1 files changed, 113 insertions, 0 deletions
diff --git a/lib/libc/iconv/citrus_region.h b/lib/libc/iconv/citrus_region.h
new file mode 100644
index 0000000..8cecb40
--- /dev/null
+++ b/lib/libc/iconv/citrus_region.h
@@ -0,0 +1,113 @@
+/* $FreeBSD$ */
+/* $NetBSD: citrus_region.h,v 1.7 2008/02/09 14:56:20 junyoung Exp $ */
+
+/*-
+ * Copyright (c)2003 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.
+ *
+ */
+
+#ifndef _CITRUS_REGION_H_
+#define _CITRUS_REGION_H_
+
+#include <sys/types.h>
+
+struct _citrus_region {
+	void	*r_head;
+	size_t	 r_size;
+};
+
+static __inline void
+_citrus_region_init(struct _citrus_region *r, void *h, size_t sz)
+{
+
+	r->r_head = h;
+	r->r_size = sz;
+}
+
+static __inline void *
+_citrus_region_head(const struct _citrus_region *r)
+{
+
+	return (r->r_head);
+}
+
+static __inline size_t
+_citrus_region_size(const struct _citrus_region *r)
+{
+
+	return (r->r_size);
+}
+
+static __inline int
+_citrus_region_check(const struct _citrus_region *r, size_t ofs, size_t sz)
+{
+
+	return (r->r_size >= ofs + sz ? 0 : -1);
+}
+
+static __inline void *
+_citrus_region_offset(const struct _citrus_region *r, size_t pos)
+{
+
+	return ((void *)((uint8_t *)r->r_head + pos));
+}
+
+static __inline uint8_t
+_citrus_region_peek8(const struct _citrus_region *r, size_t pos)
+{
+
+	return (*(uint8_t *)_citrus_region_offset(r, pos));
+}
+
+static __inline uint16_t
+_citrus_region_peek16(const struct _citrus_region *r, size_t pos)
+{
+	uint16_t val;
+
+	memcpy(&val, _citrus_region_offset(r, pos), (size_t)2);
+	return (val);
+}
+
+static __inline uint32_t
+_citrus_region_peek32(const struct _citrus_region *r, size_t pos)
+{
+	uint32_t val;
+
+	memcpy(&val, _citrus_region_offset(r, pos), (size_t)4);
+	return (val);
+}
+
+static __inline int
+_citrus_region_get_subregion(struct _citrus_region *subr,
+    const struct _citrus_region *r, size_t ofs, size_t sz)
+{
+
+	if (_citrus_region_check(r, ofs, sz))
+		return (-1);
+	_citrus_region_init(subr, _citrus_region_offset(r, ofs), sz);
+	return (0);
+}
+
+#endif