/src/CMake/Utilities/cmcurl/lib/strcase.c
Line | Count | Source |
1 | | /*************************************************************************** |
2 | | * _ _ ____ _ |
3 | | * Project ___| | | | _ \| | |
4 | | * / __| | | | |_) | | |
5 | | * | (__| |_| | _ <| |___ |
6 | | * \___|\___/|_| \_\_____| |
7 | | * |
8 | | * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
9 | | * |
10 | | * This software is licensed as described in the file COPYING, which |
11 | | * you should have received as part of this distribution. The terms |
12 | | * are also available at https://curl.se/docs/copyright.html. |
13 | | * |
14 | | * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
15 | | * copies of the Software, and permit persons to whom the Software is |
16 | | * furnished to do so, under the terms of the COPYING file. |
17 | | * |
18 | | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
19 | | * KIND, either express or implied. |
20 | | * |
21 | | * SPDX-License-Identifier: curl |
22 | | * |
23 | | ***************************************************************************/ |
24 | | #include "curl_setup.h" |
25 | | |
26 | | #include "strcase.h" |
27 | | |
28 | | /* Mapping table to go from lowercase to uppercase for plain ASCII.*/ |
29 | | static const unsigned char touppermap[256] = { |
30 | | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
31 | | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, |
32 | | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, |
33 | | 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, |
34 | | 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, |
35 | | 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, |
36 | | 90, 91, 92, 93, 94, 95, 96, 65, 66, 67, 68, 69, 70, 71, 72, |
37 | | 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, |
38 | | 88, 89, 90, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, |
39 | | 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, |
40 | | 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, |
41 | | 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, |
42 | | 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, |
43 | | 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, |
44 | | 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, |
45 | | 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, |
46 | | 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, |
47 | | 255 |
48 | | }; |
49 | | |
50 | | /* Mapping table to go from uppercase to lowercase for plain ASCII.*/ |
51 | | static const unsigned char tolowermap[256] = { |
52 | | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
53 | | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, |
54 | | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, |
55 | | 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, |
56 | | 60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, |
57 | | 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
58 | | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, |
59 | | 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
60 | | 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, |
61 | | 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, |
62 | | 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, |
63 | | 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, |
64 | | 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, |
65 | | 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, |
66 | | 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, |
67 | | 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, |
68 | | 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, |
69 | | 255 |
70 | | }; |
71 | | |
72 | | /* Portable, consistent toupper. Do not use toupper() because its behavior is |
73 | | altered by the current locale. */ |
74 | | char Curl_raw_toupper(char in) |
75 | 0 | { |
76 | 0 | return (char)touppermap[(unsigned char)in]; |
77 | 0 | } |
78 | | |
79 | | /* Portable, consistent tolower. Do not use tolower() because its behavior is |
80 | | altered by the current locale. */ |
81 | | char Curl_raw_tolower(char in) |
82 | 0 | { |
83 | 0 | return (char)tolowermap[(unsigned char)in]; |
84 | 0 | } |
85 | | |
86 | | /* Copy an upper case version of the string from src to dest. The |
87 | | * strings may overlap. No more than n characters of the string are copied |
88 | | * (including any NUL) and the destination string will NOT be |
89 | | * null-terminated if that limit is reached. |
90 | | */ |
91 | | void Curl_strntoupper(char *dest, const char *src, size_t n) |
92 | 0 | { |
93 | 0 | if(n < 1) |
94 | 0 | return; |
95 | | |
96 | 0 | do { |
97 | 0 | *dest++ = Curl_raw_toupper(*src); |
98 | 0 | } while(*src++ && --n); |
99 | 0 | } |
100 | | |
101 | | /* Copy a lower case version of the string from src to dest. The |
102 | | * strings may overlap. No more than n characters of the string are copied |
103 | | * (including any NUL) and the destination string will NOT be |
104 | | * null-terminated if that limit is reached. |
105 | | */ |
106 | | void Curl_strntolower(char *dest, const char *src, size_t n) |
107 | 0 | { |
108 | 0 | if(n < 1) |
109 | 0 | return; |
110 | | |
111 | 0 | do { |
112 | 0 | *dest++ = Curl_raw_tolower(*src); |
113 | 0 | } while(*src++ && --n); |
114 | 0 | } |
115 | | |
116 | | /* Compare case-sensitive null-terminated strings, taking care of possible |
117 | | * null pointers. Return true if arguments match. |
118 | | */ |
119 | | bool Curl_safecmp(char *a, char *b) |
120 | 0 | { |
121 | 0 | if(a && b) |
122 | 0 | return !strcmp(a, b); |
123 | 0 | return !a && !b; |
124 | 0 | } |
125 | | |
126 | | /* |
127 | | * Curl_timestrcmp() returns 0 if the two strings are identical. The time this |
128 | | * function spends is a function of the shortest string, not of the contents. |
129 | | */ |
130 | | int Curl_timestrcmp(const char *a, const char *b) |
131 | 0 | { |
132 | 0 | int match = 0; |
133 | 0 | int i = 0; |
134 | |
|
135 | 0 | if(a && b) { |
136 | 0 | while(1) { |
137 | 0 | match |= a[i] ^ b[i]; |
138 | 0 | if(!a[i] || !b[i]) |
139 | 0 | break; |
140 | 0 | i++; |
141 | 0 | } |
142 | 0 | } |
143 | 0 | else |
144 | 0 | return a || b; |
145 | 0 | return match; |
146 | 0 | } |