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1 | #ifndef BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H |
2 | #define BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H | |
3 | ||
4 | /* | |
5 | * Copyright 2019 EfficiOS Inc. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <babeltrace2/babeltrace.h> | |
27 | #include <glib.h> | |
109730d9 | 28 | #include <stdbool.h> |
b7fa35fc SM |
29 | |
30 | #include <stdio.h> /* For __MINGW_PRINTF_FORMAT. */ | |
31 | ||
f4a6ca6f SM |
32 | #include <common/macros.h> |
33 | ||
b7fa35fc SM |
34 | #ifdef __MINGW_PRINTF_FORMAT |
35 | # define BT_PRINTF_FORMAT __MINGW_PRINTF_FORMAT | |
36 | #else | |
37 | # define BT_PRINTF_FORMAT printf | |
38 | #endif | |
39 | ||
40 | struct bt_param_validation_context; | |
41 | struct bt_param_validation_value_descr; | |
42 | ||
43 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_END { NULL, 0, {} } | |
44 | ||
45 | struct bt_param_validation_map_value_descr { | |
46 | const struct bt_param_validation_map_value_entry_descr *entries; | |
47 | }; | |
48 | ||
49 | #define BT_PARAM_VALIDATION_INFINITE UINT64_MAX | |
50 | ||
51 | struct bt_param_validation_array_value_descr { | |
52 | uint64_t min_length; | |
53 | uint64_t max_length; /* Use BT_PARAM_VALIDATION_INFINITE if there's no max. */ | |
54 | const struct bt_param_validation_value_descr *element_type; | |
55 | }; | |
56 | ||
57 | struct bt_param_validation_string_value_descr { | |
58 | /* NULL-terminated array of choices. Unused if NULL. */ | |
59 | const char **choices; | |
60 | }; | |
61 | ||
62 | enum bt_param_validation_status { | |
63 | BT_PARAM_VALIDATION_STATUS_OK = 0, | |
64 | BT_PARAM_VALIDATION_STATUS_MEMORY_ERROR = -1, | |
65 | BT_PARAM_VALIDATION_STATUS_VALIDATION_ERROR = -2, | |
66 | }; | |
67 | ||
68 | typedef enum bt_param_validation_status | |
69 | (bt_param_validation_func)(const bt_value *value, | |
70 | struct bt_param_validation_context *); | |
71 | ||
72 | struct bt_param_validation_value_descr { | |
73 | bt_value_type type; | |
74 | ||
75 | /* Additional checks dependent on the type. */ | |
76 | union { | |
77 | struct bt_param_validation_array_value_descr array; | |
78 | struct bt_param_validation_map_value_descr map; | |
79 | struct bt_param_validation_string_value_descr string; | |
80 | }; | |
81 | ||
82 | /* | |
83 | * If set, call this function, which is responsible of validating the | |
84 | * value. The other fields are ignored. | |
85 | * | |
86 | * If validation fails, this function must call | |
87 | * `bt_param_validation_error` with the provided context | |
88 | * to set the error string. | |
89 | */ | |
90 | bt_param_validation_func *validation_func; | |
91 | }; | |
92 | ||
93 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL true | |
94 | #define BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_MANDATORY false | |
95 | ||
96 | struct bt_param_validation_map_value_entry_descr { | |
97 | const char *key; | |
98 | bool is_optional; | |
99 | ||
100 | const struct bt_param_validation_value_descr value_descr; | |
101 | }; | |
102 | ||
f4a6ca6f | 103 | BT_HIDDEN |
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104 | enum bt_param_validation_status bt_param_validation_validate( |
105 | const bt_value *params, | |
106 | const struct bt_param_validation_map_value_entry_descr *entries, | |
107 | gchar **error); | |
108 | ||
f4a6ca6f | 109 | BT_HIDDEN |
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110 | __attribute__((format(BT_PRINTF_FORMAT, 2, 3))) |
111 | enum bt_param_validation_status bt_param_validation_error( | |
112 | struct bt_param_validation_context *ctx, | |
113 | const char *format, ...); | |
114 | ||
115 | #endif /* BABELTRACE_PLUGINS_COMMON_PARAM_VALIDATION_PARAM_VALIDATION_H */ |