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Diffstat (limited to 'lib/libc/iconv/citrus_region.h')
-rw-r--r-- | lib/libc/iconv/citrus_region.h | 113 |
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 |