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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_KICONV_CCK_COMMON_H
#define _SYS_KICONV_CCK_COMMON_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
/* The start value of leading byte of EUC encoding. */
#define KICONV_EUC_START (0xA1)
/* Valid EUC range or not. */
#define KICONV_IS_VALID_EUC_BYTE(v) ((v) >= 0xA1 && (v) <= 0xFE)
/* Is ASCII character or not: 0x00 - 0x7F. */
#define KICONV_IS_ASCII(c) (((uchar_t)(c)) <= 0x7F)
/* UTF-8 replacement character for non-identicals and its length. */
#define KICONV_UTF8_REPLACEMENT_CHAR1 (0xEF)
#define KICONV_UTF8_REPLACEMENT_CHAR2 (0xBF)
#define KICONV_UTF8_REPLACEMENT_CHAR3 (0xBD)
#define KICONV_UTF8_REPLACEMENT_CHAR (0xefbfbd)
#define KICONV_UTF8_REPLACEMENT_CHAR_LEN (3)
/*
* Whether the 2nd byte of 3 or 4 bytes UTF-8 character is invalid or not.
*/
#define KICONV_IS_INVALID_UTF8_SECOND_BYTE(second, first) \
((second) < u8_valid_min_2nd_byte[(first)] || \
(second) > u8_valid_max_2nd_byte[(first)])
/*
* If we haven't checked on the UTF-8 signature BOM character in
* the beginning of the conversion data stream, we check it and if
* find one, we skip it since we have no use for it.
*/
#define KICONV_CHECK_UTF8_BOM(ib, ibtail) \
if (((kiconv_state_t)kcd)->bom_processed == 0 && \
((ibtail) - (ib)) >= 3 && *(ib) == 0xef && \
*((ib) + 1) == 0xbb && *((ib) + 2) == 0xbf) { \
(ib) += 3; \
} \
((kiconv_state_t)kcd)->bom_processed = 1
/*
* Check BOM of UTF-8 without state information.
*/
#define KICONV_CHECK_UTF8_BOM_WITHOUT_STATE(ib, ibtail) \
if (((ibtail) - (ib)) >= 3 && *(ib) == 0xef && \
*((ib) + 1) == 0xbb && *((ib) + 2) == 0xbf) { \
(ib) += 3; \
}
/*
* Set errno and break.
*/
#define KICONV_SET_ERRNO_AND_BREAK(err) \
*errno = (err); \
ret_val = (size_t)-1; \
break
/*
* Handling flag, advance input buffer, set errno and break.
*/
#define KICONV_SET_ERRNO_WITH_FLAG(advance, err) \
if (flag & KICONV_REPLACE_INVALID) { \
ib += (advance); \
goto REPLACE_INVALID; \
} \
KICONV_SET_ERRNO_AND_BREAK((err))
/* Conversion table for UTF-8 -> CCK encoding. */
typedef struct {
uint32_t key;
uint32_t value;
} kiconv_table_t;
/* Conversion table for CCK encoding -> utf8. */
typedef struct {
uint32_t key;
uchar_t u8[4];
} kiconv_table_array_t;
/*
* Function prototype for UTF-8 -> GB18030/BIG5/EUC-TW/UHC...
* Currently parameter ib/ibtail are used by BIG5HKSCS only.
*/
typedef int8_t (*kiconv_utf8tocck_t)(uint32_t utf8, uchar_t **ib,
uchar_t *ibtail, uchar_t *ob, uchar_t *obtail, size_t *ret_val);
/* Common open and close function for UTF-8 to CCK conversion. */
void * kiconv_open_to_cck(void);
int kiconv_close_to_cck(void *);
/* Binary search funciton. */
size_t kiconv_binsearch(uint32_t key, void *tbl, size_t nitems);
/* Wrapper for conversion from UTF-8 to GB18030/BIG5/EUC-TW/UHC... */
size_t kiconv_utf8_to_cck(void *kcd, char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft, int *errno,
kiconv_utf8tocck_t ptr_utf8tocck);
/*
* Wrapper for string based conversion from UTF-8 to GB18030/BIG5/EUC-TW/UHC...
*/
size_t kiconvstr_utf8_to_cck(uchar_t *inarray, size_t *inlen,
uchar_t *outarray, size_t *outlen, int flag, int *errno,
kiconv_utf8tocck_t ptr_utf8tocck);
/*
* The following tables are coming from u8_textprep.c. We use them to
* check on validity of UTF-8 characters and their bytes.
*/
extern const int8_t u8_number_of_bytes[];
extern const uint8_t u8_valid_min_2nd_byte[];
extern const uint8_t u8_valid_max_2nd_byte[];
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_KICONV_CCK_COMMON_H */
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