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 {
826
+ − 52 Lisp_Object syntax_table = buf->mirror_syntax_table;
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+ − 53 Ibyte *storage =
+ − 54 alloca_array (Ibyte, XSTRING_LENGTH (string_or_char) *
+ − 55 MAX_ICHAR_LEN);
+ − 56 Ibyte *newp = storage;
+ − 57 Ibyte *oldp = XSTRING_DATA (string_or_char);
+ − 58 Ibyte *endp = oldp + XSTRING_LENGTH (string_or_char);
428
+ − 59 int wordp = 0, wordp_prev;
+ − 60
771
+ − 61 while (oldp < endp)
428
+ − 62 {
867
+ − 63 Ichar c = itext_ichar (oldp);
428
+ − 64 switch (flag)
+ − 65 {
+ − 66 case CASE_UP:
+ − 67 c = UPCASE (buf, c);
+ − 68 break;
+ − 69 case CASE_DOWN:
+ − 70 c = DOWNCASE (buf, c);
+ − 71 break;
+ − 72 case CASE_CAPITALIZE:
+ − 73 case CASE_CAPITALIZE_UP:
+ − 74 wordp_prev = wordp;
+ − 75 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 76 if (!wordp) break;
+ − 77 if (wordp_prev)
+ − 78 {
+ − 79 if (flag == CASE_CAPITALIZE)
+ − 80 c = DOWNCASE (buf, c);
+ − 81 }
+ − 82 else
+ − 83 c = UPCASE (buf, c);
+ − 84 break;
+ − 85 }
+ − 86
867
+ − 87 newp += set_itext_ichar (newp, c);
+ − 88 INC_IBYTEPTR (oldp);
428
+ − 89 }
+ − 90
+ − 91 return make_string (storage, newp - storage);
+ − 92 }
+ − 93
444
+ − 94 string_or_char = wrong_type_argument (Qchar_or_string_p, string_or_char);
428
+ − 95 goto retry;
+ − 96 }
+ − 97
+ − 98 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
444
+ − 99 Convert STRING-OR-CHAR to upper case and return that.
+ − 100 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 101 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 102 See also `capitalize', `downcase' and `upcase-initials'.
+ − 103 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 104 and defaults to the current buffer.
+ − 105 */
444
+ − 106 (string_or_char, buffer))
428
+ − 107 {
444
+ − 108 return casify_object (CASE_UP, string_or_char, buffer);
428
+ − 109 }
+ − 110
+ − 111 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
444
+ − 112 Convert STRING-OR-CHAR to lower case and return that.
+ − 113 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 114 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 115 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 116 and defaults to the current buffer.
+ − 117 */
444
+ − 118 (string_or_char, buffer))
428
+ − 119 {
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+ − 120 return casify_object (CASE_DOWN, string_or_char, buffer);
428
+ − 121 }
+ − 122
+ − 123 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
444
+ − 124 Convert STRING-OR-CHAR to capitalized form and return that.
428
+ − 125 This means that each word's first character is upper case
+ − 126 and the rest is lower case.
444
+ − 127 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 128 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 129 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 130 and defaults to the current buffer.
+ − 131 */
444
+ − 132 (string_or_char, buffer))
428
+ − 133 {
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+ − 134 return casify_object (CASE_CAPITALIZE, string_or_char, buffer);
428
+ − 135 }
+ − 136
+ − 137 /* Like Fcapitalize but change only the initial characters. */
+ − 138
+ − 139 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
444
+ − 140 Convert the initial of each word in STRING-OR-CHAR to upper case.
428
+ − 141 Do not change the other letters of each word.
444
+ − 142 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 143 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 144 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 145 and defaults to the current buffer.
+ − 146 */
444
+ − 147 (string_or_char, buffer))
428
+ − 148 {
444
+ − 149 return casify_object (CASE_CAPITALIZE_UP, string_or_char, buffer);
428
+ − 150 }
+ − 151
+ − 152 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
444
+ − 153 START and END specify range of buffer to operate on. */
428
+ − 154
+ − 155 static void
444
+ − 156 casify_region_internal (enum case_action flag, Lisp_Object start,
+ − 157 Lisp_Object end, struct buffer *buf)
428
+ − 158 {
+ − 159 /* This function can GC */
665
+ − 160 Charbpos pos, s, e;
826
+ − 161 Lisp_Object syntax_table = buf->mirror_syntax_table;
428
+ − 162 int mccount;
+ − 163 int wordp = 0, wordp_prev;
+ − 164
444
+ − 165 if (EQ (start, end))
428
+ − 166 /* Not modifying because nothing marked */
+ − 167 return;
+ − 168
444
+ − 169 get_buffer_range_char (buf, start, end, &s, &e, 0);
+ − 170
+ − 171 mccount = begin_multiple_change (buf, s, e);
+ − 172 record_change (buf, s, e - s);
428
+ − 173
444
+ − 174 for (pos = s; pos < e; pos++)
428
+ − 175 {
867
+ − 176 Ichar oldc = BUF_FETCH_CHAR (buf, pos);
+ − 177 Ichar c = oldc;
428
+ − 178
+ − 179 switch (flag)
+ − 180 {
+ − 181 case CASE_UP:
+ − 182 c = UPCASE (buf, oldc);
+ − 183 break;
+ − 184 case CASE_DOWN:
+ − 185 c = DOWNCASE (buf, oldc);
+ − 186 break;
+ − 187 case CASE_CAPITALIZE:
+ − 188 case CASE_CAPITALIZE_UP:
+ − 189 /* !!#### need to revalidate the start and end pointers in case
+ − 190 the buffer was changed */
+ − 191 wordp_prev = wordp;
+ − 192 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 193 if (!wordp) continue;
+ − 194 if (wordp_prev)
+ − 195 {
+ − 196 if (flag == CASE_CAPITALIZE)
+ − 197 c = DOWNCASE (buf, c);
+ − 198 }
+ − 199 else
+ − 200 c = UPCASE (buf, c);
+ − 201 break;
+ − 202 }
+ − 203
+ − 204 if (oldc == c) continue;
444
+ − 205 buffer_replace_char (buf, pos, c, 1, (pos == s));
428
+ − 206 BUF_MODIFF (buf)++;
+ − 207 }
+ − 208
+ − 209 end_multiple_change (buf, mccount);
+ − 210 }
+ − 211
+ − 212 static Lisp_Object
444
+ − 213 casify_region (enum case_action flag, Lisp_Object start, Lisp_Object end,
428
+ − 214 Lisp_Object buffer)
+ − 215 {
444
+ − 216 casify_region_internal (flag, start, end, decode_buffer (buffer, 1));
428
+ − 217 return Qnil;
+ − 218 }
+ − 219
+ − 220 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
+ − 221 Convert the region to upper case. In programs, wants two arguments.
+ − 222 These arguments specify the starting and ending character numbers of
+ − 223 the region to operate on. When used as a command, the text between
+ − 224 point and the mark is operated on.
+ − 225 See also `capitalize-region'.
+ − 226 Optional third arg BUFFER defaults to the current buffer.
+ − 227 */
444
+ − 228 (start, end, buffer))
428
+ − 229 {
+ − 230 /* This function can GC */
444
+ − 231 return casify_region (CASE_UP, start, end, buffer);
428
+ − 232 }
+ − 233
+ − 234 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
+ − 235 Convert the region to lower case. In programs, wants two arguments.
+ − 236 These arguments specify the starting and ending character numbers of
+ − 237 the region to operate on. When used as a command, the text between
+ − 238 point and the mark is operated on.
+ − 239 Optional third arg BUFFER defaults to the current buffer.
+ − 240 */
444
+ − 241 (start, end, buffer))
428
+ − 242 {
+ − 243 /* This function can GC */
444
+ − 244 return casify_region (CASE_DOWN, start, end, buffer);
428
+ − 245 }
+ − 246
+ − 247 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
+ − 248 Convert the region to capitalized form.
+ − 249 Capitalized form means each word's first character is upper case
+ − 250 and the rest of it is lower case.
+ − 251 In programs, give two arguments, the starting and ending
+ − 252 character positions to operate on.
+ − 253 Optional third arg BUFFER defaults to the current buffer.
+ − 254 */
444
+ − 255 (start, end, buffer))
428
+ − 256 {
+ − 257 /* This function can GC */
444
+ − 258 return casify_region (CASE_CAPITALIZE, start, end, buffer);
428
+ − 259 }
+ − 260
+ − 261 /* Like Fcapitalize_region but change only the initials. */
+ − 262
+ − 263 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
+ − 264 Upcase the initial of each word in the region.
+ − 265 Subsequent letters of each word are not changed.
+ − 266 In programs, give two arguments, the starting and ending
+ − 267 character positions to operate on.
+ − 268 Optional third arg BUFFER defaults to the current buffer.
+ − 269 */
444
+ − 270 (start, end, buffer))
428
+ − 271 {
444
+ − 272 return casify_region (CASE_CAPITALIZE_UP, start, end, buffer);
428
+ − 273 }
+ − 274
+ − 275
+ − 276 static Lisp_Object
+ − 277 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
+ − 278 {
665
+ − 279 Charbpos farend;
428
+ − 280 struct buffer *buf = decode_buffer (buffer, 1);
+ − 281
+ − 282 CHECK_INT (arg);
+ − 283
+ − 284 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
+ − 285 if (!farend)
+ − 286 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
+ − 287
+ − 288 casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
+ − 289 BUF_SET_PT (buf, max (BUF_PT (buf), farend));
+ − 290 return Qnil;
+ − 291 }
+ − 292
+ − 293 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
444
+ − 294 Convert following word (or COUNT words) to upper case, moving over.
428
+ − 295 With negative argument, convert previous words but do not move.
+ − 296 See also `capitalize-word'.
+ − 297 Optional second arg BUFFER defaults to the current buffer.
+ − 298 */
444
+ − 299 (count, buffer))
428
+ − 300 {
+ − 301 /* This function can GC */
444
+ − 302 return casify_word (CASE_UP, count, buffer);
428
+ − 303 }
+ − 304
+ − 305 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
444
+ − 306 Convert following word (or COUNT words) to lower case, moving over.
428
+ − 307 With negative argument, convert previous words but do not move.
+ − 308 Optional second arg BUFFER defaults to the current buffer.
+ − 309 */
444
+ − 310 (count, buffer))
428
+ − 311 {
+ − 312 /* This function can GC */
444
+ − 313 return casify_word (CASE_DOWN, count, buffer);
428
+ − 314 }
+ − 315
+ − 316 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
444
+ − 317 Capitalize the following word (or COUNT words), moving over.
428
+ − 318 This gives the word(s) a first character in upper case
+ − 319 and the rest lower case.
+ − 320 With negative argument, capitalize previous words but do not move.
+ − 321 Optional second arg BUFFER defaults to the current buffer.
+ − 322 */
444
+ − 323 (count, buffer))
428
+ − 324 {
+ − 325 /* This function can GC */
444
+ − 326 return casify_word (CASE_CAPITALIZE, count, buffer);
428
+ − 327 }
+ − 328
+ − 329
+ − 330 void
+ − 331 syms_of_casefiddle (void)
+ − 332 {
+ − 333 DEFSUBR (Fupcase);
+ − 334 DEFSUBR (Fdowncase);
+ − 335 DEFSUBR (Fcapitalize);
+ − 336 DEFSUBR (Fupcase_initials);
+ − 337 DEFSUBR (Fupcase_region);
+ − 338 DEFSUBR (Fdowncase_region);
+ − 339 DEFSUBR (Fcapitalize_region);
+ − 340 DEFSUBR (Fupcase_initials_region);
+ − 341 DEFSUBR (Fupcase_word);
+ − 342 DEFSUBR (Fdowncase_word);
+ − 343 DEFSUBR (Fcapitalize_word);
+ − 344 }
