/* GNU Emacs case conversion functions.
- Copyright (C) 1985, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1994, 1997, 1998, 1999, 2001, 2002, 2003, 2004,
+ 2005, 2006 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include <config.h>
#include "lisp.h"
#include "buffer.h"
+#include "charset.h"
#include "commands.h"
#include "syntax.h"
+#include "composite.h"
+#include "keymap.h"
enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
+
+Lisp_Object Qidentity;
\f
Lisp_Object
casify_object (flag, obj)
register int i, c, len;
register int inword = flag == CASE_DOWN;
+ /* If the case table is flagged as modified, rescan it. */
+ if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1]))
+ Fset_case_table (current_buffer->downcase_table);
+
while (1)
{
if (INTEGERP (obj))
{
- c = XINT (obj);
- if (c >= 0 && c <= 0400)
+ int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER
+ | CHAR_SHIFT | CHAR_CTL | CHAR_META);
+ int flags = XINT (obj) & flagbits;
+
+ /* If the character has higher bits set
+ above the flags, return it unchanged.
+ It is not a real character. */
+ if ((unsigned) XFASTINT (obj) > (unsigned) flagbits)
+ return obj;
+
+ c = DOWNCASE (XFASTINT (obj) & ~flagbits);
+ if (inword)
+ XSETFASTINT (obj, c | flags);
+ else if (c == (XFASTINT (obj) & ~flagbits))
{
- if (inword)
- XFASTINT (obj) = DOWNCASE (c);
- else if (!UPPERCASEP (c))
- XFASTINT (obj) = UPCASE1 (c);
+ c = UPCASE1 ((XFASTINT (obj) & ~flagbits));
+ XSETFASTINT (obj, c | flags);
}
return obj;
}
+
if (STRINGP (obj))
{
+ int multibyte = STRING_MULTIBYTE (obj);
+ int n;
+
obj = Fcopy_sequence (obj);
- len = XSTRING (obj)->size;
- for (i = 0; i < len; i++)
+ len = SBYTES (obj);
+
+ /* I counts bytes, and N counts chars. */
+ for (i = n = 0; i < len; n++)
{
- c = XSTRING (obj)->data[i];
+ int from_len = 1, to_len = 1;
+
+ c = SREF (obj, i);
+
+ if (multibyte && c >= 0x80)
+ c = STRING_CHAR_AND_LENGTH (SDATA (obj) + i, len -i, from_len);
if (inword && flag != CASE_CAPITALIZE_UP)
c = DOWNCASE (c);
else if (!UPPERCASEP (c)
&& (!inword || flag != CASE_CAPITALIZE_UP))
c = UPCASE1 (c);
- XSTRING (obj)->data[i] = c;
+ if ((ASCII_BYTE_P (c) && from_len == 1)
+ || (! multibyte && SINGLE_BYTE_CHAR_P (c)))
+ SSET (obj, i, c);
+ else
+ {
+ to_len = CHAR_BYTES (c);
+ if (from_len == to_len)
+ CHAR_STRING (c, SDATA (obj) + i);
+ else
+ {
+ Faset (obj, make_number (n), make_number (c));
+ len += to_len - from_len;
+ }
+ }
if ((int) flag >= (int) CASE_CAPITALIZE)
inword = SYNTAX (c) == Sword;
+ i += to_len;
}
return obj;
}
}
DEFUN ("upcase", Fupcase, Supcase, 1, 1, 0,
- "Convert argument to upper case and return that.\n\
-The argument may be a character or string. The result has the same type.\n\
-The argument object is not altered--the value is a copy.\n\
-See also `capitalize', `downcase' and `upcase-initials'.")
- (obj)
+ doc: /* Convert argument to upper case and return that.
+The argument may be a character or string. The result has the same type.
+The argument object is not altered--the value is a copy.
+See also `capitalize', `downcase' and `upcase-initials'. */)
+ (obj)
Lisp_Object obj;
{
return casify_object (CASE_UP, obj);
}
DEFUN ("downcase", Fdowncase, Sdowncase, 1, 1, 0,
- "Convert argument to lower case and return that.\n\
-The argument may be a character or string. The result has the same type.\n\
-The argument object is not altered--the value is a copy.")
- (obj)
+ doc: /* Convert argument to lower case and return that.
+The argument may be a character or string. The result has the same type.
+The argument object is not altered--the value is a copy. */)
+ (obj)
Lisp_Object obj;
{
return casify_object (CASE_DOWN, obj);
}
DEFUN ("capitalize", Fcapitalize, Scapitalize, 1, 1, 0,
- "Convert argument to capitalized form and return that.\n\
-This means that each word's first character is upper case\n\
-and the rest is lower case.\n\
-The argument may be a character or string. The result has the same type.\n\
-The argument object is not altered--the value is a copy.")
- (obj)
+ doc: /* Convert argument to capitalized form and return that.
+This means that each word's first character is upper case
+and the rest is lower case.
+The argument may be a character or string. The result has the same type.
+The argument object is not altered--the value is a copy. */)
+ (obj)
Lisp_Object obj;
{
return casify_object (CASE_CAPITALIZE, obj);
}
-DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0,
- "Convert the initial of each word in the argument to upper case.\n\
-Do not change the other letters of each word.\n\
-The argument may be a character or string. The result has the same type.\n\
-The argument object is not altered--the value is a copy.")
- (obj)
- Lisp_Object obj;
-{
- return casify_object (CASE_CAPITALIZE_UP, obj);
-}
-
/* Like Fcapitalize but change only the initials. */
-Lisp_Object
-upcase_initials (obj)
+DEFUN ("upcase-initials", Fupcase_initials, Supcase_initials, 1, 1, 0,
+ doc: /* Convert the initial of each word in the argument to upper case.
+Do not change the other letters of each word.
+The argument may be a character or string. The result has the same type.
+The argument object is not altered--the value is a copy. */)
+ (obj)
Lisp_Object obj;
{
return casify_object (CASE_CAPITALIZE_UP, obj);
/* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
b and e specify range of buffer to operate on. */
+void
casify_region (flag, b, e)
enum case_action flag;
Lisp_Object b, e;
register int i;
register int c;
register int inword = flag == CASE_DOWN;
+ register int multibyte = !NILP (current_buffer->enable_multibyte_characters);
+ int start, end;
+ int start_byte, end_byte;
+ int changed = 0;
if (EQ (b, e))
/* Not modifying because nothing marked */
return;
- validate_region (&b, &e);
- modify_region (current_buffer, XFASTINT (b), XFASTINT (e));
- record_change (XFASTINT (b), XFASTINT (e) - XFASTINT (b));
+ /* If the case table is flagged as modified, rescan it. */
+ if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1]))
+ Fset_case_table (current_buffer->downcase_table);
- for (i = XFASTINT (b); i < XFASTINT (e); i++)
+ validate_region (&b, &e);
+ start = XFASTINT (b);
+ end = XFASTINT (e);
+ modify_region (current_buffer, start, end);
+ record_change (start, end - start);
+ start_byte = CHAR_TO_BYTE (start);
+ end_byte = CHAR_TO_BYTE (end);
+
+ for (i = start_byte; i < end_byte; i++, start++)
{
- c = FETCH_CHAR (i);
+ int c2;
+ c = c2 = FETCH_BYTE (i);
+ if (multibyte && c >= 0x80)
+ /* A multibyte character can't be handled in this simple loop. */
+ break;
if (inword && flag != CASE_CAPITALIZE_UP)
c = DOWNCASE (c);
else if (!UPPERCASEP (c)
&& (!inword || flag != CASE_CAPITALIZE_UP))
c = UPCASE1 (c);
- FETCH_CHAR (i) = c;
+ if (multibyte && c >= 0x80)
+ /* A multibyte result character can't be handled in this
+ simple loop. */
+ break;
+ FETCH_BYTE (i) = c;
+ if (c != c2)
+ changed = 1;
if ((int) flag >= (int) CASE_CAPITALIZE)
- inword = SYNTAX (c) == Sword;
+ inword = SYNTAX (c) == Sword && (inword || !SYNTAX_PREFIX (c));
+ }
+ if (i < end_byte)
+ {
+ /* The work is not yet finished because of a multibyte character
+ just encountered. */
+ int opoint = PT;
+ int opoint_byte = PT_BYTE;
+ int c2;
+
+ while (start < end)
+ {
+ if ((c = FETCH_BYTE (i)) >= 0x80)
+ c = FETCH_MULTIBYTE_CHAR (i);
+ c2 = c;
+ if (inword && flag != CASE_CAPITALIZE_UP)
+ c2 = DOWNCASE (c);
+ else if (!UPPERCASEP (c)
+ && (!inword || flag != CASE_CAPITALIZE_UP))
+ c2 = UPCASE1 (c);
+ if (c != c2)
+ {
+ int fromlen, tolen, j;
+ unsigned char str[MAX_MULTIBYTE_LENGTH];
+
+ changed = 1;
+ /* Handle the most likely case */
+ if (c < 0400 && c2 < 0400)
+ FETCH_BYTE (i) = c2;
+ else if (fromlen = CHAR_STRING (c, str),
+ tolen = CHAR_STRING (c2, str),
+ fromlen == tolen)
+ {
+ /* Length is unchanged. */
+ for (j = 0; j < tolen; ++j)
+ FETCH_BYTE (i + j) = str[j];
+ }
+ else
+ {
+ /* Replace one character with the other,
+ keeping text properties the same. */
+ replace_range_2 (start, i,
+ start + 1, i + fromlen,
+ str, 1, tolen,
+ 1);
+ if (opoint > start)
+ opoint_byte += tolen - fromlen;
+ }
+ }
+ if ((int) flag >= (int) CASE_CAPITALIZE)
+ inword = SYNTAX (c2) == Sword;
+ INC_BOTH (start, i);
+ }
+ TEMP_SET_PT_BOTH (opoint, opoint_byte);
}
- signal_after_change (XFASTINT (b),
- XFASTINT (e) - XFASTINT (b),
- XFASTINT (e) - XFASTINT (b));
+ start = XFASTINT (b);
+ if (changed)
+ {
+ signal_after_change (start, end - start, end - start);
+ update_compositions (start, end, CHECK_ALL);
+ }
}
DEFUN ("upcase-region", Fupcase_region, Supcase_region, 2, 2, "r",
- "Convert the region to upper case. In programs, wants two arguments.\n\
-These arguments specify the starting and ending character numbers of\n\
-the region to operate on. When used as a command, the text between\n\
-point and the mark is operated on.\n\
-See also `capitalize-region'.")
- (b, e)
- Lisp_Object b, e;
+ doc: /* 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'. */)
+ (beg, end)
+ Lisp_Object beg, end;
{
- casify_region (CASE_UP, b, e);
+ casify_region (CASE_UP, beg, end);
return Qnil;
}
DEFUN ("downcase-region", Fdowncase_region, Sdowncase_region, 2, 2, "r",
- "Convert the region to lower case. In programs, wants two arguments.\n\
-These arguments specify the starting and ending character numbers of\n\
-the region to operate on. When used as a command, the text between\n\
-point and the mark is operated on.")
- (b, e)
- Lisp_Object b, e;
+ doc: /* 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. */)
+ (beg, end)
+ Lisp_Object beg, end;
{
- casify_region (CASE_DOWN, b, e);
+ casify_region (CASE_DOWN, beg, end);
return Qnil;
}
DEFUN ("capitalize-region", Fcapitalize_region, Scapitalize_region, 2, 2, "r",
- "Convert the region to capitalized form.\n\
-Capitalized form means each word's first character is upper case\n\
-and the rest of it is lower case.\n\
-In programs, give two arguments, the starting and ending\n\
-character positions to operate on.")
- (b, e)
- Lisp_Object b, e;
-{
- casify_region (CASE_CAPITALIZE, b, e);
- return Qnil;
-}
-
-DEFUN ("upcase-initials-region", Fupcase_initials_region,
- Supcase_initials_region, 2, 2, "r",
- "Upcase the initial of each word in the region.\n\
-Subsequent letters of each word are not changed.\n\
-In programs, give two arguments, the starting and ending\n\
-character positions to operate on.")
- (b, e)
- Lisp_Object b, e;
+ doc: /* 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. */)
+ (beg, end)
+ Lisp_Object beg, end;
{
- casify_region (CASE_CAPITALIZE_UP, b, e);
+ casify_region (CASE_CAPITALIZE, beg, end);
return Qnil;
}
/* Like Fcapitalize_region but change only the initials. */
-Lisp_Object
-upcase_initials_region (b, e)
- Lisp_Object b, e;
+DEFUN ("upcase-initials-region", Fupcase_initials_region,
+ Supcase_initials_region, 2, 2, "r",
+ doc: /* 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. */)
+ (beg, end)
+ Lisp_Object beg, end;
{
- casify_region (CASE_CAPITALIZE_UP, b, e);
+ casify_region (CASE_CAPITALIZE_UP, beg, end);
return Qnil;
}
\f
{
Lisp_Object val;
int farend;
+ int iarg;
- CHECK_NUMBER (arg, 0);
- farend = scan_words (point, XINT (arg));
+ CHECK_NUMBER (arg);
+ iarg = XINT (arg);
+ farend = scan_words (PT, iarg);
if (!farend)
- farend = XINT (arg) > 0 ? ZV : BEGV;
+ farend = iarg > 0 ? ZV : BEGV;
- *newpoint = point > farend ? point : farend;
- XFASTINT (val) = farend;
+ *newpoint = PT > farend ? PT : farend;
+ XSETFASTINT (val, farend);
return val;
}
DEFUN ("upcase-word", Fupcase_word, Supcase_word, 1, 1, "p",
- "Convert following word (or ARG words) to upper case, moving over.\n\
-With negative argument, convert previous words but do not move.\n\
-See also `capitalize-word'.")
- (arg)
+ doc: /* Convert following word (or ARG words) to upper case, moving over.
+With negative argument, convert previous words but do not move.
+See also `capitalize-word'. */)
+ (arg)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
- XFASTINT (beg) = point;
+ XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_UP, beg, end);
SET_PT (newpoint);
}
DEFUN ("downcase-word", Fdowncase_word, Sdowncase_word, 1, 1, "p",
- "Convert following word (or ARG words) to lower case, moving over.\n\
-With negative argument, convert previous words but do not move.")
- (arg)
+ doc: /* Convert following word (or ARG words) to lower case, moving over.
+With negative argument, convert previous words but do not move. */)
+ (arg)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
- XFASTINT (beg) = point;
+ XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_DOWN, beg, end);
SET_PT (newpoint);
}
DEFUN ("capitalize-word", Fcapitalize_word, Scapitalize_word, 1, 1, "p",
- "Capitalize the following word (or ARG words), moving over.\n\
-This gives the word(s) a first character in upper case\n\
-and the rest lower case.\n\
-With negative argument, capitalize previous words but do not move.")
- (arg)
+ doc: /* Capitalize the following word (or ARG 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. */)
+ (arg)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
- XFASTINT (beg) = point;
+ XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_CAPITALIZE, beg, end);
SET_PT (newpoint);
return Qnil;
}
\f
+void
syms_of_casefiddle ()
{
+ Qidentity = intern ("identity");
+ staticpro (&Qidentity);
defsubr (&Supcase);
defsubr (&Sdowncase);
defsubr (&Scapitalize);
defsubr (&Scapitalize_word);
}
+void
keys_of_casefiddle ()
{
initial_define_key (control_x_map, Ctl('U'), "upcase-region");
initial_define_key (meta_map, 'l', "downcase-word");
initial_define_key (meta_map, 'c', "capitalize-word");
}
+
+/* arch-tag: 60a73c66-5489-47e7-a81f-cead4057c526
+ (do not change this comment) */