1 /* 2 * Copyright (c) 2003-2004, Artem B. Bityuckiy 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 #ifndef __CCS_H__ 26 #define __CCS_H__ 27 28 #include <_ansi.h> 29 #include <sys/types.h> 30 #include <sys/param.h> 31 32 /* 33 * Size-optimized tables will be linked instead of speed-optimized if 34 * TABLE_USE_SIZE_OPTIMISATION macro is defined. 35 */ 36 #if defined (PREFER_SIZE_OVER_SPEED) || defined (__OPTIMIZE_SIZE__) 37 # define TABLE_USE_SIZE_OPTIMIZATION 38 #endif 39 40 /* Invalid code marker */ 41 #define INVALC 0xFFFF 42 /* Invalid block marker - marks empty blocks in speed-optimized tables */ 43 #define INVBLK 0xFFFF 44 /* Lost code marker - marks codes that was lost during CCS->UCS mapping */ 45 #define LOST_C DEFAULT_CHARACTER 46 47 /* 48 * Table parameters values. 49 */ 50 /* Table version 1.0 identifier */ 51 #define TABLE_VERSION_1 1 52 /* 8 and 16 bit tables identifiers */ 53 #define TABLE_8BIT 8 54 #define TABLE_16BIT 16 55 /* Size-optimized and speed-optimized tables identifiers */ 56 #define TABLE_SIZE_OPTIMIZED 1 57 #define TABLE_SPEED_OPTIMIZED 2 58 /* Built-in/external tables identifiers */ 59 #define TABLE_BUILTIN 1 60 #define TABLE_EXTERNAL 2 61 62 /* 63 * Binary table fields. 64 */ 65 /* "No table" marker */ 66 #define EXTTABLE_NO_TABLE 0 67 /* Version offset (2 bytes) */ 68 #define EXTTABLE_VERSION_OFF 0 69 /* Bits number offset (2 bytes) */ 70 #define EXTTABLE_BITS_OFF 2 71 /* CCS name length offset (2 bytes) */ 72 #define EXTTABLE_CCSNAME_LEN_OFF 4 73 /* CCS name offset (expanded to even bytes number)*/ 74 #define EXTTABLE_CCSNAME_OFF 8 75 /* Header length (minus CCS name) */ 76 #define EXTTABLE_HEADER_LEN (EXTTABLE_CCSNAME_OFF + 16*4) 77 /* Tables and lengths offsets minus CCS name length (4 bytes) */ 78 #define EXTTABLE_FROM_SPEED_BE_OFF (EXTTABLE_CCSNAME_OFF + 0) 79 #define EXTTABLE_FROM_SPEED_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 4) 80 #define EXTTABLE_FROM_SPEED_LE_OFF (EXTTABLE_CCSNAME_OFF + 8) 81 #define EXTTABLE_FROM_SPEED_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 12) 82 #define EXTTABLE_FROM_SIZE_BE_OFF (EXTTABLE_CCSNAME_OFF + 16) 83 #define EXTTABLE_FROM_SIZE_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 20) 84 #define EXTTABLE_FROM_SIZE_LE_OFF (EXTTABLE_CCSNAME_OFF + 24) 85 #define EXTTABLE_FROM_SIZE_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 28) 86 #define EXTTABLE_TO_SPEED_BE_OFF (EXTTABLE_CCSNAME_OFF + 32) 87 #define EXTTABLE_TO_SPEED_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 36) 88 #define EXTTABLE_TO_SPEED_LE_OFF (EXTTABLE_CCSNAME_OFF + 40) 89 #define EXTTABLE_TO_SPEED_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 44) 90 #define EXTTABLE_TO_SIZE_BE_OFF (EXTTABLE_CCSNAME_OFF + 48) 91 #define EXTTABLE_TO_SIZE_BE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 52) 92 #define EXTTABLE_TO_SIZE_LE_OFF (EXTTABLE_CCSNAME_OFF + 56) 93 #define EXTTABLE_TO_SIZE_LE_LEN_OFF (EXTTABLE_CCSNAME_OFF + 60) 94 /* Endian-independent offsets */ 95 #if (BYTE_ORDER == LITTLE_ENDIAN) 96 # define EXTTABLE_FROM_SPEED_OFF EXTTABLE_FROM_SPEED_LE_OFF 97 # define EXTTABLE_FROM_SIZE_OFF EXTTABLE_FROM_SIZE_LE_OFF 98 # define EXTTABLE_TO_SPEED_OFF EXTTABLE_TO_SPEED_LE_OFF 99 # define EXTTABLE_TO_SIZE_OFF EXTTABLE_TO_SIZE_LE_OFF 100 # define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_LE_LEN_OFF 101 # define EXTTABLE_FROM_SIZE_LEN_OFF EXTTABLE_FROM_SIZE_LE_LEN_OFF 102 # define EXTTABLE_TO_SPEED_LEN_OFF EXTTABLE_TO_SPEED_LE_LEN_OFF 103 # define EXTTABLE_TO_SIZE_LEN_OFF EXTTABLE_TO_SIZE_LE_LEN_OFF 104 #elif (BYTE_ORDER == BIG_ENDIAN) 105 # define EXTTABLE_FROM_SPEED_OFF EXTTABLE_FROM_SPEED_BE_OFF 106 # define EXTTABLE_FROM_SIZE_OFF EXTTABLE_FROM_SIZE_BE_OFF 107 # define EXTTABLE_TO_SPEED_OFF EXTTABLE_TO_SPEED_BE_OFF 108 # define EXTTABLE_TO_SIZE_OFF EXTTABLE_TO_SIZE_BE_OFF 109 # define EXTTABLE_FROM_SPEED_LEN_OFF EXTTABLE_FROM_SPEED_BE_LEN_OFF 110 # define EXTTABLE_FROM_SIZE_LEN_OFF EXTTABLE_FROM_SIZE_BE_LEN_OFF 111 # define EXTTABLE_TO_SPEED_LEN_OFF EXTTABLE_TO_SPEED_BE_LEN_OFF 112 # define EXTTABLE_TO_SIZE_LEN_OFF EXTTABLE_TO_SIZE_BE_LEN_OFF 113 #endif 114 115 /* 116 * Size-optimized suitable fields indexes. 117 */ 118 /* Ranges number array index */ 119 #define RANGES_NUM_INDEX 0 120 /* Un-ranged codes number array index */ 121 #define UNRANGED_NUM_INDEX 1 122 /* First un-ranged pair index array index */ 123 #define FIRST_UNRANGED_INDEX_INDEX 2 124 /* First range array index */ 125 #define FIRST_RANGE_INDEX 3 126 127 128 /* 129 * Builtin CCS table description structure. 130 */ 131 typedef struct 132 { 133 __uint16_t ver; /* Table version */ 134 const char *name; /* CCS name */ 135 __uint16_t bits; /* CCS's bits number */ 136 int from_ucs_type; /* UCS -> CCS table optimization type */ 137 const __uint16_t *from_ucs; /* UCS -> CCS table */ 138 int to_ucs_type; /* CCS -> UCS table optimization type */ 139 const __uint16_t *to_ucs; /* CCS -> UCS table */ 140 } iconv_ccs_t; 141 142 /* 143 * CCS table descriptor. 144 */ 145 typedef struct 146 { 147 int bits; /* CCS's bits number */ 148 int type; /* Table type (builtin/external) */ 149 int optimization; /* Table optimization type (speed/size) */ 150 const __uint16_t *tbl; /* Table's data */ 151 } iconv_ccs_desc_t; 152 153 /* Array containing all built-in CCS tables */ 154 extern const iconv_ccs_t * 155 _iconv_ccs[]; 156 157 #endif /* __CCS_H__ */ 158 159