[444] | 1 | /* |
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| 2 | * Copyright (c) 2003-2004, Artem B. Bityuckiy |
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| 3 | * |
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| 4 | * Redistribution and use in source and binary forms, with or without |
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| 5 | * modification, are permitted provided that the following conditions |
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| 6 | * are met: |
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| 7 | * 1. Redistributions of source code must retain the above copyright |
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| 8 | * notice, this list of conditions and the following disclaimer. |
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| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer in the |
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| 11 | * documentation and/or other materials provided with the distribution. |
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| 12 | * |
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| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 14 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 16 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 17 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 18 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 19 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 20 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 21 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 22 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 23 | * SUCH DAMAGE. |
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| 24 | */ |
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| 25 | #ifndef __CCS_H__ |
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| 26 | #define __CCS_H__ |
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| 27 | |
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| 28 | #include <_ansi.h> |
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| 29 | #include <sys/types.h> |
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| 30 | #include <sys/param.h> |
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| 31 | |
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| 32 | /* |
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| 33 | * Size-optimized tables will be linked instead of speed-optimized if |
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| 34 | * TABLE_USE_SIZE_OPTIMISATION macro is defined. |
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| 35 | */ |
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| 36 | #if defined (PREFER_SIZE_OVER_SPEED) || defined (__OPTIMIZE_SIZE__) |
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| 37 | # define TABLE_USE_SIZE_OPTIMIZATION |
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| 38 | #endif |
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| 39 | |
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| 40 | /* Invalid code marker */ |
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| 41 | #define INVALC 0xFFFF |
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| 42 | /* Invalid block marker - marks empty blocks in speed-optimized tables */ |
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| 43 | #define INVBLK 0xFFFF |
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| 44 | /* Lost code marker - marks codes that was lost during CCS->UCS mapping */ |
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| 45 | #define LOST_C DEFAULT_CHARACTER |
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| 46 | |
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| 47 | /* |
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| 48 | * Table parameters values. |
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| 49 | */ |
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| 50 | /* Table version 1.0 identifier */ |
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| 51 | #define TABLE_VERSION_1 1 |
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| 52 | /* 8 and 16 bit tables identifiers */ |
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| 53 | #define TABLE_8BIT 8 |
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| 54 | #define TABLE_16BIT 16 |
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| 55 | /* Size-optimized and speed-optimized tables identifiers */ |
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| 56 | #define TABLE_SIZE_OPTIMIZED 1 |
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| 57 | #define TABLE_SPEED_OPTIMIZED 2 |
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| 58 | /* Built-in/external tables identifiers */ |
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| 59 | #define TABLE_BUILTIN 1 |
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| 60 | #define TABLE_EXTERNAL 2 |
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| 61 | |
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| 62 | /* |
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| 63 | * Binary table fields. |
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| 64 | */ |
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| 65 | /* "No table" marker */ |
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| 66 | #define EXTTABLE_NO_TABLE 0 |
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| 67 | /* Version offset (2 bytes) */ |
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| 68 | #define EXTTABLE_VERSION_OFF 0 |
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| 69 | /* Bits number offset (2 bytes) */ |
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| 70 | #define EXTTABLE_BITS_OFF 2 |
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| 71 | /* CCS name length offset (2 bytes) */ |
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| 72 | #define EXTTABLE_CCSNAME_LEN_OFF 4 |
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| 73 | /* CCS name offset (expanded to even bytes number)*/ |
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| 74 | #define EXTTABLE_CCSNAME_OFF 8 |
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| 75 | /* Header length (minus CCS name) */ |
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| 76 | #define EXTTABLE_HEADER_LEN (EXTTABLE_CCSNAME_OFF + 16*4) |
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| 77 | /* Tables and lengths offsets minus CCS name length (4 bytes) */ |
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| 78 | #define EXTTABLE_FROM_SPEED_BE_OFF (EXTTABLE_CCSNAME_OFF + 0) |
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| 79 | #define EXTTABLE_FROM_SPEED_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 4) |
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| 80 | #define EXTTABLE_FROM_SPEED_LE_OFF (EXTTABLE_CCSNAME_OFF + 8) |
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| 81 | #define EXTTABLE_FROM_SPEED_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 12) |
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| 82 | #define EXTTABLE_FROM_SIZE_BE_OFF (EXTTABLE_CCSNAME_OFF + 16) |
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| 83 | #define EXTTABLE_FROM_SIZE_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 20) |
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| 84 | #define EXTTABLE_FROM_SIZE_LE_OFF (EXTTABLE_CCSNAME_OFF + 24) |
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| 85 | #define EXTTABLE_FROM_SIZE_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 28) |
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| 86 | #define EXTTABLE_TO_SPEED_BE_OFF (EXTTABLE_CCSNAME_OFF + 32) |
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| 87 | #define EXTTABLE_TO_SPEED_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 36) |
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| 88 | #define EXTTABLE_TO_SPEED_LE_OFF (EXTTABLE_CCSNAME_OFF + 40) |
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| 89 | #define EXTTABLE_TO_SPEED_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 44) |
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| 90 | #define EXTTABLE_TO_SIZE_BE_OFF (EXTTABLE_CCSNAME_OFF + 48) |
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| 91 | #define EXTTABLE_TO_SIZE_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 52) |
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| 92 | #define EXTTABLE_TO_SIZE_LE_OFF (EXTTABLE_CCSNAME_OFF + 56) |
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| 93 | #define EXTTABLE_TO_SIZE_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 60) |
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| 94 | /* Endian-independent offsets */ |
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| 95 | #if (BYTE_ORDER == LITTLE_ENDIAN) |
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| 96 | # define EXTTABLE_FROM_SPEED_OFF EXTTABLE_FROM_SPEED_LE_OFF |
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| 97 | # define EXTTABLE_FROM_SIZE_OFF EXTTABLE_FROM_SIZE_LE_OFF |
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| 98 | # define EXTTABLE_TO_SPEED_OFF EXTTABLE_TO_SPEED_LE_OFF |
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| 99 | # define EXTTABLE_TO_SIZE_OFF EXTTABLE_TO_SIZE_LE_OFF |
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| 100 | # define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_LE_LEN_OFF |
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| 101 | # define EXTTABLE_FROM_SIZE_LEN_OFF EXTTABLE_FROM_SIZE_LE_LEN_OFF |
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| 102 | # define EXTTABLE_TO_SPEED_LEN_OFF EXTTABLE_TO_SPEED_LE_LEN_OFF |
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| 103 | # define EXTTABLE_TO_SIZE_LEN_OFF EXTTABLE_TO_SIZE_LE_LEN_OFF |
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| 104 | #elif (BYTE_ORDER == BIG_ENDIAN) |
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| 105 | # define EXTTABLE_FROM_SPEED_OFF EXTTABLE_FROM_SPEED_BE_OFF |
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| 106 | # define EXTTABLE_FROM_SIZE_OFF EXTTABLE_FROM_SIZE_BE_OFF |
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| 107 | # define EXTTABLE_TO_SPEED_OFF EXTTABLE_TO_SPEED_BE_OFF |
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| 108 | # define EXTTABLE_TO_SIZE_OFF EXTTABLE_TO_SIZE_BE_OFF |
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| 109 | # define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_BE_LEN_OFF |
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| 110 | # define EXTTABLE_FROM_SIZE_LEN_OFF EXTTABLE_FROM_SIZE_BE_LEN_OFF |
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| 111 | # define EXTTABLE_TO_SPEED_LEN_OFF EXTTABLE_TO_SPEED_BE_LEN_OFF |
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| 112 | # define EXTTABLE_TO_SIZE_LEN_OFF EXTTABLE_TO_SIZE_BE_LEN_OFF |
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| 113 | #endif |
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| 114 | |
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| 115 | /* |
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| 116 | * Size-optimized suitable fields indexes. |
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| 117 | */ |
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| 118 | /* Ranges number array index */ |
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| 119 | #define RANGES_NUM_INDEX 0 |
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| 120 | /* Un-ranged codes number array index */ |
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| 121 | #define UNRANGED_NUM_INDEX 1 |
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| 122 | /* First un-ranged pair index array index */ |
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| 123 | #define FIRST_UNRANGED_INDEX_INDEX 2 |
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| 124 | /* First range array index */ |
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| 125 | #define FIRST_RANGE_INDEX 3 |
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| 126 | |
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| 127 | |
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| 128 | /* |
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| 129 | * Builtin CCS table description structure. |
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| 130 | */ |
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| 131 | typedef struct |
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| 132 | { |
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| 133 | __uint16_t ver; /* Table version */ |
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| 134 | const char *name; /* CCS name */ |
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| 135 | __uint16_t bits; /* CCS's bits number */ |
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| 136 | int from_ucs_type; /* UCS -> CCS table optimization type */ |
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| 137 | const __uint16_t *from_ucs; /* UCS -> CCS table */ |
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| 138 | int to_ucs_type; /* CCS -> UCS table optimization type */ |
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| 139 | const __uint16_t *to_ucs; /* CCS -> UCS table */ |
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| 140 | } iconv_ccs_t; |
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| 141 | |
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| 142 | /* |
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| 143 | * CCS table descriptor. |
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| 144 | */ |
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| 145 | typedef struct |
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| 146 | { |
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| 147 | int bits; /* CCS's bits number */ |
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| 148 | int type; /* Table type (builtin/external) */ |
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| 149 | int optimization; /* Table optimization type (speed/size) */ |
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| 150 | const __uint16_t *tbl; /* Table's data */ |
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| 151 | } iconv_ccs_desc_t; |
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| 152 | |
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| 153 | /* Array containing all built-in CCS tables */ |
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| 154 | extern const iconv_ccs_t * |
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| 155 | _iconv_ccs[]; |
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| 156 | |
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| 157 | #endif /* __CCS_H__ */ |
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| 158 | |
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