Commit | Line | Data |
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dcfdbac7 | 1 | /* GNU Emacs case conversion functions. |
4a2f9c6a | 2 | Copyright (C) 1985, 1994, 1997 Free Software Foundation, Inc. |
dcfdbac7 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
dcfdbac7 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
dcfdbac7 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
dcfdbac7 JB |
23 | #include "lisp.h" |
24 | #include "buffer.h" | |
83be827a | 25 | #include "character.h" |
dcfdbac7 JB |
26 | #include "commands.h" |
27 | #include "syntax.h" | |
66da2880 | 28 | #include "composite.h" |
e35f6ff7 | 29 | #include "keymap.h" |
dcfdbac7 JB |
30 | |
31 | enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP}; | |
a04538da KH |
32 | |
33 | Lisp_Object Qidentity; | |
dcfdbac7 JB |
34 | \f |
35 | Lisp_Object | |
36 | casify_object (flag, obj) | |
37 | enum case_action flag; | |
38 | Lisp_Object obj; | |
39 | { | |
2422e50a | 40 | register int c, c1; |
dcfdbac7 JB |
41 | register int inword = flag == CASE_DOWN; |
42 | ||
bd47bd35 RS |
43 | /* If the case table is flagged as modified, rescan it. */ |
44 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
45 | Fset_case_table (current_buffer->downcase_table); | |
46 | ||
dcfdbac7 JB |
47 | while (1) |
48 | { | |
9d05e3d4 | 49 | if (INTEGERP (obj)) |
dcfdbac7 | 50 | { |
e3a10b5e KH |
51 | int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
52 | | CHAR_SHIFT | CHAR_CTL | CHAR_META); | |
53 | int flags = XINT (obj) & flagbits; | |
2422e50a | 54 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
e3a10b5e | 55 | |
2422e50a KH |
56 | c1 = XFASTINT (obj) & ~flagbits; |
57 | if (! multibyte) | |
8d359247 | 58 | MAKE_CHAR_MULTIBYTE (c1); |
2422e50a KH |
59 | c = DOWNCASE (c1); |
60 | if (inword || c == c1) | |
61 | { | |
62 | if (! inword) | |
63 | c = UPCASE1 (c1); | |
64 | if (! multibyte) | |
8d359247 | 65 | MAKE_CHAR_UNIBYTE (c); |
e3a10b5e | 66 | XSETFASTINT (obj, c | flags); |
5dd4d40a | 67 | } |
dcfdbac7 JB |
68 | return obj; |
69 | } | |
5245463a | 70 | |
9d05e3d4 | 71 | if (STRINGP (obj)) |
dcfdbac7 | 72 | { |
5245463a | 73 | int multibyte = STRING_MULTIBYTE (obj); |
2422e50a KH |
74 | int i, i_byte, len; |
75 | int size = XSTRING (obj)->size; | |
a0615d90 | 76 | |
dcfdbac7 | 77 | obj = Fcopy_sequence (obj); |
2422e50a | 78 | for (i = i_byte = 0; i < size; i++, i_byte += len) |
dcfdbac7 | 79 | { |
2422e50a KH |
80 | if (multibyte) |
81 | c = STRING_CHAR_AND_LENGTH (XSTRING (obj)->data + i_byte, | |
82 | 0, len); | |
83 | else | |
84 | { | |
85 | c = XSTRING (obj)->data[i_byte]; | |
86 | len = 1; | |
87 | MAKE_CHAR_MULTIBYTE (c); | |
88 | } | |
89 | c1 = c; | |
96927ba4 | 90 | if (inword && flag != CASE_CAPITALIZE_UP) |
dcfdbac7 | 91 | c = DOWNCASE (c); |
96927ba4 RS |
92 | else if (!UPPERCASEP (c) |
93 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
2422e50a | 94 | c = UPCASE1 (c1); |
96927ba4 | 95 | if ((int) flag >= (int) CASE_CAPITALIZE) |
dcfdbac7 | 96 | inword = SYNTAX (c) == Sword; |
2422e50a | 97 | if (c != c1) |
a0615d90 | 98 | { |
2422e50a KH |
99 | if (! multibyte) |
100 | { | |
101 | MAKE_CHAR_UNIBYTE (c); | |
102 | XSTRING (obj)->data[i_byte] = c; | |
103 | } | |
104 | else if (ASCII_CHAR_P (c1) && ASCII_CHAR_P (c)) | |
105 | XSTRING (obj)->data[i_byte] = c; | |
106 | else | |
107 | { | |
108 | Faset (obj, make_number (i), make_number (c)); | |
109 | i_byte += CHAR_BYTES (c) - len; | |
110 | } | |
a0615d90 | 111 | } |
a0615d90 | 112 | } |
dcfdbac7 JB |
113 | return obj; |
114 | } | |
b37902c8 | 115 | obj = wrong_type_argument (Qchar_or_string_p, obj); |
dcfdbac7 JB |
116 | } |
117 | } | |
118 | ||
119 | DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0, | |
fdb82f93 PJ |
120 | doc: /* Convert argument to upper case and return that. |
121 | The argument may be a character or string. The result has the same type. | |
122 | The argument object is not altered--the value is a copy. | |
123 | See also `capitalize', `downcase' and `upcase-initials'. */) | |
124 | (obj) | |
dcfdbac7 JB |
125 | Lisp_Object obj; |
126 | { | |
127 | return casify_object (CASE_UP, obj); | |
128 | } | |
129 | ||
130 | DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0, | |
fdb82f93 PJ |
131 | doc: /* Convert argument to lower case and return that. |
132 | The argument may be a character or string. The result has the same type. | |
133 | The argument object is not altered--the value is a copy. */) | |
134 | (obj) | |
dcfdbac7 JB |
135 | Lisp_Object obj; |
136 | { | |
137 | return casify_object (CASE_DOWN, obj); | |
138 | } | |
139 | ||
140 | DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0, | |
fdb82f93 PJ |
141 | doc: /* Convert argument to capitalized form and return that. |
142 | This means that each word's first character is upper case | |
143 | and the rest is lower case. | |
144 | The argument may be a character or string. The result has the same type. | |
145 | The argument object is not altered--the value is a copy. */) | |
146 | (obj) | |
dcfdbac7 JB |
147 | Lisp_Object obj; |
148 | { | |
149 | return casify_object (CASE_CAPITALIZE, obj); | |
150 | } | |
96927ba4 | 151 | |
2371fad4 KH |
152 | /* Like Fcapitalize but change only the initials. */ |
153 | ||
8cef1f78 | 154 | DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0, |
fdb82f93 PJ |
155 | doc: /* Convert the initial of each word in the argument to upper case. |
156 | Do not change the other letters of each word. | |
157 | The argument may be a character or string. The result has the same type. | |
158 | The argument object is not altered--the value is a copy. */) | |
159 | (obj) | |
8cef1f78 RS |
160 | Lisp_Object obj; |
161 | { | |
162 | return casify_object (CASE_CAPITALIZE_UP, obj); | |
163 | } | |
dcfdbac7 JB |
164 | \f |
165 | /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
166 | b and e specify range of buffer to operate on. */ | |
167 | ||
dfcf069d | 168 | void |
dcfdbac7 JB |
169 | casify_region (flag, b, e) |
170 | enum case_action flag; | |
171 | Lisp_Object b, e; | |
172 | { | |
173 | register int i; | |
174 | register int c; | |
175 | register int inword = flag == CASE_DOWN; | |
a0615d90 | 176 | register int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
2371fad4 | 177 | int start, end; |
4c7b7eab | 178 | int start_byte, end_byte; |
66da2880 | 179 | int changed = 0; |
2422e50a KH |
180 | int opoint = PT; |
181 | int opoint_byte = PT_BYTE; | |
dcfdbac7 JB |
182 | |
183 | if (EQ (b, e)) | |
184 | /* Not modifying because nothing marked */ | |
185 | return; | |
186 | ||
bd47bd35 RS |
187 | /* If the case table is flagged as modified, rescan it. */ |
188 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
189 | Fset_case_table (current_buffer->downcase_table); | |
190 | ||
dcfdbac7 | 191 | validate_region (&b, &e); |
2371fad4 KH |
192 | start = XFASTINT (b); |
193 | end = XFASTINT (e); | |
194 | modify_region (current_buffer, start, end); | |
195 | record_change (start, end - start); | |
4c7b7eab RS |
196 | start_byte = CHAR_TO_BYTE (start); |
197 | end_byte = CHAR_TO_BYTE (end); | |
dcfdbac7 | 198 | |
2422e50a | 199 | while (start < end) |
a04538da | 200 | { |
2422e50a KH |
201 | int c2, len; |
202 | ||
203 | if (multibyte) | |
204 | { | |
205 | c = FETCH_MULTIBYTE_CHAR (start_byte); | |
206 | len = CHAR_BYTES (c); | |
207 | } | |
208 | else | |
209 | { | |
210 | c = FETCH_BYTE (start_byte); | |
211 | MAKE_CHAR_MULTIBYTE (c); | |
212 | len = 1; | |
213 | } | |
214 | c2 = c; | |
a0615d90 KH |
215 | if (inword && flag != CASE_CAPITALIZE_UP) |
216 | c = DOWNCASE (c); | |
217 | else if (!UPPERCASEP (c) | |
218 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
219 | c = UPCASE1 (c); | |
a0615d90 KH |
220 | if ((int) flag >= (int) CASE_CAPITALIZE) |
221 | inword = SYNTAX (c) == Sword; | |
2422e50a | 222 | if (c != c2) |
a04538da | 223 | { |
2422e50a KH |
224 | changed = 1; |
225 | if (! multibyte) | |
226 | { | |
227 | MAKE_CHAR_UNIBYTE (c); | |
228 | FETCH_BYTE (start_byte) = c; | |
229 | } | |
230 | else if (ASCII_CHAR_P (c2) && ASCII_CHAR_P (c)) | |
231 | FETCH_BYTE (start_byte) = c; | |
232 | else if (len == CHAR_BYTES (c)) | |
a04538da | 233 | { |
2422e50a | 234 | int j; |
66da2880 | 235 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
a04538da | 236 | |
2422e50a KH |
237 | CHAR_STRING (c, str); |
238 | for (j = 0; j < len; ++j) | |
239 | FETCH_BYTE (start_byte + j) = str[j]; | |
240 | } | |
241 | else | |
242 | { | |
243 | TEMP_SET_PT_BOTH (start, start_byte); | |
244 | del_range_2 (start, start_byte, start + 1, start_byte + len, 0); | |
245 | insert_char (c); | |
246 | len = CHAR_BYTES (c); | |
a04538da | 247 | } |
a04538da | 248 | } |
2422e50a KH |
249 | start++; |
250 | start_byte += len; | |
dcfdbac7 JB |
251 | } |
252 | ||
66da2880 KH |
253 | if (changed) |
254 | { | |
2422e50a | 255 | start = XFASTINT (b); |
66da2880 KH |
256 | signal_after_change (start, end - start, end - start); |
257 | update_compositions (start, end, CHECK_ALL); | |
258 | } | |
dcfdbac7 JB |
259 | } |
260 | ||
261 | DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r", | |
fdb82f93 PJ |
262 | doc: /* Convert the region to upper case. In programs, wants two arguments. |
263 | These arguments specify the starting and ending character numbers of | |
264 | the region to operate on. When used as a command, the text between | |
265 | point and the mark is operated on. | |
266 | See also `capitalize-region'. */) | |
267 | (beg, end) | |
8c22d56c | 268 | Lisp_Object beg, end; |
dcfdbac7 | 269 | { |
8c22d56c | 270 | casify_region (CASE_UP, beg, end); |
dcfdbac7 JB |
271 | return Qnil; |
272 | } | |
273 | ||
274 | DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r", | |
fdb82f93 PJ |
275 | doc: /* Convert the region to lower case. In programs, wants two arguments. |
276 | These arguments specify the starting and ending character numbers of | |
277 | the region to operate on. When used as a command, the text between | |
278 | point and the mark is operated on. */) | |
279 | (beg, end) | |
8c22d56c | 280 | Lisp_Object beg, end; |
dcfdbac7 | 281 | { |
8c22d56c | 282 | casify_region (CASE_DOWN, beg, end); |
dcfdbac7 JB |
283 | return Qnil; |
284 | } | |
285 | ||
286 | DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r", | |
fdb82f93 PJ |
287 | doc: /* Convert the region to capitalized form. |
288 | Capitalized form means each word's first character is upper case | |
289 | and the rest of it is lower case. | |
290 | In programs, give two arguments, the starting and ending | |
291 | character positions to operate on. */) | |
292 | (beg, end) | |
8c22d56c | 293 | Lisp_Object beg, end; |
dcfdbac7 | 294 | { |
8c22d56c | 295 | casify_region (CASE_CAPITALIZE, beg, end); |
dcfdbac7 JB |
296 | return Qnil; |
297 | } | |
298 | ||
2371fad4 KH |
299 | /* Like Fcapitalize_region but change only the initials. */ |
300 | ||
8cef1f78 RS |
301 | DEFUN ("upcase-initials-region", Fupcase_initials_region, |
302 | Supcase_initials_region, 2, 2, "r", | |
fdb82f93 PJ |
303 | doc: /* Upcase the initial of each word in the region. |
304 | Subsequent letters of each word are not changed. | |
305 | In programs, give two arguments, the starting and ending | |
306 | character positions to operate on. */) | |
307 | (beg, end) | |
8c22d56c | 308 | Lisp_Object beg, end; |
8cef1f78 | 309 | { |
8c22d56c | 310 | casify_region (CASE_CAPITALIZE_UP, beg, end); |
8cef1f78 RS |
311 | return Qnil; |
312 | } | |
dcfdbac7 JB |
313 | \f |
314 | Lisp_Object | |
34628a90 | 315 | operate_on_word (arg, newpoint) |
dcfdbac7 | 316 | Lisp_Object arg; |
34628a90 | 317 | int *newpoint; |
dcfdbac7 | 318 | { |
39fb55ff | 319 | Lisp_Object val; |
34628a90 | 320 | int farend; |
2371fad4 | 321 | int iarg; |
dcfdbac7 | 322 | |
b7826503 | 323 | CHECK_NUMBER (arg); |
2371fad4 | 324 | iarg = XINT (arg); |
6ec8bbd2 | 325 | farend = scan_words (PT, iarg); |
dcfdbac7 | 326 | if (!farend) |
2371fad4 | 327 | farend = iarg > 0 ? ZV : BEGV; |
dcfdbac7 | 328 | |
6ec8bbd2 | 329 | *newpoint = PT > farend ? PT : farend; |
18e23fd0 | 330 | XSETFASTINT (val, farend); |
dcfdbac7 JB |
331 | |
332 | return val; | |
333 | } | |
334 | ||
335 | DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p", | |
fdb82f93 PJ |
336 | doc: /* Convert following word (or ARG words) to upper case, moving over. |
337 | With negative argument, convert previous words but do not move. | |
338 | See also `capitalize-word'. */) | |
339 | (arg) | |
dcfdbac7 JB |
340 | Lisp_Object arg; |
341 | { | |
34628a90 RS |
342 | Lisp_Object beg, end; |
343 | int newpoint; | |
6ec8bbd2 | 344 | XSETFASTINT (beg, PT); |
34628a90 RS |
345 | end = operate_on_word (arg, &newpoint); |
346 | casify_region (CASE_UP, beg, end); | |
347 | SET_PT (newpoint); | |
dcfdbac7 JB |
348 | return Qnil; |
349 | } | |
350 | ||
351 | DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p", | |
fdb82f93 PJ |
352 | doc: /* Convert following word (or ARG words) to lower case, moving over. |
353 | With negative argument, convert previous words but do not move. */) | |
354 | (arg) | |
dcfdbac7 JB |
355 | Lisp_Object arg; |
356 | { | |
34628a90 RS |
357 | Lisp_Object beg, end; |
358 | int newpoint; | |
6ec8bbd2 | 359 | XSETFASTINT (beg, PT); |
34628a90 RS |
360 | end = operate_on_word (arg, &newpoint); |
361 | casify_region (CASE_DOWN, beg, end); | |
362 | SET_PT (newpoint); | |
dcfdbac7 JB |
363 | return Qnil; |
364 | } | |
365 | ||
366 | DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p", | |
fdb82f93 PJ |
367 | doc: /* Capitalize the following word (or ARG words), moving over. |
368 | This gives the word(s) a first character in upper case | |
369 | and the rest lower case. | |
370 | With negative argument, capitalize previous words but do not move. */) | |
371 | (arg) | |
dcfdbac7 JB |
372 | Lisp_Object arg; |
373 | { | |
34628a90 RS |
374 | Lisp_Object beg, end; |
375 | int newpoint; | |
6ec8bbd2 | 376 | XSETFASTINT (beg, PT); |
34628a90 RS |
377 | end = operate_on_word (arg, &newpoint); |
378 | casify_region (CASE_CAPITALIZE, beg, end); | |
379 | SET_PT (newpoint); | |
dcfdbac7 JB |
380 | return Qnil; |
381 | } | |
382 | \f | |
dfcf069d | 383 | void |
dcfdbac7 JB |
384 | syms_of_casefiddle () |
385 | { | |
a04538da KH |
386 | Qidentity = intern ("identity"); |
387 | staticpro (&Qidentity); | |
dcfdbac7 JB |
388 | defsubr (&Supcase); |
389 | defsubr (&Sdowncase); | |
390 | defsubr (&Scapitalize); | |
8cef1f78 | 391 | defsubr (&Supcase_initials); |
dcfdbac7 JB |
392 | defsubr (&Supcase_region); |
393 | defsubr (&Sdowncase_region); | |
394 | defsubr (&Scapitalize_region); | |
8cef1f78 | 395 | defsubr (&Supcase_initials_region); |
dcfdbac7 JB |
396 | defsubr (&Supcase_word); |
397 | defsubr (&Sdowncase_word); | |
398 | defsubr (&Scapitalize_word); | |
399 | } | |
400 | ||
dfcf069d | 401 | void |
dcfdbac7 JB |
402 | keys_of_casefiddle () |
403 | { | |
404 | initial_define_key (control_x_map, Ctl('U'), "upcase-region"); | |
d427b66a | 405 | Fput (intern ("upcase-region"), Qdisabled, Qt); |
dcfdbac7 | 406 | initial_define_key (control_x_map, Ctl('L'), "downcase-region"); |
d427b66a JB |
407 | Fput (intern ("downcase-region"), Qdisabled, Qt); |
408 | ||
dcfdbac7 JB |
409 | initial_define_key (meta_map, 'u', "upcase-word"); |
410 | initial_define_key (meta_map, 'l', "downcase-word"); | |
411 | initial_define_key (meta_map, 'c', "capitalize-word"); | |
412 | } |