#include <config.h>
#endif
+#define CHARACTER_INLINE EXTERN_INLINE
+
#include <stdio.h>
#ifdef emacs
Unicode character. Mainly used by the macro MAYBE_UNIFY_CHAR. */
Lisp_Object Vchar_unify_table;
-/* Variable used locally in the macro FETCH_MULTIBYTE_CHAR. */
-unsigned char *_fetch_multibyte_char_p;
-
static Lisp_Object Qchar_script_table;
\f
/* If character code C has modifier masks, reflect them to the
character code if possible. Return the resulting code. */
-int
-char_resolve_modifier_mask (int c)
+EMACS_INT
+char_resolve_modifier_mask (EMACS_INT c)
{
/* A non-ASCII character can't reflect modifier bits to the code. */
if (! ASCII_CHAR_P ((c & ~CHAR_MODIFIER_MASK)))
}
}
+
+/* Return width (columns) of C considering the buffer display table DP. */
+
+static ptrdiff_t
+char_width (int c, struct Lisp_Char_Table *dp)
+{
+ ptrdiff_t width = CHAR_WIDTH (c);
+
+ if (dp)
+ {
+ Lisp_Object disp = DISP_CHAR_VECTOR (dp, c), ch;
+ int i;
+
+ if (VECTORP (disp))
+ for (i = 0, width = 0; i < ASIZE (disp); i++)
+ {
+ ch = AREF (disp, i);
+ if (CHARACTERP (ch))
+ {
+ int w = CHAR_WIDTH (XFASTINT (ch));
+ if (INT_ADD_OVERFLOW (width, w))
+ string_overflow ();
+ width += w;
+ }
+ }
+ }
+ return width;
+}
+
+
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.
usage: (char-width CHAR) */)
(Lisp_Object ch)
{
- Lisp_Object disp;
- int c, width;
- struct Lisp_Char_Table *dp = buffer_display_table ();
+ int c;
+ ptrdiff_t width;
CHECK_CHARACTER (ch);
c = XINT (ch);
-
- /* Get the way the display table would display it. */
- disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil;
-
- if (VECTORP (disp))
- width = sanitize_char_width (ASIZE (disp));
- else
- width = CHAR_WIDTH (c);
-
+ width = char_width (c, buffer_display_table ());
return make_number (width);
}
characters and bytes of the substring in *NCHARS and *NBYTES
respectively. */
-EMACS_INT
-c_string_width (const unsigned char *str, EMACS_INT len, int precision,
- EMACS_INT *nchars, EMACS_INT *nbytes)
+ptrdiff_t
+c_string_width (const unsigned char *str, ptrdiff_t len, int precision,
+ ptrdiff_t *nchars, ptrdiff_t *nbytes)
{
- EMACS_INT i = 0, i_byte = 0;
- EMACS_INT width = 0;
+ ptrdiff_t i = 0, i_byte = 0;
+ ptrdiff_t width = 0;
struct Lisp_Char_Table *dp = buffer_display_table ();
while (i_byte < len)
{
- int bytes, thiswidth;
- Lisp_Object val;
+ int bytes;
int c = STRING_CHAR_AND_LENGTH (str + i_byte, bytes);
+ ptrdiff_t thiswidth = char_width (c, dp);
- if (dp)
- {
- val = DISP_CHAR_VECTOR (dp, c);
- if (VECTORP (val))
- thiswidth = sanitize_char_width (ASIZE (val));
- else
- thiswidth = CHAR_WIDTH (c);
- }
- else
+ if (precision <= 0)
{
- thiswidth = CHAR_WIDTH (c);
+ if (INT_ADD_OVERFLOW (width, thiswidth))
+ string_overflow ();
}
-
- if (precision > 0
- && (width + thiswidth > precision))
+ else if (precision - width < thiswidth)
{
*nchars = i;
*nbytes = i_byte;
current buffer. The width is measured by how many columns it
occupies on the screen. */
-EMACS_INT
-strwidth (const char *str, EMACS_INT len)
+ptrdiff_t
+strwidth (const char *str, ptrdiff_t len)
{
return c_string_width ((const unsigned char *) str, len, -1, NULL, NULL);
}
PRECISION, and set number of characters and bytes of the substring
in *NCHARS and *NBYTES respectively. */
-EMACS_INT
-lisp_string_width (Lisp_Object string, EMACS_INT precision,
- EMACS_INT *nchars, EMACS_INT *nbytes)
+ptrdiff_t
+lisp_string_width (Lisp_Object string, ptrdiff_t precision,
+ ptrdiff_t *nchars, ptrdiff_t *nbytes)
{
- EMACS_INT len = SCHARS (string);
+ ptrdiff_t 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);
- EMACS_INT i = 0, i_byte = 0;
- EMACS_INT width = 0;
+ ptrdiff_t i = 0, i_byte = 0;
+ ptrdiff_t width = 0;
struct Lisp_Char_Table *dp = buffer_display_table ();
while (i < len)
{
- EMACS_INT chars, bytes, thiswidth;
+ ptrdiff_t chars, bytes, thiswidth;
Lisp_Object val;
ptrdiff_t cmp_id;
- EMACS_INT ignore, end;
+ ptrdiff_t ignore, end;
if (find_composition (i, -1, &ignore, &end, &val, string)
&& ((cmp_id = get_composition_id (i, i_byte, end - i, val, string))
else
c = str[i_byte], bytes = 1;
chars = 1;
- if (dp)
- {
- val = DISP_CHAR_VECTOR (dp, c);
- if (VECTORP (val))
- thiswidth = sanitize_char_width (ASIZE (val));
- else
- thiswidth = CHAR_WIDTH (c);
- }
- else
- {
- thiswidth = CHAR_WIDTH (c);
- }
+ thiswidth = char_width (c, dp);
}
if (precision <= 0)
However, if the current buffer has enable-multibyte-characters =
nil, we treat each byte as a character. */
-EMACS_INT
-chars_in_text (const unsigned char *ptr, EMACS_INT nbytes)
+ptrdiff_t
+chars_in_text (const unsigned char *ptr, ptrdiff_t nbytes)
{
/* current_buffer is null at early stages of Emacs initialization. */
if (current_buffer == 0
sequences while assuming that there's no invalid sequence. It
ignores enable-multibyte-characters. */
-EMACS_INT
-multibyte_chars_in_text (const unsigned char *ptr, EMACS_INT nbytes)
+ptrdiff_t
+multibyte_chars_in_text (const unsigned char *ptr, ptrdiff_t nbytes)
{
const unsigned char *endp = ptr + nbytes;
- EMACS_INT chars = 0;
+ ptrdiff_t chars = 0;
while (ptr < endp)
{
- EMACS_INT len = MULTIBYTE_LENGTH (ptr, endp);
+ int len = MULTIBYTE_LENGTH (ptr, endp);
if (len == 0)
abort ();
represented by 2-byte in a multibyte text. */
void
-parse_str_as_multibyte (const unsigned char *str, EMACS_INT len,
- EMACS_INT *nchars, EMACS_INT *nbytes)
+parse_str_as_multibyte (const unsigned char *str, ptrdiff_t len,
+ ptrdiff_t *nchars, ptrdiff_t *nbytes)
{
const unsigned char *endp = str + len;
- EMACS_INT n, chars = 0, bytes = 0;
+ int n;
+ ptrdiff_t chars = 0, bytes = 0;
if (len >= MAX_MULTIBYTE_LENGTH)
{
area and that is enough. Return the number of bytes of the
resulting text. */
-EMACS_INT
-str_as_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT nbytes,
- EMACS_INT *nchars)
+ptrdiff_t
+str_as_multibyte (unsigned char *str, ptrdiff_t len, ptrdiff_t nbytes,
+ ptrdiff_t *nchars)
{
unsigned char *p = str, *endp = str + nbytes;
unsigned char *to;
- EMACS_INT chars = 0;
+ ptrdiff_t chars = 0;
int n;
if (nbytes >= MAX_MULTIBYTE_LENGTH)
bytes it may occupy when converted to multibyte string by
`str_to_multibyte'. */
-EMACS_INT
-count_size_as_multibyte (const unsigned char *str, EMACS_INT len)
+ptrdiff_t
+count_size_as_multibyte (const unsigned char *str, ptrdiff_t len)
{
const unsigned char *endp = str + len;
- EMACS_INT bytes;
+ ptrdiff_t bytes;
for (bytes = 0; str < endp; str++)
{
that we can use LEN bytes at STR as a work area and that is
enough. */
-EMACS_INT
-str_to_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT bytes)
+ptrdiff_t
+str_to_multibyte (unsigned char *str, ptrdiff_t len, ptrdiff_t bytes)
{
unsigned char *p = str, *endp = str + bytes;
unsigned char *to;
actually converts characters in the range 0x80..0xFF to
unibyte. */
-EMACS_INT
-str_as_unibyte (unsigned char *str, EMACS_INT bytes)
+ptrdiff_t
+str_as_unibyte (unsigned char *str, ptrdiff_t bytes)
{
const unsigned char *p = str, *endp = str + bytes;
unsigned char *to;
of that character code.
Note: Currently the arg ACCEPT_LATIN_1 is not used. */
-EMACS_INT
-str_to_unibyte (const unsigned char *src, unsigned char *dst, EMACS_INT chars, int accept_latin_1)
+ptrdiff_t
+str_to_unibyte (const unsigned char *src, unsigned char *dst, ptrdiff_t chars, int accept_latin_1)
{
- EMACS_INT i;
+ ptrdiff_t i;
for (i = 0; i < chars; i++)
{
}
-static EMACS_INT
+static ptrdiff_t
string_count_byte8 (Lisp_Object string)
{
int multibyte = STRING_MULTIBYTE (string);
- EMACS_INT nbytes = SBYTES (string);
+ ptrdiff_t nbytes = SBYTES (string);
unsigned char *p = SDATA (string);
unsigned char *pend = p + nbytes;
- EMACS_INT count = 0;
+ ptrdiff_t count = 0;
int c, len;
if (multibyte)
Lisp_Object
string_escape_byte8 (Lisp_Object string)
{
- EMACS_INT nchars = SCHARS (string);
- EMACS_INT nbytes = SBYTES (string);
+ ptrdiff_t nchars = SCHARS (string);
+ ptrdiff_t nbytes = SBYTES (string);
int multibyte = STRING_MULTIBYTE (string);
- EMACS_INT byte8_count;
+ ptrdiff_t byte8_count;
const unsigned char *src, *src_end;
unsigned char *dst;
Lisp_Object val;
{
c = STRING_CHAR_ADVANCE (src);
c = CHAR_TO_BYTE8 (c);
- sprintf ((char *) dst, "\\%03o", c);
- dst += 4;
+ dst += sprintf ((char *) dst, "\\%03o", c);
}
else
while (len--) *dst++ = *src++;
{
c = *src++;
if (c >= 0x80)
- {
- sprintf ((char *) dst, "\\%03o", c);
- dst += 4;
- }
+ dst += sprintf ((char *) dst, "\\%03o", c);
else
*dst++ = c;
}
(ptrdiff_t n, Lisp_Object *args)
{
ptrdiff_t i;
- int c;
- unsigned char *buf, *p;
Lisp_Object str;
USE_SAFE_ALLOCA;
-
- SAFE_ALLOCA (buf, unsigned char *, n);
- p = buf;
+ unsigned char *buf = SAFE_ALLOCA (n);
+ unsigned char *p = buf;
for (i = 0; i < n; i++)
{
- CHECK_NATNUM (args[i]);
- c = XFASTINT (args[i]);
- if (c >= 256)
- args_out_of_range_3 (args[i], make_number (0), make_number (255));
- *p++ = c;
+ CHECK_RANGED_INTEGER (args[i], 0, 255);
+ *p++ = XINT (args[i]);
}
str = make_string_from_bytes ((char *) buf, n, p - buf);
usage: (char-resolve-modifiers CHAR) */)
(Lisp_Object character)
{
- int c;
+ EMACS_INT c;
CHECK_NUMBER (character);
c = XINT (character);
(Lisp_Object position, Lisp_Object string)
{
int c;
- EMACS_INT pos;
+ ptrdiff_t pos;
unsigned char *p;
if (NILP (string))
return make_number (c);
}
-
-void
-init_character_once (void)
-{
-}
-
#ifdef emacs
void