428
+ − 1 /* XEmacs case conversion functions.
+ − 2 Copyright (C) 1985, 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
+ − 3
+ − 4 This file is part of XEmacs.
+ − 5
+ − 6 XEmacs is free software; you can redistribute it and/or modify it
+ − 7 under the terms of the GNU General Public License as published by the
+ − 8 Free Software Foundation; either version 2, or (at your option) any
+ − 9 later version.
+ − 10
+ − 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 14 for more details.
+ − 15
+ − 16 You should have received a copy of the GNU General Public License
+ − 17 along with XEmacs; see the file COPYING. If not, write to
+ − 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 19 Boston, MA 02111-1307, USA. */
+ − 20
+ − 21 /* Synched up with: FSF 19.34, but substantially rewritten by Martin. */
+ − 22
+ − 23 #include <config.h>
+ − 24 #include "lisp.h"
+ − 25
+ − 26 #include "buffer.h"
+ − 27 #include "insdel.h"
+ − 28 #include "syntax.h"
+ − 29
+ − 30 enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
+ − 31
+ − 32 static Lisp_Object
444
+ − 33 casify_object (enum case_action flag, Lisp_Object string_or_char,
+ − 34 Lisp_Object buffer)
428
+ − 35 {
+ − 36 struct buffer *buf = decode_buffer (buffer, 0);
+ − 37
+ − 38 retry:
+ − 39
444
+ − 40 if (CHAR_OR_CHAR_INTP (string_or_char))
428
+ − 41 {
+ − 42 Emchar c;
444
+ − 43 CHECK_CHAR_COERCE_INT (string_or_char);
+ − 44 c = XCHAR (string_or_char);
428
+ − 45 c = (flag == CASE_DOWN) ? DOWNCASE (buf, c) : UPCASE (buf, c);
+ − 46 return make_char (c);
+ − 47 }
+ − 48
444
+ − 49 if (STRINGP (string_or_char))
428
+ − 50 {
440
+ − 51 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
428
+ − 52 Bufbyte *storage =
444
+ − 53 alloca_array (Bufbyte, XSTRING_LENGTH (string_or_char) * MAX_EMCHAR_LEN);
428
+ − 54 Bufbyte *newp = storage;
444
+ − 55 Bufbyte *oldp = XSTRING_DATA (string_or_char);
428
+ − 56 int wordp = 0, wordp_prev;
+ − 57
+ − 58 while (*oldp)
+ − 59 {
+ − 60 Emchar c = charptr_emchar (oldp);
+ − 61 switch (flag)
+ − 62 {
+ − 63 case CASE_UP:
+ − 64 c = UPCASE (buf, c);
+ − 65 break;
+ − 66 case CASE_DOWN:
+ − 67 c = DOWNCASE (buf, c);
+ − 68 break;
+ − 69 case CASE_CAPITALIZE:
+ − 70 case CASE_CAPITALIZE_UP:
+ − 71 wordp_prev = wordp;
+ − 72 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 73 if (!wordp) break;
+ − 74 if (wordp_prev)
+ − 75 {
+ − 76 if (flag == CASE_CAPITALIZE)
+ − 77 c = DOWNCASE (buf, c);
+ − 78 }
+ − 79 else
+ − 80 c = UPCASE (buf, c);
+ − 81 break;
+ − 82 }
+ − 83
+ − 84 newp += set_charptr_emchar (newp, c);
+ − 85 INC_CHARPTR (oldp);
+ − 86 }
+ − 87
+ − 88 return make_string (storage, newp - storage);
+ − 89 }
+ − 90
444
+ − 91 string_or_char = wrong_type_argument (Qchar_or_string_p, string_or_char);
428
+ − 92 goto retry;
+ − 93 }
+ − 94
+ − 95 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
444
+ − 96 Convert STRING-OR-CHAR to upper case and return that.
+ − 97 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 98 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 99 See also `capitalize', `downcase' and `upcase-initials'.
+ − 100 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 101 and defaults to the current buffer.
+ − 102 */
444
+ − 103 (string_or_char, buffer))
428
+ − 104 {
444
+ − 105 return casify_object (CASE_UP, string_or_char, buffer);
428
+ − 106 }
+ − 107
+ − 108 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
444
+ − 109 Convert STRING-OR-CHAR to lower case and return that.
+ − 110 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 111 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 112 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 113 and defaults to the current buffer.
+ − 114 */
444
+ − 115 (string_or_char, buffer))
428
+ − 116 {
444
+ − 117 return casify_object (CASE_DOWN, string_or_char, buffer);
428
+ − 118 }
+ − 119
+ − 120 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
444
+ − 121 Convert STRING-OR-CHAR to capitalized form and return that.
428
+ − 122 This means that each word's first character is upper case
+ − 123 and the rest is lower case.
444
+ − 124 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 125 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 126 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 127 and defaults to the current buffer.
+ − 128 */
444
+ − 129 (string_or_char, buffer))
428
+ − 130 {
444
+ − 131 return casify_object (CASE_CAPITALIZE, string_or_char, buffer);
428
+ − 132 }
+ − 133
+ − 134 /* Like Fcapitalize but change only the initial characters. */
+ − 135
+ − 136 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
444
+ − 137 Convert the initial of each word in STRING-OR-CHAR to upper case.
428
+ − 138 Do not change the other letters of each word.
444
+ − 139 STRING-OR-CHAR may be a character or string. The result has the same type.
+ − 140 STRING-OR-CHAR is not altered--the value is a copy.
428
+ − 141 Optional second arg BUFFER specifies which buffer's case tables to use,
+ − 142 and defaults to the current buffer.
+ − 143 */
444
+ − 144 (string_or_char, buffer))
428
+ − 145 {
444
+ − 146 return casify_object (CASE_CAPITALIZE_UP, string_or_char, buffer);
428
+ − 147 }
+ − 148
+ − 149 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
444
+ − 150 START and END specify range of buffer to operate on. */
428
+ − 151
+ − 152 static void
444
+ − 153 casify_region_internal (enum case_action flag, Lisp_Object start,
+ − 154 Lisp_Object end, struct buffer *buf)
428
+ − 155 {
+ − 156 /* This function can GC */
444
+ − 157 Bufpos pos, s, e;
440
+ − 158 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
428
+ − 159 int mccount;
+ − 160 int wordp = 0, wordp_prev;
+ − 161
444
+ − 162 if (EQ (start, end))
428
+ − 163 /* Not modifying because nothing marked */
+ − 164 return;
+ − 165
444
+ − 166 get_buffer_range_char (buf, start, end, &s, &e, 0);
+ − 167
+ − 168 mccount = begin_multiple_change (buf, s, e);
+ − 169 record_change (buf, s, e - s);
428
+ − 170
444
+ − 171 for (pos = s; pos < e; pos++)
428
+ − 172 {
444
+ − 173 Emchar oldc = BUF_FETCH_CHAR (buf, pos);
+ − 174 Emchar c = oldc;
428
+ − 175
+ − 176 switch (flag)
+ − 177 {
+ − 178 case CASE_UP:
+ − 179 c = UPCASE (buf, oldc);
+ − 180 break;
+ − 181 case CASE_DOWN:
+ − 182 c = DOWNCASE (buf, oldc);
+ − 183 break;
+ − 184 case CASE_CAPITALIZE:
+ − 185 case CASE_CAPITALIZE_UP:
+ − 186 /* !!#### need to revalidate the start and end pointers in case
+ − 187 the buffer was changed */
+ − 188 wordp_prev = wordp;
+ − 189 wordp = WORD_SYNTAX_P (syntax_table, c);
+ − 190 if (!wordp) continue;
+ − 191 if (wordp_prev)
+ − 192 {
+ − 193 if (flag == CASE_CAPITALIZE)
+ − 194 c = DOWNCASE (buf, c);
+ − 195 }
+ − 196 else
+ − 197 c = UPCASE (buf, c);
+ − 198 break;
+ − 199 }
+ − 200
+ − 201 if (oldc == c) continue;
444
+ − 202 buffer_replace_char (buf, pos, c, 1, (pos == s));
428
+ − 203 BUF_MODIFF (buf)++;
+ − 204 }
+ − 205
+ − 206 end_multiple_change (buf, mccount);
+ − 207 }
+ − 208
+ − 209 static Lisp_Object
444
+ − 210 casify_region (enum case_action flag, Lisp_Object start, Lisp_Object end,
428
+ − 211 Lisp_Object buffer)
+ − 212 {
444
+ − 213 casify_region_internal (flag, start, end, decode_buffer (buffer, 1));
428
+ − 214 return Qnil;
+ − 215 }
+ − 216
+ − 217 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
+ − 218 Convert the region to upper case. In programs, wants two arguments.
+ − 219 These arguments specify the starting and ending character numbers of
+ − 220 the region to operate on. When used as a command, the text between
+ − 221 point and the mark is operated on.
+ − 222 See also `capitalize-region'.
+ − 223 Optional third arg BUFFER defaults to the current buffer.
+ − 224 */
444
+ − 225 (start, end, buffer))
428
+ − 226 {
+ − 227 /* This function can GC */
444
+ − 228 return casify_region (CASE_UP, start, end, buffer);
428
+ − 229 }
+ − 230
+ − 231 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
+ − 232 Convert the region to lower case. In programs, wants two arguments.
+ − 233 These arguments specify the starting and ending character numbers of
+ − 234 the region to operate on. When used as a command, the text between
+ − 235 point and the mark is operated on.
+ − 236 Optional third arg BUFFER defaults to the current buffer.
+ − 237 */
444
+ − 238 (start, end, buffer))
428
+ − 239 {
+ − 240 /* This function can GC */
444
+ − 241 return casify_region (CASE_DOWN, start, end, buffer);
428
+ − 242 }
+ − 243
+ − 244 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
+ − 245 Convert the region to capitalized form.
+ − 246 Capitalized form means each word's first character is upper case
+ − 247 and the rest of it is lower case.
+ − 248 In programs, give two arguments, the starting and ending
+ − 249 character positions to operate on.
+ − 250 Optional third arg BUFFER defaults to the current buffer.
+ − 251 */
444
+ − 252 (start, end, buffer))
428
+ − 253 {
+ − 254 /* This function can GC */
444
+ − 255 return casify_region (CASE_CAPITALIZE, start, end, buffer);
428
+ − 256 }
+ − 257
+ − 258 /* Like Fcapitalize_region but change only the initials. */
+ − 259
+ − 260 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
+ − 261 Upcase the initial of each word in the region.
+ − 262 Subsequent letters of each word are not changed.
+ − 263 In programs, give two arguments, the starting and ending
+ − 264 character positions to operate on.
+ − 265 Optional third arg BUFFER defaults to the current buffer.
+ − 266 */
444
+ − 267 (start, end, buffer))
428
+ − 268 {
444
+ − 269 return casify_region (CASE_CAPITALIZE_UP, start, end, buffer);
428
+ − 270 }
+ − 271
+ − 272
+ − 273 static Lisp_Object
+ − 274 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
+ − 275 {
+ − 276 Bufpos farend;
+ − 277 struct buffer *buf = decode_buffer (buffer, 1);
+ − 278
+ − 279 CHECK_INT (arg);
+ − 280
+ − 281 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
+ − 282 if (!farend)
+ − 283 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
+ − 284
+ − 285 casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
+ − 286 BUF_SET_PT (buf, max (BUF_PT (buf), farend));
+ − 287 return Qnil;
+ − 288 }
+ − 289
+ − 290 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
444
+ − 291 Convert following word (or COUNT words) to upper case, moving over.
428
+ − 292 With negative argument, convert previous words but do not move.
+ − 293 See also `capitalize-word'.
+ − 294 Optional second arg BUFFER defaults to the current buffer.
+ − 295 */
444
+ − 296 (count, buffer))
428
+ − 297 {
+ − 298 /* This function can GC */
444
+ − 299 return casify_word (CASE_UP, count, buffer);
428
+ − 300 }
+ − 301
+ − 302 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
444
+ − 303 Convert following word (or COUNT words) to lower case, moving over.
428
+ − 304 With negative argument, convert previous words but do not move.
+ − 305 Optional second arg BUFFER defaults to the current buffer.
+ − 306 */
444
+ − 307 (count, buffer))
428
+ − 308 {
+ − 309 /* This function can GC */
444
+ − 310 return casify_word (CASE_DOWN, count, buffer);
428
+ − 311 }
+ − 312
+ − 313 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
444
+ − 314 Capitalize the following word (or COUNT words), moving over.
428
+ − 315 This gives the word(s) a first character in upper case
+ − 316 and the rest lower case.
+ − 317 With negative argument, capitalize previous words but do not move.
+ − 318 Optional second arg BUFFER defaults to the current buffer.
+ − 319 */
444
+ − 320 (count, buffer))
428
+ − 321 {
+ − 322 /* This function can GC */
444
+ − 323 return casify_word (CASE_CAPITALIZE, count, buffer);
428
+ − 324 }
+ − 325
+ − 326
+ − 327 void
+ − 328 syms_of_casefiddle (void)
+ − 329 {
+ − 330 DEFSUBR (Fupcase);
+ − 331 DEFSUBR (Fdowncase);
+ − 332 DEFSUBR (Fcapitalize);
+ − 333 DEFSUBR (Fupcase_initials);
+ − 334 DEFSUBR (Fupcase_region);
+ − 335 DEFSUBR (Fdowncase_region);
+ − 336 DEFSUBR (Fcapitalize_region);
+ − 337 DEFSUBR (Fupcase_initials_region);
+ − 338 DEFSUBR (Fupcase_word);
+ − 339 DEFSUBR (Fdowncase_word);
+ − 340 DEFSUBR (Fcapitalize_word);
+ − 341 }
