/* Basic character support.
Copyright (C) 1995, 1997, 1998, 2001 Electrotechnical Laboratory, JAPAN.
Licensed to the Free Software Foundation.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H13PRO009
character code if possible. Return the resulting code. */
int
-char_resolve_modifier_mask (c)
- int c;
+char_resolve_modifier_mask (int c)
{
/* A non-ASCII character can't reflect modifier bits to the code. */
if (! ASCII_CHAR_P ((c & ~CHAR_MODIFIER_MASK)))
handle them appropriately. */
int
-char_string (c, p)
- unsigned c;
- unsigned char *p;
+char_string (unsigned int c, unsigned char *p)
{
int bytes;
character) of the multibyte form. */
int
-string_char (p, advanced, len)
- const unsigned char *p;
- const unsigned char **advanced;
- int *len;
+string_char (const unsigned char *p, const unsigned char **advanced, int *len)
{
int c;
const unsigned char *saved_p = p;
case, translace C by all tables. */
int
-translate_char (table, c)
- Lisp_Object table;
- int c;
+translate_char (Lisp_Object table, int c)
{
if (CHAR_TABLE_P (table))
{
future. */
int
-multibyte_char_to_unibyte (c, rev_tbl)
- int c;
- Lisp_Object rev_tbl;
+multibyte_char_to_unibyte (int c, Lisp_Object rev_tbl)
{
if (c < 0x80)
return c;
by charset_unibyte. */
int
-multibyte_char_to_unibyte_safe (c)
- int c;
+multibyte_char_to_unibyte_safe (int c)
{
if (c < 0x80)
return c;
DEFUN ("characterp", Fcharacterp, Scharacterp, 1, 2, 0,
doc: /* Return non-nil if OBJECT is a character. */)
- (object, ignore)
- Lisp_Object object, ignore;
+ (Lisp_Object object, Lisp_Object ignore)
{
return (CHARACTERP (object) ? Qt : Qnil);
}
DEFUN ("max-char", Fmax_char, Smax_char, 0, 0, 0,
doc: /* Return the character of the maximum code. */)
- ()
+ (void)
{
return make_number (MAX_CHAR);
}
DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte,
Sunibyte_char_to_multibyte, 1, 1, 0,
doc: /* Convert the byte CH to multibyte character. */)
- (ch)
- Lisp_Object ch;
+ (Lisp_Object ch)
{
int c;
Smultibyte_char_to_unibyte, 1, 1, 0,
doc: /* Convert the multibyte character CH to a byte.
If the multibyte character does not represent a byte, return -1. */)
- (ch)
- Lisp_Object ch;
+ (Lisp_Object ch)
{
int cm;
}
}
-DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0,
- doc: /* Return 1 regardless of the argument CHAR.
-This is now an obsolete function. We keep it just for backward compatibility.
-usage: (char-bytes CHAR) */)
- (ch)
- Lisp_Object ch;
-{
- CHECK_CHARACTER (ch);
- return make_number (1);
-}
-
DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0,
doc: /* Return width of CHAR when displayed in the current buffer.
The width is measured by how many columns it occupies on the screen.
Tab is taken to occupy `tab-width' columns.
usage: (char-width CHAR) */)
- (ch)
- Lisp_Object ch;
+ (Lisp_Object ch)
{
Lisp_Object disp;
int c, width;
characters and bytes of the substring in *NCHARS and *NBYTES
respectively. */
-int
-c_string_width (const unsigned char *str, int len, int precision, int *nchars, int *nbytes)
+EMACS_INT
+c_string_width (const unsigned char *str, EMACS_INT len, int precision,
+ EMACS_INT *nchars, EMACS_INT *nbytes)
{
- int i = 0, i_byte = 0;
- int width = 0;
+ EMACS_INT i = 0, i_byte = 0;
+ EMACS_INT width = 0;
struct Lisp_Char_Table *dp = buffer_display_table ();
while (i_byte < len)
current buffer. The width is measured by how many columns it
occupies on the screen. */
-int
-strwidth (str, len)
- unsigned char *str;
- int len;
+EMACS_INT
+strwidth (const unsigned char *str, EMACS_INT len)
{
return c_string_width (str, len, -1, NULL, NULL);
}
PRECISION, and set number of characters and bytes of the substring
in *NCHARS and *NBYTES respectively. */
-int
-lisp_string_width (string, precision, nchars, nbytes)
- Lisp_Object string;
- int precision, *nchars, *nbytes;
+EMACS_INT
+lisp_string_width (Lisp_Object string, int precision,
+ EMACS_INT *nchars, EMACS_INT *nbytes)
{
- int len = SCHARS (string);
+ EMACS_INT len = SCHARS (string);
/* This set multibyte to 0 even if STRING is multibyte when it
contains only ascii and eight-bit-graphic, but that's
intentional. */
int multibyte = len < SBYTES (string);
unsigned char *str = SDATA (string);
- int i = 0, i_byte = 0;
- int width = 0;
+ EMACS_INT i = 0, i_byte = 0;
+ EMACS_INT width = 0;
struct Lisp_Char_Table *dp = buffer_display_table ();
while (i < len)
the following bytes is not checked. Tabs in STRING are always
taken to occupy `tab-width' columns.
usage: (string-width STRING) */)
- (str)
- Lisp_Object str;
+ (Lisp_Object str)
{
Lisp_Object val;
doc: /* Return the direction of CHAR.
The returned value is 0 for left-to-right and 1 for right-to-left.
usage: (char-direction CHAR) */)
- (ch)
- Lisp_Object ch;
+ (Lisp_Object ch)
{
int c;
nil, we treat each byte as a character. */
EMACS_INT
-chars_in_text (ptr, nbytes)
- const unsigned char *ptr;
- EMACS_INT nbytes;
+chars_in_text (const unsigned char *ptr, EMACS_INT nbytes)
{
/* current_buffer is null at early stages of Emacs initialization. */
if (current_buffer == 0
ignores enable-multibyte-characters. */
EMACS_INT
-multibyte_chars_in_text (ptr, nbytes)
- const unsigned char *ptr;
- EMACS_INT nbytes;
+multibyte_chars_in_text (const unsigned char *ptr, EMACS_INT nbytes)
{
const unsigned char *endp = ptr + nbytes;
- int chars = 0;
+ EMACS_INT chars = 0;
while (ptr < endp)
{
- int len = MULTIBYTE_LENGTH (ptr, endp);
+ EMACS_INT len = MULTIBYTE_LENGTH (ptr, endp);
if (len == 0)
abort ();
represented by 2-byte in a multibyte text. */
void
-parse_str_as_multibyte (str, len, nchars, nbytes)
- const unsigned char *str;
- int len, *nchars, *nbytes;
+parse_str_as_multibyte (const unsigned char *str, EMACS_INT len,
+ EMACS_INT *nchars, EMACS_INT *nbytes)
{
const unsigned char *endp = str + len;
- int n, chars = 0, bytes = 0;
+ EMACS_INT n, chars = 0, bytes = 0;
if (len >= MAX_MULTIBYTE_LENGTH)
{
area and that is enough. Return the number of bytes of the
resulting text. */
-int
-str_as_multibyte (str, len, nbytes, nchars)
- unsigned char *str;
- int len, nbytes, *nchars;
+EMACS_INT
+str_as_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT nbytes,
+ EMACS_INT *nchars)
{
unsigned char *p = str, *endp = str + nbytes;
unsigned char *to;
- int chars = 0;
+ EMACS_INT chars = 0;
int n;
if (nbytes >= MAX_MULTIBYTE_LENGTH)
to = p;
nbytes = endp - p;
endp = str + len;
- safe_bcopy ((char *) p, (char *) (endp - nbytes), nbytes);
+ memmove (endp - nbytes, p, nbytes);
p = endp - nbytes;
if (nbytes >= MAX_MULTIBYTE_LENGTH)
bytes it may ocupy when converted to multibyte string by
`str_to_multibyte'. */
-int
-parse_str_to_multibyte (str, len)
- unsigned char *str;
- int len;
+EMACS_INT
+parse_str_to_multibyte (const unsigned char *str, EMACS_INT len)
{
- unsigned char *endp = str + len;
- int bytes;
+ const unsigned char *endp = str + len;
+ EMACS_INT bytes;
for (bytes = 0; str < endp; str++)
bytes += (*str < 0x80) ? 1 : 2;
that we can use LEN bytes at STR as a work area and that is
enough. */
-int
-str_to_multibyte (str, len, bytes)
- unsigned char *str;
- int len, bytes;
+EMACS_INT
+str_to_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT bytes)
{
unsigned char *p = str, *endp = str + bytes;
unsigned char *to;
to = p;
bytes = endp - p;
endp = str + len;
- safe_bcopy ((char *) p, (char *) (endp - bytes), bytes);
+ memmove (endp - bytes, p, bytes);
p = endp - bytes;
while (p < endp)
{
actually converts characters in the range 0x80..0xFF to
unibyte. */
-int
-str_as_unibyte (str, bytes)
- unsigned char *str;
- int bytes;
+EMACS_INT
+str_as_unibyte (unsigned char *str, EMACS_INT bytes)
{
const unsigned char *p = str, *endp = str + bytes;
unsigned char *to;
Note: Currently the arg ACCEPT_LATIN_1 is not used. */
EMACS_INT
-str_to_unibyte (src, dst, chars, accept_latin_1)
- const unsigned char *src;
- unsigned char *dst;
- EMACS_INT chars;
- int accept_latin_1;
+str_to_unibyte (const unsigned char *src, unsigned char *dst, EMACS_INT chars, int accept_latin_1)
{
EMACS_INT i;
}
-int
-string_count_byte8 (string)
- Lisp_Object string;
+EMACS_INT
+string_count_byte8 (Lisp_Object string)
{
int multibyte = STRING_MULTIBYTE (string);
- int nbytes = SBYTES (string);
+ EMACS_INT nbytes = SBYTES (string);
unsigned char *p = SDATA (string);
unsigned char *pend = p + nbytes;
- int count = 0;
+ EMACS_INT count = 0;
int c, len;
if (multibyte)
Lisp_Object
-string_escape_byte8 (string)
- Lisp_Object string;
+string_escape_byte8 (Lisp_Object string)
{
- int nchars = SCHARS (string);
- int nbytes = SBYTES (string);
+ EMACS_INT nchars = SCHARS (string);
+ EMACS_INT nbytes = SBYTES (string);
int multibyte = STRING_MULTIBYTE (string);
- int byte8_count;
+ EMACS_INT byte8_count;
const unsigned char *src, *src_end;
unsigned char *dst;
Lisp_Object val;
return string;
if (multibyte)
- /* Convert 2-byte sequence of byte8 chars to 4-byte octal. */
- val = make_uninit_multibyte_string (nchars + byte8_count * 3,
- nbytes + byte8_count * 2);
+ {
+ if ((MOST_POSITIVE_FIXNUM - nchars) / 3 < byte8_count
+ || (MOST_POSITIVE_FIXNUM - nbytes) / 2 < byte8_count)
+ error ("Maximum string size exceeded");
+
+ /* Convert 2-byte sequence of byte8 chars to 4-byte octal. */
+ val = make_uninit_multibyte_string (nchars + byte8_count * 3,
+ nbytes + byte8_count * 2);
+ }
else
- /* Convert 1-byte sequence of byte8 chars to 4-byte octal. */
- val = make_uninit_string (nbytes + byte8_count * 3);
+ {
+ if ((MOST_POSITIVE_FIXNUM - nchars) / 3 < byte8_count)
+ error ("Maximum string size exceeded");
+ /* Convert 1-byte sequence of byte8 chars to 4-byte octal. */
+ val = make_uninit_string (nbytes + byte8_count * 3);
+ }
src = SDATA (string);
src_end = src + nbytes;
doc: /*
Concatenate all the argument characters and make the result a string.
usage: (string &rest CHARACTERS) */)
- (n, args)
- int n;
- Lisp_Object *args;
+ (int n, Lisp_Object *args)
{
int i, c;
unsigned char *buf, *p;
DEFUN ("unibyte-string", Funibyte_string, Sunibyte_string, 0, MANY, 0,
doc: /* Concatenate all the argument bytes and make the result a unibyte string.
usage: (unibyte-string &rest BYTES) */)
- (n, args)
- int n;
- Lisp_Object *args;
+ (int n, Lisp_Object *args)
{
int i, c;
unsigned char *buf, *p;
The value is a character with modifiers resolved into the character
code. Unresolved modifiers are kept in the value.
usage: (char-resolve-modifiers CHAR) */)
- (character)
- Lisp_Object character;
+ (Lisp_Object character)
{
int c;
If the current buffer (or STRING) is multibyte, and the target
character is not ASCII nor 8-bit character, an error is signalled. */)
- (position, string)
- Lisp_Object position, string;
+ (Lisp_Object position, Lisp_Object string)
{
int c;
EMACS_INT pos;
void
-init_character_once ()
+init_character_once (void)
{
}
#ifdef emacs
void
-syms_of_character ()
+syms_of_character (void)
{
DEFSYM (Qcharacterp, "characterp");
DEFSYM (Qauto_fill_chars, "auto-fill-chars");
defsubr (&Scharacterp);
defsubr (&Sunibyte_char_to_multibyte);
defsubr (&Smultibyte_char_to_unibyte);
- defsubr (&Schar_bytes);
defsubr (&Schar_width);
defsubr (&Sstring_width);
defsubr (&Schar_direction);
#endif /* emacs */
-/* arch-tag: b6665960-3c3d-4184-85cd-af4318197999
- (do not change this comment) */