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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [iconv/] [ccs/] [ccs.h] - Blame information for rev 148

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Line No. Rev Author Line
1 148 jeremybenn
/*
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 * Copyright (c) 2003-2004, Artem B. Bityuckiy
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#ifndef __CCS_H__
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#define __CCS_H__
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#include <_ansi.h>
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#include <sys/types.h>
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#include <sys/param.h>
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/*
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 * Size-optimized tables will be linked instead of speed-optimized if
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 * TABLE_USE_SIZE_OPTIMISATION macro is defined.
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 */
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#if defined (PREFER_SIZE_OVER_SPEED) || defined (__OPTIMIZE_SIZE__)
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#  define TABLE_USE_SIZE_OPTIMIZATION
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#endif
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/* Invalid code marker */
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#define INVALC  0xFFFF
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/* Invalid block marker - marks empty blocks in speed-optimized tables */
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#define INVBLK  0xFFFF
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/* Lost code marker - marks codes that was lost during CCS->UCS mapping */
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#define LOST_C DEFAULT_CHARACTER
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/*
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 * Table parameters values.
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 */
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/* Table version 1.0 identifier */
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#define TABLE_VERSION_1 1
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/* 8 and 16 bit tables identifiers */
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#define TABLE_8BIT  8
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#define TABLE_16BIT 16
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/* Size-optimized and speed-optimized tables identifiers */
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#define TABLE_SIZE_OPTIMIZED  1
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#define TABLE_SPEED_OPTIMIZED 2
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/* Built-in/external tables identifiers */
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#define TABLE_BUILTIN  1
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#define TABLE_EXTERNAL 2
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/*
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 * Binary table fields.
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 */
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/* "No table" marker */
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#define EXTTABLE_NO_TABLE 0
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/* Version offset (2 bytes) */
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#define EXTTABLE_VERSION_OFF 0
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/* Bits number offset (2 bytes) */
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#define EXTTABLE_BITS_OFF 2
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/* CCS name length offset (2 bytes) */
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#define EXTTABLE_CCSNAME_LEN_OFF 4
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/* CCS name offset (expanded to even bytes number)*/
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#define EXTTABLE_CCSNAME_OFF 8
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/* Header length (minus CCS name) */
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#define EXTTABLE_HEADER_LEN (EXTTABLE_CCSNAME_OFF + 16*4)
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/* Tables and lengths offsets minus CCS name length (4 bytes) */
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#define EXTTABLE_FROM_SPEED_BE_OFF     (EXTTABLE_CCSNAME_OFF + 0)
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#define EXTTABLE_FROM_SPEED_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 4)
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#define EXTTABLE_FROM_SPEED_LE_OFF     (EXTTABLE_CCSNAME_OFF + 8)
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#define EXTTABLE_FROM_SPEED_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 12)
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#define EXTTABLE_FROM_SIZE_BE_OFF      (EXTTABLE_CCSNAME_OFF + 16)
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#define EXTTABLE_FROM_SIZE_BE_LEN_OFF  (EXTTABLE_CCSNAME_OFF + 20)
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#define EXTTABLE_FROM_SIZE_LE_OFF      (EXTTABLE_CCSNAME_OFF + 24)
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#define EXTTABLE_FROM_SIZE_LE_LEN_OFF  (EXTTABLE_CCSNAME_OFF + 28)
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#define EXTTABLE_TO_SPEED_BE_OFF       (EXTTABLE_CCSNAME_OFF + 32)
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#define EXTTABLE_TO_SPEED_BE_LEN_OFF   (EXTTABLE_CCSNAME_OFF + 36)
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#define EXTTABLE_TO_SPEED_LE_OFF       (EXTTABLE_CCSNAME_OFF + 40)
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#define EXTTABLE_TO_SPEED_LE_LEN_OFF   (EXTTABLE_CCSNAME_OFF + 44)
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#define EXTTABLE_TO_SIZE_BE_OFF        (EXTTABLE_CCSNAME_OFF + 48)
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#define EXTTABLE_TO_SIZE_BE_LEN_OFF    (EXTTABLE_CCSNAME_OFF + 52)
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#define EXTTABLE_TO_SIZE_LE_OFF        (EXTTABLE_CCSNAME_OFF + 56)
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#define EXTTABLE_TO_SIZE_LE_LEN_OFF    (EXTTABLE_CCSNAME_OFF + 60)
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/* Endian-independent offsets */
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#if (BYTE_ORDER == LITTLE_ENDIAN)
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#  define EXTTABLE_FROM_SPEED_OFF     EXTTABLE_FROM_SPEED_LE_OFF
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#  define EXTTABLE_FROM_SIZE_OFF      EXTTABLE_FROM_SIZE_LE_OFF
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#  define EXTTABLE_TO_SPEED_OFF       EXTTABLE_TO_SPEED_LE_OFF
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#  define EXTTABLE_TO_SIZE_OFF        EXTTABLE_TO_SIZE_LE_OFF
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#  define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_LE_LEN_OFF
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#  define EXTTABLE_FROM_SIZE_LEN_OFF  EXTTABLE_FROM_SIZE_LE_LEN_OFF
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#  define EXTTABLE_TO_SPEED_LEN_OFF   EXTTABLE_TO_SPEED_LE_LEN_OFF
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#  define EXTTABLE_TO_SIZE_LEN_OFF    EXTTABLE_TO_SIZE_LE_LEN_OFF
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#elif (BYTE_ORDER == BIG_ENDIAN)
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#  define EXTTABLE_FROM_SPEED_OFF     EXTTABLE_FROM_SPEED_BE_OFF
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#  define EXTTABLE_FROM_SIZE_OFF      EXTTABLE_FROM_SIZE_BE_OFF
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#  define EXTTABLE_TO_SPEED_OFF       EXTTABLE_TO_SPEED_BE_OFF
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#  define EXTTABLE_TO_SIZE_OFF        EXTTABLE_TO_SIZE_BE_OFF
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#  define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_BE_LEN_OFF
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#  define EXTTABLE_FROM_SIZE_LEN_OFF  EXTTABLE_FROM_SIZE_BE_LEN_OFF
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#  define EXTTABLE_TO_SPEED_LEN_OFF   EXTTABLE_TO_SPEED_BE_LEN_OFF
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#  define EXTTABLE_TO_SIZE_LEN_OFF    EXTTABLE_TO_SIZE_BE_LEN_OFF
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#endif
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/*
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 * Size-optimized suitable fields indexes.
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 */
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/* Ranges number array index */
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#define RANGES_NUM_INDEX    0
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/* Un-ranged codes number array index */
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#define UNRANGED_NUM_INDEX  1
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/* First un-ranged pair index array index */
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#define FIRST_UNRANGED_INDEX_INDEX 2
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/* First range array index */
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#define FIRST_RANGE_INDEX   3
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/*
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 * Builtin CCS table description structure.
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 */
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typedef struct
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{
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  __uint16_t ver;               /* Table version */
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  _CONST char *name;            /* CCS name */
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  __uint16_t bits;              /* CCS's bits number */
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  int from_ucs_type;            /* UCS -> CCS table optimization type */
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  _CONST __uint16_t *from_ucs;  /* UCS -> CCS table */
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  int to_ucs_type;              /* CCS -> UCS table optimization type */
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  _CONST __uint16_t *to_ucs;    /* CCS -> UCS table */
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} iconv_ccs_t;
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/*
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 * CCS table descriptor.
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 */
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typedef struct
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{
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  int bits;               /* CCS's bits number */
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  int type;               /* Table type (builtin/external) */
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  int optimization;       /* Table optimization type (speed/size) */
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  _CONST __uint16_t *tbl; /* Table's data */
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} iconv_ccs_desc_t;
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/* Array containing all built-in CCS tables */
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extern _CONST iconv_ccs_t *
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_iconv_ccs[];
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#endif /* __CCS_H__ */
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