Commit | Line | Data |
---|---|---|
dcfdbac7 | 1 | /* GNU Emacs case conversion functions. |
0b5538bd | 2 | Copyright (C) 1985, 1994, 1997, 1998, 1999, 2001, 2002, 2003, 2004, |
76b6f707 | 3 | 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
dcfdbac7 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
dcfdbac7 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
dcfdbac7 JB |
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 | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
dcfdbac7 JB |
19 | |
20 | ||
18160b98 | 21 | #include <config.h> |
dcfdbac7 JB |
22 | #include "lisp.h" |
23 | #include "buffer.h" | |
83be827a | 24 | #include "character.h" |
dcfdbac7 JB |
25 | #include "commands.h" |
26 | #include "syntax.h" | |
66da2880 | 27 | #include "composite.h" |
e35f6ff7 | 28 | #include "keymap.h" |
dcfdbac7 JB |
29 | |
30 | enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP}; | |
a04538da KH |
31 | |
32 | Lisp_Object Qidentity; | |
dcfdbac7 JB |
33 | \f |
34 | Lisp_Object | |
35 | casify_object (flag, obj) | |
36 | enum case_action flag; | |
37 | Lisp_Object obj; | |
38 | { | |
2422e50a | 39 | register int c, c1; |
dcfdbac7 JB |
40 | register int inword = flag == CASE_DOWN; |
41 | ||
bd47bd35 RS |
42 | /* If the case table is flagged as modified, rescan it. */ |
43 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
44 | Fset_case_table (current_buffer->downcase_table); | |
45 | ||
0d64f689 | 46 | if (INTEGERP (obj)) |
dcfdbac7 | 47 | { |
0d64f689 KH |
48 | int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
49 | | CHAR_SHIFT | CHAR_CTL | CHAR_META); | |
50 | int flags = XINT (obj) & flagbits; | |
51 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); | |
52 | ||
53 | /* If the character has higher bits set | |
54 | above the flags, return it unchanged. | |
55 | It is not a real character. */ | |
56 | if ((unsigned) XFASTINT (obj) > (unsigned) flagbits) | |
57 | return obj; | |
58 | ||
59 | c1 = XFASTINT (obj) & ~flagbits; | |
1fb5aad7 SM |
60 | /* FIXME: Even if enable-multibyte-characters is nil, we may |
61 | manipulate multibyte chars. This means we have a bug for latin-1 | |
62 | chars since when we receive an int 128-255 we can't tell whether | |
63 | it's an eight-bit byte or a latin-1 char. */ | |
64 | if (c1 >= 256) | |
65 | multibyte = 1; | |
0d64f689 KH |
66 | if (! multibyte) |
67 | MAKE_CHAR_MULTIBYTE (c1); | |
68 | c = DOWNCASE (c1); | |
69 | if (inword) | |
70 | XSETFASTINT (obj, c | flags); | |
71 | else if (c == (XFASTINT (obj) & ~flagbits)) | |
dcfdbac7 | 72 | { |
0d64f689 KH |
73 | if (! inword) |
74 | c = UPCASE1 (c1); | |
2422e50a | 75 | if (! multibyte) |
0d64f689 KH |
76 | MAKE_CHAR_UNIBYTE (c); |
77 | XSETFASTINT (obj, c | flags); | |
dcfdbac7 | 78 | } |
0d64f689 KH |
79 | return obj; |
80 | } | |
5245463a | 81 | |
438eba3c SM |
82 | if (!STRINGP (obj)) |
83 | wrong_type_argument (Qchar_or_string_p, obj); | |
84 | else if (!STRING_MULTIBYTE (obj)) | |
0d64f689 | 85 | { |
438eba3c SM |
86 | EMACS_INT i; |
87 | EMACS_INT size = SCHARS (obj); | |
a0615d90 | 88 | |
0d64f689 | 89 | obj = Fcopy_sequence (obj); |
438eba3c | 90 | for (i = 0; i < size; i++) |
0d64f689 | 91 | { |
438eba3c | 92 | c = SREF (obj, i); |
0d64f689 | 93 | MAKE_CHAR_MULTIBYTE (c); |
0d64f689 KH |
94 | c1 = c; |
95 | if (inword && flag != CASE_CAPITALIZE_UP) | |
96 | c = DOWNCASE (c); | |
97 | else if (!UPPERCASEP (c) | |
98 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
99 | c = UPCASE1 (c1); | |
100 | if ((int) flag >= (int) CASE_CAPITALIZE) | |
101 | inword = (SYNTAX (c) == Sword); | |
102 | if (c != c1) | |
103 | { | |
0d64f689 | 104 | MAKE_CHAR_UNIBYTE (c); |
438eba3c SM |
105 | /* If the char can't be converted to a valid byte, just don't |
106 | change it. */ | |
107 | if (c >= 0 && c < 256) | |
108 | SSET (obj, i, c); | |
109 | } | |
110 | } | |
111 | return obj; | |
994b75e0 SM |
112 | } |
113 | else | |
114 | { | |
115 | EMACS_INT i, i_byte, size = SCHARS (obj); | |
116 | int len; | |
438eba3c SM |
117 | USE_SAFE_ALLOCA; |
118 | unsigned char *dst, *o; | |
119 | /* Over-allocate by 12%: this is a minor overhead, but should be | |
120 | sufficient in 99.999% of the cases to avoid a reallocation. */ | |
121 | EMACS_INT o_size = SBYTES (obj) + SBYTES (obj) / 8 + MAX_MULTIBYTE_LENGTH; | |
122 | SAFE_ALLOCA (dst, void *, o_size); | |
123 | o = dst; | |
124 | ||
125 | for (i = i_byte = 0; i < size; i++, i_byte += len) | |
126 | { | |
127 | if ((o - dst) + MAX_MULTIBYTE_LENGTH > o_size) | |
128 | { /* Not enough space for the next char: grow the destination. */ | |
129 | unsigned char *old_dst = dst; | |
130 | o_size += o_size; /* Probably overkill, but extremely rare. */ | |
131 | SAFE_ALLOCA (dst, void *, o_size); | |
132 | bcopy (old_dst, dst, o - old_dst); | |
133 | o = dst + (o - old_dst); | |
a0615d90 | 134 | } |
438eba3c SM |
135 | c = STRING_CHAR_AND_LENGTH (SDATA (obj) + i_byte, 0, len); |
136 | if (inword && flag != CASE_CAPITALIZE_UP) | |
137 | c = DOWNCASE (c); | |
138 | else if (!UPPERCASEP (c) | |
139 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
140 | c = UPCASE1 (c); | |
141 | if ((int) flag >= (int) CASE_CAPITALIZE) | |
142 | inword = (SYNTAX (c) == Sword); | |
143 | o += CHAR_STRING (c, o); | |
dcfdbac7 | 144 | } |
438eba3c SM |
145 | eassert (o - dst <= o_size); |
146 | obj = make_multibyte_string (dst, size, o - dst); | |
147 | SAFE_FREE (); | |
0d64f689 | 148 | return obj; |
dcfdbac7 JB |
149 | } |
150 | } | |
151 | ||
152 | DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0, | |
fdb82f93 PJ |
153 | doc: /* Convert argument to upper case and return that. |
154 | The argument may be a character or string. The result has the same type. | |
155 | The argument object is not altered--the value is a copy. | |
156 | See also `capitalize', `downcase' and `upcase-initials'. */) | |
157 | (obj) | |
dcfdbac7 JB |
158 | Lisp_Object obj; |
159 | { | |
160 | return casify_object (CASE_UP, obj); | |
161 | } | |
162 | ||
163 | DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0, | |
fdb82f93 PJ |
164 | doc: /* Convert argument to lower case and return that. |
165 | The argument may be a character or string. The result has the same type. | |
166 | The argument object is not altered--the value is a copy. */) | |
167 | (obj) | |
dcfdbac7 JB |
168 | Lisp_Object obj; |
169 | { | |
170 | return casify_object (CASE_DOWN, obj); | |
171 | } | |
172 | ||
173 | DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0, | |
fdb82f93 PJ |
174 | doc: /* Convert argument to capitalized form and return that. |
175 | This means that each word's first character is upper case | |
176 | and the rest is lower case. | |
177 | The argument may be a character or string. The result has the same type. | |
178 | The argument object is not altered--the value is a copy. */) | |
179 | (obj) | |
dcfdbac7 JB |
180 | Lisp_Object obj; |
181 | { | |
182 | return casify_object (CASE_CAPITALIZE, obj); | |
183 | } | |
96927ba4 | 184 | |
2371fad4 KH |
185 | /* Like Fcapitalize but change only the initials. */ |
186 | ||
8cef1f78 | 187 | DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0, |
fdb82f93 PJ |
188 | doc: /* Convert the initial of each word in the argument to upper case. |
189 | Do not change the other letters of each word. | |
190 | The argument may be a character or string. The result has the same type. | |
191 | The argument object is not altered--the value is a copy. */) | |
192 | (obj) | |
8cef1f78 RS |
193 | Lisp_Object obj; |
194 | { | |
195 | return casify_object (CASE_CAPITALIZE_UP, obj); | |
196 | } | |
dcfdbac7 JB |
197 | \f |
198 | /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
199 | b and e specify range of buffer to operate on. */ | |
200 | ||
dfcf069d | 201 | void |
dcfdbac7 JB |
202 | casify_region (flag, b, e) |
203 | enum case_action flag; | |
204 | Lisp_Object b, e; | |
205 | { | |
dcfdbac7 JB |
206 | register int c; |
207 | register int inword = flag == CASE_DOWN; | |
a0615d90 | 208 | register int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
7927d8e3 SM |
209 | EMACS_INT start, end; |
210 | EMACS_INT start_byte, end_byte; | |
211 | EMACS_INT first = -1, last; /* Position of first and last changes. */ | |
212 | EMACS_INT opoint = PT; | |
213 | EMACS_INT opoint_byte = PT_BYTE; | |
dcfdbac7 JB |
214 | |
215 | if (EQ (b, e)) | |
216 | /* Not modifying because nothing marked */ | |
217 | return; | |
218 | ||
bd47bd35 RS |
219 | /* If the case table is flagged as modified, rescan it. */ |
220 | if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1])) | |
221 | Fset_case_table (current_buffer->downcase_table); | |
222 | ||
dcfdbac7 | 223 | validate_region (&b, &e); |
2371fad4 KH |
224 | start = XFASTINT (b); |
225 | end = XFASTINT (e); | |
3e145152 | 226 | modify_region (current_buffer, start, end, 0); |
2371fad4 | 227 | record_change (start, end - start); |
4c7b7eab RS |
228 | start_byte = CHAR_TO_BYTE (start); |
229 | end_byte = CHAR_TO_BYTE (end); | |
dcfdbac7 | 230 | |
2422e50a | 231 | while (start < end) |
a04538da | 232 | { |
2422e50a KH |
233 | int c2, len; |
234 | ||
235 | if (multibyte) | |
236 | { | |
237 | c = FETCH_MULTIBYTE_CHAR (start_byte); | |
238 | len = CHAR_BYTES (c); | |
239 | } | |
240 | else | |
241 | { | |
242 | c = FETCH_BYTE (start_byte); | |
243 | MAKE_CHAR_MULTIBYTE (c); | |
244 | len = 1; | |
245 | } | |
246 | c2 = c; | |
a0615d90 KH |
247 | if (inword && flag != CASE_CAPITALIZE_UP) |
248 | c = DOWNCASE (c); | |
249 | else if (!UPPERCASEP (c) | |
250 | && (!inword || flag != CASE_CAPITALIZE_UP)) | |
251 | c = UPCASE1 (c); | |
a0615d90 | 252 | if ((int) flag >= (int) CASE_CAPITALIZE) |
8f924df7 | 253 | inword = ((SYNTAX (c) == Sword) && (inword || !SYNTAX_PREFIX (c))); |
2422e50a | 254 | if (c != c2) |
a04538da | 255 | { |
7927d8e3 SM |
256 | last = start; |
257 | if (first < 0) | |
258 | first = start; | |
259 | ||
2422e50a KH |
260 | if (! multibyte) |
261 | { | |
262 | MAKE_CHAR_UNIBYTE (c); | |
263 | FETCH_BYTE (start_byte) = c; | |
264 | } | |
265 | else if (ASCII_CHAR_P (c2) && ASCII_CHAR_P (c)) | |
266 | FETCH_BYTE (start_byte) = c; | |
08588bfa | 267 | else |
a04538da | 268 | { |
08588bfa | 269 | int tolen = CHAR_BYTES (c); |
2422e50a | 270 | int j; |
66da2880 | 271 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
a04538da | 272 | |
2422e50a | 273 | CHAR_STRING (c, str); |
08588bfa KH |
274 | if (len == tolen) |
275 | { | |
276 | /* Length is unchanged. */ | |
277 | for (j = 0; j < len; ++j) | |
278 | FETCH_BYTE (start_byte + j) = str[j]; | |
279 | } | |
280 | else | |
281 | { | |
282 | /* Replace one character with the other, | |
283 | keeping text properties the same. */ | |
284 | replace_range_2 (start, start_byte, | |
285 | start + 1, start_byte + len, | |
286 | str, 1, tolen, | |
287 | 0); | |
288 | len = tolen; | |
289 | } | |
a04538da | 290 | } |
a04538da | 291 | } |
2422e50a KH |
292 | start++; |
293 | start_byte += len; | |
dcfdbac7 JB |
294 | } |
295 | ||
8f924df7 KH |
296 | if (PT != opoint) |
297 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
298 | ||
7927d8e3 | 299 | if (first >= 0) |
66da2880 | 300 | { |
7927d8e3 SM |
301 | signal_after_change (first, last + 1 - first, last + 1 - first); |
302 | update_compositions (first, last + 1, CHECK_ALL); | |
66da2880 | 303 | } |
dcfdbac7 JB |
304 | } |
305 | ||
306 | DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r", | |
fdb82f93 PJ |
307 | doc: /* Convert the region to upper case. In programs, wants two arguments. |
308 | These arguments specify the starting and ending character numbers of | |
309 | the region to operate on. When used as a command, the text between | |
310 | point and the mark is operated on. | |
311 | See also `capitalize-region'. */) | |
312 | (beg, end) | |
8c22d56c | 313 | Lisp_Object beg, end; |
dcfdbac7 | 314 | { |
8c22d56c | 315 | casify_region (CASE_UP, beg, end); |
dcfdbac7 JB |
316 | return Qnil; |
317 | } | |
318 | ||
319 | DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r", | |
fdb82f93 PJ |
320 | doc: /* Convert the region to lower case. In programs, wants two arguments. |
321 | These arguments specify the starting and ending character numbers of | |
322 | the region to operate on. When used as a command, the text between | |
323 | point and the mark is operated on. */) | |
324 | (beg, end) | |
8c22d56c | 325 | Lisp_Object beg, end; |
dcfdbac7 | 326 | { |
8c22d56c | 327 | casify_region (CASE_DOWN, beg, end); |
dcfdbac7 JB |
328 | return Qnil; |
329 | } | |
330 | ||
331 | DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r", | |
fdb82f93 PJ |
332 | doc: /* Convert the region to capitalized form. |
333 | Capitalized form means each word's first character is upper case | |
334 | and the rest of it is lower case. | |
335 | In programs, give two arguments, the starting and ending | |
336 | character positions to operate on. */) | |
337 | (beg, end) | |
8c22d56c | 338 | Lisp_Object beg, end; |
dcfdbac7 | 339 | { |
8c22d56c | 340 | casify_region (CASE_CAPITALIZE, beg, end); |
dcfdbac7 JB |
341 | return Qnil; |
342 | } | |
343 | ||
2371fad4 KH |
344 | /* Like Fcapitalize_region but change only the initials. */ |
345 | ||
8cef1f78 RS |
346 | DEFUN ("upcase-initials-region", Fupcase_initials_region, |
347 | Supcase_initials_region, 2, 2, "r", | |
fdb82f93 PJ |
348 | doc: /* Upcase the initial of each word in the region. |
349 | Subsequent letters of each word are not changed. | |
350 | In programs, give two arguments, the starting and ending | |
351 | character positions to operate on. */) | |
352 | (beg, end) | |
8c22d56c | 353 | Lisp_Object beg, end; |
8cef1f78 | 354 | { |
8c22d56c | 355 | casify_region (CASE_CAPITALIZE_UP, beg, end); |
8cef1f78 RS |
356 | return Qnil; |
357 | } | |
dcfdbac7 | 358 | \f |
438eba3c | 359 | static Lisp_Object |
34628a90 | 360 | operate_on_word (arg, newpoint) |
dcfdbac7 | 361 | Lisp_Object arg; |
438eba3c | 362 | EMACS_INT *newpoint; |
dcfdbac7 | 363 | { |
39fb55ff | 364 | Lisp_Object val; |
34628a90 | 365 | int farend; |
2371fad4 | 366 | int iarg; |
dcfdbac7 | 367 | |
b7826503 | 368 | CHECK_NUMBER (arg); |
2371fad4 | 369 | iarg = XINT (arg); |
6ec8bbd2 | 370 | farend = scan_words (PT, iarg); |
dcfdbac7 | 371 | if (!farend) |
2371fad4 | 372 | farend = iarg > 0 ? ZV : BEGV; |
dcfdbac7 | 373 | |
6ec8bbd2 | 374 | *newpoint = PT > farend ? PT : farend; |
18e23fd0 | 375 | XSETFASTINT (val, farend); |
dcfdbac7 JB |
376 | |
377 | return val; | |
378 | } | |
379 | ||
380 | DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p", | |
fdb82f93 PJ |
381 | doc: /* Convert following word (or ARG words) to upper case, moving over. |
382 | With negative argument, convert previous words but do not move. | |
383 | See also `capitalize-word'. */) | |
384 | (arg) | |
dcfdbac7 JB |
385 | Lisp_Object arg; |
386 | { | |
34628a90 | 387 | Lisp_Object beg, end; |
438eba3c | 388 | EMACS_INT newpoint; |
6ec8bbd2 | 389 | XSETFASTINT (beg, PT); |
34628a90 RS |
390 | end = operate_on_word (arg, &newpoint); |
391 | casify_region (CASE_UP, beg, end); | |
392 | SET_PT (newpoint); | |
dcfdbac7 JB |
393 | return Qnil; |
394 | } | |
395 | ||
396 | DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p", | |
fdb82f93 PJ |
397 | doc: /* Convert following word (or ARG words) to lower case, moving over. |
398 | With negative argument, convert previous words but do not move. */) | |
399 | (arg) | |
dcfdbac7 JB |
400 | Lisp_Object arg; |
401 | { | |
34628a90 | 402 | Lisp_Object beg, end; |
438eba3c | 403 | EMACS_INT newpoint; |
6ec8bbd2 | 404 | XSETFASTINT (beg, PT); |
34628a90 RS |
405 | end = operate_on_word (arg, &newpoint); |
406 | casify_region (CASE_DOWN, beg, end); | |
407 | SET_PT (newpoint); | |
dcfdbac7 JB |
408 | return Qnil; |
409 | } | |
410 | ||
411 | DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p", | |
fdb82f93 PJ |
412 | doc: /* Capitalize the following word (or ARG words), moving over. |
413 | This gives the word(s) a first character in upper case | |
414 | and the rest lower case. | |
415 | With negative argument, capitalize previous words but do not move. */) | |
416 | (arg) | |
dcfdbac7 JB |
417 | Lisp_Object arg; |
418 | { | |
34628a90 | 419 | Lisp_Object beg, end; |
438eba3c | 420 | EMACS_INT newpoint; |
6ec8bbd2 | 421 | XSETFASTINT (beg, PT); |
34628a90 RS |
422 | end = operate_on_word (arg, &newpoint); |
423 | casify_region (CASE_CAPITALIZE, beg, end); | |
424 | SET_PT (newpoint); | |
dcfdbac7 JB |
425 | return Qnil; |
426 | } | |
427 | \f | |
dfcf069d | 428 | void |
dcfdbac7 JB |
429 | syms_of_casefiddle () |
430 | { | |
a04538da KH |
431 | Qidentity = intern ("identity"); |
432 | staticpro (&Qidentity); | |
dcfdbac7 JB |
433 | defsubr (&Supcase); |
434 | defsubr (&Sdowncase); | |
435 | defsubr (&Scapitalize); | |
8cef1f78 | 436 | defsubr (&Supcase_initials); |
dcfdbac7 JB |
437 | defsubr (&Supcase_region); |
438 | defsubr (&Sdowncase_region); | |
439 | defsubr (&Scapitalize_region); | |
8cef1f78 | 440 | defsubr (&Supcase_initials_region); |
dcfdbac7 JB |
441 | defsubr (&Supcase_word); |
442 | defsubr (&Sdowncase_word); | |
443 | defsubr (&Scapitalize_word); | |
444 | } | |
445 | ||
dfcf069d | 446 | void |
dcfdbac7 JB |
447 | keys_of_casefiddle () |
448 | { | |
449 | initial_define_key (control_x_map, Ctl('U'), "upcase-region"); | |
d427b66a | 450 | Fput (intern ("upcase-region"), Qdisabled, Qt); |
dcfdbac7 | 451 | initial_define_key (control_x_map, Ctl('L'), "downcase-region"); |
d427b66a JB |
452 | Fput (intern ("downcase-region"), Qdisabled, Qt); |
453 | ||
dcfdbac7 JB |
454 | initial_define_key (meta_map, 'u', "upcase-word"); |
455 | initial_define_key (meta_map, 'l', "downcase-word"); | |
456 | initial_define_key (meta_map, 'c', "capitalize-word"); | |
457 | } | |
6b61353c KH |
458 | |
459 | /* arch-tag: 60a73c66-5489-47e7-a81f-cead4057c526 | |
460 | (do not change this comment) */ |