compat_ctype.c (3462B)
1 /* Copyright (c) 2003-2004, Roger Dingledine 2 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. 3 * Copyright (c) 2007-2021, The Tor Project, Inc. */ 4 /* See LICENSE for licensing information */ 5 6 /** 7 * \file compat_ctype.c 8 * \brief Locale-independent character-type inspection (backend) 9 **/ 10 11 #include "lib/string/compat_ctype.h" 12 13 /** 14 * Tables to implement ctypes-replacement TOR_IS*() functions. Each table 15 * has 256 bits to look up whether a character is in some set or not. This 16 * fails on non-ASCII platforms, but it is hard to find a platform whose 17 * character set is not a superset of ASCII nowadays. */ 18 19 /**@{*/ 20 const uint32_t TOR_ISALPHA_TABLE[8] = 21 { 0, 0, 0x7fffffe, 0x7fffffe, 0, 0, 0, 0 }; 22 const uint32_t TOR_ISALNUM_TABLE[8] = 23 { 0, 0x3ff0000, 0x7fffffe, 0x7fffffe, 0, 0, 0, 0 }; 24 const uint32_t TOR_ISSPACE_TABLE[8] = { 0x3e00, 0x1, 0, 0, 0, 0, 0, 0 }; 25 const uint32_t TOR_ISXDIGIT_TABLE[8] = 26 { 0, 0x3ff0000, 0x7e, 0x7e, 0, 0, 0, 0 }; 27 const uint32_t TOR_ISDIGIT_TABLE[8] = { 0, 0x3ff0000, 0, 0, 0, 0, 0, 0 }; 28 const uint32_t TOR_ISPRINT_TABLE[8] = 29 { 0, 0xffffffff, 0xffffffff, 0x7fffffff, 0, 0, 0, 0x0 }; 30 const uint32_t TOR_ISUPPER_TABLE[8] = { 0, 0, 0x7fffffe, 0, 0, 0, 0, 0 }; 31 const uint32_t TOR_ISLOWER_TABLE[8] = { 0, 0, 0, 0x7fffffe, 0, 0, 0, 0 }; 32 /**@}*/ 33 34 /** Upper-casing and lowercasing tables to map characters to upper/lowercase 35 * equivalents. Used by tor_toupper() and tor_tolower(). */ 36 /**@{*/ 37 const uint8_t TOR_TOUPPER_TABLE[256] = { 38 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 39 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31, 40 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47, 41 48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63, 42 64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79, 43 80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95, 44 96,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79, 45 80,81,82,83,84,85,86,87,88,89,90,123,124,125,126,127, 46 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, 47 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, 48 160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175, 49 176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, 50 192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207, 51 208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223, 52 224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239, 53 240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255, 54 }; 55 const uint8_t TOR_TOLOWER_TABLE[256] = { 56 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 57 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31, 58 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47, 59 48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63, 60 64,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111, 61 112,113,114,115,116,117,118,119,120,121,122,91,92,93,94,95, 62 96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111, 63 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, 64 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, 65 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, 66 160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175, 67 176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, 68 192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207, 69 208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223, 70 224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239, 71 240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255, 72 }; 73 /**@}*/