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[Emacs-diffs] Changes to src/character.h
|
From: |
Miles Bader |
|
Subject: |
[Emacs-diffs] Changes to src/character.h |
|
Date: |
Fri, 01 Feb 2008 16:04:21 +0000 |
CVSROOT: /cvsroot/emacs
Module name: emacs
Changes by: Miles Bader <miles> 08/02/01 16:01:31
Index: src/character.h
===================================================================
RCS file: src/character.h
diff -N src/character.h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ src/character.h 1 Feb 2008 16:00:51 -0000 1.2
@@ -0,0 +1,667 @@
+/* Header for multibyte character handler.
+ Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
+ Licensed to the Free Software Foundation.
+ Copyright (C) 2003, 2006
+ 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
+ 3FFF80-3FFFFF C0..C1 1100000x 10xxxxxx (for eight-bit-char)
+ 400000-... invalid
+
+ invalid 1st byte 80..BF 10xxxxxx
+ F9..FF 11111xxx (xxx != 000)
+*/
+
+/* 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
+
+/* Minimum leading code of multibyte characters. */
+#define MIN_MULTIBYTE_LEADING_CODE 0xC0
+/* Maximum leading code of multibyte characters. */
+#define MAX_MULTIBYTE_LEADING_CODE 0xF8
+
+/* 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)
+
+/* Mapping table from unibyte chars to multibyte chars. */
+extern int unibyte_to_multibyte_table[256];
+
+/* Convert the unibyte character C to the corresponding multibyte
+ character. If C can't be converted, return C. */
+#define unibyte_char_to_multibyte(c) \
+ ((c) < 256 ? unibyte_to_multibyte_table[(c)] : (c))
+
+/* Nth element is 1 iff unibyte char N can be mapped to a multibyte
+ char. */
+extern char unibyte_has_multibyte_table[256];
+
+#define UNIBYTE_CHAR_HAS_MULTIBYTE_P(c) (unibyte_has_multibyte_table[(c)])
+
+/* If C is not ASCII, make it unibyte. */
+#define MAKE_CHAR_UNIBYTE(c) \
+ do { \
+ if (! ASCII_CHAR_P (c)) \
+ c = CHAR_TO_BYTE8 (c); \
+ } while (0)
+
+
+/* If C is not ASCII, make it multibyte. It assumes C < 256. */
+#define MAKE_CHAR_MULTIBYTE(c) ((c) = unibyte_to_multibyte_table[(c)])
+
+/* This is the maximum byte length of multibyte form. */
+#define MAX_MULTIBYTE_LENGTH 5
+
+/* Return a Lisp character whose character code is C. It assumes C is
+ a valid character code. */
+#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) \
+ CHECK_TYPE (CHARACTERP (x), Qcharacterp, x)
+
+#define CHECK_CHARACTER_CAR(x) \
+ do { \
+ Lisp_Object tmp = XCAR (x); \
+ CHECK_CHARACTER (tmp); \
+ XSETCAR ((x), tmp); \
+ } while (0)
+
+#define CHECK_CHARACTER_CDR(x) \
+ do { \
+ Lisp_Object tmp = XCDR (x); \
+ CHECK_CHARACTER (tmp); \
+ XSETCDR ((x), tmp); \
+ } 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)
+
+
+/* Return the leading code of multibyte form of C. */
+#define CHAR_LEADING_CODE(c) \
+ ((c) <= MAX_1_BYTE_CHAR ? c \
+ : (c) <= MAX_2_BYTE_CHAR ? (0xC0 | ((c) >> 6)) \
+ : (c) <= MAX_3_BYTE_CHAR ? (0xE0 | ((c) >> 12)) \
+ : (c) <= MAX_4_BYTE_CHAR ? (0xF0 | ((c) >> 18)) \
+ : (c) <= MAX_5_BYTE_CHAR ? 0xF8 \
+ : (0xC0 | (((c) >> 6) & 0x01)))
+
+
+/* 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) \
+ : char_string ((unsigned) c, p))
+
+/* Store multibyte form of byte 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 | ((b) & 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 \
+ (p) += char_string ((c), (p)); \
+ } 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)
+
+/* If P is before LIMIT, advance P to the next character boundary. It
+ assumes that P is already at a character boundary of the sane
+ mulitbyte form whose end address is LIMIT. */
+
+#define NEXT_CHAR_BOUNDARY(p, limit) \
+ do { \
+ if ((p) < (limit)) \
+ (p) += BYTES_BY_CHAR_HEAD (*(p)); \
+ } while (0)
+
+
+/* If P is after LIMIT, advance P to the previous character boundary.
+ It assumes that P is already at a character boundary of the sane
+ mulitbyte form whose beginning address is LIMIT. */
+
+#define PREV_CHAR_BOUNDARY(p, limit) \
+ do { \
+ if ((p) > (limit)) \
+ {
\
+ const unsigned char *p0 = (p); \
+ do { \
+ p0--; \
+ } while (p0 >= limit && ! CHAR_HEAD_P (*p0)); \
+ (p) = (BYTES_BY_CHAR_HEAD (*p0) == (p) - p0) ? p0 : (p) - 1; \
+ }
\
+ } while (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 ((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 ((p), NULL, &actual_len))
+
+
+/* Like STRING_CHAR but advance 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 ((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 return a multibyte character eve
+ if STRING is unibyte. */
+
+#define FETCH_STRING_CHAR_AS_MULTIBYTE_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++]; \
+ MAKE_CHAR_MULTIBYTE (OUTPUT); \
+ } \
+ } \
+ 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 the current buffer 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)
+
+
+/* If C is a character to be unified with a Unicode character, return
+ the unified Unicode character. */
+
+#define MAYBE_UNIFY_CHAR(c) \
+ if (c > MAX_UNICODE_CHAR \
+ && 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_resolve_modifier_mask P_ ((int));
+extern int char_string P_ ((unsigned, unsigned char *));
+extern int string_char 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_ ((const 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_ ((const 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;
+extern Lisp_Object Vscript_representative_chars;
+
+/* 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 */
+
+/* arch-tag: 4ef86004-2eff-4073-8cea-cfcbcf7188ac
+ (do not change this comment) */
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- [Emacs-diffs] Changes to src/character.h,
Miles Bader <=