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Diffstat (limited to 'src/character.h')
| -rw-r--r-- | src/character.h | 667 |
1 files changed, 667 insertions, 0 deletions
diff --git a/src/character.h b/src/character.h new file mode 100644 index 00000000000..1e4a120e035 --- /dev/null +++ b/src/character.h @@ -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) */ |