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cc73685d | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
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2 | |
3 | #ifndef __LXC_STRING_UTILS_H | |
4 | #define __LXC_STRING_UTILS_H | |
5 | ||
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6 | #include <stdarg.h> |
7 | ||
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8 | #include "config.h" |
9 | ||
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10 | #include "initutils.h" |
11 | #include "macro.h" | |
12 | ||
13 | /* convert variadic argument lists to arrays (for execl type argument lists) */ | |
14 | extern char **lxc_va_arg_list_to_argv(va_list ap, size_t skip, int do_strdup); | |
15 | extern const char **lxc_va_arg_list_to_argv_const(va_list ap, size_t skip); | |
16 | ||
17 | /* | |
18 | * Some simple string functions; if they return pointers, they are allocated | |
19 | * buffers. | |
20 | */ | |
21 | extern char *lxc_string_replace(const char *needle, const char *replacement, | |
22 | const char *haystack); | |
23 | extern bool lxc_string_in_array(const char *needle, const char **haystack); | |
24 | extern char *lxc_string_join(const char *sep, const char **parts, | |
25 | bool use_as_prefix); | |
26 | /* | |
27 | * Normalize and split path: Leading and trailing / are removed, multiple | |
28 | * / are compactified, .. and . are resolved (.. on the top level is considered | |
29 | * identical to .). | |
30 | * Examples: | |
31 | * / -> { NULL } | |
32 | * foo/../bar -> { bar, NULL } | |
33 | * ../../ -> { NULL } | |
34 | * ./bar/baz/.. -> { bar, NULL } | |
35 | * foo//bar -> { foo, bar, NULL } | |
36 | */ | |
37 | extern char **lxc_normalize_path(const char *path); | |
38 | ||
39 | /* remove multiple slashes from the path, e.g. ///foo//bar -> /foo/bar */ | |
40 | extern char *lxc_deslashify(const char *path); | |
41 | extern char *lxc_append_paths(const char *first, const char *second); | |
42 | ||
43 | /* | |
44 | * Note: the following two functions use strtok(), so they will never | |
45 | * consider an empty element, even if two delimiters are next to | |
46 | * each other. | |
47 | */ | |
48 | extern bool lxc_string_in_list(const char *needle, const char *haystack, | |
49 | char sep); | |
50 | extern char **lxc_string_split(const char *string, char sep); | |
51 | extern char **lxc_string_split_and_trim(const char *string, char sep); | |
52 | extern char **lxc_string_split_quoted(char *string); | |
53 | ||
54 | /* Append string to NULL-terminated string array. */ | |
55 | extern int lxc_append_string(char ***list, char *entry); | |
56 | ||
57 | /* Some simple array manipulation utilities */ | |
58 | typedef void (*lxc_free_fn)(void *); | |
59 | typedef void *(*lxc_dup_fn)(void *); | |
60 | extern int lxc_grow_array(void ***array, size_t *capacity, size_t new_size, | |
61 | size_t capacity_increment); | |
62 | extern void lxc_free_array(void **array, lxc_free_fn element_free_fn); | |
63 | extern size_t lxc_array_len(void **array); | |
64 | ||
65 | extern void **lxc_append_null_to_array(void **array, size_t count); | |
66 | extern void remove_trailing_newlines(char *l); | |
67 | ||
68 | /* Helper functions to parse numbers. */ | |
69 | extern int lxc_safe_uint(const char *numstr, unsigned int *converted); | |
70 | extern int lxc_safe_int(const char *numstr, int *converted); | |
71 | extern int lxc_safe_long(const char *numstr, long int *converted); | |
72 | extern int lxc_safe_long_long(const char *numstr, long long int *converted); | |
73 | extern int lxc_safe_ulong(const char *numstr, unsigned long *converted); | |
74 | extern int lxc_safe_uint64(const char *numstr, uint64_t *converted, int base); | |
75 | /* Handles B, kb, MB, GB. Detects overflows and reports -ERANGE. */ | |
76 | extern int parse_byte_size_string(const char *s, int64_t *converted); | |
77 | ||
78 | /* | |
79 | * Concatenate all passed-in strings into one path. Do not fail. If any piece | |
80 | * is not prefixed with '/', add a '/'. | |
81 | */ | |
fe70edee | 82 | __attribute__((sentinel)) extern char *must_concat(size_t *len, const char *first, ...); |
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83 | __attribute__((sentinel)) extern char *must_make_path(const char *first, ...); |
84 | __attribute__((sentinel)) extern char *must_append_path(char *first, ...); | |
85 | ||
86 | /* Return copy of string @entry. Do not fail. */ | |
87 | extern char *must_copy_string(const char *entry); | |
88 | ||
54d423b8 | 89 | /* Re-allocate a pointer, do not fail */ |
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90 | extern void *must_realloc(void *orig, size_t sz); |
91 | ||
92 | extern int lxc_char_left_gc(const char *buffer, size_t len); | |
93 | ||
94 | extern int lxc_char_right_gc(const char *buffer, size_t len); | |
95 | ||
96 | extern char *lxc_trim_whitespace_in_place(char *buffer); | |
97 | ||
98 | extern int lxc_is_line_empty(const char *line); | |
dca12ddf | 99 | extern void remove_trailing_slashes(char *p); |
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100 | |
101 | #endif /* __LXC_STRING_UTILS_H */ |