]>
Commit | Line | Data |
---|---|---|
07630cea LP |
1 | #pragma once |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
11c3a366 | 22 | #include <alloca.h> |
07630cea | 23 | #include <stdbool.h> |
11c3a366 | 24 | #include <stddef.h> |
07630cea LP |
25 | #include <string.h> |
26 | ||
27 | #include "macro.h" | |
28 | ||
b11d6a7b LP |
29 | /* What is interpreted as whitespace? */ |
30 | #define WHITESPACE " \t\n\r" | |
31 | #define NEWLINE "\n\r" | |
32 | #define QUOTES "\"\'" | |
33 | #define COMMENTS "#;" | |
34 | #define GLOB_CHARS "*?[" | |
35 | #define DIGITS "0123456789" | |
36 | #define LOWERCASE_LETTERS "abcdefghijklmnopqrstuvwxyz" | |
37 | #define UPPERCASE_LETTERS "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
38 | #define LETTERS LOWERCASE_LETTERS UPPERCASE_LETTERS | |
39 | #define ALPHANUMERICAL LETTERS DIGITS | |
1a7906ae | 40 | #define HEXDIGITS DIGITS "abcdefABCDEF" |
b11d6a7b | 41 | |
07630cea LP |
42 | #define streq(a,b) (strcmp((a),(b)) == 0) |
43 | #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) | |
44 | #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0) | |
45 | #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0) | |
46 | ||
47 | int strcmp_ptr(const char *a, const char *b) _pure_; | |
48 | ||
49 | static inline bool streq_ptr(const char *a, const char *b) { | |
50 | return strcmp_ptr(a, b) == 0; | |
51 | } | |
52 | ||
53 | static inline const char* strempty(const char *s) { | |
54 | return s ? s : ""; | |
55 | } | |
56 | ||
57 | static inline const char* strnull(const char *s) { | |
58 | return s ? s : "(null)"; | |
59 | } | |
60 | ||
61 | static inline const char *strna(const char *s) { | |
62 | return s ? s : "n/a"; | |
63 | } | |
64 | ||
65 | static inline bool isempty(const char *p) { | |
66 | return !p || !p[0]; | |
67 | } | |
68 | ||
3c6f7c34 LP |
69 | static inline const char *empty_to_null(const char *p) { |
70 | return isempty(p) ? NULL : p; | |
71 | } | |
72 | ||
07630cea LP |
73 | static inline char *startswith(const char *s, const char *prefix) { |
74 | size_t l; | |
75 | ||
76 | l = strlen(prefix); | |
77 | if (strncmp(s, prefix, l) == 0) | |
78 | return (char*) s + l; | |
79 | ||
80 | return NULL; | |
81 | } | |
82 | ||
83 | static inline char *startswith_no_case(const char *s, const char *prefix) { | |
84 | size_t l; | |
85 | ||
86 | l = strlen(prefix); | |
87 | if (strncasecmp(s, prefix, l) == 0) | |
88 | return (char*) s + l; | |
89 | ||
90 | return NULL; | |
91 | } | |
92 | ||
93 | char *endswith(const char *s, const char *postfix) _pure_; | |
94 | char *endswith_no_case(const char *s, const char *postfix) _pure_; | |
95 | ||
96 | char *first_word(const char *s, const char *word) _pure_; | |
97 | ||
98 | const char* split(const char **state, size_t *l, const char *separator, bool quoted); | |
99 | ||
100 | #define FOREACH_WORD(word, length, s, state) \ | |
101 | _FOREACH_WORD(word, length, s, WHITESPACE, false, state) | |
102 | ||
103 | #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ | |
104 | _FOREACH_WORD(word, length, s, separator, false, state) | |
105 | ||
106 | #define FOREACH_WORD_QUOTED(word, length, s, state) \ | |
107 | _FOREACH_WORD(word, length, s, WHITESPACE, true, state) | |
108 | ||
109 | #define _FOREACH_WORD(word, length, s, separator, quoted, state) \ | |
110 | for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted))) | |
111 | ||
112 | char *strappend(const char *s, const char *suffix); | |
113 | char *strnappend(const char *s, const char *suffix, size_t length); | |
114 | ||
115 | char *strjoin(const char *x, ...) _sentinel_; | |
116 | ||
117 | #define strjoina(a, ...) \ | |
118 | ({ \ | |
119 | const char *_appendees_[] = { a, __VA_ARGS__ }; \ | |
120 | char *_d_, *_p_; \ | |
121 | int _len_ = 0; \ | |
122 | unsigned _i_; \ | |
123 | for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \ | |
124 | _len_ += strlen(_appendees_[_i_]); \ | |
125 | _p_ = _d_ = alloca(_len_ + 1); \ | |
126 | for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \ | |
127 | _p_ = stpcpy(_p_, _appendees_[_i_]); \ | |
128 | *_p_ = 0; \ | |
129 | _d_; \ | |
130 | }) | |
131 | ||
132 | char *strstrip(char *s); | |
133 | char *delete_chars(char *s, const char *bad); | |
134 | char *truncate_nl(char *s); | |
135 | ||
b577e3d5 LP |
136 | char ascii_tolower(char x); |
137 | char *ascii_strlower(char *s); | |
138 | char *ascii_strlower_n(char *s, size_t n); | |
07630cea | 139 | |
522d85ae | 140 | int ascii_strcasecmp_n(const char *a, const char *b, size_t n); |
c1749834 | 141 | int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m); |
522d85ae | 142 | |
07630cea LP |
143 | bool chars_intersect(const char *a, const char *b) _pure_; |
144 | ||
145 | static inline bool _pure_ in_charset(const char *s, const char* charset) { | |
146 | assert(s); | |
147 | assert(charset); | |
148 | return s[strspn(s, charset)] == '\0'; | |
149 | } | |
150 | ||
151 | bool string_has_cc(const char *p, const char *ok) _pure_; | |
152 | ||
153 | char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent); | |
154 | char *ellipsize(const char *s, size_t length, unsigned percent); | |
155 | ||
156 | bool nulstr_contains(const char*nulstr, const char *needle); | |
157 | ||
158 | char* strshorten(char *s, size_t l); | |
159 | ||
160 | char *strreplace(const char *text, const char *old_string, const char *new_string); | |
161 | ||
162 | char *strip_tab_ansi(char **p, size_t *l); | |
163 | ||
164 | char *strextend(char **x, ...) _sentinel_; | |
165 | ||
166 | char *strrep(const char *s, unsigned n); | |
167 | ||
168 | int split_pair(const char *s, const char *sep, char **l, char **r); | |
169 | ||
170 | int free_and_strdup(char **p, const char *s); | |
171 | ||
172 | /* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */ | |
173 | static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) { | |
174 | ||
175 | if (needlelen <= 0) | |
176 | return (void*) haystack; | |
177 | ||
178 | if (haystacklen < needlelen) | |
179 | return NULL; | |
180 | ||
181 | assert(haystack); | |
182 | assert(needle); | |
183 | ||
184 | return memmem(haystack, haystacklen, needle, needlelen); | |
185 | } | |
186 | ||
9fe4ea21 LP |
187 | void* memory_erase(void *p, size_t l); |
188 | char *string_erase(char *x); | |
07630cea LP |
189 | |
190 | char *string_free_erase(char *s); | |
191 | DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase); | |
192 | #define _cleanup_string_free_erase_ _cleanup_(string_free_erasep) | |
f3e2e81d LP |
193 | |
194 | bool string_is_safe(const char *p) _pure_; |