1 files changed, 115 insertions, 0 deletions
diff --git a/lib/libc/locale/cXXrtomb_iconv.h b/lib/libc/locale/cXXrtomb_iconv.h
new file mode 100644
index 000000000000..d6e7ce0ae3ac
--- /dev/null
+++ b/lib/libc/locale/cXXrtomb_iconv.h
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/queue.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <langinfo.h>
+#include <uchar.h>
+
+#include "../iconv/citrus_hash.h"
+#include "../iconv/citrus_module.h"
+#include "../iconv/citrus_iconv.h"
+#include "xlocale_private.h"
+
+typedef struct {
+	bool			initialized;
+	struct _citrus_iconv	iconv;
+	union {
+		charXX_t	widechar[SRCBUF_LEN];
+		char		bytes[sizeof(charXX_t) * SRCBUF_LEN];
+	} srcbuf;
+	size_t			srcbuf_len;
+} _ConversionState;
+_Static_assert(sizeof(_ConversionState) <= sizeof(mbstate_t),
+    "Size of _ConversionState must not exceed mbstate_t's size.");
+
+size_t
+cXXrtomb_l(char * __restrict s, charXX_t c, mbstate_t * __restrict ps,
+    locale_t locale)
+{
+	_ConversionState *cs;
+	struct _citrus_iconv *handle;
+	char *src, *dst;
+	size_t srcleft, dstleft, invlen;
+	int err;
+
+	FIX_LOCALE(locale);
+	if (ps == NULL)
+		ps = &locale->cXXrtomb;
+	cs = (_ConversionState *)ps;
+	handle = &cs->iconv;
+
+	/* Reinitialize mbstate_t. */
+	if (s == NULL || !cs->initialized) {
+		if (_citrus_iconv_open(&handle, UTF_XX_INTERNAL,
+		    nl_langinfo_l(CODESET, locale)) != 0) {
+			cs->initialized = false;
+			errno = EINVAL;
+			return (-1);
+		}
+		handle->cv_shared->ci_discard_ilseq = true;
+		handle->cv_shared->ci_hooks = NULL;
+		cs->srcbuf_len = 0;
+		cs->initialized = true;
+		if (s == NULL)
+			return (1);
+	}
+
+	assert(cs->srcbuf_len < sizeof(cs->srcbuf.widechar) / sizeof(charXX_t));
+	cs->srcbuf.widechar[cs->srcbuf_len++] = c;
+
+	/* Perform conversion. */
+	src = cs->srcbuf.bytes;
+	srcleft = cs->srcbuf_len * sizeof(charXX_t);
+	dst = s;
+	dstleft = MB_CUR_MAX_L(locale);
+	err = _citrus_iconv_convert(handle, &src, &srcleft, &dst, &dstleft,
+	    0, &invlen);
+
+	/* Character is part of a surrogate pair. We need more input. */
+	if (err == EINVAL)
+		return (0);
+	cs->srcbuf_len = 0;
+	
+	/* Illegal sequence. */
+	if (dst == s) {
+		errno = EILSEQ;
+		return ((size_t)-1);
+	}
+	return (dst - s);
+}
+
+size_t
+cXXrtomb(char * __restrict s, charXX_t c, mbstate_t * __restrict ps)
+{
+
+	return (cXXrtomb_l(s, c, ps, __get_locale()));
+}