| /* rlmbutil.h -- utility functions for multibyte characters. */ |
| |
| /* Copyright (C) 2001, 2003 Free Software Foundation, Inc. |
| |
| This file is part of the GNU Readline Library, a library for |
| reading lines of text with interactive input and history editing. |
| |
| The GNU Readline Library 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. |
| |
| The GNU Readline Library 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. |
| |
| The GNU General Public License is often shipped with GNU software, and |
| is generally kept in a file called COPYING or LICENSE. If you do not |
| have a copy of the license, write to the Free Software Foundation, |
| 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| |
| #if !defined (_RL_MBUTIL_H_) |
| #define _RL_MBUTIL_H_ |
| |
| #include "rlstdc.h" |
| |
| /************************************************/ |
| /* check multibyte capability for I18N code */ |
| /************************************************/ |
| |
| /* For platforms which support the ISO C amendement 1 functionality we |
| support user defined character classes. |
| |
| Some platforms have the multibyte functions such as mbsrtowcs but |
| are lacking the multitype type mbstate_t. BeOS (unknown version) |
| and HP/UX 11.23 without _XOPEN_SOURCE=500 are like this. |
| |
| We really need mbstate_t type to operate properly. For example, see |
| compute_lcd_of_matches, where two mbstate_t's are active at the same |
| time. So we require both the functions and the mbstate_t type in |
| order to enable multibyte support. */ |
| |
| /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */ |
| #if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H) |
| # include <wchar.h> |
| # include <wctype.h> |
| # if defined (HAVE_MBSTATE_T) && defined (HAVE_MBSRTOWCS) && defined (HAVE_MBRTOWC) && defined (HAVE_MBRLEN) && defined (HAVE_WCWIDTH) |
| /* system is supposed to support XPG5 */ |
| # define HANDLE_MULTIBYTE 1 |
| # endif |
| #endif |
| |
| /* If we don't want multibyte chars even on a system that supports them, let |
| the configuring user turn multibyte support off. */ |
| #if defined (NO_MULTIBYTE_SUPPORT) |
| # undef HANDLE_MULTIBYTE |
| #endif |
| |
| /* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */ |
| #if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T) |
| # define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0) |
| # define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0) |
| # define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0) |
| # define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0) |
| # define mbrlen(s, n, ps) (mbrlen) (s, n, 0) |
| # define mbstate_t int |
| #endif |
| |
| /* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to |
| handle multibyte chars (some systems define MB_LEN_MAX as 1) */ |
| #ifdef HANDLE_MULTIBYTE |
| # include <limits.h> |
| # if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16) |
| # undef MB_LEN_MAX |
| # endif |
| # if !defined (MB_LEN_MAX) |
| # define MB_LEN_MAX 16 |
| # endif |
| #endif |
| |
| /************************************************/ |
| /* end of multibyte capability checks for I18N */ |
| /************************************************/ |
| |
| /* |
| * Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar: |
| * |
| * MB_FIND_ANY find any multibyte character |
| * MB_FIND_NONZERO find a non-zero-width multibyte character |
| */ |
| |
| #define MB_FIND_ANY 0x00 |
| #define MB_FIND_NONZERO 0x01 |
| |
| extern int _rl_find_prev_mbchar PARAMS((char *, int, int)); |
| extern int _rl_find_next_mbchar PARAMS((char *, int, int, int)); |
| |
| #ifdef HANDLE_MULTIBYTE |
| |
| extern int _rl_compare_chars PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *)); |
| extern int _rl_get_char_len PARAMS((char *, mbstate_t *)); |
| extern int _rl_adjust_point PARAMS((char *, int, mbstate_t *)); |
| |
| extern int _rl_read_mbchar PARAMS((char *, int)); |
| extern int _rl_read_mbstring PARAMS((int, char *, int)); |
| |
| extern int _rl_is_mbchar_matched PARAMS((char *, int, int, char *, int)); |
| |
| extern wchar_t _rl_char_value PARAMS((char *, int)); |
| extern int _rl_walphabetic PARAMS((wchar_t)); |
| |
| #define _rl_to_wupper(wc) (iswlower (wc) ? towupper (wc) : (wc)) |
| #define _rl_to_wlower(wc) (iswupper (wc) ? towlower (wc) : (wc)) |
| |
| #define MB_NEXTCHAR(b,s,c,f) \ |
| ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \ |
| ? _rl_find_next_mbchar ((b), (s), (c), (f)) \ |
| : ((s) + (c))) |
| #define MB_PREVCHAR(b,s,f) \ |
| ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \ |
| ? _rl_find_prev_mbchar ((b), (s), (f)) \ |
| : ((s) - 1)) |
| |
| #define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2) |
| #define MB_NULLWCH(x) ((x) == 0) |
| |
| #else /* !HANDLE_MULTIBYTE */ |
| |
| #undef MB_LEN_MAX |
| #undef MB_CUR_MAX |
| |
| #define MB_LEN_MAX 1 |
| #define MB_CUR_MAX 1 |
| |
| #define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1)) |
| #define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2)) |
| |
| #define _rl_char_value(buf,ind) ((buf)[(ind)]) |
| |
| #define _rl_walphabetic(c) (rl_alphabetic (c)) |
| |
| #define _rl_to_wupper(c) (_rl_to_upper (c)) |
| #define _rl_to_wlower(c) (_rl_to_lower (c)) |
| |
| #define MB_NEXTCHAR(b,s,c,f) ((s) + (c)) |
| #define MB_PREVCHAR(b,s,f) ((s) - 1) |
| |
| #define MB_INVALIDCH(x) (0) |
| #define MB_NULLWCH(x) (0) |
| |
| #endif /* !HANDLE_MULTIBYTE */ |
| |
| extern int rl_byte_oriented; |
| |
| #endif /* _RL_MBUTIL_H_ */ |