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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [iconv/] [lib/] [ucsconv.h] - Rev 551
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/* * 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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(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 _EXFNPTR(init, (struct _reent *rptr, _CONST char *encoding)); /* Same as in iconv_to_ucs_ces_handlers_t */ size_t _EXFNPTR(close, (struct _reent *rptr, _VOID_PTR data)); /* Same as in iconv_to_ucs_ces_handlers_t */ int _EXFNPTR(get_mb_cur_max, (_VOID_PTR data)); /* Same as in iconv_to_ucs_ces_handlers_t */ _VOID _EXFNPTR(get_state, (_VOID_PTR data, mbstate_t *state)); /* Same as in iconv_to_ucs_ces_handlers_t */ int _EXFNPTR(set_state, (_VOID_PTR data, mbstate_t *state)); /* Same as in iconv_to_ucs_ces_handlers_t */ int _EXFNPTR(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 _EXFNPTR(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__ */
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