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-rw-r--r--lib/libiconv_modules/UTF8/citrus_utf8.c349
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diff --git a/lib/libiconv_modules/UTF8/citrus_utf8.c b/lib/libiconv_modules/UTF8/citrus_utf8.c
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+/* $FreeBSD$ */
+/* $NetBSD: citrus_utf8.c,v 1.17 2008/06/14 16:01:08 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) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * 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.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <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_utf8.h"
+
+
+/* ----------------------------------------------------------------------
+ * private stuffs used by templates
+ */
+
+static uint8_t _UTF8_count_array[256] = {
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 00 - 0F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 10 - 1F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 20 - 2F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 30 - 3F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 40 - 4F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 50 - 5F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 60 - 6F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 70 - 7F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* C0 - CF */
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* D0 - DF */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* E0 - EF */
+ 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0 /* F0 - FF */
+};
+
+static uint8_t const *_UTF8_count = _UTF8_count_array;
+
+static const uint32_t _UTF8_range[] = {
+ 0, /*dummy*/
+ 0x00000000, 0x00000080, 0x00000800, 0x00010000,
+ 0x00200000, 0x04000000, 0x80000000,
+};
+
+typedef struct {
+ int chlen;
+ char ch[6];
+} _UTF8State;
+
+typedef void *_UTF8EncodingInfo;
+
+#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
+#define _CEI_TO_STATE(_ei_, _func_) (_ei_)->states.s_##_func_
+
+#define _FUNCNAME(m) _citrus_UTF8_##m
+#define _ENCODING_INFO _UTF8EncodingInfo
+#define _ENCODING_STATE _UTF8State
+#define _ENCODING_MB_CUR_MAX(_ei_) 6
+#define _ENCODING_IS_STATE_DEPENDENT 0
+#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
+
+static size_t
+_UTF8_findlen(wchar_t v)
+{
+ size_t i;
+ uint32_t c;
+
+ c = (uint32_t)v; /*XXX*/
+ for (i = 1; i < sizeof(_UTF8_range) / sizeof(_UTF8_range[0]) - 1; i++)
+ if (c >= _UTF8_range[i] && c < _UTF8_range[i + 1])
+ return (i);
+
+ return (-1); /*out of range*/
+}
+
+static __inline bool
+_UTF8_surrogate(wchar_t wc)
+{
+
+ return (wc >= 0xd800 && wc <= 0xdfff);
+}
+
+static __inline void
+/*ARGSUSED*/
+_citrus_UTF8_init_state(_UTF8EncodingInfo *ei __unused, _UTF8State *s)
+{
+
+ s->chlen = 0;
+}
+
+static __inline void
+/*ARGSUSED*/
+_citrus_UTF8_pack_state(_UTF8EncodingInfo *ei __unused, void *pspriv,
+ const _UTF8State *s)
+{
+
+ memcpy(pspriv, (const void *)s, sizeof(*s));
+}
+
+static __inline void
+/*ARGSUSED*/
+_citrus_UTF8_unpack_state(_UTF8EncodingInfo *ei __unused, _UTF8State *s,
+ const void *pspriv)
+{
+
+ memcpy((void *)s, pspriv, sizeof(*s));
+}
+
+static int
+_citrus_UTF8_mbrtowc_priv(_UTF8EncodingInfo *ei, wchar_t *pwc, char **s,
+ size_t n, _UTF8State *psenc, size_t *nresult)
+{
+ char *s0;
+ wchar_t wchar;
+ int i;
+ uint8_t c;
+
+ s0 = *s;
+
+ if (s0 == NULL) {
+ _citrus_UTF8_init_state(ei, psenc);
+ *nresult = 0; /* state independent */
+ return (0);
+ }
+
+ /* make sure we have the first byte in the buffer */
+ if (psenc->chlen == 0) {
+ if (n-- < 1)
+ goto restart;
+ psenc->ch[psenc->chlen++] = *s0++;
+ }
+
+ c = _UTF8_count[psenc->ch[0] & 0xff];
+ if (c < 1 || c < psenc->chlen)
+ goto ilseq;
+
+ if (c == 1)
+ wchar = psenc->ch[0] & 0xff;
+ else {
+ while (psenc->chlen < c) {
+ if (n-- < 1)
+ goto restart;
+ psenc->ch[psenc->chlen++] = *s0++;
+ }
+ wchar = psenc->ch[0] & (0x7f >> c);
+ for (i = 1; i < c; i++) {
+ if ((psenc->ch[i] & 0xc0) != 0x80)
+ goto ilseq;
+ wchar <<= 6;
+ wchar |= (psenc->ch[i] & 0x3f);
+ }
+ if (_UTF8_surrogate(wchar) || _UTF8_findlen(wchar) != c)
+ goto ilseq;
+ }
+ if (pwc != NULL)
+ *pwc = wchar;
+ *nresult = (wchar == 0) ? 0 : s0 - *s;
+ *s = s0;
+ psenc->chlen = 0;
+
+ return (0);
+
+ilseq:
+ *nresult = (size_t)-1;
+ return (EILSEQ);
+
+restart:
+ *s = s0;
+ *nresult = (size_t)-2;
+ return (0);
+}
+
+static int
+_citrus_UTF8_wcrtomb_priv(_UTF8EncodingInfo *ei __unused, char *s, size_t n,
+ wchar_t wc, _UTF8State *psenc __unused, size_t *nresult)
+{
+ wchar_t c;
+ size_t cnt;
+ int i, ret;
+
+ if (_UTF8_surrogate(wc)) {
+ ret = EILSEQ;
+ goto err;
+ }
+ cnt = _UTF8_findlen(wc);
+ if (cnt <= 0 || cnt > 6) {
+ /* invalid UCS4 value */
+ ret = EILSEQ;
+ goto err;
+ }
+ if (n < cnt) {
+ /* bound check failure */
+ ret = E2BIG;
+ goto err;
+ }
+
+ c = wc;
+ if (s) {
+ for (i = cnt - 1; i > 0; i--) {
+ s[i] = 0x80 | (c & 0x3f);
+ c >>= 6;
+ }
+ s[0] = c;
+ if (cnt == 1)
+ s[0] &= 0x7f;
+ else {
+ s[0] &= (0x7f >> cnt);
+ s[0] |= ((0xff00 >> cnt) & 0xff);
+ }
+ }
+
+ *nresult = (size_t)cnt;
+ return (0);
+
+err:
+ *nresult = (size_t)-1;
+ return (ret);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_UTF8_stdenc_wctocs(_UTF8EncodingInfo * __restrict ei __unused,
+ _csid_t * __restrict csid, _index_t * __restrict idx,
+ wchar_t wc)
+{
+
+ *csid = 0;
+ *idx = (_citrus_index_t)wc;
+
+ return (0);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_UTF8_stdenc_cstowc(_UTF8EncodingInfo * __restrict ei __unused,
+ wchar_t * __restrict wc, _csid_t csid, _index_t idx)
+{
+
+ if (csid != 0)
+ return (EILSEQ);
+
+ *wc = (wchar_t)idx;
+
+ return (0);
+}
+
+static __inline int
+/*ARGSUSED*/
+_citrus_UTF8_stdenc_get_state_desc_generic(_UTF8EncodingInfo * __restrict ei __unused,
+ _UTF8State * __restrict psenc, int * __restrict rstate)
+{
+
+ *rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
+ _STDENC_SDGEN_INCOMPLETE_CHAR;
+ return (0);
+}
+
+static int
+/*ARGSUSED*/
+_citrus_UTF8_encoding_module_init(_UTF8EncodingInfo * __restrict ei __unused,
+ const void * __restrict var __unused, size_t lenvar __unused)
+{
+
+ return (0);
+}
+
+static void
+/*ARGSUSED*/
+_citrus_UTF8_encoding_module_uninit(_UTF8EncodingInfo *ei __unused)
+{
+
+}
+
+/* ----------------------------------------------------------------------
+ * public interface for stdenc
+ */
+
+_CITRUS_STDENC_DECLS(UTF8);
+_CITRUS_STDENC_DEF_OPS(UTF8);
+
+#include "citrus_stdenc_template.h"
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