#include <config.h>
#include "lisp.h"
#include "buffer.h"
#include "charset.h"
#include "commands.h"
#include "syntax.h"
enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
Lisp_Object Qidentity;
Lisp_Object
casify_object (flag, obj)
enum case_action flag;
Lisp_Object obj;
{
register int i, c, len;
register int inword = flag == CASE_DOWN;
Lisp_Object tem;
if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1]))
Fset_case_table (current_buffer->downcase_table);
while (1)
{
if (INTEGERP (obj))
{
int flagbits = (CHAR_ALT | CHAR_SUPER | CHAR_HYPER
| CHAR_SHIFT | CHAR_CTL | CHAR_META);
int flags = XINT (obj) & flagbits;
c = DOWNCASE (XFASTINT (obj) & ~flagbits);
if (inword)
XSETFASTINT (obj, c | flags);
else if (c == (XFASTINT (obj) & ~flagbits))
{
c = UPCASE1 ((XFASTINT (obj) & ~flagbits));
XSETFASTINT (obj, c | flags);
}
return obj;
}
if (STRINGP (obj))
{
int multibyte = STRING_MULTIBYTE (obj);
obj = Fcopy_sequence (obj);
len = STRING_BYTES (XSTRING (obj));
for (i = 0; i < len;)
{
c = XSTRING (obj)->data[i];
if (multibyte && c >= 0x80)
break;
if (inword && flag != CASE_CAPITALIZE_UP)
c = DOWNCASE (c);
else if (!UPPERCASEP (c)
&& (!inword || flag != CASE_CAPITALIZE_UP))
c = UPCASE1 (c);
if (multibyte ? ! ASCII_BYTE_P (c)
: ! SINGLE_BYTE_CHAR_P (c))
break;
XSTRING (obj)->data[i] = c;
if ((int) flag >= (int) CASE_CAPITALIZE)
inword = SYNTAX (c) == Sword;
i++;
}
if (i < len)
{
int fromlen, tolen, j_byte = i;
char *buf
= (char *) alloca ((len - i) * MAX_LENGTH_OF_MULTI_BYTE_FORM
+ i);
unsigned char *str, workbuf[4];
bcopy (XSTRING (obj)->data, buf, i);
while (i < len)
{
c = STRING_CHAR_AND_LENGTH (XSTRING (obj)->data + i,
len - i, fromlen);
if (inword && flag != CASE_CAPITALIZE_UP)
c = DOWNCASE (c);
else if (!UPPERCASEP (c)
&& (!inword || flag != CASE_CAPITALIZE_UP))
c = UPCASE1 (c);
tolen = CHAR_STRING (c, workbuf, str);
bcopy (str, buf + j_byte, tolen);
i += fromlen;
j_byte += tolen;
if ((int) flag >= (int) CASE_CAPITALIZE)
inword = SYNTAX (c) == Sword;
}
obj = make_multibyte_string (buf, XSTRING (obj)->size,
j_byte);
}
return obj;
}
obj = wrong_type_argument (Qchar_or_string_p, 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)
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)
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)
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);
}
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;
Lisp_Object ch, downch, val;
if (EQ (b, e))
return;
if (NILP (XCHAR_TABLE (current_buffer->downcase_table)->extras[1]))
Fset_case_table (current_buffer->downcase_table);
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++)
{
c = FETCH_BYTE (i);
if (multibyte && c >= 0x80)
break;
if (inword && flag != CASE_CAPITALIZE_UP)
c = DOWNCASE (c);
else if (!UPPERCASEP (c)
&& (!inword || flag != CASE_CAPITALIZE_UP))
c = UPCASE1 (c);
FETCH_BYTE (i) = c;
if ((int) flag >= (int) CASE_CAPITALIZE)
inword = SYNTAX (c) == Sword;
}
if (i < end_byte)
{
int opoint = PT;
int opoint_byte = PT_BYTE;
int c2;
while (i < end_byte)
{
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 workbuf[4], *str;
if (c < 0400 && c2 < 0400)
FETCH_BYTE (i) = c2;
else if (fromlen = CHAR_STRING (c, workbuf, str),
tolen = CHAR_STRING (c2, workbuf, str),
fromlen == tolen)
{
for (j = 0; j < tolen; ++j)
FETCH_BYTE (i + j) = str[j];
}
else
{
error ("Can't casify letters that change length");
#if 0
if (tolen < fromlen)
del_range_1 (i + tolen, i + fromlen, 0);
else if (tolen > fromlen)
{
TEMP_SET_PT (i + fromlen);
insert_1 (str + fromlen, tolen - fromlen, 1, 0, 0);
}
#endif
}
}
if ((int) flag >= (int) CASE_CAPITALIZE)
inword = SYNTAX (c2) == Sword;
INC_POS (i);
}
TEMP_SET_PT_BOTH (opoint, opoint_byte);
}
signal_after_change (start, end - start, end - start);
}
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'.")
(beg, end)
Lisp_Object beg, end;
{
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.")
(beg, end)
Lisp_Object beg, end;
{
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.")
(beg, end)
Lisp_Object beg, end;
{
casify_region (CASE_CAPITALIZE, beg, end);
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.")
(beg, end)
Lisp_Object beg, end;
{
casify_region (CASE_CAPITALIZE_UP, beg, end);
return Qnil;
}
Lisp_Object
operate_on_word (arg, newpoint)
Lisp_Object arg;
int *newpoint;
{
Lisp_Object val;
int farend;
int iarg;
CHECK_NUMBER (arg, 0);
iarg = XINT (arg);
farend = scan_words (PT, iarg);
if (!farend)
farend = iarg > 0 ? ZV : BEGV;
*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)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_UP, beg, end);
SET_PT (newpoint);
return Qnil;
}
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)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_DOWN, beg, end);
SET_PT (newpoint);
return Qnil;
}
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)
Lisp_Object arg;
{
Lisp_Object beg, end;
int newpoint;
XSETFASTINT (beg, PT);
end = operate_on_word (arg, &newpoint);
casify_region (CASE_CAPITALIZE, beg, end);
SET_PT (newpoint);
return Qnil;
}
void
syms_of_casefiddle ()
{
Qidentity = intern ("identity");
staticpro (&Qidentity);
defsubr (&Supcase);
defsubr (&Sdowncase);
defsubr (&Scapitalize);
defsubr (&Supcase_initials);
defsubr (&Supcase_region);
defsubr (&Sdowncase_region);
defsubr (&Scapitalize_region);
defsubr (&Supcase_initials_region);
defsubr (&Supcase_word);
defsubr (&Sdowncase_word);
defsubr (&Scapitalize_word);
}
void
keys_of_casefiddle ()
{
initial_define_key (control_x_map, Ctl('U'), "upcase-region");
Fput (intern ("upcase-region"), Qdisabled, Qt);
initial_define_key (control_x_map, Ctl('L'), "downcase-region");
Fput (intern ("downcase-region"), Qdisabled, Qt);
initial_define_key (meta_map, 'u', "upcase-word");
initial_define_key (meta_map, 'l', "downcase-word");
initial_define_key (meta_map, 'c', "capitalize-word");
}