4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
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.
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.
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/>.
29 /* What is interpreted as whitespace? */
30 #define WHITESPACE " \t\n\r"
31 #define NEWLINE "\n\r"
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
40 #define HEXDIGITS DIGITS "abcdefABCDEF"
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)
47 int strcmp_ptr(const char *a, const char *b) _pure_;
49 static inline bool streq_ptr(const char *a, const char *b) {
50 return strcmp_ptr(a, b) == 0;
53 static inline const char* strempty(const char *s) {
57 static inline const char* strnull(const char *s) {
58 return s ? s : "(null)";
61 static inline const char *strna(const char *s) {
65 static inline bool isempty(const char *p) {
69 #if 0 /// UNNEEDED by elogind
70 static inline const char *empty_to_null(const char *p) {
71 return isempty(p) ? NULL : p;
74 static inline const char *strdash_if_empty(const char *str) {
75 return isempty(str) ? "-" : str;
79 static inline char *startswith(const char *s, const char *prefix) {
83 if (strncmp(s, prefix, l) == 0)
89 #if 0 /// UNNEEDED by elogind
90 static inline char *startswith_no_case(const char *s, const char *prefix) {
94 if (strncasecmp(s, prefix, l) == 0)
101 char *endswith(const char *s, const char *postfix) _pure_;
102 char *endswith_no_case(const char *s, const char *postfix) _pure_;
104 char *first_word(const char *s, const char *word) _pure_;
106 const char* split(const char **state, size_t *l, const char *separator, bool quoted);
108 #define FOREACH_WORD(word, length, s, state) \
109 _FOREACH_WORD(word, length, s, WHITESPACE, false, state)
111 #define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \
112 _FOREACH_WORD(word, length, s, separator, false, state)
114 #define _FOREACH_WORD(word, length, s, separator, quoted, state) \
115 for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted)))
117 char *strappend(const char *s, const char *suffix);
118 char *strnappend(const char *s, const char *suffix, size_t length);
120 char *strjoin_real(const char *x, ...) _sentinel_;
121 #define strjoin(a, ...) strjoin_real((a), __VA_ARGS__, NULL)
123 #define strjoina(a, ...) \
125 const char *_appendees_[] = { a, __VA_ARGS__ }; \
129 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
130 _len_ += strlen(_appendees_[_i_]); \
131 _p_ = _d_ = alloca(_len_ + 1); \
132 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
133 _p_ = stpcpy(_p_, _appendees_[_i_]); \
138 char *strstrip(char *s);
139 #if 0 /// UNNEEDED by elogind
140 char *delete_chars(char *s, const char *bad);
142 char *truncate_nl(char *s);
144 #if 0 /// UNNEEDED by elogind
145 char ascii_tolower(char x);
146 char *ascii_strlower(char *s);
147 char *ascii_strlower_n(char *s, size_t n);
149 char ascii_toupper(char x);
150 char *ascii_strupper(char *s);
152 int ascii_strcasecmp_n(const char *a, const char *b, size_t n);
153 int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m);
155 bool chars_intersect(const char *a, const char *b) _pure_;
158 static inline bool _pure_ in_charset(const char *s, const char* charset) {
161 return s[strspn(s, charset)] == '\0';
164 bool string_has_cc(const char *p, const char *ok) _pure_;
166 char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent);
167 char *ellipsize(const char *s, size_t length, unsigned percent);
169 bool nulstr_contains(const char*nulstr, const char *needle);
171 char* strshorten(char *s, size_t l);
173 char *strreplace(const char *text, const char *old_string, const char *new_string);
175 char *strip_tab_ansi(char **p, size_t *l);
177 char *strextend(char **x, ...) _sentinel_;
179 char *strrep(const char *s, unsigned n);
181 int split_pair(const char *s, const char *sep, char **l, char **r);
183 int free_and_strdup(char **p, const char *s);
185 /* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
186 static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
189 return (void*) haystack;
191 if (haystacklen < needlelen)
197 return memmem(haystack, haystacklen, needle, needlelen);
200 void* memory_erase(void *p, size_t l);
201 char *string_erase(char *x);
203 char *string_free_erase(char *s);
204 DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase);
205 #define _cleanup_string_free_erase_ _cleanup_(string_free_erasep)
207 bool string_is_safe(const char *p) _pure_;