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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
8b43440b | 2 | |
8b43440b LP |
3 | #pragma once |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | ***/ | |
23 | ||
11c3a366 | 24 | #include <errno.h> |
8b43440b LP |
25 | #include <stddef.h> |
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | #include <sys/types.h> | |
29 | ||
30 | #include "macro.h" | |
31 | #include "parse-util.h" | |
32 | #include "string-util.h" | |
33 | ||
34 | ssize_t string_table_lookup(const char * const *table, size_t len, const char *key); | |
35 | ||
36 | /* For basic lookup tables with strictly enumerated entries */ | |
37 | #define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ | |
38 | scope const char *name##_to_string(type i) { \ | |
39 | if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ | |
40 | return NULL; \ | |
41 | return name##_table[i]; \ | |
42 | } | |
43 | ||
44 | #define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \ | |
45 | scope type name##_from_string(const char *s) { \ | |
46 | return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \ | |
47 | } | |
48 | ||
b18b8662 LP |
49 | #define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope) \ |
50 | scope type name##_from_string(const char *s) { \ | |
51 | int b; \ | |
35ca4ce0 LP |
52 | if (!s) \ |
53 | return -1; \ | |
b18b8662 LP |
54 | b = parse_boolean(s); \ |
55 | if (b == 0) \ | |
56 | return (type) 0; \ | |
57 | else if (b > 0) \ | |
58 | return yes; \ | |
59 | return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \ | |
60 | } | |
61 | ||
8e98476e ZJS |
62 | #define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,scope) \ |
63 | scope int name##_to_string_alloc(type i, char **str) { \ | |
8b43440b LP |
64 | char *s; \ |
65 | if (i < 0 || i > max) \ | |
66 | return -ERANGE; \ | |
67 | if (i < (type) ELEMENTSOF(name##_table)) { \ | |
68 | s = strdup(name##_table[i]); \ | |
69 | if (!s) \ | |
70 | return -ENOMEM; \ | |
71 | } else { \ | |
72 | if (asprintf(&s, "%i", i) < 0) \ | |
73 | return -ENOMEM; \ | |
74 | } \ | |
75 | *str = s; \ | |
76 | return 0; \ | |
8e98476e ZJS |
77 | } |
78 | ||
79 | #define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,scope) \ | |
8b43440b LP |
80 | type name##_from_string(const char *s) { \ |
81 | type i; \ | |
82 | unsigned u = 0; \ | |
83 | if (!s) \ | |
84 | return (type) -1; \ | |
85 | for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \ | |
86 | if (streq_ptr(name##_table[i], s)) \ | |
87 | return i; \ | |
88 | if (safe_atou(s, &u) >= 0 && u <= max) \ | |
89 | return (type) u; \ | |
90 | return (type) -1; \ | |
91 | } \ | |
8e98476e ZJS |
92 | |
93 | ||
94 | #define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ | |
95 | _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ | |
96 | _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \ | |
97 | struct __useless_struct_to_allow_trailing_semicolon__ | |
98 | ||
99 | #define _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,scope) \ | |
100 | _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ | |
101 | _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope) \ | |
102 | struct __useless_struct_to_allow_trailing_semicolon__ | |
103 | ||
104 | #define DEFINE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,) | |
105 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,static) | |
106 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static) | |
107 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static) | |
108 | ||
109 | #define DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes) _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,) | |
110 | ||
111 | /* For string conversions where numbers are also acceptable */ | |
112 | #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ | |
113 | _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,) \ | |
114 | _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,) \ | |
8b43440b | 115 | struct __useless_struct_to_allow_trailing_semicolon__ |
8e98476e ZJS |
116 | |
117 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max) \ | |
118 | _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,static) | |
119 | #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max) \ | |
120 | _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,static) |