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(const char *x, ...) _sentinel_;
125 #define strjoina(a, ...) \
127 const char *_appendees_[] = { a, __VA_ARGS__ }; \
131 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
132 _len_ += strlen(_appendees_[_i_]); \
133 _p_ = _d_ = alloca(_len_ + 1); \
134 for (_i_ = 0; _i_ < ELEMENTSOF(_appendees_) && _appendees_[_i_]; _i_++) \
135 _p_ = stpcpy(_p_, _appendees_[_i_]); \
140 char *strstrip(char *s);
141 #if 0 /// UNNEEDED by elogind
142 char *delete_chars(char *s, const char *bad);
144 char *truncate_nl(char *s);
146 #if 0 /// UNNEEDED by elogind
147 char ascii_tolower(char x);
148 char *ascii_strlower(char *s);
149 char *ascii_strlower_n(char *s, size_t n);
151 char ascii_toupper(char x);
152 char *ascii_strupper(char *s);
154 int ascii_strcasecmp_n(const char *a, const char *b, size_t n);
155 int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m);
157 bool chars_intersect(const char *a, const char *b) _pure_;
160 static inline bool _pure_ in_charset(const char *s, const char* charset) {
163 return s[strspn(s, charset)] == '\0';
166 bool string_has_cc(const char *p, const char *ok) _pure_;
168 char *ellipsize_mem(const char *s, size_t old_length_bytes, size_t new_length_columns, unsigned percent);
169 char *ellipsize(const char *s, size_t length, unsigned percent);
171 bool nulstr_contains(const char*nulstr, const char *needle);
173 char* strshorten(char *s, size_t l);
175 char *strreplace(const char *text, const char *old_string, const char *new_string);
177 char *strip_tab_ansi(char **p, size_t *l);
179 char *strextend(char **x, ...) _sentinel_;
181 char *strrep(const char *s, unsigned n);
183 int split_pair(const char *s, const char *sep, char **l, char **r);
185 int free_and_strdup(char **p, const char *s);
187 /* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
188 static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
191 return (void*) haystack;
193 if (haystacklen < needlelen)
199 return memmem(haystack, haystacklen, needle, needlelen);
202 void* memory_erase(void *p, size_t l);
203 char *string_erase(char *x);
205 char *string_free_erase(char *s);
206 DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase);
207 #define _cleanup_string_free_erase_ _cleanup_(string_free_erasep)
209 bool string_is_safe(const char *p) _pure_;