Commit | Line | Data |
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dcfdbac7 | 1 | /* GNU Emacs case conversion functions. |
f98a8aa9 | 2 | Copyright (C) 1985,94,97,98,99, 2001, 2002, 2004, 2005 |
a0ecb2ac | 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); |
f98a8aa9 | 76 | int n; |
a0615d90 | 77 | |
dcfdbac7 | 78 | obj = Fcopy_sequence (obj); |
d5db4077 | 79 | len = SBYTES (obj); |
5245463a | 80 | |
f98a8aa9 KH |
81 | /* I counts bytes, and N counts chars. */ |
82 | for (i = n = 0; i < len; n++) | |
dcfdbac7 | 83 | { |
f98a8aa9 KH |
84 | int from_len = 1, to_len = 1; |
85 | ||
d5db4077 | 86 | c = SREF (obj, i); |
5245463a | 87 | |
a0615d90 | 88 | if (multibyte && c >= 0x80) |
f98a8aa9 | 89 | c = STRING_CHAR_AND_LENGTH (SDATA (obj) + i, len -i, from_len); |
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)) | |
dcfdbac7 | 94 | c = UPCASE1 (c); |
f98a8aa9 KH |
95 | if (ASCII_BYTE_P (c) || (! multibyte && SINGLE_BYTE_CHAR_P (c))) |
96 | SSET (obj, i, c); | |
97 | else | |
a0615d90 | 98 | { |
f98a8aa9 KH |
99 | to_len = CHAR_BYTES (c); |
100 | if (from_len == to_len) | |
101 | CHAR_STRING (c, SDATA (obj) + i); | |
102 | else | |
103 | Faset (obj, make_number (n), make_number (c)); | |
a0615d90 | 104 | } |
f98a8aa9 KH |
105 | if ((int) flag >= (int) CASE_CAPITALIZE) |
106 | inword = SYNTAX (c) == Sword; | |
107 | i += to_len; | |
a0615d90 | 108 | } |
dcfdbac7 JB |
109 | return obj; |
110 | } | |
b37902c8 | 111 | obj = wrong_type_argument (Qchar_or_string_p, obj); |
dcfdbac7 JB |
112 | } |
113 | } | |
114 | ||
115 | DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0, | |
fdb82f93 PJ |
116 | doc: /* Convert argument to upper case and return that. |
117 | The argument may be a character or string. The result has the same type. | |
118 | The argument object is not altered--the value is a copy. | |
119 | See also `capitalize', `downcase' and `upcase-initials'. */) | |
120 | (obj) | |
dcfdbac7 JB |
121 | Lisp_Object obj; |
122 | { | |
123 | return casify_object (CASE_UP, obj); | |
124 | } | |
125 | ||
126 | DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0, | |
fdb82f93 PJ |
127 | doc: /* Convert argument to lower case and return that. |
128 | The argument may be a character or string. The result has the same type. | |
129 | The argument object is not altered--the value is a copy. */) | |
130 | (obj) | |
dcfdbac7 JB |
131 | Lisp_Object obj; |
132 | { | |
133 | return casify_object (CASE_DOWN, obj); | |
134 | } | |
135 | ||
136 | DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0, | |
fdb82f93 PJ |
137 | doc: /* Convert argument to capitalized form and return that. |
138 | This means that each word's first character is upper case | |
139 | and the rest is lower case. | |
140 | The argument may be a character or string. The result has the same type. | |
141 | The argument object is not altered--the value is a copy. */) | |
142 | (obj) | |
dcfdbac7 JB |
143 | Lisp_Object obj; |
144 | { | |
145 | return casify_object (CASE_CAPITALIZE, obj); | |
146 | } | |
96927ba4 | 147 | |
2371fad4 KH |
148 | /* Like Fcapitalize but change only the initials. */ |
149 | ||
8cef1f78 | 150 | DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0, |
fdb82f93 PJ |
151 | doc: /* Convert the initial of each word in the argument to upper case. |
152 | Do not change the other letters of each word. | |
153 | The argument may be a character or string. The result has the same type. | |
154 | The argument object is not altered--the value is a copy. */) | |
155 | (obj) | |
8cef1f78 RS |
156 | Lisp_Object obj; |
157 | { | |
158 | return casify_object (CASE_CAPITALIZE_UP, obj); | |
159 | } | |
dcfdbac7 JB |
160 | \f |
161 | /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
162 | b and e specify range of buffer to operate on. */ | |
163 | ||
dfcf069d | 164 | void |
dcfdbac7 JB |
165 | casify_region (flag, b, e) |
166 | enum case_action flag; | |
167 | Lisp_Object b, e; | |
168 | { | |
169 | register int i; | |
170 | register int c; | |
171 | register int inword = flag == CASE_DOWN; | |
a0615d90 | 172 | register int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
2371fad4 | 173 | int start, end; |
4c7b7eab | 174 | int start_byte, end_byte; |
66da2880 | 175 | int changed = 0; |
dcfdbac7 JB |
176 | |
177 | if (EQ (b, e)) | |
178 | /* Not modifying because nothing marked */ | |
179 | return; | |
180 | ||
bd47bd35 RS |
181 | /* If the case table is flagged as modified, rescan it. */ |
182 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
183 | Fset_case_table (current_buffer->downcase_table); | |
184 | ||
dcfdbac7 | 185 | validate_region (&b, &e); |
2371fad4 KH |
186 | start = XFASTINT (b); |
187 | end = XFASTINT (e); | |
188 | modify_region (current_buffer, start, end); | |
189 | record_change (start, end - start); | |
4c7b7eab RS |
190 | start_byte = CHAR_TO_BYTE (start); |
191 | end_byte = CHAR_TO_BYTE (end); | |
dcfdbac7 | 192 | |
66da2880 | 193 | for (i = start_byte; i < end_byte; i++, start++) |
a04538da | 194 | { |
66da2880 KH |
195 | int c2; |
196 | c = c2 = FETCH_BYTE (i); | |
a0615d90 KH |
197 | if (multibyte && c >= 0x80) |
198 | /* A multibyte character can't be handled in this simple loop. */ | |
199 | break; | |
200 | if (inword && flag != CASE_CAPITALIZE_UP) | |
201 | c = DOWNCASE (c); | |
202 | else if (!UPPERCASEP (c) | |
203 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
204 | c = UPCASE1 (c); | |
5d19ee8a RS |
205 | if (multibyte && c >= 0x80) |
206 | /* A multibyte result character can't be handled in this | |
207 | simple loop. */ | |
208 | break; | |
a0615d90 | 209 | FETCH_BYTE (i) = c; |
66da2880 KH |
210 | if (c != c2) |
211 | changed = 1; | |
a0615d90 | 212 | if ((int) flag >= (int) CASE_CAPITALIZE) |
cdeb3480 | 213 | inword = SYNTAX (c) == Sword && (inword || !SYNTAX_PREFIX (c)); |
a04538da | 214 | } |
4c7b7eab | 215 | if (i < end_byte) |
dcfdbac7 | 216 | { |
a0615d90 KH |
217 | /* The work is not yet finished because of a multibyte character |
218 | just encountered. */ | |
4c7b7eab RS |
219 | int opoint = PT; |
220 | int opoint_byte = PT_BYTE; | |
221 | int c2; | |
a04538da | 222 | |
f98a8aa9 | 223 | while (start < end) |
a04538da | 224 | { |
a0615d90 KH |
225 | if ((c = FETCH_BYTE (i)) >= 0x80) |
226 | c = FETCH_MULTIBYTE_CHAR (i); | |
227 | c2 = c; | |
a04538da | 228 | if (inword && flag != CASE_CAPITALIZE_UP) |
a0615d90 KH |
229 | c2 = DOWNCASE (c); |
230 | else if (!UPPERCASEP (c) | |
a04538da | 231 | && (!inword || flag != CASE_CAPITALIZE_UP)) |
a0615d90 KH |
232 | c2 = UPCASE1 (c); |
233 | if (c != c2) | |
a04538da KH |
234 | { |
235 | int fromlen, tolen, j; | |
66da2880 | 236 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
a04538da | 237 | |
66da2880 | 238 | changed = 1; |
a04538da | 239 | /* Handle the most likely case */ |
a0615d90 KH |
240 | if (c < 0400 && c2 < 0400) |
241 | FETCH_BYTE (i) = c2; | |
66da2880 KH |
242 | else if (fromlen = CHAR_STRING (c, str), |
243 | tolen = CHAR_STRING (c2, str), | |
a04538da KH |
244 | fromlen == tolen) |
245 | { | |
5d19ee8a | 246 | /* Length is unchanged. */ |
a04538da KH |
247 | for (j = 0; j < tolen; ++j) |
248 | FETCH_BYTE (i + j) = str[j]; | |
249 | } | |
250 | else | |
f98a8aa9 KH |
251 | { |
252 | /* Replace one character with the other, | |
253 | keeping text properties the same. */ | |
254 | replace_range_2 (start, i, | |
255 | start + 1, i + fromlen, | |
256 | str, 1, tolen, | |
257 | 1); | |
cc4ff429 KH |
258 | if (opoint > start) |
259 | opoint_byte += tolen - fromlen; | |
f98a8aa9 | 260 | } |
a04538da KH |
261 | } |
262 | if ((int) flag >= (int) CASE_CAPITALIZE) | |
a0615d90 | 263 | inword = SYNTAX (c2) == Sword; |
66da2880 | 264 | INC_BOTH (start, i); |
a04538da | 265 | } |
4c7b7eab | 266 | TEMP_SET_PT_BOTH (opoint, opoint_byte); |
dcfdbac7 JB |
267 | } |
268 | ||
66da2880 KH |
269 | start = XFASTINT (b); |
270 | if (changed) | |
271 | { | |
272 | signal_after_change (start, end - start, end - start); | |
273 | update_compositions (start, end, CHECK_ALL); | |
274 | } | |
dcfdbac7 JB |
275 | } |
276 | ||
277 | DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r", | |
fdb82f93 PJ |
278 | doc: /* Convert the region to upper case. In programs, wants two arguments. |
279 | These arguments specify the starting and ending character numbers of | |
280 | the region to operate on. When used as a command, the text between | |
281 | point and the mark is operated on. | |
282 | See also `capitalize-region'. */) | |
283 | (beg, end) | |
8c22d56c | 284 | Lisp_Object beg, end; |
dcfdbac7 | 285 | { |
8c22d56c | 286 | casify_region (CASE_UP, beg, end); |
dcfdbac7 JB |
287 | return Qnil; |
288 | } | |
289 | ||
290 | DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r", | |
fdb82f93 PJ |
291 | doc: /* Convert the region to lower case. In programs, wants two arguments. |
292 | These arguments specify the starting and ending character numbers of | |
293 | the region to operate on. When used as a command, the text between | |
294 | point and the mark is operated on. */) | |
295 | (beg, end) | |
8c22d56c | 296 | Lisp_Object beg, end; |
dcfdbac7 | 297 | { |
8c22d56c | 298 | casify_region (CASE_DOWN, beg, end); |
dcfdbac7 JB |
299 | return Qnil; |
300 | } | |
301 | ||
302 | DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r", | |
fdb82f93 PJ |
303 | doc: /* Convert the region to capitalized form. |
304 | Capitalized form means each word's first character is upper case | |
305 | and the rest of it is lower case. | |
306 | In programs, give two arguments, the starting and ending | |
307 | character positions to operate on. */) | |
308 | (beg, end) | |
8c22d56c | 309 | Lisp_Object beg, end; |
dcfdbac7 | 310 | { |
8c22d56c | 311 | casify_region (CASE_CAPITALIZE, beg, end); |
dcfdbac7 JB |
312 | return Qnil; |
313 | } | |
314 | ||
2371fad4 KH |
315 | /* Like Fcapitalize_region but change only the initials. */ |
316 | ||
8cef1f78 RS |
317 | DEFUN ("upcase-initials-region", Fupcase_initials_region, |
318 | Supcase_initials_region, 2, 2, "r", | |
fdb82f93 PJ |
319 | doc: /* Upcase the initial of each word in the region. |
320 | Subsequent letters of each word are not changed. | |
321 | In programs, give two arguments, the starting and ending | |
322 | character positions to operate on. */) | |
323 | (beg, end) | |
8c22d56c | 324 | Lisp_Object beg, end; |
8cef1f78 | 325 | { |
8c22d56c | 326 | casify_region (CASE_CAPITALIZE_UP, beg, end); |
8cef1f78 RS |
327 | return Qnil; |
328 | } | |
dcfdbac7 JB |
329 | \f |
330 | Lisp_Object | |
34628a90 | 331 | operate_on_word (arg, newpoint) |
dcfdbac7 | 332 | Lisp_Object arg; |
34628a90 | 333 | int *newpoint; |
dcfdbac7 | 334 | { |
39fb55ff | 335 | Lisp_Object val; |
34628a90 | 336 | int farend; |
2371fad4 | 337 | int iarg; |
dcfdbac7 | 338 | |
b7826503 | 339 | CHECK_NUMBER (arg); |
2371fad4 | 340 | iarg = XINT (arg); |
6ec8bbd2 | 341 | farend = scan_words (PT, iarg); |
dcfdbac7 | 342 | if (!farend) |
2371fad4 | 343 | farend = iarg > 0 ? ZV : BEGV; |
dcfdbac7 | 344 | |
6ec8bbd2 | 345 | *newpoint = PT > farend ? PT : farend; |
18e23fd0 | 346 | XSETFASTINT (val, farend); |
dcfdbac7 JB |
347 | |
348 | return val; | |
349 | } | |
350 | ||
351 | DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p", | |
fdb82f93 PJ |
352 | doc: /* Convert following word (or ARG words) to upper case, moving over. |
353 | With negative argument, convert previous words but do not move. | |
354 | See also `capitalize-word'. */) | |
355 | (arg) | |
dcfdbac7 JB |
356 | Lisp_Object arg; |
357 | { | |
34628a90 RS |
358 | Lisp_Object beg, end; |
359 | int newpoint; | |
6ec8bbd2 | 360 | XSETFASTINT (beg, PT); |
34628a90 RS |
361 | end = operate_on_word (arg, &newpoint); |
362 | casify_region (CASE_UP, beg, end); | |
363 | SET_PT (newpoint); | |
dcfdbac7 JB |
364 | return Qnil; |
365 | } | |
366 | ||
367 | DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p", | |
fdb82f93 PJ |
368 | doc: /* Convert following word (or ARG words) to lower case, moving over. |
369 | With negative argument, convert previous words but do not move. */) | |
370 | (arg) | |
dcfdbac7 JB |
371 | Lisp_Object arg; |
372 | { | |
34628a90 RS |
373 | Lisp_Object beg, end; |
374 | int newpoint; | |
6ec8bbd2 | 375 | XSETFASTINT (beg, PT); |
34628a90 RS |
376 | end = operate_on_word (arg, &newpoint); |
377 | casify_region (CASE_DOWN, beg, end); | |
378 | SET_PT (newpoint); | |
dcfdbac7 JB |
379 | return Qnil; |
380 | } | |
381 | ||
382 | DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p", | |
fdb82f93 PJ |
383 | doc: /* Capitalize the following word (or ARG words), moving over. |
384 | This gives the word(s) a first character in upper case | |
385 | and the rest lower case. | |
386 | With negative argument, capitalize previous words but do not move. */) | |
387 | (arg) | |
dcfdbac7 JB |
388 | Lisp_Object arg; |
389 | { | |
34628a90 RS |
390 | Lisp_Object beg, end; |
391 | int newpoint; | |
6ec8bbd2 | 392 | XSETFASTINT (beg, PT); |
34628a90 RS |
393 | end = operate_on_word (arg, &newpoint); |
394 | casify_region (CASE_CAPITALIZE, beg, end); | |
395 | SET_PT (newpoint); | |
dcfdbac7 JB |
396 | return Qnil; |
397 | } | |
398 | \f | |
dfcf069d | 399 | void |
dcfdbac7 JB |
400 | syms_of_casefiddle () |
401 | { | |
a04538da KH |
402 | Qidentity = intern ("identity"); |
403 | staticpro (&Qidentity); | |
dcfdbac7 JB |
404 | defsubr (&Supcase); |
405 | defsubr (&Sdowncase); | |
406 | defsubr (&Scapitalize); | |
8cef1f78 | 407 | defsubr (&Supcase_initials); |
dcfdbac7 JB |
408 | defsubr (&Supcase_region); |
409 | defsubr (&Sdowncase_region); | |
410 | defsubr (&Scapitalize_region); | |
8cef1f78 | 411 | defsubr (&Supcase_initials_region); |
dcfdbac7 JB |
412 | defsubr (&Supcase_word); |
413 | defsubr (&Sdowncase_word); | |
414 | defsubr (&Scapitalize_word); | |
415 | } | |
416 | ||
dfcf069d | 417 | void |
dcfdbac7 JB |
418 | keys_of_casefiddle () |
419 | { | |
420 | initial_define_key (control_x_map, Ctl('U'), "upcase-region"); | |
d427b66a | 421 | Fput (intern ("upcase-region"), Qdisabled, Qt); |
dcfdbac7 | 422 | initial_define_key (control_x_map, Ctl('L'), "downcase-region"); |
d427b66a JB |
423 | Fput (intern ("downcase-region"), Qdisabled, Qt); |
424 | ||
dcfdbac7 JB |
425 | initial_define_key (meta_map, 'u', "upcase-word"); |
426 | initial_define_key (meta_map, 'l', "downcase-word"); | |
427 | initial_define_key (meta_map, 'c', "capitalize-word"); | |
428 | } | |
ab5796a9 MB |
429 | |
430 | /* arch-tag: 60a73c66-5489-47e7-a81f-cead4057c526 | |
431 | (do not change this comment) */ |