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ea76a8bb SM |
1 | /* |
2 | * Copyright (C) 2021 Simon Marchi <simon.marchi@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef COMMON_ARGPAR_UTILS_H | |
9 | #define COMMON_ARGPAR_UTILS_H | |
10 | ||
11 | #include <stdarg.h> | |
12 | ||
13 | #include <common/macros.h> | |
14 | #include <common/argpar/argpar.h> | |
15 | #include <common/string-utils/format.h> | |
16 | ||
17 | enum parse_next_item_status | |
18 | { | |
19 | PARSE_NEXT_ITEM_STATUS_OK = 0, | |
20 | PARSE_NEXT_ITEM_STATUS_END = 1, | |
21 | PARSE_NEXT_ITEM_STATUS_ERROR = -1, | |
22 | }; | |
23 | ||
24 | /* | |
25 | * Parse the next argpar item using `iter`. | |
26 | * | |
27 | * The item in `*item` is always freed and cleared on entry. | |
28 | * | |
29 | * If an item is parsed successfully, return the new item in `*item` and return | |
30 | * PARSE_NEXT_ITEM_STATUS_OK. | |
31 | * | |
32 | * If the end of the argument list is reached, return | |
33 | * PARSE_NEXT_ITEM_STATUS_END. | |
34 | * | |
35 | * On error, print a descriptive error message and return | |
36 | * PARSE_NEXT_ITEM_STATUS_ERROR. If `context_fmt` is non-NULL, it is formatted | |
37 | * using the following arguments and prepended to the error message. | |
38 | * | |
39 | * If `unknown_opt_is_error` is true, an unknown option is considered an error. | |
40 | * Otherwise, it is considered as the end of the argument list. | |
41 | */ | |
42 | LTTNG_HIDDEN ATTR_FORMAT_PRINTF(5, 6) | |
43 | enum parse_next_item_status parse_next_item(struct argpar_iter *iter, | |
44 | const struct argpar_item **item, const char **argv, | |
45 | bool unknown_opt_is_error, const char *context_fmt, ...); | |
46 | ||
47 | #endif |