/* 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) /* system is supposed to support XPG5 */ # define HANDLE_MULTIBYTE 1 # endif #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)); #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)) #endif /* !HANDLE_MULTIBYTE */ extern int rl_byte_oriented; #endif /* _RL_MBUTIL_H_ */