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_QUOTED(word, length, s, state) \
115 _FOREACH_WORD(word, length, s, WHITESPACE, true, state)
117 #define _FOREACH_WORD(word, length, s, separator, quoted, state) \
118 for ((state) = (s), (word) = split(&(state), &(length), (separator), (quoted)); (word); (word) = split(&(state), &(length), (separator), (quoted)))
120 char *strappend(const char *s, const char *suffix);
121 char *strnappend(const char *s, const char *suffix, size_t length);
123 char *strjoin_real(const char *x, ...) _sentinel_;
124 #define strjoin(a, ...) strjoin_real((a), __VA_ARGS__, NULL)
126 #define strjoina(a, ...) \
128 const char *_appendees_[] = { a, __VA_ARGS__ }; \
132 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
133 _len_ += strlen(_appendees_[_i_]); \
134 _p_ = _d_ = alloca(_len_ + 1); \
135 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
136 _p_ = stpcpy(_p_, _appendees_[_i_]); \
141 char *strstrip(char *s);
142 #if 0 /// UNNEEDED by elogind
143 char *delete_chars(char *s, const char *bad);
145 char *truncate_nl(char *s);
147 #if 0 /// UNNEEDED by elogind
148 char ascii_tolower(char x);
149 char *ascii_strlower(char *s);
150 char *ascii_strlower_n(char *s, size_t n);
152 char ascii_toupper(char x);
153 char *ascii_strupper(char *s);
155 int ascii_strcasecmp_n(const char *a, const char *b, size_t n);
156 int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m);
158 bool chars_intersect(const char *a, const char *b) _pure_;
161 static inline bool _pure_ in_charset(const char *s, const char* charset) {
164 return s[strspn(s, charset)] == '\0';
167 bool string_has_cc(const char *p, const char *ok) _pure_;
169 char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent);
170 char *ellipsize(const char *s, size_t length, unsigned percent);
172 bool nulstr_contains(const char*nulstr, const char *needle);
174 char* strshorten(char *s, size_t l);
176 char *strreplace(const char *text, const char *old_string, const char *new_string);
178 char *strip_tab_ansi(char **p, size_t *l);
180 char *strextend(char **x, ...) _sentinel_;
182 char *strrep(const char *s, unsigned n);
184 int split_pair(const char *s, const char *sep, char **l, char **r);
186 int free_and_strdup(char **p, const char *s);
188 /* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
189 static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
192 return (void*) haystack;
194 if (haystacklen < needlelen)
200 return memmem(haystack, haystacklen, needle, needlelen);
203 void* memory_erase(void *p, size_t l);
204 char *string_erase(char *x);
206 char *string_free_erase(char *s);
207 DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase);
208 #define _cleanup_string_free_erase_ _cleanup_(string_free_erasep)
210 bool string_is_safe(const char *p) _pure_;