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-rw-r--r--lib/libiconv_modules/DECHanyu/citrus_dechanyu.c392
1 files changed, 392 insertions, 0 deletions
diff --git a/lib/libiconv_modules/DECHanyu/citrus_dechanyu.c b/lib/libiconv_modules/DECHanyu/citrus_dechanyu.c
new file mode 100644
index 0000000..0801ac9
--- /dev/null
+++ b/lib/libiconv_modules/DECHanyu/citrus_dechanyu.c
@@ -0,0 +1,392 @@
+/* $FreeBSD$ */
+/* $NetBSD: citrus_dechanyu.c,v 1.3 2008/06/14 16:01:07 tnozaki Exp $ */
+
+/*-
+ * Copyright (c)2007 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 <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_dechanyu.h"
+
+/* ----------------------------------------------------------------------
+ * private stuffs used by templates
+ */
+
+typedef struct {
+ size_t chlen;
+ char ch[4];
+} _DECHanyuState;
+
+typedef struct {
+ int dummy;
+} _DECHanyuEncodingInfo;
+
+#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
+#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.__CONCAT(s_,_func_)
+
+#define _FUNCNAME(m) __CONCAT(_citrus_DECHanyu_,m)
+#define _ENCODING_INFO _DECHanyuEncodingInfo
+#define _ENCODING_STATE _DECHanyuState
+#define _ENCODING_MB_CUR_MAX(_ei_) 4
+#define _ENCODING_IS_STATE_DEPENDENT 0
+#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
+
+static __inline void
+/*ARGSUSED*/
+_citrus_DECHanyu_init_state(_DECHanyuEncodingInfo * __restrict ei __unused,
+ _DECHanyuState * __restrict psenc)
+{
+
+ psenc->chlen = 0;
+}
+
+static __inline void
+/*ARGSUSED*/
+_citrus_DECHanyu_pack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
+ void * __restrict pspriv, const _DECHanyuState * __restrict psenc)
+{
+
+ memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
+}
+
+static __inline void
+/*ARGSUSED*/
+_citrus_DECHanyu_unpack_state(_DECHanyuEncodingInfo * __restrict ei __unused,
+ _DECHanyuState * __restrict psenc,
+ const void * __restrict pspriv)
+{
+
+ memcpy((void *)psenc, pspriv, sizeof(*psenc));
+}
+
+static void
+/*ARGSUSED*/
+_citrus_DECHanyu_encoding_module_uninit(_DECHanyuEncodingInfo *ei __unused)
+{
+
+ /* ei may be null */
+}
+
+static int
+/*ARGSUSED*/
+_citrus_DECHanyu_encoding_module_init(_DECHanyuEncodingInfo * __restrict ei __unused,
+ const void * __restrict var __unused, size_t lenvar __unused)
+{
+
+ /* ei may be null */
+ return (0);
+}
+
+static __inline bool
+is_singlebyte(int c)
+{
+
+ return (c <= 0x7F);
+}
+
+static __inline bool
+is_leadbyte(int c)
+{
+
+ return (c >= 0xA1 && c <= 0xFE);
+}
+
+static __inline bool
+is_trailbyte(int c)
+{
+
+ c &= ~0x80;
+ return (c >= 0x21 && c <= 0x7E);
+}
+
+static __inline bool
+is_hanyu1(int c)
+{
+
+ return (c == 0xC2);
+}
+
+static __inline bool
+is_hanyu2(int c)
+{
+
+ return (c == 0xCB);
+}
+
+#define HANYUBIT 0xC2CB0000
+
+static __inline bool
+is_94charset(int c)
+{
+
+ return (c >= 0x21 && c <= 0x7E);
+}
+
+static int
+/*ARGSUSED*/
+_citrus_DECHanyu_mbrtowc_priv(_DECHanyuEncodingInfo * __restrict ei,
+ wchar_t * __restrict pwc, char ** __restrict s, size_t n,
+ _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
+{
+ char *s0;
+ wchar_t wc;
+ int ch;
+
+ if (*s == NULL) {
+ _citrus_DECHanyu_init_state(ei, psenc);
+ *nresult = _ENCODING_IS_STATE_DEPENDENT;
+ return (0);
+ }
+ s0 = *s;
+
+ wc = (wchar_t)0;
+ switch (psenc->chlen) {
+ case 0:
+ if (n-- < 1)
+ goto restart;
+ ch = *s0++ & 0xFF;
+ if (is_singlebyte(ch)) {
+ if (pwc != NULL)
+ *pwc = (wchar_t)ch;
+ *nresult = (size_t)((ch == 0) ? 0 : 1);
+ *s = s0;
+ return (0);
+ }
+ if (!is_leadbyte(ch))
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = ch;
+ break;
+ case 1:
+ ch = psenc->ch[0] & 0xFF;
+ if (!is_leadbyte(ch))
+ return (EINVAL);
+ break;
+ case 2: case 3:
+ ch = psenc->ch[0] & 0xFF;
+ if (is_hanyu1(ch)) {
+ ch = psenc->ch[1] & 0xFF;
+ if (is_hanyu2(ch)) {
+ wc |= (wchar_t)HANYUBIT;
+ break;
+ }
+ }
+ /*FALLTHROUGH*/
+ default:
+ return (EINVAL);
+ }
+
+ switch (psenc->chlen) {
+ case 1:
+ if (is_hanyu1(ch)) {
+ if (n-- < 1)
+ goto restart;
+ ch = *s0++ & 0xFF;
+ if (!is_hanyu2(ch))
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = ch;
+ wc |= (wchar_t)HANYUBIT;
+ if (n-- < 1)
+ goto restart;
+ ch = *s0++ & 0xFF;
+ if (!is_leadbyte(ch))
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = ch;
+ }
+ break;
+ case 2:
+ if (n-- < 1)
+ goto restart;
+ ch = *s0++ & 0xFF;
+ if (!is_leadbyte(ch))
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = ch;
+ break;
+ case 3:
+ ch = psenc->ch[2] & 0xFF;
+ if (!is_leadbyte(ch))
+ return (EINVAL);
+ }
+ if (n-- < 1)
+ goto restart;
+ wc |= (wchar_t)(ch << 8);
+ ch = *s0++ & 0xFF;
+ if (!is_trailbyte(ch))
+ goto ilseq;
+ wc |= (wchar_t)ch;
+ if (pwc != NULL)
+ *pwc = wc;
+ *nresult = (size_t)(s0 - *s);
+ *s = s0;
+ psenc->chlen = 0;
+
+ return (0);
+
+restart:
+ *nresult = (size_t)-2;
+ *s = s0;
+ return (0);
+
+ilseq:
+ *nresult = (size_t)-1;
+ return (EILSEQ);
+}
+
+static int
+/*ARGSUSED*/
+_citrus_DECHanyu_wcrtomb_priv(_DECHanyuEncodingInfo * __restrict ei __unused,
+ char * __restrict s, size_t n, wchar_t wc,
+ _DECHanyuState * __restrict psenc, size_t * __restrict nresult)
+{
+ int ch;
+
+ if (psenc->chlen != 0)
+ return (EINVAL);
+
+ /* XXX: assume wchar_t as int */
+ if ((uint32_t)wc <= 0x7F) {
+ ch = wc & 0xFF;
+ } else {
+ if ((uint32_t)wc > 0xFFFF) {
+ if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = (wc >> 24) & 0xFF;
+ psenc->ch[psenc->chlen++] = (wc >> 16) & 0xFF;
+ wc &= 0xFFFF;
+ }
+ ch = (wc >> 8) & 0xFF;
+ if (!is_leadbyte(ch))
+ goto ilseq;
+ psenc->ch[psenc->chlen++] = ch;
+ ch = wc & 0xFF;
+ if (!is_trailbyte(ch))
+ goto ilseq;
+ }
+ psenc->ch[psenc->chlen++] = ch;
+ if (n < psenc->chlen) {
+ *nresult = (size_t)-1;
+ return (E2BIG);
+ }
+ memcpy(s, psenc->ch, psenc->chlen);
+ *nresult = psenc->chlen;
+ psenc->chlen = 0;
+
+ return (0);
+
+ilseq:
+ *nresult = (size_t)-1;
+ return (EILSEQ);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_DECHanyu_stdenc_wctocs(_DECHanyuEncodingInfo * __restrict ei __unused,
+ _csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
+{
+ wchar_t mask;
+ int plane;
+
+ plane = 0;
+ mask = 0x7F;
+ /* XXX: assume wchar_t as int */
+ if ((uint32_t)wc > 0x7F) {
+ if ((uint32_t)wc > 0xFFFF) {
+ if ((wc & ~0xFFFF) != (wchar_t)HANYUBIT)
+ return (EILSEQ);
+ plane += 2;
+ }
+ if (!is_leadbyte((wc >> 8) & 0xFF) ||
+ !is_trailbyte(wc & 0xFF))
+ return (EILSEQ);
+ plane += (wc & 0x80) ? 1 : 2;
+ mask |= 0x7F00;
+ }
+ *csid = plane;
+ *idx = (_index_t)(wc & mask);
+
+ return (0);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_DECHanyu_stdenc_cstowc(_DECHanyuEncodingInfo * __restrict ei __unused,
+ wchar_t * __restrict wc, _csid_t csid, _index_t idx)
+{
+
+ if (csid == 0) {
+ if (idx > 0x7F)
+ return (EILSEQ);
+ } else if (csid <= 4) {
+ if (!is_94charset(idx >> 8))
+ return (EILSEQ);
+ if (!is_94charset(idx & 0xFF))
+ return (EILSEQ);
+ if (csid % 2)
+ idx |= 0x80;
+ idx |= 0x8000;
+ if (csid > 2)
+ idx |= HANYUBIT;
+ } else
+ return (EILSEQ);
+ *wc = (wchar_t)idx;
+ return (0);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_DECHanyu_stdenc_get_state_desc_generic(
+ _DECHanyuEncodingInfo * __restrict ei __unused,
+ _DECHanyuState * __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(DECHanyu);
+_CITRUS_STDENC_DEF_OPS(DECHanyu);
+
+#include "citrus_stdenc_template.h"
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