diff options
Diffstat (limited to 'lib/libiconv_modules/JOHAB/citrus_johab.c')
| -rw-r--r-- | lib/libiconv_modules/JOHAB/citrus_johab.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/lib/libiconv_modules/JOHAB/citrus_johab.c b/lib/libiconv_modules/JOHAB/citrus_johab.c new file mode 100644 index 0000000..35c35f3 --- /dev/null +++ b/lib/libiconv_modules/JOHAB/citrus_johab.c @@ -0,0 +1,333 @@ +/* $FreeBSD$ */ +/* $NetBSD: citrus_johab.c,v 1.4 2008/06/14 16:01:07 tnozaki Exp $ */ + +/*- + * Copyright (c)2006 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. + */ +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <assert.h> +#include <errno.h> +#include <limits.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> + +#include "citrus_namespace.h" +#include "citrus_types.h" +#include "citrus_bcs.h" +#include "citrus_module.h" +#include "citrus_stdenc.h" +#include "citrus_johab.h" + +/* ---------------------------------------------------------------------- + * private stuffs used by templates + */ + +typedef struct { + int chlen; + char ch[2]; +} _JOHABState; + +typedef struct { + int dummy; +} _JOHABEncodingInfo; + +#define _CEI_TO_EI(_cei_) (&(_cei_)->ei) +#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_ + +#define _FUNCNAME(m) _citrus_JOHAB_##m +#define _ENCODING_INFO _JOHABEncodingInfo +#define _ENCODING_STATE _JOHABState +#define _ENCODING_MB_CUR_MAX(_ei_) 2 +#define _ENCODING_IS_STATE_DEPENDENT 0 +#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0 + + +static __inline void +/*ARGSUSED*/ +_citrus_JOHAB_init_state(_JOHABEncodingInfo * __restrict ei __unused, + _JOHABState * __restrict psenc) +{ + + psenc->chlen = 0; +} + +static __inline void +/*ARGSUSED*/ +_citrus_JOHAB_pack_state(_JOHABEncodingInfo * __restrict ei __unused, + void * __restrict pspriv, const _JOHABState * __restrict psenc) +{ + + memcpy(pspriv, (const void *)psenc, sizeof(*psenc)); +} + +static __inline void +/*ARGSUSED*/ +_citrus_JOHAB_unpack_state(_JOHABEncodingInfo * __restrict ei __unused, + _JOHABState * __restrict psenc, const void * __restrict pspriv) +{ + + memcpy((void *)psenc, pspriv, sizeof(*psenc)); +} + +static void +/*ARGSUSED*/ +_citrus_JOHAB_encoding_module_uninit(_JOHABEncodingInfo *ei __unused) +{ + + /* ei may be null */ +} + +static int +/*ARGSUSED*/ +_citrus_JOHAB_encoding_module_init(_JOHABEncodingInfo * __restrict ei __unused, + const void * __restrict var __unused, size_t lenvar __unused) +{ + + /* ei may be null */ + return (0); +} + +static __inline bool +ishangul(int l, int t) +{ + + return ((l >= 0x84 && l <= 0xD3) && + ((t >= 0x41 && t <= 0x7E) || (t >= 0x81 && t <= 0xFE))); +} + +static __inline bool +isuda(int l, int t) +{ + + return ((l == 0xD8) && + ((t >= 0x31 && t <= 0x7E) || (t >= 0x91 && t <= 0xFE))); +} + +static __inline bool +ishanja(int l, int t) +{ + + return (((l >= 0xD9 && l <= 0xDE) || (l >= 0xE0 && l <= 0xF9)) && + ((t >= 0x31 && t <= 0x7E) || (t >= 0x91 && t <= 0xFE))); +} + +static int +/*ARGSUSED*/ +_citrus_JOHAB_mbrtowc_priv(_JOHABEncodingInfo * __restrict ei, + wchar_t * __restrict pwc, char ** __restrict s, size_t n, + _JOHABState * __restrict psenc, size_t * __restrict nresult) +{ + char *s0; + int l, t; + + if (*s == NULL) { + _citrus_JOHAB_init_state(ei, psenc); + *nresult = _ENCODING_IS_STATE_DEPENDENT; + return (0); + } + s0 = *s; + + switch (psenc->chlen) { + case 0: + if (n-- < 1) + goto restart; + l = *s0++ & 0xFF; + if (l <= 0x7F) { + if (pwc != NULL) + *pwc = (wchar_t)l; + *nresult = (l == 0) ? 0 : 1; + *s = s0; + return (0); + } + psenc->ch[psenc->chlen++] = l; + break; + case 1: + l = psenc->ch[0] & 0xFF; + break; + default: + return (EINVAL); + } + if (n-- < 1) { +restart: + *nresult = (size_t)-2; + *s = s0; + return (0); + } + t = *s0++ & 0xFF; + if (!ishangul(l, t) && !isuda(l, t) && !ishanja(l, t)) { + *nresult = (size_t)-1; + return (EILSEQ); + } + if (pwc != NULL) + *pwc = (wchar_t)(l << 8 | t); + *nresult = s0 - *s; + *s = s0; + psenc->chlen = 0; + + return (0); +} + +static int +/*ARGSUSED*/ +_citrus_JOHAB_wcrtomb_priv(_JOHABEncodingInfo * __restrict ei __unused, + char * __restrict s, size_t n, wchar_t wc, + _JOHABState * __restrict psenc, size_t * __restrict nresult) +{ + int l, t; + + if (psenc->chlen != 0) + return (EINVAL); + + /* XXX assume wchar_t as int */ + if ((uint32_t)wc <= 0x7F) { + if (n < 1) + goto e2big; + *s = wc & 0xFF; + *nresult = 1; + } else if ((uint32_t)wc <= 0xFFFF) { + if (n < 2) { +e2big: + *nresult = (size_t)-1; + return (E2BIG); + } + l = (wc >> 8) & 0xFF; + t = wc & 0xFF; + if (!ishangul(l, t) && !isuda(l, t) && !ishanja(l, t)) + goto ilseq; + *s++ = l; + *s = t; + *nresult = 2; + } else { +ilseq: + *nresult = (size_t)-1; + return (EILSEQ); + } + return (0); + +} + +static __inline int +/*ARGSUSED*/ +_citrus_JOHAB_stdenc_wctocs(_JOHABEncodingInfo * __restrict ei __unused, + _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc) +{ + int m, l, linear, t; + + /* XXX assume wchar_t as int */ + if ((uint32_t)wc <= 0x7F) { + *idx = (_index_t)wc; + *csid = 0; + } else if ((uint32_t)wc <= 0xFFFF) { + l = (wc >> 8) & 0xFF; + t = wc & 0xFF; + if (ishangul(l, t) || isuda(l, t)) { + *idx = (_index_t)wc; + *csid = 1; + } else { + if (l >= 0xD9 && l <= 0xDE) { + linear = l - 0xD9; + m = 0x21; + } else if (l >= 0xE0 && l <= 0xF9) { + linear = l - 0xE0; + m = 0x4A; + } else + return (EILSEQ); + linear *= 188; + if (t >= 0x31 && t <= 0x7E) + linear += t - 0x31; + else if (t >= 0x91 && t <= 0xFE) + linear += t - 0x43; + else + return (EILSEQ); + l = (linear / 94) + m; + t = (linear % 94) + 0x21; + *idx = (_index_t)((l << 8) | t); + *csid = 2; + } + } else + return (EILSEQ); + return (0); +} + +static __inline int +/*ARGSUSED*/ +_citrus_JOHAB_stdenc_cstowc(_JOHABEncodingInfo * __restrict ei __unused, + wchar_t * __restrict wc, _csid_t csid, _index_t idx) +{ + int m, n, l, linear, t; + + switch (csid) { + case 0: + case 1: + *wc = (wchar_t)idx; + break; + case 2: + if (idx >= 0x2121 && idx <= 0x2C71) { + m = 0xD9; + n = 0x21; + } else if (idx >= 0x4A21 && idx <= 0x7D7E) { + m = 0xE0; + n = 0x4A; + } else + return (EILSEQ); + l = ((idx >> 8) & 0xFF) - n; + t = (idx & 0xFF) - 0x21; + linear = (l * 94) + t; + l = (linear / 188) + m; + t = linear % 188; + t += (t <= 0x4D) ? 0x31 : 0x43; + break; + default: + return (EILSEQ); + } + return (0); +} + +static __inline int +/*ARGSUSED*/ +_citrus_JOHAB_stdenc_get_state_desc_generic(_JOHABEncodingInfo * __restrict ei __unused, + _JOHABState * __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(JOHAB); +_CITRUS_STDENC_DEF_OPS(JOHAB); + +#include "citrus_stdenc_template.h" |
