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