328 lines
11 KiB
C
328 lines
11 KiB
C
/*
|
|
* Copyright (c) 2003-2004, Artem B. Bityuckiy
|
|
* Copyright (c) 1999,2000, Konstantin Chuguev. 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 __ICONV_UCS_CONVERSION_H__
|
|
#define __ICONV_UCS_CONVERSION_H__
|
|
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <sys/types.h>
|
|
#include <wchar.h>
|
|
#include "local.h"
|
|
|
|
/* No enough space in output buffer */
|
|
#define ICONV_CES_NOSPACE 0
|
|
/* Invalid input character */
|
|
#define ICONV_CES_INVALID_CHARACTER -1
|
|
/* No corespondent character in destination encoding */
|
|
#define ICONV_CES_BAD_SEQUENCE -2
|
|
/* All unknown characters are marked by this code */
|
|
#define DEFAULT_CHARACTER 0x3f /* ASCII '?' */
|
|
|
|
|
|
/*
|
|
* iconv_to_ucs_ces_handlers_t - "to UCS" CES converter handlers.
|
|
*
|
|
* Structure contains function pointers which should be provided by
|
|
* "to_ucs" CES converter.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/*
|
|
* init - initialize CES converter.
|
|
*
|
|
* PARAMETERS:
|
|
* struct _reent *rptr - reent structure of current thread/process;
|
|
* _CONST char *encoding - encoding name.
|
|
*
|
|
* DESCRIPTION:
|
|
* Initializes CES converter. CES converter may deal with a series of
|
|
* encodings, such as Table or EUC CES converters. 'encoding' parameter
|
|
* indicates which encoding CES converter should use.
|
|
*
|
|
* RETURN:
|
|
* Returns CES-specific data pointer if success. In case of error returns
|
|
* NULL and sets current thread's/process's errno.
|
|
*/
|
|
_VOID_PTR _EXPARM(init, (struct _reent *rptr,
|
|
_CONST char *encoding));
|
|
|
|
/*
|
|
* close - close CES converter.
|
|
*
|
|
* PARAMETERS:
|
|
* struct _reent *rptr - reent structure of current thread/process;
|
|
* _VOID_PTR data - CES converter-specific data.
|
|
*
|
|
* DESCRIPTION:
|
|
* Preforms CES converter closing. *
|
|
* RETURN:
|
|
* Returns (size_t)0 if success. In case of error returns (size_t)-1 and
|
|
* sets current thread's/process's errno.
|
|
*/
|
|
size_t _EXPARM(close, (struct _reent *rptr,
|
|
_VOID_PTR data));
|
|
|
|
/*
|
|
* get_mb_cur_max - get maximum character length in bytes.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns encoding's maximum character length.
|
|
*/
|
|
int _EXPARM(get_mb_cur_max, (_VOID_PTR data));
|
|
|
|
/*
|
|
* get_state - get current shift state.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* mbstate_t *state - mbstate_t object where shift state will be stored;
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns encoding's current shift sequence.
|
|
*/
|
|
_VOID _EXPARM(get_state, (_VOID_PTR data,
|
|
mbstate_t *state));
|
|
|
|
/*
|
|
* set_state - set shift state.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
* mbstate_t *state - mbstate_t value to which shift state will be set.
|
|
*
|
|
* DESCRIPTION:
|
|
* Sets encoding's current shift state to 'state'. if 'state'
|
|
* object is zero-object - reset current shift state.
|
|
* Returns 0 if '*state' object has right format, -1 else.
|
|
*/
|
|
int _EXPARM(set_state, (_VOID_PTR data,
|
|
mbstate_t *state));
|
|
|
|
/*
|
|
* is_stateful - is encoding stateful state.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - conversion-specific data;
|
|
*
|
|
* DESCRIPTION:
|
|
* Returns 0 if encoding is stateless, else returns 1.
|
|
*/
|
|
int _EXPARM(is_stateful, (_VOID_PTR data));
|
|
|
|
/*
|
|
* convert_to_ucs - convert character to UCS.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - CES converter-specific data;
|
|
* _CONST unsigned char **inbuf - buffer with input character byte sequence;
|
|
* size_t *inbytesleft - output buffer bytes count.
|
|
*
|
|
* DESCRIPTION:
|
|
* Converts input characters into UCS encoding. 'inbuf' is
|
|
* incremented accordingly. 'bytesleft' is decremented accordingly. Should
|
|
* be provided by correspondent CES module.
|
|
*
|
|
* RETURN:
|
|
* Returns resulting UCS code if success. If input character is invalid,
|
|
* returns ICONV_CES_INVALID_CHARACTER. If invalid or incomplete bytes
|
|
* sequence was met, returns ICONV_CES_BAD_SEQUENCE.
|
|
*/
|
|
ucs4_t _EXPARM(convert_to_ucs, (_VOID_PTR data,
|
|
_CONST unsigned char **inbuf,
|
|
size_t *inbytesleft));
|
|
} iconv_to_ucs_ces_handlers_t;
|
|
|
|
|
|
/*
|
|
* iconv_from_ucs_ces_handlers_t - "from UCS" CES converter handlers.
|
|
*
|
|
* Structure contains function pointers which should be provided by
|
|
* "from_ucs" CES converter.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
_VOID_PTR _EXPARM(init, (struct _reent *rptr,
|
|
_CONST char *encoding));
|
|
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
size_t _EXPARM(close, (struct _reent *rptr,
|
|
_VOID_PTR data));
|
|
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
int _EXPARM(get_mb_cur_max, (_VOID_PTR data));
|
|
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
_VOID _EXPARM(get_state, (_VOID_PTR data,
|
|
mbstate_t *state));
|
|
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
int _EXPARM(set_state, (_VOID_PTR data,
|
|
mbstate_t *state));
|
|
|
|
/* Same as in iconv_to_ucs_ces_handlers_t */
|
|
int _EXPARM(is_stateful, (_VOID_PTR data));
|
|
|
|
/*
|
|
* convert_from_ucs - convert UCS character to destination encoding.
|
|
*
|
|
* PARAMETERS:
|
|
* _VOID_PTR data - CES converter-specific data;
|
|
* ucs4_t in - input UCS-4 character;
|
|
* unsigned char **outbuf - output buffer for the result;
|
|
* size_t *outbytesleft - output buffer bytes count.
|
|
*
|
|
* DESCRIPTION:
|
|
* Converts input UCS characters to destination encoding and stores result
|
|
* in 'outbuf' if there is sufficient free space present. 'outbuf' is
|
|
* incremented accordingly. 'outbytesleft' is decremented accordingly. Should
|
|
* be provided by correspondent CES module.
|
|
* Output buffer always has at least 1 byte.
|
|
*
|
|
* RETURN:
|
|
* Returns number of bytes that was written into output buffer if success.
|
|
* If there is no enough space in output buffer, returns ICONV_CES_NOSPACE.
|
|
* If there is no corresponding character in destination encoding, returns
|
|
* ICONV_CES_INVALID_CHARACTER.
|
|
*/
|
|
size_t _EXPARM(convert_from_ucs, (_VOID_PTR data,
|
|
ucs4_t in,
|
|
unsigned char **outbuf,
|
|
size_t *outbytesleft));
|
|
} iconv_from_ucs_ces_handlers_t;
|
|
|
|
|
|
/*
|
|
* iconv_to_ucs_ces_desc_t - "to UCS" CES converter definition structure for
|
|
* usage in iconv_ucs_conversion_t conversion description structure.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/* CES converter handlers */
|
|
_CONST iconv_to_ucs_ces_handlers_t *handlers;
|
|
|
|
/* "to_ucs" CES converter-specific data. */
|
|
_VOID_PTR data;
|
|
} iconv_to_ucs_ces_desc_t;
|
|
|
|
|
|
/*
|
|
* iconv_from_ucs_ces_desc_t - "from UCS" CES converter definition structure for
|
|
* usage in iconv_ucs_conversion_t conversion description structure.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/* CES converter handlers */
|
|
_CONST iconv_from_ucs_ces_handlers_t *handlers;
|
|
|
|
/* "from_ucs" CES converter-specific data. */
|
|
_VOID_PTR data;
|
|
} iconv_from_ucs_ces_desc_t;
|
|
|
|
|
|
/*
|
|
* iconv_ucs_conversion_t - UCS-based conversion definition structure.
|
|
*
|
|
* Defines special type of conversion where every character is first
|
|
* converted into UCS-4 (UCS-2 for table-driven), and after this the
|
|
* resulting UCS character is converted to destination encoding.
|
|
* UCS-based conversion is composed of two *converters*, defined by
|
|
* iconv_ces_t structure. The iconv_ucs_conversion_t object is referred
|
|
* from iconv_conversion_t object using 'data' field.
|
|
*
|
|
* Structure contains two objects - 'to_ucs' and 'from_ucs' which define
|
|
* "source encoding to UCS" and "UCS to destination encoding" converters.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/* Source encoding -> CES converter. */
|
|
iconv_to_ucs_ces_desc_t to_ucs;
|
|
|
|
/* UCS -> destination encoding CES converter. */
|
|
iconv_from_ucs_ces_desc_t from_ucs;
|
|
} iconv_ucs_conversion_t;
|
|
|
|
|
|
/*
|
|
* iconv_to_ucs_ces_t - defines "to UCS" CES converter.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/*
|
|
* An array of encodings names, supported by CES converter.
|
|
* The end of array should be marked by NULL pointer.
|
|
*/
|
|
_CONST char **names;
|
|
|
|
/* CES converter description structure */
|
|
_CONST iconv_to_ucs_ces_handlers_t *handlers;
|
|
} iconv_to_ucs_ces_t;
|
|
|
|
|
|
/*
|
|
* iconv_from_ucs_ces_t - defines "from UCS" CES converter.
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
typedef struct
|
|
{
|
|
/*
|
|
* An array of encodings names, supported by CES converter.
|
|
* The end of array should be marked by NULL pointer.
|
|
*/
|
|
_CONST char **names;
|
|
|
|
/* CES converter description structure */
|
|
_CONST iconv_from_ucs_ces_handlers_t *handlers;
|
|
} iconv_from_ucs_ces_t;
|
|
|
|
|
|
/* List of "to UCS" linked-in CES converters. */
|
|
extern _CONST iconv_to_ucs_ces_t
|
|
_iconv_to_ucs_ces[];
|
|
|
|
/* List of "from UCS" linked-in CES converters. */
|
|
extern _CONST iconv_from_ucs_ces_t
|
|
_iconv_from_ucs_ces[];
|
|
|
|
#endif /* !__ICONV_UCS_CONVERSION_H__ */
|
|
|