1 /* rlmbutil.h -- utility functions for multibyte characters. */
3 /* Copyright (C) 2001 Free Software Foundation, Inc.
5 This file is part of the GNU Readline Library, a library for
6 reading lines of text with interactive input and history editing.
8 The GNU Readline Library is free software; you can redistribute it
9 and/or modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2, or
11 (at your option) any later version.
13 The GNU Readline Library is distributed in the hope that it will be
14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 The GNU General Public License is often shipped with GNU software, and
19 is generally kept in a file called COPYING or LICENSE. If you do not
20 have a copy of the license, write to the Free Software Foundation,
21 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
23 #if !defined (_RL_MBUTIL_H_)
28 /************************************************/
29 /* check multibyte capability for I18N code */
30 /************************************************/
32 /* For platforms which support the ISO C amendement 1 functionality we
33 support user defined character classes. */
34 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
35 #if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H)
38 # if defined (HAVE_MBRTOWC) && defined (HAVE_MBSRTOWCS)
39 /* system is supposed to support XPG5 */
40 # define HANDLE_MULTIBYTE 1
44 /* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */
45 #if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T)
46 # define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0)
47 # define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0)
48 # define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0)
49 # define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0)
50 # define mbrlen(s, n, ps) (mbrlen) (s, n, 0)
51 # define mbstate_t int
54 /* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to
55 handle multibyte chars (some systems define MB_LEN_MAX as 1) */
56 #ifdef HANDLE_MULTIBYTE
58 # if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16)
61 # if !defined (MB_LEN_MAX)
62 # define MB_LEN_MAX 16
66 /************************************************/
67 /* end of multibyte capability checks for I18N */
68 /************************************************/
71 * Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar:
73 * MB_FIND_ANY find any multibyte character
74 * MB_FIND_NONZERO find a non-zero-width multibyte character
77 #define MB_FIND_ANY 0x00
78 #define MB_FIND_NONZERO 0x01
80 extern int _rl_find_prev_mbchar
PARAMS((char *, int, int));
81 extern int _rl_find_next_mbchar
PARAMS((char *, int, int, int));
83 #ifdef HANDLE_MULTIBYTE
85 extern int _rl_compare_chars
PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *));
86 extern int _rl_get_char_len
PARAMS((char *, mbstate_t *));
87 extern int _rl_adjust_point
PARAMS((char *, int, mbstate_t *));
89 extern int _rl_read_mbchar
PARAMS((char *, int));
90 extern int _rl_read_mbstring
PARAMS((int, char *, int));
92 extern int _rl_is_mbchar_matched
PARAMS((char *, int, int, char *, int));
94 #else /* !HANDLE_MULTIBYTE */
102 #define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1))
103 #define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2))
105 #endif /* !HANDLE_MULTIBYTE */
107 extern int rl_byte_oriented
;
109 #endif /* _RL_MBUTIL_H_ */
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