5836a818ec
This reverts commitb558ff043d. This reverts commit4a11f20659. The initial import commit failed to retain local changes made to readline's configure.in (and the commit message erroneously stated that there were no local changes that needed to be reapplied). Also the import caused a couple of build errors and a scattering of testsuite regressions throughout many arches. It's probably better to start over with this import, hopefully more carefully next time.
154 lines
5 KiB
C
154 lines
5 KiB
C
/* rlmbutil.h -- utility functions for multibyte characters. */
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/* Copyright (C) 2001-2009 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library (Readline), a library
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for reading lines of text with interactive input and history editing.
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Readline is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Readline is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Readline. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined (_RL_MBUTIL_H_)
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#define _RL_MBUTIL_H_
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#include "rlstdc.h"
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/************************************************/
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/* check multibyte capability for I18N code */
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/************************************************/
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/* For platforms which support the ISO C amendement 1 functionality we
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support user defined character classes. */
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/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
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#if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H) && defined (HAVE_LOCALE_H)
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# include <wchar.h>
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# include <wctype.h>
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# if defined (HAVE_ISWCTYPE) && \
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defined (HAVE_ISWLOWER) && \
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defined (HAVE_ISWUPPER) && \
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defined (HAVE_MBSRTOWCS) && \
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defined (HAVE_MBRTOWC) && \
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defined (HAVE_MBRLEN) && \
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defined (HAVE_TOWLOWER) && \
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defined (HAVE_TOWUPPER) && \
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defined (HAVE_WCHAR_T) && \
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defined (HAVE_WCWIDTH)
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/* system is supposed to support XPG5 */
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# define HANDLE_MULTIBYTE 1
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# endif
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#endif
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/* If we don't want multibyte chars even on a system that supports them, let
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the configuring user turn multibyte support off. */
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#if defined (NO_MULTIBYTE_SUPPORT)
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# undef HANDLE_MULTIBYTE
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#endif
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/* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */
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#if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T)
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# define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0)
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# define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0)
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# define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0)
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# define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0)
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# define mbrlen(s, n, ps) (mbrlen) (s, n, 0)
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# define mbstate_t int
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#endif
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/* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to
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handle multibyte chars (some systems define MB_LEN_MAX as 1) */
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#ifdef HANDLE_MULTIBYTE
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# include <limits.h>
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# if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16)
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# undef MB_LEN_MAX
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# endif
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# if !defined (MB_LEN_MAX)
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# define MB_LEN_MAX 16
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# endif
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#endif
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/************************************************/
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/* end of multibyte capability checks for I18N */
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/************************************************/
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/*
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* Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar:
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*
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* MB_FIND_ANY find any multibyte character
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* MB_FIND_NONZERO find a non-zero-width multibyte character
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*/
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#define MB_FIND_ANY 0x00
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#define MB_FIND_NONZERO 0x01
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extern int _rl_find_prev_mbchar PARAMS((char *, int, int));
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extern int _rl_find_next_mbchar PARAMS((char *, int, int, int));
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#ifdef HANDLE_MULTIBYTE
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extern int _rl_compare_chars PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *));
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extern int _rl_get_char_len PARAMS((char *, mbstate_t *));
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extern int _rl_adjust_point PARAMS((char *, int, mbstate_t *));
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extern int _rl_read_mbchar PARAMS((char *, int));
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extern int _rl_read_mbstring PARAMS((int, char *, int));
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extern int _rl_is_mbchar_matched PARAMS((char *, int, int, char *, int));
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extern wchar_t _rl_char_value PARAMS((char *, int));
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extern int _rl_walphabetic PARAMS((wchar_t));
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#define _rl_to_wupper(wc) (iswlower (wc) ? towupper (wc) : (wc))
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#define _rl_to_wlower(wc) (iswupper (wc) ? towlower (wc) : (wc))
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#define MB_NEXTCHAR(b,s,c,f) \
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((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
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? _rl_find_next_mbchar ((b), (s), (c), (f)) \
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: ((s) + (c)))
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#define MB_PREVCHAR(b,s,f) \
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((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
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? _rl_find_prev_mbchar ((b), (s), (f)) \
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: ((s) - 1))
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#define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2)
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#define MB_NULLWCH(x) ((x) == 0)
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#else /* !HANDLE_MULTIBYTE */
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#undef MB_LEN_MAX
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#undef MB_CUR_MAX
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#define MB_LEN_MAX 1
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#define MB_CUR_MAX 1
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#define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1))
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#define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2))
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#define _rl_char_value(buf,ind) ((buf)[(ind)])
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#define _rl_walphabetic(c) (rl_alphabetic (c))
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#define _rl_to_wupper(c) (_rl_to_upper (c))
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#define _rl_to_wlower(c) (_rl_to_lower (c))
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#define MB_NEXTCHAR(b,s,c,f) ((s) + (c))
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#define MB_PREVCHAR(b,s,f) ((s) - 1)
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#define MB_INVALIDCH(x) (0)
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#define MB_NULLWCH(x) (0)
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#endif /* !HANDLE_MULTIBYTE */
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extern int rl_byte_oriented;
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#endif /* _RL_MBUTIL_H_ */
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