Tor  0.4.6.0-alpha-dev
compat_ctype.c
Go to the documentation of this file.
1 /* Copyright (c) 2003-2004, Roger Dingledine
2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
3  * Copyright (c) 2007-2020, 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 
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 /**@}*/
TOR_TOUPPER_TABLE
const uint8_t TOR_TOUPPER_TABLE[256]
Definition: compat_ctype.c:37
TOR_ISALPHA_TABLE
const uint32_t TOR_ISALPHA_TABLE[8]
Definition: compat_ctype.c:20
compat_ctype.h
Locale-independent character-type inspection (header)