diff options
Diffstat (limited to 'lib/libiconv_modules/EUCTW/citrus_euctw.c')
| -rw-r--r-- | lib/libiconv_modules/EUCTW/citrus_euctw.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/lib/libiconv_modules/EUCTW/citrus_euctw.c b/lib/libiconv_modules/EUCTW/citrus_euctw.c new file mode 100644 index 0000000..79aa9fa --- /dev/null +++ b/lib/libiconv_modules/EUCTW/citrus_euctw.c @@ -0,0 +1,377 @@ +/* $FreeBSD$ */ +/* $NetBSD: citrus_euctw.c,v 1.11 2008/06/14 16:01:07 tnozaki Exp $ */ + +/*- + * 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 (2^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)); +} + +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)); +} + +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" |
