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1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 1998 - 2018, 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.haxx.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  ***************************************************************************/
22 
23 #include "curl_setup.h"
24 
25 #ifndef CURL_DOES_CONVERSIONS
26 
27 #undef _U
28 #define _U (1<<0) /* upper case */
29 #undef _L
30 #define _L (1<<1) /* lower case */
31 #undef _N
32 #define _N (1<<2) /* decimal numerical digit */
33 #undef _S
34 #define _S (1<<3) /* space */
35 #undef _P
36 #define _P (1<<4) /* punctuation */
37 #undef _C
38 #define _C (1<<5) /* control */
39 #undef _X
40 #define _X (1<<6) /* hexadecimal letter */
41 #undef _B
42 #define _B (1<<7) /* blank */
43 
44 static const unsigned char ascii[128] = {
45   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
46   _C,   _C|_S,  _C|_S,  _C|_S,  _C|_S,  _C|_S,  _C,     _C,
47   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
48   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
49   _S|_B, _P,    _P,     _P,     _P,     _P,     _P,     _P,
50   _P,   _P,     _P,     _P,     _P,     _P,     _P,     _P,
51   _N,   _N,     _N,     _N,     _N,     _N,     _N,     _N,
52   _N,   _N,     _P,     _P,     _P,     _P,     _P,     _P,
53   _P,   _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U,
54   _U,   _U,     _U,     _U,     _U,     _U,     _U,     _U,
55   _U,   _U,     _U,     _U,     _U,     _U,     _U,     _U,
56   _U,   _U,     _U,     _P,     _P,     _P,     _P,     _P,
57   _P,   _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L,
58   _L,   _L,     _L,     _L,     _L,     _L,     _L,     _L,
59   _L,   _L,     _L,     _L,     _L,     _L,     _L,     _L,
60   _L,   _L,     _L,     _P,     _P,     _P,     _P,     _C
61 };
62 
Curl_isspace(int c)63 int Curl_isspace(int c)
64 {
65   if((c < 0) || (c >= 0x80))
66     return FALSE;
67   return (ascii[c] & _S);
68 }
69 
Curl_isdigit(int c)70 int Curl_isdigit(int c)
71 {
72   if((c < 0) || (c >= 0x80))
73     return FALSE;
74   return (ascii[c] & _N);
75 }
76 
Curl_isalnum(int c)77 int Curl_isalnum(int c)
78 {
79   if((c < 0) || (c >= 0x80))
80     return FALSE;
81   return (ascii[c] & (_N|_U|_L));
82 }
83 
Curl_isxdigit(int c)84 int Curl_isxdigit(int c)
85 {
86   if((c < 0) || (c >= 0x80))
87     return FALSE;
88   return (ascii[c] & (_N|_X));
89 }
90 
Curl_isgraph(int c)91 int Curl_isgraph(int c)
92 {
93   if((c < 0) || (c >= 0x80) || (c == ' '))
94     return FALSE;
95   return (ascii[c] & (_N|_X|_U|_L|_P|_S));
96 }
97 
Curl_isprint(int c)98 int Curl_isprint(int c)
99 {
100   if((c < 0) || (c >= 0x80))
101     return FALSE;
102   return (ascii[c] & (_N|_X|_U|_L|_P|_S));
103 }
104 
Curl_isalpha(int c)105 int Curl_isalpha(int c)
106 {
107   if((c < 0) || (c >= 0x80))
108     return FALSE;
109   return (ascii[c] & (_U|_L));
110 }
111 
Curl_isupper(int c)112 int Curl_isupper(int c)
113 {
114   if((c < 0) || (c >= 0x80))
115     return FALSE;
116   return (ascii[c] & (_U));
117 }
118 
Curl_islower(int c)119 int Curl_islower(int c)
120 {
121   if((c < 0) || (c >= 0x80))
122     return FALSE;
123   return (ascii[c] & (_L));
124 }
125 
Curl_iscntrl(int c)126 int Curl_iscntrl(int c)
127 {
128   if((c < 0) || (c >= 0x80))
129     return FALSE;
130   return (ascii[c] & (_C));
131 }
132 
133 #endif /* !CURL_DOES_CONVERSIONS */
134