[bpt/emacs.git] / src / character.h

/* Header for multibyte character handler.
   Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
   Licensed to the Free Software Foundation.
   Copyright (C) 2001, 2002
     National Institute of Advanced Industrial Science and Technology (AIST)
     Registration Number H13PRO009

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 2, or (at your option)
any later version.

GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef EMACS_CHARACTER_H
#define EMACS_CHARACTER_H

/* character code	1st byte   byte sequence
   --------------	--------   -------------
        0-7F		00..7F	   0xxxxxxx
       80-7FF		C2..DF	   110xxxxx 10xxxxxx
      800-FFFF		E0..EF	   1110xxxx 10xxxxxx 10xxxxxx
    10000-1FFFFF	F0..F7	   11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
   200000-3FFF7F	F8	   11111000 1000xxxx 10xxxxxx 10xxxxxx 10xxxxxx
      invalid		F9..FF

   raw-8-bit
   3FFF80-3FFFFF	C0..C1	   1100000x 10xxxxxx
*/

/* Maximum character code ((1 << CHARACTERBITS) - 1).  */
#define MAX_CHAR  0x3FFFFF

/* Maximum Unicode character code.  */
#define MAX_UNICODE_CHAR 0x10FFFF

/* Maximum N-byte character codes.  */
#define MAX_1_BYTE_CHAR 0x7F
#define MAX_2_BYTE_CHAR 0x7FF
#define MAX_3_BYTE_CHAR 0xFFFF
#define MAX_4_BYTE_CHAR 0x1FFFFF
#define MAX_5_BYTE_CHAR 0x3FFF7F

/* Nonzero iff C is a character that corresponds to a raw 8-bit
   byte.  */
#define CHAR_BYTE8_P(c) ((c) > MAX_5_BYTE_CHAR)

/* Return the character code for raw 8-bit byte BYTE.  */
#define BYTE8_TO_CHAR(byte) ((byte) + 0x3FFF00)

/* Return the raw 8-bit byte for character C.  */
#define CHAR_TO_BYTE8(c)	\
  (CHAR_BYTE8_P (c)		\
   ? (c) - 0x3FFF00		\
   : multibyte_char_to_unibyte (c, Qnil))

/* Nonzero iff BYTE is the 1st byte of a multibyte form of a character
   that corresponds to a raw 8-bit byte.  */
#define CHAR_BYTE8_HEAD_P(byte) ((byte) == 0xC0 || (byte) == 0xC1)

/* If C is not ASCII, make it unibyte. */

#define MAKE_CHAR_UNIBYTE(c)			\
  if (! ASCII_CHAR_P (c))			\
    c = multibyte_char_to_unibyte (c, Qnil);	\
  else


/* If C is not ASCII, make it multibyte. */

#define MAKE_CHAR_MULTIBYTE(c)		\
  if (! ASCII_CHAR_P (c))		\
    c = unibyte_char_to_multibyte (c);	\
  else


/* This is the maximum byte length of multibyte form.  */
#define MAX_MULTIBYTE_LENGTH 5

/* Return a Lisp character whose character code is C. */
#define make_char(c) make_number (c)

/* Nonzero iff C is an ASCII byte.  */
#define ASCII_BYTE_P(c) ((unsigned) (c) < 0x80)

/* Nonzero iff X is a character.  */
#define CHARACTERP(x) (NATNUMP (x) && XFASTINT (x) <= MAX_CHAR)

/* Nonzero iff C is valid as a character code.  GENERICP is not used
   now.  */
#define CHAR_VALID_P(c, genericp) ((unsigned) (c) <= MAX_CHAR)

/* Check if Lisp object X is a character or not.  */
#define CHECK_CHARACTER(x)						\
  do {									\
    if (! CHARACTERP(x)) x = wrong_type_argument (Qcharacterp, (x));	\
  } while (0)

/* Nonzero iff C is an ASCII character.  */
#define ASCII_CHAR_P(c) ((unsigned) (c) < 0x80)

/* Nonzero iff C is a character of code less than 0x100.  */
#define SINGLE_BYTE_CHAR_P(c) ((unsigned) (c) < 0x100)

/* Nonzero if character C has a printable glyph.  */
#define CHAR_PRINTABLE_P(c)	\
  (((c) >= 32 && ((c) < 127)	\
    || ! NILP (CHAR_TABLE_REF (Vprintable_chars, (c)))))

/* Return byte length of multibyte form for character C.  */
#define CHAR_BYTES(c)			\
  ( (c) <= MAX_1_BYTE_CHAR ? 1		\
    : (c) <= MAX_2_BYTE_CHAR ? 2	\
    : (c) <= MAX_3_BYTE_CHAR ? 3	\
    : (c) <= MAX_4_BYTE_CHAR ? 4	\
    : (c) <= MAX_5_BYTE_CHAR ? 5	\
    : 2)

/* Store multibyte form of the character C in P.  The caller should
   allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
   Returns the length of the multibyte form.  */

#define CHAR_STRING(c, p)			\
  ((unsigned) (c) <= MAX_1_BYTE_CHAR		\
   ? ((p)[0] = (c),				\
      1)					\
   : (unsigned) (c) <= MAX_2_BYTE_CHAR		\
   ? ((p)[0] = (0xC0 | ((c) >> 6)),		\
      (p)[1] = (0x80 | ((c) & 0x3F)),		\
      2)					\
   : (unsigned) (c) <= MAX_3_BYTE_CHAR		\
   ? ((p)[0] = (0xE0 | ((c) >> 12)),		\
      (p)[1] = (0x80 | (((c) >> 6) & 0x3F)),	\
      (p)[2] = (0x80 | ((c) & 0x3F)),		\
      3)					\
   : (unsigned) (c) <= MAX_5_BYTE_CHAR		\
   ? char_string_with_unification (c, p)	\
   : ((p)[0] = (0xC0 | (((c) >> 6) & 0x01)),	\
      (p)[1] = (0x80 | ((c) & 0x3F)),		\
      2))

/* Store multibyte form of eight-bit char B in P.  The caller should
   allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
   Returns the length of the multibyte form.  */

#define BYTE8_STRING(b, p)			\
  ((p)[0] = (0xC0 | (((b) >> 6) & 0x01)),	\
   (p)[1] = (0x80 | ((c) & 0x3F)),		\
   2)


/* Store multibyte form of the character C in P.  The caller should
   allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
   And, advance P to the end of the multibyte form.  */

#define CHAR_STRING_ADVANCE(c, p)			\
  do {							\
    if ((c) <= MAX_1_BYTE_CHAR)				\
      *(p)++ = (c);					\
    else if ((c) <= MAX_2_BYTE_CHAR)			\
      *(p)++ = (0xC0 | ((c) >> 6)),			\
	*(p)++ = (0x80 | ((c) & 0x3F));			\
    else if ((c) <= MAX_3_BYTE_CHAR)			\
      *(p)++ = (0xE0 | ((c) >> 12)),			\
	*(p)++ = (0x80 | (((c) >> 6) & 0x3F)),		\
	*(p)++ = (0x80 | ((c) & 0x3F));			\
    else if ((c) <= MAX_5_BYTE_CHAR)			\
      (p) += char_string_with_unification ((c), (p));	\
    else						\
      *(p)++ = (0xC0 | (((c) >> 6) & 0x01)),		\
	*(p)++ = (0x80 | ((c) & 0x3F));			\
  } while (0)

/* Nonzero iff BYTE starts a non-ASCII character in a multibyte
   form.  */
#define LEADING_CODE_P(byte) (((byte) & 0xC0) == 0xC0)

/* Nonzero iff BYTE is a trailing code of a non-ASCII character in a
   multibyte form.  */
#define TRAILING_CODE_P(byte) (((byte) & 0xC0) == 0x80)

/* Nonzero iff BYTE starts a character in a multibyte form.
   This is equivalent to:
	(ASCII_BYTE_P (byte) || LEADING_CODE_P (byte))  */
#define CHAR_HEAD_P(byte) (((byte) & 0xC0) != 0x80)

/* Just kept for backward compatibility.  This macro will be removed
   in the future.  */
#define BASE_LEADING_CODE_P LEADING_CODE_P

/* How many bytes a character that starts with BYTE occupies in a
   multibyte form.  */
#define BYTES_BY_CHAR_HEAD(byte)	\
  (!((byte) & 0x80) ? 1			\
   : !((byte) & 0x20) ? 2		\
   : !((byte) & 0x10) ? 3		\
   : !((byte) & 0x08) ? 4		\
   : 5)


/* Return the length of the multi-byte form at string STR of length
   LEN while assuming that STR points a valid multi-byte form.  As
   this macro isn't necessary anymore, all callers will be changed to
   use BYTES_BY_CHAR_HEAD directly in the future.  */

#define MULTIBYTE_FORM_LENGTH(str, len)		\
  BYTES_BY_CHAR_HEAD (*(str))

/* Parse multibyte string STR of length LENGTH and set BYTES to the
   byte length of a character at STR while assuming that STR points a
   valid multibyte form.  As this macro isn't necessary anymore, all
   callers will be changed to use BYTES_BY_CHAR_HEAD directly in the
   future.  */

#define PARSE_MULTIBYTE_SEQ(str, length, bytes)	\
  (bytes) = BYTES_BY_CHAR_HEAD (*(str))

/* The byte length of multibyte form at unibyte string P ending at
   PEND.  If STR doesn't point a valid multibyte form, return 0.  */

#define MULTIBYTE_LENGTH(p, pend)				\
  (p >= pend ? 0						\
   : !((p)[0] & 0x80) ? 1					\
   : ((p + 1 >= pend) || (((p)[1] & 0xC0) != 0x80)) ? 0		\
   : ((p)[0] & 0xE0) == 0xC0 ? 2				\
   : ((p + 2 >= pend) || (((p)[2] & 0xC0) != 0x80)) ? 0		\
   : ((p)[0] & 0xF0) == 0xE0 ? 3				\
   : ((p + 3 >= pend) || (((p)[3] & 0xC0) != 0x80)) ? 0		\
   : ((p)[0] & 0xF8) == 0xF0 ? 4				\
   : ((p + 4 >= pend) || (((p)[4] & 0xC0) != 0x80)) ? 0		\
   : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5		\
   : 0)


/* Like MULTIBYTE_LENGTH but don't check the ending address.  */

#define MULTIBYTE_LENGTH_NO_CHECK(p)			\
  (!((p)[0] & 0x80) ? 1					\
   : ((p)[1] & 0xC0) != 0x80 ? 0			\
   : ((p)[0] & 0xE0) == 0xC0 ? 2			\
   : ((p)[2] & 0xC0) != 0x80 ? 0			\
   : ((p)[0] & 0xF0) == 0xE0 ? 3			\
   : ((p)[3] & 0xC0) != 0x80 ? 0			\
   : ((p)[0] & 0xF8) == 0xF0 ? 4			\
   : ((p)[4] & 0xC0) != 0x80 ? 0			\
   : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5	\
   : 0)


/* Return the character code of character whose multibyte form is at
   P.  The argument LEN is ignored.  It will be removed in the
   future.  */

#define STRING_CHAR(p, len)					\
  (!((p)[0] & 0x80)						\
   ? (p)[0]							\
   : ! ((p)[0] & 0x20)						\
   ? (((((p)[0] & 0x1F) << 6)					\
       | ((p)[1] & 0x3F))					\
      + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0))	\
   : ! ((p)[0] & 0x10)						\
   ? ((((p)[0] & 0x0F) << 12)					\
      | (((p)[1] & 0x3F) << 6)					\
      | ((p)[2] & 0x3F))					\
   : string_char_with_unification ((p), NULL, NULL))


/* Like STRING_CHAR but set ACTUAL_LEN to the length of multibyte
   form.  The argument LEN is ignored.  It will be removed in the
   future.  */

#define STRING_CHAR_AND_LENGTH(p, len, actual_len)		\
  (!((p)[0] & 0x80)						\
   ? ((actual_len) = 1, (p)[0])					\
   : ! ((p)[0] & 0x20)						\
   ? ((actual_len) = 2,						\
      (((((p)[0] & 0x1F) << 6)					\
	| ((p)[1] & 0x3F))					\
       + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0)))	\
   : ! ((p)[0] & 0x10)						\
   ? ((actual_len) = 3,						\
      ((((p)[0] & 0x0F) << 12)					\
       | (((p)[1] & 0x3F) << 6)					\
       | ((p)[2] & 0x3F)))					\
   : string_char_with_unification ((p), NULL, &actual_len))


/* Like STRING_CHAR but advacen P to the end of multibyte form.  */

#define STRING_CHAR_ADVANCE(p)					\
  (!((p)[0] & 0x80)						\
   ? *(p)++							\
   : ! ((p)[0] & 0x20)						\
   ? ((p) += 2,							\
      ((((p)[-2] & 0x1F) << 6)					\
       | ((p)[-1] & 0x3F)					\
       | (((unsigned char) (p)[-2]) < 0xC2 ? 0x3FFF80 : 0)))	\
   : ! ((p)[0] & 0x10)						\
   ? ((p) += 3,							\
      ((((p)[-3] & 0x0F) << 12)					\
       | (((p)[-2] & 0x3F) << 6)				\
       | ((p)[-1] & 0x3F)))					\
   : string_char_with_unification ((p), &(p), NULL))


/* Fetch the "next" character from Lisp string STRING at byte position
   BYTEIDX, character position CHARIDX.  Store it into OUTPUT.

   All the args must be side-effect-free.
   BYTEIDX and CHARIDX must be lvalues;
   we increment them past the character fetched.  */

#define FETCH_STRING_CHAR_ADVANCE(OUTPUT, STRING, CHARIDX, BYTEIDX)	\
  if (1)								\
    {									\
      CHARIDX++;							\
      if (STRING_MULTIBYTE (STRING))					\
	{								\
	  unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX];	\
	  int len;							\
									\
	  OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len);		\
	  BYTEIDX += len;						\
	}								\
      else								\
	OUTPUT = XSTRING (STRING)->data[BYTEIDX++];			\
    }									\
  else


/* Like FETCH_STRING_CHAR_ADVANCE but assumes STRING is multibyte.  */

#define FETCH_STRING_CHAR_ADVANCE_NO_CHECK(OUTPUT, STRING, CHARIDX, BYTEIDX) \
  if (1)								     \
    {									     \
      unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX];		     \
      int len;								     \
									     \
      OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len);			     \
      BYTEIDX += len;							     \
      CHARIDX++;							     \
    }									     \
  else


/* Like FETCH_STRING_CHAR_ADVANCE but fetch character from the current
   buffer.  */

#define FETCH_CHAR_ADVANCE(OUTPUT, CHARIDX, BYTEIDX)		\
  if (1)							\
    {								\
      CHARIDX++;						\
      if (!NILP (current_buffer->enable_multibyte_characters))	\
	{							\
	  unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX);		\
	  int len;						\
								\
	  OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len);		\
	  BYTEIDX += len;					\
	}							\
      else							\
	{							\
	  OUTPUT = *(BYTE_POS_ADDR (BYTEIDX));			\
	  BYTEIDX++;						\
	}							\
    }								\
  else


/* Like FETCH_CHAR_ADVANCE but assumes STRING is multibyte.  */

#define FETCH_CHAR_ADVANCE_NO_CHECK(OUTPUT, CHARIDX, BYTEIDX)	\
  if (1)							\
    {								\
      unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX);		\
      int len;							\
								\
      OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len);		\
      BYTEIDX += len;						\
      CHARIDX++;						\
    }								\
  else


/* Increase the buffer byte position POS_BYTE of the current buffer to
   the next character boundary.  No range checking of POS.  */

#define INC_POS(pos_byte)				\
  do {							\
    unsigned char *p = BYTE_POS_ADDR (pos_byte);	\
    pos_byte += BYTES_BY_CHAR_HEAD (*p);		\
  } while (0)


/* Decrease the buffer byte position POS_BYTE of the current buffer to
   the previous character boundary.  No range checking of POS.  */

#define DEC_POS(pos_byte)			\
  do {						\
    unsigned char *p;				\
    						\
    pos_byte--;					\
    if (pos_byte < GPT_BYTE)			\
      p = BEG_ADDR + pos_byte - 1;		\
    else					\
      p = BEG_ADDR + GAP_SIZE + pos_byte - 1;	\
    while (!CHAR_HEAD_P (*p))			\
      {						\
	p--;					\
	pos_byte--;				\
      }						\
  } while (0)

/* Increment both CHARPOS and BYTEPOS, each in the appropriate way.  */

#define INC_BOTH(charpos, bytepos)				\
  do								\
    {								\
      (charpos)++;						\
      if (NILP (current_buffer->enable_multibyte_characters))	\
	(bytepos)++;						\
      else							\
	INC_POS ((bytepos));					\
    }								\
  while (0)


/* Decrement both CHARPOS and BYTEPOS, each in the appropriate way.  */

#define DEC_BOTH(charpos, bytepos)				\
  do								\
    {								\
      (charpos)--;						\
      if (NILP (current_buffer->enable_multibyte_characters))	\
	(bytepos)--;						\
      else							\
	DEC_POS ((bytepos));					\
    }								\
  while (0)


/* Increase the buffer byte position POS_BYTE of the current buffer to
   the next character boundary.  This macro relies on the fact that
   *GPT_ADDR and *Z_ADDR are always accessible and the values are
   '\0'.  No range checking of POS_BYTE.  */

#define BUF_INC_POS(buf, pos_byte)				\
  do {								\
    unsigned char *p = BUF_BYTE_ADDRESS (buf, pos_byte);	\
    pos_byte += BYTES_BY_CHAR_HEAD (*p);			\
  } while (0)


/* Decrease the buffer byte position POS_BYTE of the current buffer to
   the previous character boundary.  No range checking of POS_BYTE.  */

#define BUF_DEC_POS(buf, pos_byte)					\
  do {									\
    unsigned char *p;							\
    pos_byte--;								\
    if (pos_byte < BUF_GPT_BYTE (buf))					\
      p = BUF_BEG_ADDR (buf) + pos_byte - 1;				\
    else								\
      p = BUF_BEG_ADDR (buf) + BUF_GAP_SIZE (buf) + pos_byte - 1;	\
    while (!CHAR_HEAD_P (*p))						\
      {									\
	p--;								\
	pos_byte--;							\
      }									\
  } while (0)


#define MAYBE_UNIFY_CHAR(c)					\
  if (CHAR_TABLE_P (Vchar_unify_table))				\
    {								\
      Lisp_Object val;						\
      int unified;						\
								\
      val = CHAR_TABLE_REF (Vchar_unify_table, c);		\
      if (! NILP (val))						\
	{							\
	  if (SYMBOLP (val))					\
	    {							\
	      Funify_charset (val, Qnil, Qnil);			\
	      val = CHAR_TABLE_REF (Vchar_unify_table, c);	\
	    }							\
	  if ((unified = XINT (val)) >= 0)			\
	    c = unified;					\
	}							\
    }								\
  else


/* Return the width of ASCII character C.  The width is measured by
   how many columns occupied on the screen when displayed in the
   current buffer.  */

#define ASCII_CHAR_WIDTH(c)						\
  (c < 0x20								\
   ? (c == '\t'								\
      ? XFASTINT (current_buffer->tab_width)				\
      : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2)))	\
   : (c < 0x7f								\
      ? 1								\
      : ((NILP (current_buffer->ctl_arrow) ? 4 : 2))))

/* Return the width of character C.  The width is measured by how many
   columns occupied on the screen when displayed in the current
   buffer.  */

#define CHAR_WIDTH(c)		\
  (ASCII_CHAR_P (c)		\
   ? ASCII_CHAR_WIDTH (c)	\
   : XINT (CHAR_TABLE_REF (Vchar_width_table, c)))

extern int char_string_with_unification P_ ((int, unsigned char *));
extern int string_char_with_unification P_ ((const unsigned char *,
					     const unsigned char **, int *));

extern int translate_char P_ ((Lisp_Object, int c));
extern int char_printable_p P_ ((int c));
extern void parse_str_as_multibyte P_ ((unsigned char *, int, int *, int *));
extern int parse_str_to_multibyte P_ ((unsigned char *, int));
extern int str_as_multibyte P_ ((unsigned char *, int, int, int *));
extern int str_to_multibyte P_ ((unsigned char *, int, int));
extern int str_as_unibyte P_ ((unsigned char *, int));
extern int strwidth P_ ((unsigned char *, int));
extern int c_string_width P_ ((unsigned char *, int, int, int *, int *));
extern int lisp_string_width P_ ((Lisp_Object, int, int *, int *));

extern Lisp_Object Vprintable_chars;

extern Lisp_Object Qcharacterp, Qauto_fill_chars;
extern Lisp_Object Vtranslation_table_vector;
extern Lisp_Object Vchar_width_table;
extern Lisp_Object Vchar_direction_table;
extern Lisp_Object Vchar_unify_table;

extern Lisp_Object string_escape_byte8 P_ ((Lisp_Object));

/* Return a translation table of id number ID.  */
#define GET_TRANSLATION_TABLE(id) \
  (XCDR(XVECTOR(Vtranslation_table_vector)->contents[(id)]))

/* A char-table for characters which may invoke auto-filling.  */
extern Lisp_Object Vauto_fill_chars;

extern Lisp_Object Vchar_script_table;

/* Copy LEN bytes from FROM to TO.  This macro should be used only
   when a caller knows that LEN is short and the obvious copy loop is
   faster than calling bcopy which has some overhead.  Copying a
   multibyte sequence of a character is the typical case.  */

#define BCOPY_SHORT(from, to, len)		\
  do {						\
    int i = len;				\
    unsigned char *from_p = from, *to_p = to;	\
    while (i--) *to_p++ = *from_p++;		\
  } while (0)

#define DEFSYM(sym, name)	\
  do { (sym) = intern ((name)); staticpro (&(sym)); } while (0)

#endif /* EMACS_CHARACTER_H */
Commit	Line	Data
0168c3d8 KH	1	/* Header for multibyte character handler.
	2	Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
	3	Licensed to the Free Software Foundation.
	4	Copyright (C) 2001, 2002
	5	National Institute of Advanced Industrial Science and Technology (AIST)
	6	Registration Number H13PRO009
	7
	8	This file is part of GNU Emacs.
	9
	10	GNU Emacs is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2, or (at your option)
	13	any later version.
	14
	15	GNU Emacs is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with GNU Emacs; see the file COPYING. If not, write to
	22	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	23	Boston, MA 02111-1307, USA. */
	24
	25	#ifndef EMACS_CHARACTER_H
	26	#define EMACS_CHARACTER_H
	27
885317d8 KH	28	/* character code 1st byte byte sequence
	29	-------------- -------- -------------
	30	0-7F 00..7F 0xxxxxxx
	31	80-7FF C2..DF 110xxxxx 10xxxxxx
	32	800-FFFF E0..EF 1110xxxx 10xxxxxx 10xxxxxx
	33	10000-1FFFFF F0..F7 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
	34	200000-3FFF7F F8 11111000 1000xxxx 10xxxxxx 10xxxxxx 10xxxxxx
	35	invalid F9..FF
0168c3d8 KH	36
0168c3d8 KH	37	raw-8-bit
885317d8	38	3FFF80-3FFFFF C0..C1 1100000x 10xxxxxx
0168c3d8 KH	39	*/
0168c3d8 KH	40
885317d8	41	/* Maximum character code ((1 << CHARACTERBITS) - 1). */
0168c3d8 KH	42	#define MAX_CHAR 0x3FFFFF
0168c3d8 KH	43
885317d8	44	/* Maximum Unicode character code. */
0168c3d8 KH	45	#define MAX_UNICODE_CHAR 0x10FFFF
0168c3d8 KH	46
885317d8	47	/* Maximum N-byte character codes. */
0168c3d8 KH	48	#define MAX_1_BYTE_CHAR 0x7F
	49	#define MAX_2_BYTE_CHAR 0x7FF
	50	#define MAX_3_BYTE_CHAR 0xFFFF
	51	#define MAX_4_BYTE_CHAR 0x1FFFFF
	52	#define MAX_5_BYTE_CHAR 0x3FFF7F
	53
8bc28f69 KH	54	/* Nonzero iff C is a character that corresponds to a raw 8-bit
	55	byte. */
	56	#define CHAR_BYTE8_P(c) ((c) > MAX_5_BYTE_CHAR)
	57
885317d8	58	/* Return the character code for raw 8-bit byte BYTE. */
0168c3d8	59	#define BYTE8_TO_CHAR(byte) ((byte) + 0x3FFF00)
885317d8 KH	60
885317d8 KH	61	/* Return the raw 8-bit byte for character C. */
8bc28f69 KH	62	#define CHAR_TO_BYTE8(c) \
	63	(CHAR_BYTE8_P (c) \
	64	? (c) - 0x3FFF00 \
	65	: multibyte_char_to_unibyte (c, Qnil))
885317d8 KH	66
	67	/* Nonzero iff BYTE is the 1st byte of a multibyte form of a character
	68	that corresponds to a raw 8-bit byte. */
0168c3d8 KH	69	#define CHAR_BYTE8_HEAD_P(byte) ((byte) == 0xC0 \|\| (byte) == 0xC1)
0168c3d8 KH	70
3e411074 KH	71	/* If C is not ASCII, make it unibyte. */
	72
	73	#define MAKE_CHAR_UNIBYTE(c) \
	74	if (! ASCII_CHAR_P (c)) \
	75	c = multibyte_char_to_unibyte (c, Qnil); \
	76	else
	77
	78
	79	/* If C is not ASCII, make it multibyte. */
	80
	81	#define MAKE_CHAR_MULTIBYTE(c) \
	82	if (! ASCII_CHAR_P (c)) \
	83	c = unibyte_char_to_multibyte (c); \
	84	else
	85
	86
885317d8	87	/* This is the maximum byte length of multibyte form. */
0168c3d8 KH	88	#define MAX_MULTIBYTE_LENGTH 5
0168c3d8 KH	89
885317d8	90	/* Return a Lisp character whose character code is C. */
0168c3d8 KH	91	#define make_char(c) make_number (c)
	92
	93	/* Nonzero iff C is an ASCII byte. */
	94	#define ASCII_BYTE_P(c) ((unsigned) (c) < 0x80)
	95
	96	/* Nonzero iff X is a character. */
	97	#define CHARACTERP(x) (NATNUMP (x) && XFASTINT (x) <= MAX_CHAR)
	98
f65c6d94	99	/* Nonzero iff C is valid as a character code. GENERICP is not used
885317d8 KH	100	now. */
885317d8 KH	101	#define CHAR_VALID_P(c, genericp) ((unsigned) (c) <= MAX_CHAR)
0168c3d8 KH	102
	103	/* Check if Lisp object X is a character or not. */
	104	#define CHECK_CHARACTER(x) \
	105	do { \
	106	if (! CHARACTERP(x)) x = wrong_type_argument (Qcharacterp, (x)); \
	107	} while (0)
	108
	109	/* Nonzero iff C is an ASCII character. */
	110	#define ASCII_CHAR_P(c) ((unsigned) (c) < 0x80)
	111
	112	/* Nonzero iff C is a character of code less than 0x100. */
	113	#define SINGLE_BYTE_CHAR_P(c) ((unsigned) (c) < 0x100)
	114
	115	/* Nonzero if character C has a printable glyph. */
	116	#define CHAR_PRINTABLE_P(c) \
	117	(((c) >= 32 && ((c) < 127) \
	118	\|\| ! NILP (CHAR_TABLE_REF (Vprintable_chars, (c)))))
	119
885317d8	120	/* Return byte length of multibyte form for character C. */
0168c3d8 KH	121	#define CHAR_BYTES(c) \
	122	( (c) <= MAX_1_BYTE_CHAR ? 1 \
	123	: (c) <= MAX_2_BYTE_CHAR ? 2 \
	124	: (c) <= MAX_3_BYTE_CHAR ? 3 \
	125	: (c) <= MAX_4_BYTE_CHAR ? 4 \
	126	: (c) <= MAX_5_BYTE_CHAR ? 5 \
	127	: 2)
	128
885317d8 KH	129	/* Store multibyte form of the character C in P. The caller should
	130	allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
	131	Returns the length of the multibyte form. */
0168c3d8 KH	132
	133	#define CHAR_STRING(c, p) \
	134	((unsigned) (c) <= MAX_1_BYTE_CHAR \
	135	? ((p)[0] = (c), \
	136	1) \
	137	: (unsigned) (c) <= MAX_2_BYTE_CHAR \
	138	? ((p)[0] = (0xC0 \| ((c) >> 6)), \
	139	(p)[1] = (0x80 \| ((c) & 0x3F)), \
	140	2) \
	141	: (unsigned) (c) <= MAX_3_BYTE_CHAR \
	142	? ((p)[0] = (0xE0 \| ((c) >> 12)), \
	143	(p)[1] = (0x80 \| (((c) >> 6) & 0x3F)), \
	144	(p)[2] = (0x80 \| ((c) & 0x3F)), \
	145	3) \
	146	: (unsigned) (c) <= MAX_5_BYTE_CHAR \
885317d8	147	? char_string_with_unification (c, p) \
0168c3d8 KH	148	: ((p)[0] = (0xC0 \| (((c) >> 6) & 0x01)), \
	149	(p)[1] = (0x80 \| ((c) & 0x3F)), \
	150	2))
	151
1106ea2b KH	152	/* Store multibyte form of eight-bit char B in P. The caller should
	153	allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
	154	Returns the length of the multibyte form. */
	155
	156	#define BYTE8_STRING(b, p) \
	157	((p)[0] = (0xC0 \| (((b) >> 6) & 0x01)), \
	158	(p)[1] = (0x80 \| ((c) & 0x3F)), \
	159	2)
	160
0168c3d8	161
885317d8 KH	162	/* Store multibyte form of the character C in P. The caller should
	163	allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
	164	And, advance P to the end of the multibyte form. */
0168c3d8	165
885317d8 KH	166	#define CHAR_STRING_ADVANCE(c, p) \
	167	do { \
	168	if ((c) <= MAX_1_BYTE_CHAR) \
	169	*(p)++ = (c); \
	170	else if ((c) <= MAX_2_BYTE_CHAR) \
	171	*(p)++ = (0xC0 \| ((c) >> 6)), \
	172	*(p)++ = (0x80 \| ((c) & 0x3F)); \
	173	else if ((c) <= MAX_3_BYTE_CHAR) \
	174	*(p)++ = (0xE0 \| ((c) >> 12)), \
	175	*(p)++ = (0x80 \| (((c) >> 6) & 0x3F)), \
	176	*(p)++ = (0x80 \| ((c) & 0x3F)); \
	177	else if ((c) <= MAX_5_BYTE_CHAR) \
	178	(p) += char_string_with_unification ((c), (p)); \
	179	else \
	180	*(p)++ = (0xC0 \| (((c) >> 6) & 0x01)), \
	181	*(p)++ = (0x80 \| ((c) & 0x3F)); \
	182	} while (0)
0168c3d8 KH	183
	184	/* Nonzero iff BYTE starts a non-ASCII character in a multibyte
	185	form. */
	186	#define LEADING_CODE_P(byte) (((byte) & 0xC0) == 0xC0)
	187
b5c7dbe6 KH	188	/* Nonzero iff BYTE is a trailing code of a non-ASCII character in a
	189	multibyte form. */
	190	#define TRAILING_CODE_P(byte) (((byte) & 0xC0) == 0x80)
	191
885317d8 KH	192	/* Nonzero iff BYTE starts a character in a multibyte form.
	193	This is equivalent to:
	194	(ASCII_BYTE_P (byte) \|\| LEADING_CODE_P (byte)) */
	195	#define CHAR_HEAD_P(byte) (((byte) & 0xC0) != 0x80)
	196
0168c3d8 KH	197	/* Just kept for backward compatibility. This macro will be removed
	198	in the future. */
	199	#define BASE_LEADING_CODE_P LEADING_CODE_P
	200
	201	/* How many bytes a character that starts with BYTE occupies in a
	202	multibyte form. */
	203	#define BYTES_BY_CHAR_HEAD(byte) \
	204	(!((byte) & 0x80) ? 1 \
	205	: !((byte) & 0x20) ? 2 \
	206	: !((byte) & 0x10) ? 3 \
	207	: !((byte) & 0x08) ? 4 \
	208	: 5)
	209
	210
	211	/* Return the length of the multi-byte form at string STR of length
	212	LEN while assuming that STR points a valid multi-byte form. As
	213	this macro isn't necessary anymore, all callers will be changed to
	214	use BYTES_BY_CHAR_HEAD directly in the future. */
	215
	216	#define MULTIBYTE_FORM_LENGTH(str, len) \
	217	BYTES_BY_CHAR_HEAD (*(str))
	218
	219	/* Parse multibyte string STR of length LENGTH and set BYTES to the
	220	byte length of a character at STR while assuming that STR points a
	221	valid multibyte form. As this macro isn't necessary anymore, all
	222	callers will be changed to use BYTES_BY_CHAR_HEAD directly in the
	223	future. */
	224
	225	#define PARSE_MULTIBYTE_SEQ(str, length, bytes) \
	226	(bytes) = BYTES_BY_CHAR_HEAD (*(str))
	227
	228	/* The byte length of multibyte form at unibyte string P ending at
	229	PEND. If STR doesn't point a valid multibyte form, return 0. */
	230
	231	#define MULTIBYTE_LENGTH(p, pend) \
	232	(p >= pend ? 0 \
	233	: !((p)[0] & 0x80) ? 1 \
	234	: ((p + 1 >= pend) \|\| (((p)[1] & 0xC0) != 0x80)) ? 0 \
	235	: ((p)[0] & 0xE0) == 0xC0 ? 2 \
	236	: ((p + 2 >= pend) \|\| (((p)[2] & 0xC0) != 0x80)) ? 0 \
	237	: ((p)[0] & 0xF0) == 0xE0 ? 3 \
	238	: ((p + 3 >= pend) \|\| (((p)[3] & 0xC0) != 0x80)) ? 0 \
	239	: ((p)[0] & 0xF8) == 0xF0 ? 4 \
	240	: ((p + 4 >= pend) \|\| (((p)[4] & 0xC0) != 0x80)) ? 0 \
	241	: (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
	242	: 0)
	243
	244
	245	/* Like MULTIBYTE_LENGTH but don't check the ending address. */
	246
	247	#define MULTIBYTE_LENGTH_NO_CHECK(p) \
	248	(!((p)[0] & 0x80) ? 1 \
	249	: ((p)[1] & 0xC0) != 0x80 ? 0 \
	250	: ((p)[0] & 0xE0) == 0xC0 ? 2 \
	251	: ((p)[2] & 0xC0) != 0x80 ? 0 \
	252	: ((p)[0] & 0xF0) == 0xE0 ? 3 \
	253	: ((p)[3] & 0xC0) != 0x80 ? 0 \
	254	: ((p)[0] & 0xF8) == 0xF0 ? 4 \
	255	: ((p)[4] & 0xC0) != 0x80 ? 0 \
	256	: (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
	257	: 0)
	258
	259
	260	/* Return the character code of character whose multibyte form is at
261	P. The argument LEN is ignored. It will be removed in the
262	future. */
263
264	#define STRING_CHAR(p, len) \
265	(!((p)[0] & 0x80) \
266	? (p)[0] \
267	: ! ((p)[0] & 0x20) \
268	? (((((p)[0] & 0x1F) << 6) \
269	\| ((p)[1] & 0x3F)) \
270	+ (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0)) \
271	: ! ((p)[0] & 0x10) \
272	? ((((p)[0] & 0x0F) << 12) \
273	\| (((p)[1] & 0x3F) << 6) \
274	\| ((p)[2] & 0x3F)) \
885317d8	275	: string_char_with_unification ((p), NULL, NULL))
0168c3d8 KH	276
	277
	278	/* Like STRING_CHAR but set ACTUAL_LEN to the length of multibyte
	279	form. The argument LEN is ignored. It will be removed in the
	280	future. */
	281
	282	#define STRING_CHAR_AND_LENGTH(p, len, actual_len) \
	283	(!((p)[0] & 0x80) \
	284	? ((actual_len) = 1, (p)[0]) \
	285	: ! ((p)[0] & 0x20) \
	286	? ((actual_len) = 2, \
	287	(((((p)[0] & 0x1F) << 6) \
	288	\| ((p)[1] & 0x3F)) \
	289	+ (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0))) \
	290	: ! ((p)[0] & 0x10) \
	291	? ((actual_len) = 3, \
	292	((((p)[0] & 0x0F) << 12) \
	293	\| (((p)[1] & 0x3F) << 6) \
	294	\| ((p)[2] & 0x3F))) \
885317d8	295	: string_char_with_unification ((p), NULL, &actual_len))
0168c3d8 KH	296
	297
	298	/* Like STRING_CHAR but advacen P to the end of multibyte form. */
	299
	300	#define STRING_CHAR_ADVANCE(p) \
	301	(!((p)[0] & 0x80) \
	302	? *(p)++ \
	303	: ! ((p)[0] & 0x20) \
	304	? ((p) += 2, \
	305	((((p)[-2] & 0x1F) << 6) \
	306	\| ((p)[-1] & 0x3F) \
	307	\| (((unsigned char) (p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \
	308	: ! ((p)[0] & 0x10) \
	309	? ((p) += 3, \
	310	((((p)[-3] & 0x0F) << 12) \
	311	\| (((p)[-2] & 0x3F) << 6) \
	312	\| ((p)[-1] & 0x3F))) \
885317d8	313	: string_char_with_unification ((p), &(p), NULL))
0168c3d8 KH	314
	315
	316	/* Fetch the "next" character from Lisp string STRING at byte position
	317	BYTEIDX, character position CHARIDX. Store it into OUTPUT.
	318
	319	All the args must be side-effect-free.
	320	BYTEIDX and CHARIDX must be lvalues;
	321	we increment them past the character fetched. */
	322
	323	#define FETCH_STRING_CHAR_ADVANCE(OUTPUT, STRING, CHARIDX, BYTEIDX) \
	324	if (1) \
	325	{ \
	326	CHARIDX++; \
	327	if (STRING_MULTIBYTE (STRING)) \
	328	{ \
	329	unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX]; \
	330	int len; \
	331	\
	332	OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len); \
	333	BYTEIDX += len; \
	334	} \
	335	else \
	336	OUTPUT = XSTRING (STRING)->data[BYTEIDX++]; \
	337	} \
	338	else
	339
	340
	341	/* Like FETCH_STRING_CHAR_ADVANCE but assumes STRING is multibyte. */
	342
	343	#define FETCH_STRING_CHAR_ADVANCE_NO_CHECK(OUTPUT, STRING, CHARIDX, BYTEIDX) \
	344	if (1) \
	345	{ \
	346	unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX]; \
	347	int len; \
	348	\
	349	OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len); \
	350	BYTEIDX += len; \
	351	CHARIDX++; \
	352	} \
	353	else
	354
	355
	356	/* Like FETCH_STRING_CHAR_ADVANCE but fetch character from the current
	357	buffer. */
	358
	359	#define FETCH_CHAR_ADVANCE(OUTPUT, CHARIDX, BYTEIDX) \
	360	if (1) \
	361	{ \
	362	CHARIDX++; \
	363	if (!NILP (current_buffer->enable_multibyte_characters)) \
	364	{ \
	365	unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX); \
	366	int len; \
	367	\
	368	OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len); \
	369	BYTEIDX += len; \
	370	} \
	371	else \
	372	{ \
	373	OUTPUT = *(BYTE_POS_ADDR (BYTEIDX)); \
	374	BYTEIDX++; \
	375	} \
	376	} \
	377	else
378
379
380	/* Like FETCH_CHAR_ADVANCE but assumes STRING is multibyte. */
381
382	#define FETCH_CHAR_ADVANCE_NO_CHECK(OUTPUT, CHARIDX, BYTEIDX) \
383	if (1) \
384	{ \
385	unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX); \
386	int len; \
387	\
388	OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len); \
389	BYTEIDX += len; \
390	CHARIDX++; \
391	} \
392	else
393
394
395	/* Increase the buffer byte position POS_BYTE of the current buffer to
396	the next character boundary. No range checking of POS. */
397
398	#define INC_POS(pos_byte) \
399	do { \
400	unsigned char *p = BYTE_POS_ADDR (pos_byte); \
401	pos_byte += BYTES_BY_CHAR_HEAD (*p); \
402	} while (0)
403
404
405	/* Decrease the buffer byte position POS_BYTE of the current buffer to
406	the previous character boundary. No range checking of POS. */
407
408	#define DEC_POS(pos_byte) \
409	do { \
410	unsigned char *p; \
411	\
412	pos_byte--; \
413	if (pos_byte < GPT_BYTE) \
414	p = BEG_ADDR + pos_byte - 1; \
415	else \
416	p = BEG_ADDR + GAP_SIZE + pos_byte - 1; \
417	while (!CHAR_HEAD_P (*p)) \
418	{ \
419	p--; \
420	pos_byte--; \
421	} \
422	} while (0)
423
424	/* Increment both CHARPOS and BYTEPOS, each in the appropriate way. */
425
426	#define INC_BOTH(charpos, bytepos) \
427	do \
428	{ \
429	(charpos)++; \
430	if (NILP (current_buffer->enable_multibyte_characters)) \
431	(bytepos)++; \
432	else \
433	INC_POS ((bytepos)); \
434	} \
435	while (0)
436
437
438	/* Decrement both CHARPOS and BYTEPOS, each in the appropriate way. */
439
440	#define DEC_BOTH(charpos, bytepos) \
441	do \
442	{ \
443	(charpos)--; \
444	if (NILP (current_buffer->enable_multibyte_characters)) \
445	(bytepos)--; \
446	else \
447	DEC_POS ((bytepos)); \
448	} \
449	while (0)
450
451
452	/* Increase the buffer byte position POS_BYTE of the current buffer to
453	the next character boundary. This macro relies on the fact that
454	GPT_ADDR and Z_ADDR are always accessible and the values are
455	'\0'. No range checking of POS_BYTE. */
456
457	#define BUF_INC_POS(buf, pos_byte) \
458	do { \
459	unsigned char *p = BUF_BYTE_ADDRESS (buf, pos_byte); \
460	pos_byte += BYTES_BY_CHAR_HEAD (*p); \
461	} while (0)
462
463
464	/* Decrease the buffer byte position POS_BYTE of the current buffer to
465	the previous character boundary. No range checking of POS_BYTE. */
466
467	#define BUF_DEC_POS(buf, pos_byte) \
468	do { \
469	unsigned char *p; \
470	pos_byte--; \
471	if (pos_byte < BUF_GPT_BYTE (buf)) \
472	p = BUF_BEG_ADDR (buf) + pos_byte - 1; \
473	else \
474	p = BUF_BEG_ADDR (buf) + BUF_GAP_SIZE (buf) + pos_byte - 1; \
475	while (!CHAR_HEAD_P (*p)) \
476	{ \
477	p--; \
478	pos_byte--; \
479	} \
480	} while (0)
481
482
fc9d9d2a KH	483	#define MAYBE_UNIFY_CHAR(c) \
	484	if (CHAR_TABLE_P (Vchar_unify_table)) \
	485	{ \
	486	Lisp_Object val; \
	487	int unified; \
	488	\
	489	val = CHAR_TABLE_REF (Vchar_unify_table, c); \
	490	if (! NILP (val)) \
	491	{ \
	492	if (SYMBOLP (val)) \
	493	{ \
b5c7dbe6	494	Funify_charset (val, Qnil, Qnil); \
fc9d9d2a KH	495	val = CHAR_TABLE_REF (Vchar_unify_table, c); \
	496	} \
	497	if ((unified = XINT (val)) >= 0) \
	498	c = unified; \
	499	} \
	500	} \
0168c3d8 KH	501	else
0168c3d8 KH	502
fc9d9d2a	503
0168c3d8 KH	504	/* Return the width of ASCII character C. The width is measured by
	505	how many columns occupied on the screen when displayed in the
	506	current buffer. */
	507
	508	#define ASCII_CHAR_WIDTH(c) \
	509	(c < 0x20 \
	510	? (c == '\t' \
	511	? XFASTINT (current_buffer->tab_width) \
	512	: (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \
	513	: (c < 0x7f \
	514	? 1 \
	515	: ((NILP (current_buffer->ctl_arrow) ? 4 : 2))))
	516
	517	/* Return the width of character C. The width is measured by how many
	518	columns occupied on the screen when displayed in the current
	519	buffer. */
	520
	521	#define CHAR_WIDTH(c) \
	522	(ASCII_CHAR_P (c) \
	523	? ASCII_CHAR_WIDTH (c) \
	524	: XINT (CHAR_TABLE_REF (Vchar_width_table, c)))
	525
885317d8	526	extern int char_string_with_unification P_ ((int, unsigned char *));
b5c7dbe6 KH	527	extern int string_char_with_unification P_ ((const unsigned char *,
b5c7dbe6 KH	528	const unsigned char *, int ));
0168c3d8 KH	529
	530	extern int translate_char P_ ((Lisp_Object, int c));
	531	extern int char_printable_p P_ ((int c));
	532	extern void parse_str_as_multibyte P_ ((unsigned char , int, int , int *));
	533	extern int parse_str_to_multibyte P_ ((unsigned char *, int));
	534	extern int str_as_multibyte P_ ((unsigned char , int, int, int ));
	535	extern int str_to_multibyte P_ ((unsigned char *, int, int));
	536	extern int str_as_unibyte P_ ((unsigned char *, int));
	537	extern int strwidth P_ ((unsigned char *, int));
	538	extern int c_string_width P_ ((unsigned char , int, int, int , int *));
	539	extern int lisp_string_width P_ ((Lisp_Object, int, int , int ));
	540
	541	extern Lisp_Object Vprintable_chars;
	542
	543	extern Lisp_Object Qcharacterp, Qauto_fill_chars;
	544	extern Lisp_Object Vtranslation_table_vector;
	545	extern Lisp_Object Vchar_width_table;
	546	extern Lisp_Object Vchar_direction_table;
	547	extern Lisp_Object Vchar_unify_table;
	548
fac2bdc4 DL	549	extern Lisp_Object string_escape_byte8 P_ ((Lisp_Object));
fac2bdc4 DL	550
0168c3d8 KH	551	/* Return a translation table of id number ID. */
	552	#define GET_TRANSLATION_TABLE(id) \
	553	(XCDR(XVECTOR(Vtranslation_table_vector)->contents[(id)]))
	554
	555	/* A char-table for characters which may invoke auto-filling. */
	556	extern Lisp_Object Vauto_fill_chars;
	557
e18ef64a	558	extern Lisp_Object Vchar_script_table;
b5c7dbe6	559
0168c3d8 KH	560	/* Copy LEN bytes from FROM to TO. This macro should be used only
	561	when a caller knows that LEN is short and the obvious copy loop is
	562	faster than calling bcopy which has some overhead. Copying a
	563	multibyte sequence of a character is the typical case. */
	564
	565	#define BCOPY_SHORT(from, to, len) \
	566	do { \
	567	int i = len; \
	568	unsigned char from_p = from, to_p = to; \
	569	while (i--) to_p++ = from_p++; \
	570	} while (0)
	571
	572	#define DEFSYM(sym, name) \
	573	do { (sym) = intern ((name)); staticpro (&(sym)); } while (0)
	574
	575	#endif /* EMACS_CHARACTER_H */