--- /dev/null
+/* XEmacs case conversion functions.
+ Copyright (C) 1985, 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: FSF 19.34, but substantially rewritten by Martin. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "buffer.h"
+#include "insdel.h"
+#include "syntax.h"
+
+enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
+\f
+static Lisp_Object
+casify_object (enum case_action flag, Lisp_Object string_or_char,
+ Lisp_Object buffer)
+{
+ struct buffer *buf = decode_buffer (buffer, 0);
+
+ retry:
+
+ if (CHAR_OR_CHAR_INTP (string_or_char))
+ {
+ Emchar c;
+ CHECK_CHAR_COERCE_INT (string_or_char);
+ c = XCHAR (string_or_char);
+ c = (flag == CASE_DOWN) ? DOWNCASE (buf, c) : UPCASE (buf, c);
+ return make_char (c);
+ }
+
+ if (STRINGP (string_or_char))
+ {
+ Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
+ Bufbyte *storage =
+ alloca_array (Bufbyte, XSTRING_LENGTH (string_or_char) * MAX_EMCHAR_LEN);
+ Bufbyte *newp = storage;
+ Bufbyte *oldp = XSTRING_DATA (string_or_char);
+ int wordp = 0, wordp_prev;
+
+ while (*oldp)
+ {
+ Emchar c = charptr_emchar (oldp);
+ switch (flag)
+ {
+ case CASE_UP:
+ c = UPCASE (buf, c);
+ break;
+ case CASE_DOWN:
+ c = DOWNCASE (buf, c);
+ break;
+ case CASE_CAPITALIZE:
+ case CASE_CAPITALIZE_UP:
+ wordp_prev = wordp;
+ wordp = WORD_SYNTAX_P (syntax_table, c);
+ if (!wordp) break;
+ if (wordp_prev)
+ {
+ if (flag == CASE_CAPITALIZE)
+ c = DOWNCASE (buf, c);
+ }
+ else
+ c = UPCASE (buf, c);
+ break;
+ }
+
+ newp += set_charptr_emchar (newp, c);
+ INC_CHARPTR (oldp);
+ }
+
+ return make_string (storage, newp - storage);
+ }
+
+ string_or_char = wrong_type_argument (Qchar_or_string_p, string_or_char);
+ goto retry;
+}
+
+DEFUN ("upcase", Fupcase, 1, 2, 0, /*
+Convert STRING-OR-CHAR to upper case and return that.
+STRING-OR-CHAR may be a character or string. The result has the same type.
+STRING-OR-CHAR is not altered--the value is a copy.
+See also `capitalize', `downcase' and `upcase-initials'.
+Optional second arg BUFFER specifies which buffer's case tables to use,
+ and defaults to the current buffer.
+*/
+ (string_or_char, buffer))
+{
+ return casify_object (CASE_UP, string_or_char, buffer);
+}
+
+DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
+Convert STRING-OR-CHAR to lower case and return that.
+STRING-OR-CHAR may be a character or string. The result has the same type.
+STRING-OR-CHAR is not altered--the value is a copy.
+Optional second arg BUFFER specifies which buffer's case tables to use,
+ and defaults to the current buffer.
+*/
+ (string_or_char, buffer))
+{
+ return casify_object (CASE_DOWN, string_or_char, buffer);
+}
+
+DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
+Convert STRING-OR-CHAR to capitalized form and return that.
+This means that each word's first character is upper case
+and the rest is lower case.
+STRING-OR-CHAR may be a character or string. The result has the same type.
+STRING-OR-CHAR is not altered--the value is a copy.
+Optional second arg BUFFER specifies which buffer's case tables to use,
+ and defaults to the current buffer.
+*/
+ (string_or_char, buffer))
+{
+ return casify_object (CASE_CAPITALIZE, string_or_char, buffer);
+}
+
+/* Like Fcapitalize but change only the initial characters. */
+
+DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
+Convert the initial of each word in STRING-OR-CHAR to upper case.
+Do not change the other letters of each word.
+STRING-OR-CHAR may be a character or string. The result has the same type.
+STRING-OR-CHAR is not altered--the value is a copy.
+Optional second arg BUFFER specifies which buffer's case tables to use,
+ and defaults to the current buffer.
+*/
+ (string_or_char, buffer))
+{
+ return casify_object (CASE_CAPITALIZE_UP, string_or_char, buffer);
+}
+\f
+/* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
+ START and END specify range of buffer to operate on. */
+
+static void
+casify_region_internal (enum case_action flag, Lisp_Object start,
+ Lisp_Object end, struct buffer *buf)
+{
+ /* This function can GC */
+ Bufpos pos, s, e;
+ Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
+ int mccount;
+ int wordp = 0, wordp_prev;
+
+ if (EQ (start, end))
+ /* Not modifying because nothing marked */
+ return;
+
+ get_buffer_range_char (buf, start, end, &s, &e, 0);
+
+ mccount = begin_multiple_change (buf, s, e);
+ record_change (buf, s, e - s);
+
+ for (pos = s; pos < e; pos++)
+ {
+ Emchar oldc = BUF_FETCH_CHAR (buf, pos);
+ Emchar c = oldc;
+
+ switch (flag)
+ {
+ case CASE_UP:
+ c = UPCASE (buf, oldc);
+ break;
+ case CASE_DOWN:
+ c = DOWNCASE (buf, oldc);
+ break;
+ case CASE_CAPITALIZE:
+ case CASE_CAPITALIZE_UP:
+ /* !!#### need to revalidate the start and end pointers in case
+ the buffer was changed */
+ wordp_prev = wordp;
+ wordp = WORD_SYNTAX_P (syntax_table, c);
+ if (!wordp) continue;
+ if (wordp_prev)
+ {
+ if (flag == CASE_CAPITALIZE)
+ c = DOWNCASE (buf, c);
+ }
+ else
+ c = UPCASE (buf, c);
+ break;
+ }
+
+ if (oldc == c) continue;
+ buffer_replace_char (buf, pos, c, 1, (pos == s));
+ BUF_MODIFF (buf)++;
+ }
+
+ end_multiple_change (buf, mccount);
+}
+
+static Lisp_Object
+casify_region (enum case_action flag, Lisp_Object start, Lisp_Object end,
+ Lisp_Object buffer)
+{
+ casify_region_internal (flag, start, end, decode_buffer (buffer, 1));
+ return Qnil;
+}
+
+DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
+Convert the region to upper case. In programs, wants two arguments.
+These arguments specify the starting and ending character numbers of
+ the region to operate on. When used as a command, the text between
+ point and the mark is operated on.
+See also `capitalize-region'.
+Optional third arg BUFFER defaults to the current buffer.
+*/
+ (start, end, buffer))
+{
+ /* This function can GC */
+ return casify_region (CASE_UP, start, end, buffer);
+}
+
+DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
+Convert the region to lower case. In programs, wants two arguments.
+These arguments specify the starting and ending character numbers of
+ the region to operate on. When used as a command, the text between
+ point and the mark is operated on.
+Optional third arg BUFFER defaults to the current buffer.
+*/
+ (start, end, buffer))
+{
+ /* This function can GC */
+ return casify_region (CASE_DOWN, start, end, buffer);
+}
+
+DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
+Convert the region to capitalized form.
+Capitalized form means each word's first character is upper case
+ and the rest of it is lower case.
+In programs, give two arguments, the starting and ending
+ character positions to operate on.
+Optional third arg BUFFER defaults to the current buffer.
+*/
+ (start, end, buffer))
+{
+ /* This function can GC */
+ return casify_region (CASE_CAPITALIZE, start, end, buffer);
+}
+
+/* Like Fcapitalize_region but change only the initials. */
+
+DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
+Upcase the initial of each word in the region.
+Subsequent letters of each word are not changed.
+In programs, give two arguments, the starting and ending
+ character positions to operate on.
+Optional third arg BUFFER defaults to the current buffer.
+*/
+ (start, end, buffer))
+{
+ return casify_region (CASE_CAPITALIZE_UP, start, end, buffer);
+}
+
+\f
+static Lisp_Object
+casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
+{
+ Bufpos farend;
+ struct buffer *buf = decode_buffer (buffer, 1);
+
+ CHECK_INT (arg);
+
+ farend = scan_words (buf, BUF_PT (buf), XINT (arg));
+ if (!farend)
+ farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
+
+ casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
+ BUF_SET_PT (buf, max (BUF_PT (buf), farend));
+ return Qnil;
+}
+
+DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
+Convert following word (or COUNT words) to upper case, moving over.
+With negative argument, convert previous words but do not move.
+See also `capitalize-word'.
+Optional second arg BUFFER defaults to the current buffer.
+*/
+ (count, buffer))
+{
+ /* This function can GC */
+ return casify_word (CASE_UP, count, buffer);
+}
+
+DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
+Convert following word (or COUNT words) to lower case, moving over.
+With negative argument, convert previous words but do not move.
+Optional second arg BUFFER defaults to the current buffer.
+*/
+ (count, buffer))
+{
+ /* This function can GC */
+ return casify_word (CASE_DOWN, count, buffer);
+}
+
+DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
+Capitalize the following word (or COUNT words), moving over.
+This gives the word(s) a first character in upper case
+ and the rest lower case.
+With negative argument, capitalize previous words but do not move.
+Optional second arg BUFFER defaults to the current buffer.
+*/
+ (count, buffer))
+{
+ /* This function can GC */
+ return casify_word (CASE_CAPITALIZE, count, buffer);
+}
+\f
+
+void
+syms_of_casefiddle (void)
+{
+ DEFSUBR (Fupcase);
+ DEFSUBR (Fdowncase);
+ DEFSUBR (Fcapitalize);
+ DEFSUBR (Fupcase_initials);
+ DEFSUBR (Fupcase_region);
+ DEFSUBR (Fdowncase_region);
+ DEFSUBR (Fcapitalize_region);
+ DEFSUBR (Fupcase_initials_region);
+ DEFSUBR (Fupcase_word);
+ DEFSUBR (Fdowncase_word);
+ DEFSUBR (Fcapitalize_word);
+}
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