428
+ − 1 /* XEmacs case conversion functions.
+ − 2 Copyright (C) 1985, 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
826
+ − 3 Copyright (C) 2002 Ben Wing.
428
+ − 4
+ − 5 This file is part of XEmacs.
+ − 6
+ − 7 XEmacs is free software; you can redistribute it and/or modify it
+ − 8 under the terms of the GNU General Public License as published by the
+ − 9 Free Software Foundation; either version 2, or (at your option) any
+ − 10 later version.
+ − 11
+ − 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 15 for more details.
+ − 16
+ − 17 You should have received a copy of the GNU General Public License
+ − 18 along with XEmacs; see the file COPYING. If not, write to
+ − 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 20 Boston, MA 02111-1307, USA. */
+ − 21
+ − 22 /* Synched up with: FSF 19.34, but substantially rewritten by Martin. */
+ − 23
+ − 24 #include <config.h>
+ − 25 #include "lisp.h"
+ − 26
+ − 27 #include "buffer.h"
+ − 28 #include "insdel.h"
+ − 29 #include "syntax.h"
+ − 30
+ − 31 enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
+ − 32
+ − 33 static Lisp_Object
444
+ − 34 casify_object (enum case_action flag, Lisp_Object string_or_char,
+ − 35 Lisp_Object buffer)
428
+ − 36 {
+ − 37 struct buffer *buf = decode_buffer (buffer, 0);
+ − 38
+ − 39 retry:
+ − 40
444
+ − 41 if (CHAR_OR_CHAR_INTP (string_or_char))
428
+ − 42 {
867
+ − 43 Ichar c;
444
+ − 44 CHECK_CHAR_COERCE_INT (string_or_char);
+ − 45 c = XCHAR (string_or_char);
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+ − 46 c = (flag == CASE_DOWN) ? DOWNCASE (buf, c) : UPCASE (buf, c);
+ − 47 return make_char (c);
+ − 48 }
+ − 49
444
+ − 50 if (STRINGP (string_or_char))
428
+ − 51 {
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+ − 52 Lisp_Object syntax_table = buf->mirror_syntax_table;
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+ − 53 Ibyte *storage =
2367
+ − 54 alloca_ibytes (XSTRING_LENGTH (string_or_char) * MAX_ICHAR_LEN);
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+ − 55 Ibyte *newp = storage;
+ − 56 Ibyte *oldp = XSTRING_DATA (string_or_char);
+ − 57 Ibyte *endp = oldp + XSTRING_LENGTH (string_or_char);
428
+ − 58 int wordp = 0, wordp_prev;
+ − 59
771
+ − 60 while (oldp < endp)
428
+ − 61 {
867
+ − 62 Ichar c = itext_ichar (oldp);
428
+ − 63 switch (flag)
+ − 64 {
+ − 65 case CASE_UP:
+ − 66 c = UPCASE (buf, c);
+ − 67 break;
+ − 68 case CASE_DOWN:
+ − 69 c = DOWNCASE (buf, c);
+ − 70 break;
+ − 71 case CASE_CAPITALIZE:
+ − 72 case CASE_CAPITALIZE_UP:
+ − 73 wordp_prev = wordp;
+ − 74 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 75 if (!wordp) break;
+ − 76 if (wordp_prev)
+ − 77 {
+ − 78 if (flag == CASE_CAPITALIZE)
+ − 79 c = DOWNCASE (buf, c);
+ − 80 }
+ − 81 else
+ − 82 c = UPCASE (buf, c);
+ − 83 break;
+ − 84 }
+ − 85
867
+ − 86 newp += set_itext_ichar (newp, c);
+ − 87 INC_IBYTEPTR (oldp);
428
+ − 88 }
+ − 89
+ − 90 return make_string (storage, newp - storage);
+ − 91 }
+ − 92
444
+ − 93 string_or_char = wrong_type_argument (Qchar_or_string_p, string_or_char);
428
+ − 94 goto retry;
+ − 95 }
+ − 96
+ − 97 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
444
+ − 98 Convert STRING-OR-CHAR to upper case and return that.
+ − 99 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 100 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 101 See also `capitalize', `downcase' and `upcase-initials'.
+ − 102 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 103 and defaults to the current buffer.
+ − 104 */
444
+ − 105 (string_or_char, buffer))
428
+ − 106 {
444
+ − 107 return casify_object (CASE_UP, string_or_char, buffer);
428
+ − 108 }
+ − 109
+ − 110 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
444
+ − 111 Convert STRING-OR-CHAR to lower case and return that.
+ − 112 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 113 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 114 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 115 and defaults to the current buffer.
+ − 116 */
444
+ − 117 (string_or_char, buffer))
428
+ − 118 {
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+ − 119 return casify_object (CASE_DOWN, string_or_char, buffer);
428
+ − 120 }
+ − 121
+ − 122 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
444
+ − 123 Convert STRING-OR-CHAR to capitalized form and return that.
428
+ − 124 This means that each word's first character is upper case
+ − 125 and the rest is lower case.
444
+ − 126 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 127 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 128 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 129 and defaults to the current buffer.
+ − 130 */
444
+ − 131 (string_or_char, buffer))
428
+ − 132 {
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+ − 133 return casify_object (CASE_CAPITALIZE, string_or_char, buffer);
428
+ − 134 }
+ − 135
+ − 136 /* Like Fcapitalize but change only the initial characters. */
+ − 137
+ − 138 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
444
+ − 139 Convert the initial of each word in STRING-OR-CHAR to upper case.
428
+ − 140 Do not change the other letters of each word.
444
+ − 141 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 142 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 143 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 144 and defaults to the current buffer.
+ − 145 */
444
+ − 146 (string_or_char, buffer))
428
+ − 147 {
444
+ − 148 return casify_object (CASE_CAPITALIZE_UP, string_or_char, buffer);
428
+ − 149 }
+ − 150
+ − 151 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
444
+ − 152 START and END specify range of buffer to operate on. */
428
+ − 153
+ − 154 static void
444
+ − 155 casify_region_internal (enum case_action flag, Lisp_Object start,
+ − 156 Lisp_Object end, struct buffer *buf)
428
+ − 157 {
+ − 158 /* This function can GC */
665
+ − 159 Charbpos pos, s, e;
826
+ − 160 Lisp_Object syntax_table = buf->mirror_syntax_table;
428
+ − 161 int mccount;
+ − 162 int wordp = 0, wordp_prev;
+ − 163
444
+ − 164 if (EQ (start, end))
428
+ − 165 /* Not modifying because nothing marked */
+ − 166 return;
+ − 167
444
+ − 168 get_buffer_range_char (buf, start, end, &s, &e, 0);
+ − 169
+ − 170 mccount = begin_multiple_change (buf, s, e);
+ − 171 record_change (buf, s, e - s);
428
+ − 172
444
+ − 173 for (pos = s; pos < e; pos++)
428
+ − 174 {
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+ − 175 Ichar oldc = BUF_FETCH_CHAR (buf, pos);
+ − 176 Ichar c = oldc;
428
+ − 177
+ − 178 switch (flag)
+ − 179 {
+ − 180 case CASE_UP:
+ − 181 c = UPCASE (buf, oldc);
+ − 182 break;
+ − 183 case CASE_DOWN:
+ − 184 c = DOWNCASE (buf, oldc);
+ − 185 break;
+ − 186 case CASE_CAPITALIZE:
+ − 187 case CASE_CAPITALIZE_UP:
+ − 188 /* !!#### need to revalidate the start and end pointers in case
+ − 189 the buffer was changed */
+ − 190 wordp_prev = wordp;
+ − 191 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 192 if (!wordp) continue;
+ − 193 if (wordp_prev)
+ − 194 {
+ − 195 if (flag == CASE_CAPITALIZE)
+ − 196 c = DOWNCASE (buf, c);
+ − 197 }
+ − 198 else
+ − 199 c = UPCASE (buf, c);
+ − 200 break;
+ − 201 }
+ − 202
+ − 203 if (oldc == c) continue;
444
+ − 204 buffer_replace_char (buf, pos, c, 1, (pos == s));
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+ − 205 BUF_MODIFF (buf)++;
+ − 206 }
+ − 207
+ − 208 end_multiple_change (buf, mccount);
+ − 209 }
+ − 210
+ − 211 static Lisp_Object
444
+ − 212 casify_region (enum case_action flag, Lisp_Object start, Lisp_Object end,
428
+ − 213 Lisp_Object buffer)
+ − 214 {
444
+ − 215 casify_region_internal (flag, start, end, decode_buffer (buffer, 1));
428
+ − 216 return Qnil;
+ − 217 }
+ − 218
+ − 219 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
+ − 220 Convert the region to upper case. In programs, wants two arguments.
+ − 221 These arguments specify the starting and ending character numbers of
+ − 222 the region to operate on. When used as a command, the text between
+ − 223 point and the mark is operated on.
+ − 224 See also `capitalize-region'.
+ − 225 Optional third arg BUFFER defaults to the current buffer.
+ − 226 */
444
+ − 227 (start, end, buffer))
428
+ − 228 {
+ − 229 /* This function can GC */
444
+ − 230 return casify_region (CASE_UP, start, end, buffer);
428
+ − 231 }
+ − 232
+ − 233 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
+ − 234 Convert the region to lower case. In programs, wants two arguments.
+ − 235 These arguments specify the starting and ending character numbers of
+ − 236 the region to operate on. When used as a command, the text between
+ − 237 point and the mark is operated on.
+ − 238 Optional third arg BUFFER defaults to the current buffer.
+ − 239 */
444
+ − 240 (start, end, buffer))
428
+ − 241 {
+ − 242 /* This function can GC */
444
+ − 243 return casify_region (CASE_DOWN, start, end, buffer);
428
+ − 244 }
+ − 245
+ − 246 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
+ − 247 Convert the region to capitalized form.
+ − 248 Capitalized form means each word's first character is upper case
+ − 249 and the rest of it is lower case.
+ − 250 In programs, give two arguments, the starting and ending
+ − 251 character positions to operate on.
+ − 252 Optional third arg BUFFER defaults to the current buffer.
+ − 253 */
444
+ − 254 (start, end, buffer))
428
+ − 255 {
+ − 256 /* This function can GC */
444
+ − 257 return casify_region (CASE_CAPITALIZE, start, end, buffer);
428
+ − 258 }
+ − 259
+ − 260 /* Like Fcapitalize_region but change only the initials. */
+ − 261
+ − 262 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
+ − 263 Upcase the initial of each word in the region.
+ − 264 Subsequent letters of each word are not changed.
+ − 265 In programs, give two arguments, the starting and ending
+ − 266 character positions to operate on.
+ − 267 Optional third arg BUFFER defaults to the current buffer.
+ − 268 */
444
+ − 269 (start, end, buffer))
428
+ − 270 {
444
+ − 271 return casify_region (CASE_CAPITALIZE_UP, start, end, buffer);
428
+ − 272 }
+ − 273
+ − 274
+ − 275 static Lisp_Object
+ − 276 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
+ − 277 {
665
+ − 278 Charbpos farend;
428
+ − 279 struct buffer *buf = decode_buffer (buffer, 1);
+ − 280
+ − 281 CHECK_INT (arg);
+ − 282
+ − 283 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
+ − 284 if (!farend)
+ − 285 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
+ − 286
+ − 287 casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
+ − 288 BUF_SET_PT (buf, max (BUF_PT (buf), farend));
+ − 289 return Qnil;
+ − 290 }
+ − 291
+ − 292 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
444
+ − 293 Convert following word (or COUNT words) to upper case, moving over.
428
+ − 294 With negative argument, convert previous words but do not move.
+ − 295 See also `capitalize-word'.
+ − 296 Optional second arg BUFFER defaults to the current buffer.
+ − 297 */
444
+ − 298 (count, buffer))
428
+ − 299 {
+ − 300 /* This function can GC */
444
+ − 301 return casify_word (CASE_UP, count, buffer);
428
+ − 302 }
+ − 303
+ − 304 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
444
+ − 305 Convert following word (or COUNT words) to lower case, moving over.
428
+ − 306 With negative argument, convert previous words but do not move.
+ − 307 Optional second arg BUFFER defaults to the current buffer.
+ − 308 */
444
+ − 309 (count, buffer))
428
+ − 310 {
+ − 311 /* This function can GC */
444
+ − 312 return casify_word (CASE_DOWN, count, buffer);
428
+ − 313 }
+ − 314
+ − 315 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
444
+ − 316 Capitalize the following word (or COUNT words), moving over.
428
+ − 317 This gives the word(s) a first character in upper case
+ − 318 and the rest lower case.
+ − 319 With negative argument, capitalize previous words but do not move.
+ − 320 Optional second arg BUFFER defaults to the current buffer.
+ − 321 */
444
+ − 322 (count, buffer))
428
+ − 323 {
+ − 324 /* This function can GC */
444
+ − 325 return casify_word (CASE_CAPITALIZE, count, buffer);
428
+ − 326 }
+ − 327
+ − 328
+ − 329 void
+ − 330 syms_of_casefiddle (void)
+ − 331 {
+ − 332 DEFSUBR (Fupcase);
+ − 333 DEFSUBR (Fdowncase);
+ − 334 DEFSUBR (Fcapitalize);
+ − 335 DEFSUBR (Fupcase_initials);
+ − 336 DEFSUBR (Fupcase_region);
+ − 337 DEFSUBR (Fdowncase_region);
+ − 338 DEFSUBR (Fcapitalize_region);
+ − 339 DEFSUBR (Fupcase_initials_region);
+ − 340 DEFSUBR (Fupcase_word);
+ − 341 DEFSUBR (Fdowncase_word);
+ − 342 DEFSUBR (Fcapitalize_word);
+ − 343 }