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| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Mon, 24 Dec 2012 03:08:33 +0900 |
| parents | 56144c8593a8 |
| children |
| rev | line source |
|---|---|
| 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 | |
|
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
| 428 | 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 | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* Synched up with: FSF 19.34, but substantially rewritten by Martin. */ | |
| 21 | |
| 22 #include <config.h> | |
| 23 #include "lisp.h" | |
| 24 | |
| 25 #include "buffer.h" | |
| 26 #include "insdel.h" | |
| 27 #include "syntax.h" | |
| 28 | |
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29 enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP, |
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30 CASE_CANONICALIZE}; |
| 428 | 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 { |
| 867 | 42 Ichar c; |
| 444 | 43 CHECK_CHAR_COERCE_INT (string_or_char); |
| 44 c = XCHAR (string_or_char); | |
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45 if (flag == CASE_DOWN) |
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46 { |
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47 c = DOWNCASE (buf, c); |
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48 } |
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49 else if (flag == CASE_UP) |
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50 { |
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51 c = UPCASE (buf, c); |
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52 } |
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53 else |
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54 { |
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55 c = CANONCASE (buf, c); |
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56 } |
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57 |
| 428 | 58 return make_char (c); |
| 59 } | |
| 60 | |
| 444 | 61 if (STRINGP (string_or_char)) |
| 428 | 62 { |
| 826 | 63 Lisp_Object syntax_table = buf->mirror_syntax_table; |
| 867 | 64 Ibyte *storage = |
| 2367 | 65 alloca_ibytes (XSTRING_LENGTH (string_or_char) * MAX_ICHAR_LEN); |
| 867 | 66 Ibyte *newp = storage; |
| 67 Ibyte *oldp = XSTRING_DATA (string_or_char); | |
| 68 Ibyte *endp = oldp + XSTRING_LENGTH (string_or_char); | |
| 428 | 69 int wordp = 0, wordp_prev; |
| 70 | |
| 771 | 71 while (oldp < endp) |
| 428 | 72 { |
| 867 | 73 Ichar c = itext_ichar (oldp); |
| 428 | 74 switch (flag) |
| 75 { | |
| 76 case CASE_UP: | |
| 77 c = UPCASE (buf, c); | |
| 78 break; | |
| 79 case CASE_DOWN: | |
| 80 c = DOWNCASE (buf, c); | |
| 81 break; | |
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82 case CASE_CANONICALIZE: |
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83 c = CANONCASE (buf, c); |
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84 break; |
| 428 | 85 case CASE_CAPITALIZE: |
| 86 case CASE_CAPITALIZE_UP: | |
| 87 wordp_prev = wordp; | |
| 88 wordp = WORD_SYNTAX_P (syntax_table, c); | |
| 89 if (!wordp) break; | |
| 90 if (wordp_prev) | |
| 91 { | |
| 92 if (flag == CASE_CAPITALIZE) | |
| 93 c = DOWNCASE (buf, c); | |
| 94 } | |
| 95 else | |
| 96 c = UPCASE (buf, c); | |
| 97 break; | |
| 98 } | |
| 99 | |
| 867 | 100 newp += set_itext_ichar (newp, c); |
| 101 INC_IBYTEPTR (oldp); | |
| 428 | 102 } |
| 103 | |
| 104 return make_string (storage, newp - storage); | |
| 105 } | |
| 106 | |
| 444 | 107 string_or_char = wrong_type_argument (Qchar_or_string_p, string_or_char); |
| 428 | 108 goto retry; |
| 109 } | |
| 110 | |
| 111 DEFUN ("upcase", Fupcase, 1, 2, 0, /* | |
| 444 | 112 Convert STRING-OR-CHAR to upper 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 See also `capitalize', `downcase' and `upcase-initials'. |
| 116 Optional second arg BUFFER specifies which buffer's case tables to use, | |
| 117 and defaults to the current buffer. | |
| 118 */ | |
| 444 | 119 (string_or_char, buffer)) |
| 428 | 120 { |
| 444 | 121 return casify_object (CASE_UP, string_or_char, buffer); |
| 428 | 122 } |
| 123 | |
| 124 DEFUN ("downcase", Fdowncase, 1, 2, 0, /* | |
| 444 | 125 Convert STRING-OR-CHAR to lower case and return that. |
| 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 { |
| 444 | 133 return casify_object (CASE_DOWN, string_or_char, buffer); |
| 428 | 134 } |
| 135 | |
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136 DEFUN ("canoncase", Fcanoncase, 1, 2, 0, /* |
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137 Convert STRING-OR-CHAR to its canonical lowercase form and return that. |
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138 |
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139 STRING-OR-CHAR may be a character or string. The result has the same type. |
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140 STRING-OR-CHAR is not altered--the value is a copy. |
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141 |
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142 Optional second arg BUFFER specifies which buffer's case tables to use, |
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143 and defaults to the current buffer. |
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144 |
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145 For any N characters that are equivalent in case-insensitive searching, |
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146 their canonical lowercase character will be the same. |
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147 */ |
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148 (string_or_char, buffer)) |
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149 { |
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150 return casify_object (CASE_CANONICALIZE, string_or_char, buffer); |
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151 } |
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152 |
| 428 | 153 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /* |
| 444 | 154 Convert STRING-OR-CHAR to capitalized form and return that. |
| 428 | 155 This means that each word's first character is upper case |
| 156 and the rest is lower case. | |
| 444 | 157 STRING-OR-CHAR may be a character or string. The result has the same type. |
| 158 STRING-OR-CHAR is not altered--the value is a copy. | |
| 428 | 159 Optional second arg BUFFER specifies which buffer's case tables to use, |
| 160 and defaults to the current buffer. | |
| 161 */ | |
| 444 | 162 (string_or_char, buffer)) |
| 428 | 163 { |
| 444 | 164 return casify_object (CASE_CAPITALIZE, string_or_char, buffer); |
| 428 | 165 } |
| 166 | |
| 167 /* Like Fcapitalize but change only the initial characters. */ | |
| 168 | |
| 169 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /* | |
| 444 | 170 Convert the initial of each word in STRING-OR-CHAR to upper case. |
| 428 | 171 Do not change the other letters of each word. |
| 444 | 172 STRING-OR-CHAR may be a character or string. The result has the same type. |
| 173 STRING-OR-CHAR is not altered--the value is a copy. | |
| 428 | 174 Optional second arg BUFFER specifies which buffer's case tables to use, |
| 175 and defaults to the current buffer. | |
| 176 */ | |
| 444 | 177 (string_or_char, buffer)) |
| 428 | 178 { |
| 444 | 179 return casify_object (CASE_CAPITALIZE_UP, string_or_char, buffer); |
| 428 | 180 } |
| 181 | |
| 182 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP. | |
| 444 | 183 START and END specify range of buffer to operate on. */ |
| 428 | 184 |
| 185 static void | |
| 444 | 186 casify_region_internal (enum case_action flag, Lisp_Object start, |
| 187 Lisp_Object end, struct buffer *buf) | |
| 428 | 188 { |
| 189 /* This function can GC */ | |
| 665 | 190 Charbpos pos, s, e; |
| 826 | 191 Lisp_Object syntax_table = buf->mirror_syntax_table; |
| 428 | 192 int mccount; |
| 193 int wordp = 0, wordp_prev; | |
| 194 | |
| 444 | 195 if (EQ (start, end)) |
| 428 | 196 /* Not modifying because nothing marked */ |
| 197 return; | |
| 198 | |
| 444 | 199 get_buffer_range_char (buf, start, end, &s, &e, 0); |
| 200 | |
| 201 mccount = begin_multiple_change (buf, s, e); | |
| 202 record_change (buf, s, e - s); | |
| 428 | 203 |
| 444 | 204 for (pos = s; pos < e; pos++) |
| 428 | 205 { |
| 867 | 206 Ichar oldc = BUF_FETCH_CHAR (buf, pos); |
| 207 Ichar c = oldc; | |
| 428 | 208 |
| 209 switch (flag) | |
| 210 { | |
| 211 case CASE_UP: | |
| 212 c = UPCASE (buf, oldc); | |
| 213 break; | |
| 214 case CASE_DOWN: | |
| 215 c = DOWNCASE (buf, oldc); | |
| 216 break; | |
| 217 case CASE_CAPITALIZE: | |
| 218 case CASE_CAPITALIZE_UP: | |
| 219 /* !!#### need to revalidate the start and end pointers in case | |
| 220 the buffer was changed */ | |
| 221 wordp_prev = wordp; | |
| 222 wordp = WORD_SYNTAX_P (syntax_table, c); | |
| 223 if (!wordp) continue; | |
| 224 if (wordp_prev) | |
| 225 { | |
| 226 if (flag == CASE_CAPITALIZE) | |
| 227 c = DOWNCASE (buf, c); | |
| 228 } | |
| 229 else | |
| 230 c = UPCASE (buf, c); | |
| 231 break; | |
| 232 } | |
| 233 | |
| 234 if (oldc == c) continue; | |
| 444 | 235 buffer_replace_char (buf, pos, c, 1, (pos == s)); |
| 428 | 236 BUF_MODIFF (buf)++; |
| 237 } | |
| 238 | |
| 239 end_multiple_change (buf, mccount); | |
| 240 } | |
| 241 | |
| 242 static Lisp_Object | |
| 444 | 243 casify_region (enum case_action flag, Lisp_Object start, Lisp_Object end, |
| 428 | 244 Lisp_Object buffer) |
| 245 { | |
| 444 | 246 casify_region_internal (flag, start, end, decode_buffer (buffer, 1)); |
| 428 | 247 return Qnil; |
| 248 } | |
| 249 | |
| 250 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /* | |
| 251 Convert the region to upper case. In programs, wants two arguments. | |
| 252 These arguments specify the starting and ending character numbers of | |
| 253 the region to operate on. When used as a command, the text between | |
| 254 point and the mark is operated on. | |
| 255 See also `capitalize-region'. | |
| 256 Optional third arg BUFFER defaults to the current buffer. | |
| 257 */ | |
| 444 | 258 (start, end, buffer)) |
| 428 | 259 { |
| 260 /* This function can GC */ | |
| 444 | 261 return casify_region (CASE_UP, start, end, buffer); |
| 428 | 262 } |
| 263 | |
| 264 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /* | |
| 265 Convert the region to lower case. In programs, wants two arguments. | |
| 266 These arguments specify the starting and ending character numbers of | |
| 267 the region to operate on. When used as a command, the text between | |
| 268 point and the mark is operated on. | |
| 269 Optional third arg BUFFER defaults to the current buffer. | |
| 270 */ | |
| 444 | 271 (start, end, buffer)) |
| 428 | 272 { |
| 273 /* This function can GC */ | |
| 444 | 274 return casify_region (CASE_DOWN, start, end, buffer); |
| 428 | 275 } |
| 276 | |
| 277 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /* | |
| 278 Convert the region to capitalized form. | |
| 279 Capitalized form means each word's first character is upper case | |
| 280 and the rest of it is lower case. | |
| 281 In programs, give two arguments, the starting and ending | |
| 282 character positions to operate on. | |
| 283 Optional third arg BUFFER defaults to the current buffer. | |
| 284 */ | |
| 444 | 285 (start, end, buffer)) |
| 428 | 286 { |
| 287 /* This function can GC */ | |
| 444 | 288 return casify_region (CASE_CAPITALIZE, start, end, buffer); |
| 428 | 289 } |
| 290 | |
| 291 /* Like Fcapitalize_region but change only the initials. */ | |
| 292 | |
| 293 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /* | |
| 294 Upcase the initial of each word in the region. | |
| 295 Subsequent letters of each word are not changed. | |
| 296 In programs, give two arguments, the starting and ending | |
| 297 character positions to operate on. | |
| 298 Optional third arg BUFFER defaults to the current buffer. | |
| 299 */ | |
| 444 | 300 (start, end, buffer)) |
| 428 | 301 { |
| 444 | 302 return casify_region (CASE_CAPITALIZE_UP, start, end, buffer); |
| 428 | 303 } |
| 304 | |
| 305 | |
| 306 static Lisp_Object | |
| 307 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer) | |
| 308 { | |
| 665 | 309 Charbpos farend; |
| 428 | 310 struct buffer *buf = decode_buffer (buffer, 1); |
| 311 | |
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312 CHECK_FIXNUM (arg); |
| 428 | 313 |
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314 farend = scan_words (buf, BUF_PT (buf), XFIXNUM (arg)); |
| 428 | 315 if (!farend) |
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316 farend = XFIXNUM (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf); |
| 428 | 317 |
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318 casify_region_internal (flag, make_fixnum (BUF_PT (buf)), make_fixnum (farend), buf); |
| 428 | 319 BUF_SET_PT (buf, max (BUF_PT (buf), farend)); |
| 320 return Qnil; | |
| 321 } | |
| 322 | |
| 323 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /* | |
| 444 | 324 Convert following word (or COUNT words) to upper case, moving over. |
| 428 | 325 With negative argument, convert previous words but do not move. |
| 326 See also `capitalize-word'. | |
| 327 Optional second arg BUFFER defaults to the current buffer. | |
| 328 */ | |
| 444 | 329 (count, buffer)) |
| 428 | 330 { |
| 331 /* This function can GC */ | |
| 444 | 332 return casify_word (CASE_UP, count, buffer); |
| 428 | 333 } |
| 334 | |
| 335 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /* | |
| 444 | 336 Convert following word (or COUNT words) to lower case, moving over. |
| 428 | 337 With negative argument, convert previous words but do not move. |
| 338 Optional second arg BUFFER defaults to the current buffer. | |
| 339 */ | |
| 444 | 340 (count, buffer)) |
| 428 | 341 { |
| 342 /* This function can GC */ | |
| 444 | 343 return casify_word (CASE_DOWN, count, buffer); |
| 428 | 344 } |
| 345 | |
| 346 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /* | |
| 444 | 347 Capitalize the following word (or COUNT words), moving over. |
| 428 | 348 This gives the word(s) a first character in upper case |
| 349 and the rest lower case. | |
| 350 With negative argument, capitalize previous words but do not move. | |
| 351 Optional second arg BUFFER defaults to the current buffer. | |
| 352 */ | |
| 444 | 353 (count, buffer)) |
| 428 | 354 { |
| 355 /* This function can GC */ | |
| 444 | 356 return casify_word (CASE_CAPITALIZE, count, buffer); |
| 428 | 357 } |
| 358 | |
| 359 | |
| 360 void | |
| 361 syms_of_casefiddle (void) | |
| 362 { | |
| 363 DEFSUBR (Fupcase); | |
| 364 DEFSUBR (Fdowncase); | |
|
4910
6bc1f3f6cf0d
Make canoncase visible to Lisp; use it with chars in internal_equalp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
2367
diff
changeset
|
365 DEFSUBR (Fcanoncase); |
| 428 | 366 DEFSUBR (Fcapitalize); |
| 367 DEFSUBR (Fupcase_initials); | |
| 368 DEFSUBR (Fupcase_region); | |
| 369 DEFSUBR (Fdowncase_region); | |
| 370 DEFSUBR (Fcapitalize_region); | |
| 371 DEFSUBR (Fupcase_initials_region); | |
| 372 DEFSUBR (Fupcase_word); | |
| 373 DEFSUBR (Fdowncase_word); | |
| 374 DEFSUBR (Fcapitalize_word); | |
| 375 } |