (&Supcase_region); |
411 | defsubr (&Sdowncase_region); | |
412 | defsubr (&Scapitalize_region); | |
8cef1f78 | 413 | defsubr (&Supcase_initials_region); |
dcfdbac7 JB |
414 | defsubr (&Supcase_word); |
415 | defsubr (&Sdowncase_word); | |
416 | defsubr (&Scapitalize_word); | |
417 | } | |
418 | ||
dfcf069d | 419 | void |
dcfdbac7 JB |
420 | keys_of_casefiddle () |
421 | { | |
422 | initial_define_key (control_x_map, Ctl('U'), "upcase-region"); | |
d427b66a | 423 | Fput (intern ("upcase-region"), Qdisabled, Qt); |
dcfdbac7 | 424 | initial_define_key (control_x_map, Ctl('L'), "downcase-region"); |
d427b66a JB |
425 | Fput (intern ("downcase-region"), Qdisabled, Qt); |
426 | ||
dcfdbac7 JB |
427 | initial_define_key (meta_map, 'u', "upcase-word"); |
428 | initial_define_key (meta_map, 'l', "downcase-word"); | |
429 | initial_define_key (meta_map, 'c', "capitalize-word"); | |
430 | } | |
6b61353c KH |
431 | |
432 | /* arch-tag: 60a73c66-5489-47e7-a81f-cead4057c526 | |
433 | (do not change this comment) */ |