d6e16cad4c
I initially thought wchar_t was locale independent, but this seems to be only the case on Linux. This means that we cannot depend on the *wc*() routines to implement *c16*() and *c32*(). Instead, use the Citrus libiconv that is part of libc. I'll see if there is anything I can do to make the existing functions somewhat useful in case the system is built without libiconv in the nearby future. If not, I'll simply remove the broken implementations. Reviewed by: jilles, gabor
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*-
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* Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/queue.h>
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#include <assert.h>
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#include <errno.h>
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#include <langinfo.h>
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#include <uchar.h>
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#include "../iconv/citrus_hash.h"
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#include "../iconv/citrus_module.h"
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#include "../iconv/citrus_iconv.h"
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#include "xlocale_private.h"
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typedef struct {
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bool initialized;
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struct _citrus_iconv iconv;
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union {
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charXX_t widechar[SRCBUF_LEN];
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char bytes[sizeof(charXX_t) * SRCBUF_LEN];
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} srcbuf;
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size_t srcbuf_len;
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} _ConversionState;
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_Static_assert(sizeof(_ConversionState) <= sizeof(mbstate_t),
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"Size of _ConversionState must not exceed mbstate_t's size.");
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size_t
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cXXrtomb_l(char * __restrict s, charXX_t c, mbstate_t * __restrict ps,
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locale_t locale)
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{
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_ConversionState *cs;
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struct _citrus_iconv *handle;
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char *src, *dst;
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size_t srcleft, dstleft, invlen;
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int err;
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FIX_LOCALE(locale);
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if (ps == NULL)
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ps = &locale->cXXrtomb;
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cs = (_ConversionState *)ps;
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handle = &cs->iconv;
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/* Reinitialize mbstate_t. */
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if (s == NULL || !cs->initialized) {
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if (_citrus_iconv_open(&handle, UTF_XX_INTERNAL,
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nl_langinfo_l(CODESET, locale)) != 0) {
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cs->initialized = false;
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errno = EINVAL;
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return (-1);
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}
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handle->cv_shared->ci_discard_ilseq = true;
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handle->cv_shared->ci_hooks = NULL;
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cs->srcbuf_len = 0;
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cs->initialized = true;
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if (s == NULL)
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return (1);
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}
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assert(cs->srcbuf_len < sizeof(cs->srcbuf.widechar) / sizeof(charXX_t));
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cs->srcbuf.widechar[cs->srcbuf_len++] = c;
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/* Perform conversion. */
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src = cs->srcbuf.bytes;
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srcleft = cs->srcbuf_len * sizeof(charXX_t);
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dst = s;
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dstleft = MB_CUR_MAX_L(locale);
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err = _citrus_iconv_convert(handle, &src, &srcleft, &dst, &dstleft,
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0, &invlen);
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/* Character is part of a surrogate pair. We need more input. */
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if (err == EINVAL)
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return (0);
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cs->srcbuf_len = 0;
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/* Illegal sequence. */
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if (dst == s) {
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errno = EILSEQ;
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return ((size_t)-1);
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}
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return (dst - s);
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}
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size_t
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cXXrtomb(char * __restrict s, charXX_t c, mbstate_t * __restrict ps)
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{
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return (cXXrtomb_l(s, c, ps, __get_locale()));
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}
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