1 /* XEmacs case conversion functions.
2 Copyright (C) 1985, 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
4 This file is part of XEmacs.
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
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
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. */
21 /* Synched up with: FSF 19.34, but substantially rewritten by Martin. */
30 enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
33 casify_object (enum case_action flag, Lisp_Object obj, Lisp_Object buffer)
35 struct buffer *buf = decode_buffer (buffer, 0);
39 if (CHAR_OR_CHAR_INTP (obj))
42 CHECK_CHAR_COERCE_INT (obj);
44 c = (flag == CASE_DOWN) ? DOWNCASE (buf, c) : UPCASE (buf, c);
50 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
52 alloca_array (Bufbyte, XSTRING_LENGTH (obj) * MAX_EMCHAR_LEN);
53 Bufbyte *newp = storage;
54 Bufbyte *oldp = XSTRING_DATA (obj);
55 int wordp = 0, wordp_prev;
59 Emchar c = charptr_emchar (oldp);
66 c = DOWNCASE (buf, c);
69 case CASE_CAPITALIZE_UP:
71 wordp = WORD_SYNTAX_P (syntax_table, c);
75 if (flag == CASE_CAPITALIZE)
76 c = DOWNCASE (buf, c);
83 newp += set_charptr_emchar (newp, c);
87 return make_string (storage, newp - storage);
90 obj = wrong_type_argument (Qchar_or_string_p, obj);
94 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
95 Convert OBJECT to upper case and return that.
96 OBJECT may be a character or string. The result has the same type.
97 OBJECT is not altered--the value is a copy.
98 See also `capitalize', `downcase' and `upcase-initials'.
99 Optional second arg BUFFER specifies which buffer's case tables to use,
100 and defaults to the current buffer.
104 return casify_object (CASE_UP, object, buffer);
107 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
108 Convert OBJECT to lower case and return that.
109 OBJECT may be a character or string. The result has the same type.
110 OBJECT is not altered--the value is a copy.
111 Optional second arg BUFFER specifies which buffer's case tables to use,
112 and defaults to the current buffer.
116 return casify_object (CASE_DOWN, object, buffer);
119 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
120 Convert OBJECT to capitalized form and return that.
121 This means that each word's first character is upper case
122 and the rest is lower case.
123 OBJECT may be a character or string. The result has the same type.
124 OBJECT is not altered--the value is a copy.
125 Optional second arg BUFFER specifies which buffer's case tables to use,
126 and defaults to the current buffer.
130 return casify_object (CASE_CAPITALIZE, object, buffer);
133 /* Like Fcapitalize but change only the initial characters. */
135 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
136 Convert the initial of each word in OBJECT to upper case.
137 Do not change the other letters of each word.
138 OBJECT may be a character or string. The result has the same type.
139 OBJECT is not altered--the value is a copy.
140 Optional second arg BUFFER specifies which buffer's case tables to use,
141 and defaults to the current buffer.
145 return casify_object (CASE_CAPITALIZE_UP, object, buffer);
148 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
149 b and e specify range of buffer to operate on. */
152 casify_region_internal (enum case_action flag, Lisp_Object b, Lisp_Object e,
155 /* This function can GC */
158 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
161 int wordp = 0, wordp_prev;
164 /* Not modifying because nothing marked */
167 get_buffer_range_char (buf, b, e, &start, &end, 0);
169 mccount = begin_multiple_change (buf, start, end);
170 record_change (buf, start, end - start);
172 for (i = start; i < end; i++)
174 c = oldc = BUF_FETCH_CHAR (buf, i);
179 c = UPCASE (buf, oldc);
182 c = DOWNCASE (buf, oldc);
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 */
189 wordp = WORD_SYNTAX_P (syntax_table, c);
190 if (!wordp) continue;
193 if (flag == CASE_CAPITALIZE)
194 c = DOWNCASE (buf, c);
201 if (oldc == c) continue;
202 buffer_replace_char (buf, i, c, 1, (i == start));
206 end_multiple_change (buf, mccount);
210 casify_region (enum case_action flag, Lisp_Object b, Lisp_Object e,
213 casify_region_internal (flag, b, e, decode_buffer (buffer, 1));
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.
227 /* This function can GC */
228 return casify_region (CASE_UP, b, e, buffer);
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.
240 /* This function can GC */
241 return casify_region (CASE_DOWN, b, e, buffer);
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.
254 /* This function can GC */
255 return casify_region (CASE_CAPITALIZE, b, e, buffer);
258 /* Like Fcapitalize_region but change only the initials. */
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.
269 return casify_region (CASE_CAPITALIZE_UP, b, e, buffer);
274 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
277 struct buffer *buf = decode_buffer (buffer, 1);
281 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
283 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
285 casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
286 BUF_SET_PT (buf, max (BUF_PT (buf), farend));
290 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
291 Convert following word (or N words) to upper case, moving over.
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.
298 /* This function can GC */
299 return casify_word (CASE_UP, n, buffer);
302 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
303 Convert following word (or N words) to lower case, moving over.
304 With negative argument, convert previous words but do not move.
305 Optional second arg BUFFER defaults to the current buffer.
309 /* This function can GC */
310 return casify_word (CASE_DOWN, n, buffer);
313 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
314 Capitalize the following word (or N words), moving over.
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.
322 /* This function can GC */
323 return casify_word (CASE_CAPITALIZE, n, buffer);
328 syms_of_casefiddle (void)
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);