1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
***/
#include <alloca.h>
#include <stdbool.h>
#include <stddef.h>
#include <string.h>
#include "macro.h"
/* What is interpreted as whitespace? */
#define WHITESPACE " \t\n\r"
#define NEWLINE "\n\r"
#define QUOTES "\"\'"
#define COMMENTS "#;"
#define GLOB_CHARS "*?["
#define DIGITS "0123456789"
#define LOWERCASE_LETTERS "abcdefghijklmnopqrstuvwxyz"
#define UPPERCASE_LETTERS "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define LETTERS LOWERCASE_LETTERS UPPERCASE_LETTERS
#define ALPHANUMERICAL LETTERS DIGITS
#define HEXDIGITS DIGITS "abcdefABCDEF"
#define streq(a,b) (strcmp((a),(b)) == 0)
#define strneq(a, b, n) (strncmp((a), (b), (n)) == 0)
#define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
#define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
int strcmp_ptr(const char *a, const char *b) _pure_;
static inline bool streq_ptr(const char *a, const char *b) {
return strcmp_ptr(a, b) == 0;
}
static inline const char* strempty(const char *s) {
return s ?: "";
}
static inline const char* strnull(const char *s) {
return s ?: "(null)";
}
static inline const char *strna(const char *s) {
return s ?: "n/a";
}
static inline bool isempty(const char *p) {
return !p || !p[0];
}
static inline const char *empty_to_null(const char *p) {
return isempty(p) ? NULL : p;
}
static inline const char *strdash_if_empty(const char *str) {
return isempty(str) ? "-" : str;
}
static inline char *startswith(const char *s, const char *prefix) {
size_t l;
l = strlen(prefix);
if (strncmp(s, prefix, l) == 0)
return (char*) s + l;
return NULL;
}
static inline char *startswith_no_case(const char *s, const char *prefix) {
size_t l;
l = strlen(prefix);
if (strncasecmp(s, prefix, l) == 0)
return (char*) s + l;
return NULL;
}
char *endswith(const char *s, const char *postfix) _pure_;
char *endswith_no_case(const char *s, const char *postfix) _pure_;
char *first_word(const char *s, const char *word) _pure_;
const char* split(const char **state, size_t *l, const char *separator, bool quoted);
#define FOREACH_WORD(word, length, s, state) \
_FOREACH_WORD(word, length, s, WHITESPACE, false, state)
#define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
_FOREACH_WORD(word, length, s, separator, false, state)
#define _FOREACH_WORD(word, length, s, separator, quoted, state) \
for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted)))
char *strappend(const char *s, const char *suffix);
char *strnappend(const char *s, const char *suffix, size_t length);
char *strjoin_real(const char *x, ...) _sentinel_;
#define strjoin(a, ...) strjoin_real((a), __VA_ARGS__, NULL)
#define strjoina(a, ...) \
({ \
const char *_appendees_[] = { a, __VA_ARGS__ }; \
char *_d_, *_p_; \
size_t _len_ = 0; \
unsigned _i_; \
for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
_len_ += strlen(_appendees_[_i_]); \
_p_ = _d_ = alloca(_len_ + 1); \
for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
_p_ = stpcpy(_p_, _appendees_[_i_]); \
*_p_ = 0; \
_d_; \
})
char *strstrip(char *s);
char *delete_chars(char *s, const char *bad);
char *delete_trailing_chars(char *s, const char *bad);
char *truncate_nl(char *s);
static inline char *skip_leading_chars(const char *s, const char *bad) {
if (!s)
return NULL;
if (!bad)
bad = WHITESPACE;
return (char*) s + strspn(s, bad);
}
char ascii_tolower(char x);
char *ascii_strlower(char *s);
char *ascii_strlower_n(char *s, size_t n);
char ascii_toupper(char x);
char *ascii_strupper(char *s);
int ascii_strcasecmp_n(const char *a, const char *b, size_t n);
int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m);
bool chars_intersect(const char *a, const char *b) _pure_;
static inline bool _pure_ in_charset(const char *s, const char* charset) {
assert(s);
assert(charset);
return s[strspn(s, charset)] == '\0';
}
bool string_has_cc(const char *p, const char *ok) _pure_;
char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent);
char *ellipsize(const char *s, size_t length, unsigned percent);
bool nulstr_contains(const char *nulstr, const char *needle);
char* strshorten(char *s, size_t l);
char *strreplace(const char *text, const char *old_string, const char *new_string);
char *strip_tab_ansi(char **ibuf, size_t *_isz, size_t highlight[2]);
char *strextend_with_separator(char **x, const char *separator, ...) _sentinel_;
#define strextend(x, ...) strextend_with_separator(x, NULL, __VA_ARGS__)
char *strrep(const char *s, unsigned n);
int split_pair(const char *s, const char *sep, char **l, char **r);
int free_and_strdup(char **p, const char *s);
/* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
if (needlelen <= 0)
return (void*) haystack;
if (haystacklen < needlelen)
return NULL;
assert(haystack);
assert(needle);
return memmem(haystack, haystacklen, needle, needlelen);
}
#if !HAVE_EXPLICIT_BZERO
void explicit_bzero(void *p, size_t l);
#endif
char *string_erase(char *x);
char *string_free_erase(char *s);
DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase);
#define _cleanup_string_free_erase_ _cleanup_(string_free_erasep)
bool string_is_safe(const char *p) _pure_;
static inline size_t strlen_ptr(const char *s) {
if (!s)
return 0;
return strlen(s);
}
|
