Commit | Line | Data |
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dcfdbac7 | 1 | /* GNU Emacs case conversion functions. |
a0ecb2ac KS |
2 | Copyright (C) 1985,94,97,98,99, 2001, 2002, 2004 |
3 | 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 | |
7c938215 | 9 | the Free Software Foundation; either version 2, 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 | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
dcfdbac7 JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
dcfdbac7 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
a04538da | 26 | #include "charset.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 | { | |
41 | register int i, c, len; | |
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 | ||
dcfdbac7 JB |
48 | while (1) |
49 | { | |
9d05e3d4 | 50 | if (INTEGERP (obj)) |
dcfdbac7 | 51 | { |
e3a10b5e KH |
52 | int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
53 | | CHAR_SHIFT | CHAR_CTL | CHAR_META); | |
54 | int flags = XINT (obj) & flagbits; | |
55 | ||
69fe4180 RS |
56 | /* If the character has higher bits set |
57 | above the flags, return it unchanged. | |
58 | It is not a real character. */ | |
59 | if ((unsigned) XFASTINT (obj) > (unsigned) flagbits) | |
60 | return obj; | |
61 | ||
e3a10b5e | 62 | c = DOWNCASE (XFASTINT (obj) & ~flagbits); |
5dd4d40a | 63 | if (inword) |
e3a10b5e KH |
64 | XSETFASTINT (obj, c | flags); |
65 | else if (c == (XFASTINT (obj) & ~flagbits)) | |
5dd4d40a | 66 | { |
e3a10b5e KH |
67 | c = UPCASE1 ((XFASTINT (obj) & ~flagbits)); |
68 | XSETFASTINT (obj, c | flags); | |
5dd4d40a | 69 | } |
dcfdbac7 JB |
70 | return obj; |
71 | } | |
5245463a | 72 | |
9d05e3d4 | 73 | if (STRINGP (obj)) |
dcfdbac7 | 74 | { |
5245463a | 75 | int multibyte = STRING_MULTIBYTE (obj); |
a0615d90 | 76 | |
dcfdbac7 | 77 | obj = Fcopy_sequence (obj); |
d5db4077 | 78 | len = SBYTES (obj); |
5245463a RS |
79 | |
80 | /* Scan all single-byte characters from start of string. */ | |
81 | for (i = 0; i < len;) | |
dcfdbac7 | 82 | { |
d5db4077 | 83 | c = SREF (obj, i); |
5245463a | 84 | |
a0615d90 KH |
85 | if (multibyte && c >= 0x80) |
86 | /* A multibyte character can't be handled in this | |
87 | simple loop. */ | |
88 | break; | |
96927ba4 | 89 | if (inword && flag != CASE_CAPITALIZE_UP) |
dcfdbac7 | 90 | c = DOWNCASE (c); |
96927ba4 RS |
91 | else if (!UPPERCASEP (c) |
92 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
dcfdbac7 | 93 | c = UPCASE1 (c); |
5245463a RS |
94 | /* If this char won't fit in a single-byte string. |
95 | fall out to the multibyte case. */ | |
96 | if (multibyte ? ! ASCII_BYTE_P (c) | |
97 | : ! SINGLE_BYTE_CHAR_P (c)) | |
98 | break; | |
99 | ||
f5b81cd8 | 100 | SSET (obj, i, c); |
96927ba4 | 101 | if ((int) flag >= (int) CASE_CAPITALIZE) |
dcfdbac7 | 102 | inword = SYNTAX (c) == Sword; |
5245463a | 103 | i++; |
dcfdbac7 | 104 | } |
5245463a RS |
105 | |
106 | /* If we didn't do the whole string as single-byte, | |
107 | scan the rest in a more complex way. */ | |
a0615d90 KH |
108 | if (i < len) |
109 | { | |
110 | /* The work is not yet finished because of a multibyte | |
111 | character just encountered. */ | |
8d0941b6 | 112 | int fromlen, j_byte = i; |
2b3cb54d KS |
113 | char *buf; |
114 | int bufsize; | |
115 | USE_SAFE_ALLOCA; | |
116 | ||
117 | bufsize = (len - i) * MAX_MULTIBYTE_LENGTH + i; | |
118 | SAFE_ALLOCA (buf, char *, bufsize); | |
a0615d90 KH |
119 | |
120 | /* Copy data already handled. */ | |
d5db4077 | 121 | bcopy (SDATA (obj), buf, i); |
a0615d90 | 122 | |
5245463a | 123 | /* From now on, I counts bytes. */ |
a0615d90 KH |
124 | while (i < len) |
125 | { | |
d5db4077 | 126 | c = STRING_CHAR_AND_LENGTH (SDATA (obj) + i, |
a0615d90 KH |
127 | len - i, fromlen); |
128 | if (inword && flag != CASE_CAPITALIZE_UP) | |
129 | c = DOWNCASE (c); | |
130 | else if (!UPPERCASEP (c) | |
131 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
132 | c = UPCASE1 (c); | |
a0615d90 | 133 | i += fromlen; |
66da2880 | 134 | j_byte += CHAR_STRING (c, buf + j_byte); |
a0615d90 KH |
135 | if ((int) flag >= (int) CASE_CAPITALIZE) |
136 | inword = SYNTAX (c) == Sword; | |
137 | } | |
d5db4077 | 138 | obj = make_multibyte_string (buf, SCHARS (obj), |
f16d5106 | 139 | j_byte); |
2b3cb54d | 140 | SAFE_FREE (bufsize); |
a0615d90 | 141 | } |
dcfdbac7 JB |
142 | return obj; |
143 | } | |
b37902c8 | 144 | obj = wrong_type_argument (Qchar_or_string_p, obj); |
dcfdbac7 JB |
145 | } |
146 | } | |
147 | ||
148 | DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0, | |
fdb82f93 PJ |
149 | doc: /* Convert argument to upper case and return that. |
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 | See also `capitalize', `downcase' and `upcase-initials'. */) | |
153 | (obj) | |
dcfdbac7 JB |
154 | Lisp_Object obj; |
155 | { | |
156 | return casify_object (CASE_UP, obj); | |
157 | } | |
158 | ||
159 | DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0, | |
fdb82f93 PJ |
160 | doc: /* Convert argument to lower case and return that. |
161 | The argument may be a character or string. The result has the same type. | |
162 | The argument object is not altered--the value is a copy. */) | |
163 | (obj) | |
dcfdbac7 JB |
164 | Lisp_Object obj; |
165 | { | |
166 | return casify_object (CASE_DOWN, obj); | |
167 | } | |
168 | ||
169 | DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0, | |
fdb82f93 PJ |
170 | doc: /* Convert argument to capitalized form and return that. |
171 | This means that each word's first character is upper case | |
172 | and the rest is lower case. | |
173 | The argument may be a character or string. The result has the same type. | |
174 | The argument object is not altered--the value is a copy. */) | |
175 | (obj) | |
dcfdbac7 JB |
176 | Lisp_Object obj; |
177 | { | |
178 | return casify_object (CASE_CAPITALIZE, obj); | |
179 | } | |
96927ba4 | 180 | |
2371fad4 KH |
181 | /* Like Fcapitalize but change only the initials. */ |
182 | ||
8cef1f78 | 183 | DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0, |
fdb82f93 PJ |
184 | doc: /* Convert the initial of each word in the argument to upper case. |
185 | Do not change the other letters of each word. | |
186 | The argument may be a character or string. The result has the same type. | |
187 | The argument object is not altered--the value is a copy. */) | |
188 | (obj) | |
8cef1f78 RS |
189 | Lisp_Object obj; |
190 | { | |
191 | return casify_object (CASE_CAPITALIZE_UP, obj); | |
192 | } | |
dcfdbac7 JB |
193 | \f |
194 | /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
195 | b and e specify range of buffer to operate on. */ | |
196 | ||
dfcf069d | 197 | void |
dcfdbac7 JB |
198 | casify_region (flag, b, e) |
199 | enum case_action flag; | |
200 | Lisp_Object b, e; | |
201 | { | |
202 | register int i; | |
203 | register int c; | |
204 | register int inword = flag == CASE_DOWN; | |
a0615d90 | 205 | register int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
2371fad4 | 206 | int start, end; |
4c7b7eab | 207 | int start_byte, end_byte; |
66da2880 | 208 | int changed = 0; |
dcfdbac7 JB |
209 | |
210 | if (EQ (b, e)) | |
211 | /* Not modifying because nothing marked */ | |
212 | return; | |
213 | ||
bd47bd35 RS |
214 | /* If the case table is flagged as modified, rescan it. */ |
215 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
216 | Fset_case_table (current_buffer->downcase_table); | |
217 | ||
dcfdbac7 | 218 | validate_region (&b, &e); |
2371fad4 KH |
219 | start = XFASTINT (b); |
220 | end = XFASTINT (e); | |
221 | modify_region (current_buffer, start, end); | |
222 | record_change (start, end - start); | |
4c7b7eab RS |
223 | start_byte = CHAR_TO_BYTE (start); |
224 | end_byte = CHAR_TO_BYTE (end); | |
dcfdbac7 | 225 | |
66da2880 | 226 | for (i = start_byte; i < end_byte; i++, start++) |
a04538da | 227 | { |
66da2880 KH |
228 | int c2; |
229 | c = c2 = FETCH_BYTE (i); | |
a0615d90 KH |
230 | if (multibyte && c >= 0x80) |
231 | /* A multibyte character can't be handled in this simple loop. */ | |
232 | break; | |
233 | if (inword && flag != CASE_CAPITALIZE_UP) | |
234 | c = DOWNCASE (c); | |
235 | else if (!UPPERCASEP (c) | |
236 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
237 | c = UPCASE1 (c); | |
238 | FETCH_BYTE (i) = c; | |
66da2880 KH |
239 | if (c != c2) |
240 | changed = 1; | |
a0615d90 | 241 | if ((int) flag >= (int) CASE_CAPITALIZE) |
cdeb3480 | 242 | inword = SYNTAX (c) == Sword && (inword || !SYNTAX_PREFIX (c)); |
a04538da | 243 | } |
4c7b7eab | 244 | if (i < end_byte) |
dcfdbac7 | 245 | { |
a0615d90 KH |
246 | /* The work is not yet finished because of a multibyte character |
247 | just encountered. */ | |
4c7b7eab RS |
248 | int opoint = PT; |
249 | int opoint_byte = PT_BYTE; | |
250 | int c2; | |
a04538da | 251 | |
4c7b7eab | 252 | while (i < end_byte) |
a04538da | 253 | { |
a0615d90 KH |
254 | if ((c = FETCH_BYTE (i)) >= 0x80) |
255 | c = FETCH_MULTIBYTE_CHAR (i); | |
256 | c2 = c; | |
a04538da | 257 | if (inword && flag != CASE_CAPITALIZE_UP) |
a0615d90 KH |
258 | c2 = DOWNCASE (c); |
259 | else if (!UPPERCASEP (c) | |
a04538da | 260 | && (!inword || flag != CASE_CAPITALIZE_UP)) |
a0615d90 KH |
261 | c2 = UPCASE1 (c); |
262 | if (c != c2) | |
a04538da KH |
263 | { |
264 | int fromlen, tolen, j; | |
66da2880 | 265 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
a04538da | 266 | |
66da2880 | 267 | changed = 1; |
a04538da | 268 | /* Handle the most likely case */ |
a0615d90 KH |
269 | if (c < 0400 && c2 < 0400) |
270 | FETCH_BYTE (i) = c2; | |
66da2880 KH |
271 | else if (fromlen = CHAR_STRING (c, str), |
272 | tolen = CHAR_STRING (c2, str), | |
a04538da KH |
273 | fromlen == tolen) |
274 | { | |
275 | for (j = 0; j < tolen; ++j) | |
276 | FETCH_BYTE (i + j) = str[j]; | |
277 | } | |
278 | else | |
279 | { | |
280 | error ("Can't casify letters that change length"); | |
281 | #if 0 /* This is approximately what we'd like to be able to do here */ | |
282 | if (tolen < fromlen) | |
7dae4502 | 283 | del_range_1 (i + tolen, i + fromlen, 0, 0); |
a04538da KH |
284 | else if (tolen > fromlen) |
285 | { | |
286 | TEMP_SET_PT (i + fromlen); | |
4c7b7eab | 287 | insert_1 (str + fromlen, tolen - fromlen, 1, 0, 0); |
a04538da KH |
288 | } |
289 | #endif | |
290 | } | |
291 | } | |
292 | if ((int) flag >= (int) CASE_CAPITALIZE) | |
a0615d90 | 293 | inword = SYNTAX (c2) == Sword; |
66da2880 | 294 | INC_BOTH (start, i); |
a04538da | 295 | } |
4c7b7eab | 296 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
dcfdbac7 JB |
297 | } |
298 | ||
66da2880 KH |
299 | start = XFASTINT (b); |
300 | if (changed) | |
301 | { | |
302 | signal_after_change (start, end - start, end - start); | |
303 | update_compositions (start, end, CHECK_ALL); | |
304 | } | |
dcfdbac7 JB |
305 | } |
306 | ||
307 | DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r", | |
fdb82f93 PJ |
308 | doc: /* Convert the region to upper case. In programs, wants two arguments. |
309 | These arguments specify the starting and ending character numbers of | |
310 | the region to operate on. When used as a command, the text between | |
311 | point and the mark is operated on. | |
312 | See also `capitalize-region'. */) | |
313 | (beg, end) | |
8c22d56c | 314 | Lisp_Object beg, end; |
dcfdbac7 | 315 | { |
8c22d56c | 316 | casify_region (CASE_UP, beg, end); |
dcfdbac7 JB |
317 | return Qnil; |
318 | } | |
319 | ||
320 | DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r", | |
fdb82f93 PJ |
321 | doc: /* Convert the region to lower case. In programs, wants two arguments. |
322 | These arguments specify the starting and ending character numbers of | |
323 | the region to operate on. When used as a command, the text between | |
324 | point and the mark is operated on. */) | |
325 | (beg, end) | |
8c22d56c | 326 | Lisp_Object beg, end; |
dcfdbac7 | 327 | { |
8c22d56c | 328 | casify_region (CASE_DOWN, beg, end); |
dcfdbac7 JB |
329 | return Qnil; |
330 | } | |
331 | ||
332 | DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r", | |
fdb82f93 PJ |
333 | doc: /* Convert the region to capitalized form. |
334 | Capitalized form means each word's first character is upper case | |
335 | and the rest of it is lower case. | |
336 | In programs, give two arguments, the starting and ending | |
337 | character positions to operate on. */) | |
338 | (beg, end) | |
8c22d56c | 339 | Lisp_Object beg, end; |
dcfdbac7 | 340 | { |
8c22d56c | 341 | casify_region (CASE_CAPITALIZE, beg, end); |
dcfdbac7 JB |
342 | return Qnil; |
343 | } | |
344 | ||
2371fad4 KH |
345 | /* Like Fcapitalize_region but change only the initials. */ |
346 | ||
8cef1f78 RS |
347 | DEFUN ("upcase-initials-region", Fupcase_initials_region, |
348 | Supcase_initials_region, 2, 2, "r", | |
fdb82f93 PJ |
349 | doc: /* Upcase the initial of each word in the region. |
350 | Subsequent letters of each word are not changed. | |
351 | In programs, give two arguments, the starting and ending | |
352 | character positions to operate on. */) | |
353 | (beg, end) | |
8c22d56c | 354 | Lisp_Object beg, end; |
8cef1f78 | 355 | { |
8c22d56c | 356 | casify_region (CASE_CAPITALIZE_UP, beg, end); |
8cef1f78 RS |
357 | return Qnil; |
358 | } | |
dcfdbac7 JB |
359 | \f |
360 | Lisp_Object | |
34628a90 | 361 | operate_on_word (arg, newpoint) |
dcfdbac7 | 362 | Lisp_Object arg; |
34628a90 | 363 | int *newpoint; |
dcfdbac7 | 364 | { |
39fb55ff | 365 | Lisp_Object val; |
34628a90 | 366 | int farend; |
2371fad4 | 367 | int iarg; |
dcfdbac7 | 368 | |
b7826503 | 369 | CHECK_NUMBER (arg); |
2371fad4 | 370 | iarg = XINT (arg); |
6ec8bbd2 | 371 | farend = scan_words (PT, iarg); |
dcfdbac7 | 372 | if (!farend) |
2371fad4 | 373 | farend = iarg > 0 ? ZV : BEGV; |
dcfdbac7 | 374 | |
6ec8bbd2 | 375 | *newpoint = PT > farend ? PT : farend; |
18e23fd0 | 376 | XSETFASTINT (val, farend); |
dcfdbac7 JB |
377 | |
378 | return val; | |
379 | } | |
380 | ||
381 | DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p", | |
fdb82f93 PJ |
382 | doc: /* Convert following word (or ARG words) to upper case, moving over. |
383 | With negative argument, convert previous words but do not move. | |
384 | See also `capitalize-word'. */) | |
385 | (arg) | |
dcfdbac7 JB |
386 | Lisp_Object arg; |
387 | { | |
34628a90 RS |
388 | Lisp_Object beg, end; |
389 | int newpoint; | |
6ec8bbd2 | 390 | XSETFASTINT (beg, PT); |
34628a90 RS |
391 | end = operate_on_word (arg, &newpoint); |
392 | casify_region (CASE_UP, beg, end); | |
393 | SET_PT (newpoint); | |
dcfdbac7 JB |
394 | return Qnil; |
395 | } | |
396 | ||
397 | DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p", | |
fdb82f93 PJ |
398 | doc: /* Convert following word (or ARG words) to lower case, moving over. |
399 | With negative argument, convert previous words but do not move. */) | |
400 | (arg) | |
dcfdbac7 JB |
401 | Lisp_Object arg; |
402 | { | |
34628a90 RS |
403 | Lisp_Object beg, end; |
404 | int newpoint; | |
6ec8bbd2 | 405 | XSETFASTINT (beg, PT); |
34628a90 RS |
406 | end = operate_on_word (arg, &newpoint); |
407 | casify_region (CASE_DOWN, beg, end); | |
408 | SET_PT (newpoint); | |
dcfdbac7 JB |
409 | return Qnil; |
410 | } | |
411 | ||
412 | DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p", | |
fdb82f93 PJ |
413 | doc: /* Capitalize the following word (or ARG words), moving over. |
414 | This gives the word(s) a first character in upper case | |
415 | and the rest lower case. | |
416 | With negative argument, capitalize previous words but do not move. */) | |
417 | (arg) | |
dcfdbac7 JB |
418 | Lisp_Object arg; |
419 | { | |
34628a90 RS |
420 | Lisp_Object beg, end; |
421 | int newpoint; | |
6ec8bbd2 | 422 | XSETFASTINT (beg, PT); |
34628a90 RS |
423 | end = operate_on_word (arg, &newpoint); |
424 | casify_region (CASE_CAPITALIZE, beg, end); | |
425 | SET_PT (newpoint); | |
dcfdbac7 JB |
426 | return Qnil; |
427 | } | |
428 | \f | |
dfcf069d | 429 | void |
dcfdbac7 JB |
430 | syms_of_casefiddle () |
431 | { | |
a04538da KH |
432 | Qidentity = intern ("identity"); |
433 | staticpro (&Qidentity); | |
dcfdbac7 JB |
434 | defsubr (&Supcase); |
435 | defsubr (&Sdowncase); | |
436 | defsubr (&Scapitalize); | |
8cef1f78 | 437 | defsubr (&Supcase_initials); |
dcfdbac7 JB |
438 | defsubr (&Supcase_region); |
439 | defsubr (&Sdowncase_region); | |
440 | defsubr (&Scapitalize_region); | |
8cef1f78 | 441 | defsubr (&Supcase_initials_region); |
dcfdbac7 JB |
442 | defsubr (&Supcase_word); |
443 | defsubr (&Sdowncase_word); | |
444 | defsubr (&Scapitalize_word); | |
445 | } | |
446 | ||
dfcf069d | 447 | void |
dcfdbac7 JB |
448 | keys_of_casefiddle () |
449 | { | |
450 | initial_define_key (control_x_map, Ctl('U'), "upcase-region"); | |
d427b66a | 451 | Fput (intern ("upcase-region"), Qdisabled, Qt); |
dcfdbac7 | 452 | initial_define_key (control_x_map, Ctl('L'), "downcase-region"); |
d427b66a JB |
453 | Fput (intern ("downcase-region"), Qdisabled, Qt); |
454 | ||
dcfdbac7 JB |
455 | initial_define_key (meta_map, 'u', "upcase-word"); |
456 | initial_define_key (meta_map, 'l', "downcase-word"); | |
457 | initial_define_key (meta_map, 'c', "capitalize-word"); | |
458 | } | |
ab5796a9 MB |
459 | |
460 | /* arch-tag: 60a73c66-5489-47e7-a81f-cead4057c526 | |
461 | (do not change this comment) */ |