/* Header for multibyte character handler.
- Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
- Licensed to the Free Software Foundation.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005,
+ 2006 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1997, 1998, 2003
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H14PRO021
This file is part of GNU Emacs.
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. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#ifndef EMACS_CHARSET_H
#define EMACS_CHARSET_H
extern int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */
extern int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */
extern int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */
+extern int charset_mule_unicode_0100_24ff;
+extern int charset_mule_unicode_2500_33ff;
+extern int charset_mule_unicode_e000_ffff;
/* Check if CH is an ASCII character or a base leading-code.
Nowadays, any byte can be the first byte of a character in a
#define MAX_CHAR (0x1F << 14)
/* 1 if C is a single byte character, else 0. */
-#define SINGLE_BYTE_CHAR_P(c) ((unsigned) (c) < 0x100)
+#define SINGLE_BYTE_CHAR_P(c) (((unsigned)(c) & 0xFF) == (c))
/* 1 if BYTE is an ASCII character in itself, in multibyte mode. */
#define ASCII_BYTE_P(byte) ((byte) < 0x80)
#else /* not BYTE_COMBINING_DEBUG */
#define PARSE_MULTIBYTE_SEQ(str, length, bytes) \
- (bytes) = BYTES_BY_CHAR_HEAD ((str)[0])
+ ((void)(length), (bytes) = BYTES_BY_CHAR_HEAD ((str)[0]))
#endif /* not BYTE_COMBINING_DEBUG */
+#define VALID_LEADING_CODE_P(code) \
+ (! NILP (CHARSET_TABLE_ENTRY (code)))
+
/* Return 1 iff the byte sequence at unibyte string STR (LENGTH bytes)
is valid as a multibyte form. If valid, by a side effect, BYTES is
set to the byte length of the multibyte form. */
-#define UNIBYTE_STR_AS_MULTIBYTE_P(str, length, bytes) \
- (((str)[0] < 0x80 || (str)[0] >= 0xA0) \
- ? ((bytes) = 1) \
- : (((bytes) = BYTES_BY_CHAR_HEAD ((str)[0])), \
- ((bytes) > 1 && (bytes) <= (length) \
- && (str)[0] != LEADING_CODE_8_BIT_CONTROL \
- && !CHAR_HEAD_P ((str)[1]) \
- && ((bytes) == 2 \
- || (!CHAR_HEAD_P ((str)[2]) \
- && ((bytes) == 3 \
- || !CHAR_HEAD_P ((str)[3])))))))
+#define UNIBYTE_STR_AS_MULTIBYTE_P(str, length, bytes) \
+ (((str)[0] < 0x80 || (str)[0] >= 0xA0) \
+ ? ((bytes) = 1) \
+ : (((bytes) = BYTES_BY_CHAR_HEAD ((str)[0])), \
+ ((bytes) <= (length) \
+ && !CHAR_HEAD_P ((str)[1]) \
+ && ((bytes) == 2 \
+ ? (str)[0] != LEADING_CODE_8_BIT_CONTROL \
+ : (!CHAR_HEAD_P ((str)[2]) \
+ && ((bytes) == 3 \
+ ? (((str)[0] != LEADING_CODE_PRIVATE_11 \
+ && (str)[0] != LEADING_CODE_PRIVATE_12) \
+ || VALID_LEADING_CODE_P (str[1])) \
+ : (!CHAR_HEAD_P ((str)[3]) \
+ && VALID_LEADING_CODE_P (str[1]))))))))
+
/* Return 1 iff the byte sequence at multibyte string STR is valid as
a unibyte form. By a side effect, BYTES is set to the byte length
#define CHAR_STRING(c, str) \
(SINGLE_BYTE_CHAR_P (c) \
- ? ((ASCII_BYTE_P (c) || c >= 0xA0) \
+ ? ((ASCII_BYTE_P (c) || c >= 0xA0) \
? (*(str) = (unsigned char)(c), 1) \
: (*(str) = LEADING_CODE_8_BIT_CONTROL, *((str)+ 1) = c + 0x20, 2)) \
: char_to_string (c, (unsigned char *) str))
? 1 \
: multibyte_form_length (str, len))
+/* 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)
+
+
#ifdef emacs
/* Increase the buffer byte position POS_BYTE of the current buffer to
extern int char_bytes P_ ((int));
extern int char_valid_p P_ ((int, int));
+EXFUN (Funibyte_char_to_multibyte, 1);
+
extern Lisp_Object Vtranslation_table_vector;
/* Return a translation table of id number ID. */
} while (0)
#endif /* EMACS_CHARSET_H */
+
+/* arch-tag: 3b96db55-4961-481d-ac3e-219f46a2b3aa
+ (do not change this comment) */