1 /* Copyright (c) 2002 Red Hat Incorporated.
2 All rights reserved.
3
4 Redistribution and use in source and binary forms, with or without
5 modification, are permitted provided that the following conditions are met:
6
7 Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
9
10 Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13
14 The name of Red Hat Incorporated may not be used to endorse
15 or promote products derived from this software without specific
16 prior written permission.
17
18 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 ARE DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
22 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 /*
31 FUNCTION
32 <<wctype>>, <<wctype_l>>---get wide-character classification type
33
34 INDEX
35 wctype
36
37 INDEX
38 wctype_l
39
40 SYNOPSIS
41 #include <wctype.h>
42 wctype_t wctype(const char *<[c]>);
43
44 #include <wctype.h>
45 wctype_t wctype_l(const char *<[c]>, locale_t <[locale]>);
46
47
48 DESCRIPTION
49 <<wctype>> is a function which takes a string <[c]> and gives back
50 the appropriate wctype_t type value associated with the string,
51 if one exists. The following values are guaranteed to be recognized:
52 "alnum", "alpha", "blank", "cntrl", "digit", "graph", "lower", "print",
53 "punct", "space", "upper", and "xdigit".
54
55 <<wctype_l>> is like <<wctype>> but performs the function based on the
56 locale specified by the locale object locale. If <[locale]> is
57 LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
58
59 RETURNS
60 <<wctype>>, <<wctype_l>> return 0 and sets <<errno>> to <<EINVAL>> if the
61 given name is invalid. Otherwise, it returns a valid non-zero wctype_t
62 value.
63
64 PORTABILITY
65 <<wctype>> is C99.
66 <<wctype_l>> is POSIX-1.2008.
67
68 No supporting OS subroutines are required.
69 */
70
71 #include "local.h"
72 #include <wctype.h>
73
74 wctype_t
wctype(const char * c)75 wctype (const char *c)
76 {
77 switch (*c)
78 {
79 case 'a':
80 if (!strcmp (c, "alnum"))
81 return WC_ALNUM;
82 else if (!strcmp (c, "alpha"))
83 return WC_ALPHA;
84 break;
85 case 'b':
86 if (!strcmp (c, "blank"))
87 return WC_BLANK;
88 break;
89 case 'c':
90 if (!strcmp (c, "cntrl"))
91 return WC_CNTRL;
92 break;
93 case 'd':
94 if (!strcmp (c, "digit"))
95 return WC_DIGIT;
96 break;
97 case 'g':
98 if (!strcmp (c, "graph"))
99 return WC_GRAPH;
100 break;
101 case 'l':
102 if (!strcmp (c, "lower"))
103 return WC_LOWER;
104 break;
105 case 'p':
106 if (!strcmp (c, "print"))
107 return WC_PRINT;
108 else if (!strcmp (c, "punct"))
109 return WC_PUNCT;
110 break;
111 case 's':
112 if (!strcmp (c, "space"))
113 return WC_SPACE;
114 break;
115 case 'u':
116 if (!strcmp (c, "upper"))
117 return WC_UPPER;
118 break;
119 case 'x':
120 if (!strcmp (c, "xdigit"))
121 return WC_XDIGIT;
122 break;
123 }
124
125 /* otherwise invalid */
126 _REENT_ERRNO(r) = EINVAL;
127 return 0;
128 }
129
