1 /* 2 ** 2008 June 13 3 ** 4 ** The author disclaims copyright to this source code. In place of 5 ** a legal notice, here is a blessing: 6 ** 7 ** May you do good and not evil. 8 ** May you find forgiveness for yourself and forgive others. 9 ** May you share freely, never taking more than you give. 10 ** 11 ************************************************************************* 12 ** 13 ** This file contains definitions of global variables and contants. 14 */ 15 #include "sqliteInt.h" 16 17 /* An array to map all upper-case characters into their corresponding 18 ** lower-case character. 19 ** 20 ** SQLite only considers US-ASCII (or EBCDIC) characters. We do not 21 ** handle case conversions for the UTF character set since the tables 22 ** involved are nearly as big or bigger than SQLite itself. 23 */ 24 const unsigned char sqlite3UpperToLower[] = { 25 #ifdef SQLITE_ASCII 26 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 28 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 29 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 97, 98, 99,100,101,102,103, 30 104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121, 31 122, 91, 92, 93, 94, 95, 96, 97, 98, 99,100,101,102,103,104,105,106,107, 32 108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125, 33 126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, 34 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161, 35 162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179, 36 180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197, 37 198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215, 38 216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233, 39 234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251, 40 252,253,254,255 41 #endif 42 #ifdef SQLITE_EBCDIC 43 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 0x */ 44 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, /* 1x */ 45 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 2x */ 46 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 3x */ 47 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, /* 4x */ 48 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, /* 5x */ 49 96, 97, 66, 67, 68, 69, 70, 71, 72, 73,106,107,108,109,110,111, /* 6x */ 50 112, 81, 82, 83, 84, 85, 86, 87, 88, 89,122,123,124,125,126,127, /* 7x */ 51 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, /* 8x */ 52 144,145,146,147,148,149,150,151,152,153,154,155,156,157,156,159, /* 9x */ 53 160,161,162,163,164,165,166,167,168,169,170,171,140,141,142,175, /* Ax */ 54 176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, /* Bx */ 55 192,129,130,131,132,133,134,135,136,137,202,203,204,205,206,207, /* Cx */ 56 208,145,146,147,148,149,150,151,152,153,218,219,220,221,222,223, /* Dx */ 57 224,225,162,163,164,165,166,167,168,169,232,203,204,205,206,207, /* Ex */ 58 239,240,241,242,243,244,245,246,247,248,249,219,220,221,222,255, /* Fx */ 59 #endif 60 }; 61 62 /* 63 ** The following 256 byte lookup table is used to support SQLites built-in 64 ** equivalents to the following standard library functions: 65 ** 66 ** isspace() 0x01 67 ** isalpha() 0x02 68 ** isdigit() 0x04 69 ** isalnum() 0x06 70 ** isxdigit() 0x08 71 ** toupper() 0x20 72 ** SQLite identifier character 0x40 73 ** 74 ** Bit 0x20 is set if the mapped character requires translation to upper 75 ** case. i.e. if the character is a lower-case ASCII character. 76 ** If x is a lower-case ASCII character, then its upper-case equivalent 77 ** is (x - 0x20). Therefore toupper() can be implemented as: 78 ** 79 ** (x & ~(map[x]&0x20)) 80 ** 81 ** Standard function tolower() is implemented using the sqlite3UpperToLower[] 82 ** array. tolower() is used more often than toupper() by SQLite. 83 ** 84 ** Bit 0x40 is set if the character non-alphanumeric and can be used in an 85 ** SQLite identifier. Identifiers are alphanumerics, "_", "$", and any 86 ** non-ASCII UTF character. Hence the test for whether or not a character is 87 ** part of an identifier is 0x46. 88 ** 89 ** SQLite's versions are identical to the standard versions assuming a 90 ** locale of "C". They are implemented as macros in sqliteInt.h. 91 */ 92 #ifdef SQLITE_ASCII 93 const unsigned char sqlite3CtypeMap[256] = { 94 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00..07 ........ */ 95 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, /* 08..0f ........ */ 96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10..17 ........ */ 97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 18..1f ........ */ 98 0x01, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, /* 20..27 !"#$%&' */ 99 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 28..2f ()*+,-./ */ 100 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, /* 30..37 01234567 */ 101 0x0c, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 38..3f 89:;<=>? */ 102 103 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x02, /* 40..47 @ABCDEFG */ 104 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 48..4f HIJKLMNO */ 105 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 50..57 PQRSTUVW */ 106 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x40, /* 58..5f XYZ[\]^_ */ 107 0x00, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x22, /* 60..67 `abcdefg */ 108 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 68..6f hijklmno */ 109 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 70..77 pqrstuvw */ 110 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, /* 78..7f xyz{|}~. */ 111 112 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 80..87 ........ */ 113 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 88..8f ........ */ 114 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 90..97 ........ */ 115 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 98..9f ........ */ 116 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a0..a7 ........ */ 117 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a8..af ........ */ 118 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b0..b7 ........ */ 119 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b8..bf ........ */ 120 121 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c0..c7 ........ */ 122 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c8..cf ........ */ 123 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d0..d7 ........ */ 124 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d8..df ........ */ 125 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e0..e7 ........ */ 126 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e8..ef ........ */ 127 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* f0..f7 ........ */ 128 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 /* f8..ff ........ */ 129 }; 130 #endif 131 132 133 134 /* 135 ** The following singleton contains the global configuration for 136 ** the SQLite library. 137 */ 138 SQLITE_WSD struct Sqlite3Config sqlite3Config = { 139 SQLITE_DEFAULT_MEMSTATUS, /* bMemstat */ 140 1, /* bCoreMutex */ 141 SQLITE_THREADSAFE==1, /* bFullMutex */ 142 0x7ffffffe, /* mxStrlen */ 143 100, /* szLookaside */ 144 500, /* nLookaside */ 145 {0,0,0,0,0,0,0,0}, /* m */ 146 {0,0,0,0,0,0,0,0,0}, /* mutex */ 147 {0,0,0,0,0,0,0,0,0,0,0}, /* pcache */ 148 (void*)0, /* pHeap */ 149 0, /* nHeap */ 150 0, 0, /* mnHeap, mxHeap */ 151 (void*)0, /* pScratch */ 152 0, /* szScratch */ 153 0, /* nScratch */ 154 (void*)0, /* pPage */ 155 0, /* szPage */ 156 0, /* nPage */ 157 0, /* mxParserStack */ 158 0, /* sharedCacheEnabled */ 159 /* All the rest should always be initialized to zero */ 160 0, /* isInit */ 161 0, /* inProgress */ 162 0, /* isMutexInit */ 163 0, /* isMallocInit */ 164 0, /* isPCacheInit */ 165 0, /* pInitMutex */ 166 0, /* nRefInitMutex */ 167 0, /* xLog */ 168 0, /* pLogArg */ 169 }; 170 171 172 /* 173 ** Hash table for global functions - functions common to all 174 ** database connections. After initialization, this table is 175 ** read-only. 176 */ 177 SQLITE_WSD FuncDefHash sqlite3GlobalFunctions; 178 179 /* 180 ** Constant tokens for values 0 and 1. 181 */ 182 const Token sqlite3IntTokens[] = { 183 { "0", 1 }, 184 { "1", 1 } 185 }; 186 187 188 /* 189 ** The value of the "pending" byte must be 0x40000000 (1 byte past the 190 ** 1-gibabyte boundary) in a compatible database. SQLite never uses 191 ** the database page that contains the pending byte. It never attempts 192 ** to read or write that page. The pending byte page is set assign 193 ** for use by the VFS layers as space for managing file locks. 194 ** 195 ** During testing, it is often desirable to move the pending byte to 196 ** a different position in the file. This allows code that has to 197 ** deal with the pending byte to run on files that are much smaller 198 ** than 1 GiB. The sqlite3_test_control() interface can be used to 199 ** move the pending byte. 200 ** 201 ** IMPORTANT: Changing the pending byte to any value other than 202 ** 0x40000000 results in an incompatible database file format! 203 ** Changing the pending byte during operating results in undefined 204 ** and dileterious behavior. 205 */ 206 #ifndef SQLITE_OMIT_WSD 207 int sqlite3PendingByte = 0x40000000; 208 #endif 209 210 #include "opcodes.h" 211 /* 212 ** Properties of opcodes. The OPFLG_INITIALIZER macro is 213 ** created by mkopcodeh.awk during compilation. Data is obtained 214 ** from the comments following the "case OP_xxxx:" statements in 215 ** the vdbe.c file. 216 */ 217 const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; 218