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citrus_euctw.c
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citrus_euctw.h
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Editing: citrus_euctw.c
/* $FreeBSD$ */ /* $NetBSD: citrus_euctw.c,v 1.11 2008/06/14 16:01:07 tnozaki Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c)2002 Citrus Project, * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /*- * Copyright (c)1999 Citrus Project, * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Citrus: xpg4dl/FreeBSD/lib/libc/locale/euctw.c,v 1.13 2001/06/21 01:51:44 yamt Exp $ */ #include <sys/cdefs.h> #include <sys/types.h> #include <assert.h> #include <errno.h> #include <limits.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <wchar.h> #include "citrus_namespace.h" #include "citrus_types.h" #include "citrus_module.h" #include "citrus_stdenc.h" #include "citrus_euctw.h" /* ---------------------------------------------------------------------- * private stuffs used by templates */ typedef struct { int chlen; char ch[4]; } _EUCTWState; typedef struct { int dummy; } _EUCTWEncodingInfo; #define _SS2 0x008e #define _SS3 0x008f #define _CEI_TO_EI(_cei_) (&(_cei_)->ei) #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_ #define _FUNCNAME(m) _citrus_EUCTW_##m #define _ENCODING_INFO _EUCTWEncodingInfo #define _ENCODING_STATE _EUCTWState #define _ENCODING_MB_CUR_MAX(_ei_) 4 #define _ENCODING_IS_STATE_DEPENDENT 0 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0 static __inline int _citrus_EUCTW_cs(unsigned int c) { c &= 0xff; return ((c & 0x80) ? (c == _SS2 ? 2 : 1) : 0); } static __inline int _citrus_EUCTW_count(int cs) { switch (cs) { case 0: /*FALLTHROUGH*/ case 1: /*FALLTHROUGH*/ case 2: return (1 << cs); case 3: abort(); /*NOTREACHED*/ } return (0); } static __inline void /*ARGSUSED*/ _citrus_EUCTW_init_state(_EUCTWEncodingInfo * __restrict ei __unused, _EUCTWState * __restrict s) { memset(s, 0, sizeof(*s)); } #if 0 static __inline void /*ARGSUSED*/ _citrus_EUCTW_pack_state(_EUCTWEncodingInfo * __restrict ei __unused, void * __restrict pspriv, const _EUCTWState * __restrict s) { memcpy(pspriv, (const void *)s, sizeof(*s)); } static __inline void /*ARGSUSED*/ _citrus_EUCTW_unpack_state(_EUCTWEncodingInfo * __restrict ei __unused, _EUCTWState * __restrict s, const void * __restrict pspriv) { memcpy((void *)s, pspriv, sizeof(*s)); } #endif static int /*ARGSUSED*/ _citrus_EUCTW_encoding_module_init(_EUCTWEncodingInfo * __restrict ei, const void * __restrict var __unused, size_t lenvar __unused) { memset((void *)ei, 0, sizeof(*ei)); return (0); } static void /*ARGSUSED*/ _citrus_EUCTW_encoding_module_uninit(_EUCTWEncodingInfo *ei __unused) { } static int _citrus_EUCTW_mbrtowc_priv(_EUCTWEncodingInfo * __restrict ei, wchar_t * __restrict pwc, char ** __restrict s, size_t n, _EUCTWState * __restrict psenc, size_t * __restrict nresult) { char *s0; wchar_t wchar; int c, chlenbak, cs; s0 = *s; if (s0 == NULL) { _citrus_EUCTW_init_state(ei, psenc); *nresult = 0; /* state independent */ return (0); } chlenbak = psenc->chlen; /* make sure we have the first byte in the buffer */ switch (psenc->chlen) { case 0: if (n < 1) goto restart; psenc->ch[0] = *s0++; psenc->chlen = 1; n--; break; case 1: case 2: break; default: /* illgeal state */ goto ilseq; } c = _citrus_EUCTW_count(cs = _citrus_EUCTW_cs(psenc->ch[0] & 0xff)); if (c == 0) goto ilseq; while (psenc->chlen < c) { if (n < 1) goto ilseq; psenc->ch[psenc->chlen] = *s0++; psenc->chlen++; n--; } wchar = 0; switch (cs) { case 0: if (psenc->ch[0] & 0x80) goto ilseq; wchar = psenc->ch[0] & 0xff; break; case 1: if (!(psenc->ch[0] & 0x80) || !(psenc->ch[1] & 0x80)) goto ilseq; wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff); wchar |= 'G' << 24; break; case 2: if ((unsigned char)psenc->ch[1] < 0xa1 || 0xa7 < (unsigned char)psenc->ch[1]) goto ilseq; if (!(psenc->ch[2] & 0x80) || !(psenc->ch[3] & 0x80)) goto ilseq; wchar = ((psenc->ch[2] & 0xff) << 8) | (psenc->ch[3] & 0xff); wchar |= ('G' + psenc->ch[1] - 0xa1) << 24; break; default: goto ilseq; } *s = s0; psenc->chlen = 0; if (pwc) *pwc = wchar; *nresult = wchar ? c - chlenbak : 0; return (0); ilseq: psenc->chlen = 0; *nresult = (size_t)-1; return (EILSEQ); restart: *s = s0; *nresult = (size_t)-1; return (0); } static int _citrus_EUCTW_wcrtomb_priv(_EUCTWEncodingInfo * __restrict ei __unused, char * __restrict s, size_t n, wchar_t wc, _EUCTWState * __restrict psenc __unused, size_t * __restrict nresult) { wchar_t cs, v; int clen, i, ret; size_t len; cs = wc & 0x7f000080; clen = 1; if (wc & 0x00007f00) clen = 2; if ((wc & 0x007f0000) && !(wc & 0x00800000)) clen = 3; if (clen == 1 && cs == 0x00000000) { /* ASCII */ len = 1; if (n < len) { ret = E2BIG; goto err; } v = wc & 0x0000007f; } else if (clen == 2 && cs == ('G' << 24)) { /* CNS-11643-1 */ len = 2; if (n < len) { ret = E2BIG; goto err; } v = wc & 0x00007f7f; v |= 0x00008080; } else if (clen == 2 && 'H' <= (cs >> 24) && (cs >> 24) <= 'M') { /* CNS-11643-[2-7] */ len = 4; if (n < len) { ret = E2BIG; goto err; } *s++ = _SS2; *s++ = (cs >> 24) - 'H' + 0xa2; v = wc & 0x00007f7f; v |= 0x00008080; } else { ret = EILSEQ; goto err; } i = clen; while (i-- > 0) *s++ = (v >> (i << 3)) & 0xff; *nresult = len; return (0); err: *nresult = (size_t)-1; return (ret); } static __inline int /*ARGSUSED*/ _citrus_EUCTW_stdenc_wctocs(_EUCTWEncodingInfo * __restrict ei __unused, _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc) { *csid = (_csid_t)(wc >> 24) & 0xFF; *idx = (_index_t)(wc & 0x7F7F); return (0); } static __inline int /*ARGSUSED*/ _citrus_EUCTW_stdenc_cstowc(_EUCTWEncodingInfo * __restrict ei __unused, wchar_t * __restrict wc, _csid_t csid, _index_t idx) { if (csid == 0) { if ((idx & ~0x7F) != 0) return (EINVAL); *wc = (wchar_t)idx; } else { if (csid < 'G' || csid > 'M' || (idx & ~0x7F7F) != 0) return (EINVAL); *wc = (wchar_t)idx | ((wchar_t)csid << 24); } return (0); } static __inline int /*ARGSUSED*/ _citrus_EUCTW_stdenc_get_state_desc_generic(_EUCTWEncodingInfo * __restrict ei __unused, _EUCTWState * __restrict psenc, int * __restrict rstate) { *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL : _STDENC_SDGEN_INCOMPLETE_CHAR; return (0); } /* ---------------------------------------------------------------------- * public interface for stdenc */ _CITRUS_STDENC_DECLS(EUCTW); _CITRUS_STDENC_DEF_OPS(EUCTW); #include "citrus_stdenc_template.h"
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