src/shared/strv.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2010 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24 #include <stdarg.h>
  25 #include <stdbool.h>
  26
  27 #include "macro.h"
  28
  29 char *strv_find(char **l, const char *name);
  30 char *strv_find_prefix(char **l, const char *name);
  31
  32 void strv_free(char **l);
  33 static inline void strv_freep(char ***l) {
  34         strv_free(*l);
  35 }
  36
  37 char **strv_copy(char * const *l) _malloc_;
  38 unsigned strv_length(char * const *l);
  39
  40 char **strv_merge(char **a, char **b);
  41 char **strv_merge_concat(char **a, char **b, const char *suffix);
  42 char **strv_append(char **l, const char *s);
  43 int strv_extend(char ***l, const char *value);
  44 int strv_push(char ***l, char *value);
  45
  46 char **strv_remove(char **l, const char *s);
  47 char **strv_remove_prefix(char **l, const char *s);
  48 char **strv_uniq(char **l);
  49
  50 #define strv_contains(l, s) (!!strv_find((l), (s)))
  51
  52 char **strv_new(const char *x, ...) _sentinel_ _malloc_;
  53 char **strv_new_ap(const char *x, va_list ap) _malloc_;
  54
  55 static inline const char* STRV_IFNOTNULL(const char *x) {
  56         return x ? x : (const char *) -1;
  57 }
  58
  59 static inline bool strv_isempty(char * const *l) {
  60         return !l || !*l;
  61 }
  62
  63 char **strv_split(const char *s, const char *separator) _malloc_;
  64 char **strv_split_quoted(const char *s) _malloc_;
  65 char **strv_split_newlines(const char *s) _malloc_;
  66
  67 char *strv_join(char **l, const char *separator) _malloc_;
  68
  69 char **strv_parse_nulstr(const char *s, size_t l);
  70 char **strv_split_nulstr(const char *s);
  71
  72 bool strv_overlap(char **a, char **b);
  73
  74 #define STRV_FOREACH(s, l)                      \
  75         for ((s) = (l); (s) && *(s); (s)++)
  76
  77 #define STRV_FOREACH_BACKWARDS(s, l)            \
  78         for (; (l) && ((s) >= (l)); (s)--)
  79
  80 #define STRV_FOREACH_PAIR(x, y, l)               \
  81         for ((x) = (l), (y) = (x+1); (x) && *(x) && *(y); (x) += 2, (y) = (x + 1))
  82
  83
  84 char **strv_sort(char **l);
  85 void strv_print(char **l);