-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <fnmatch.h>
char **strv_free(char **l) {
strv_clear(l);
- free(l);
- return NULL;
+ return mfree(l);
}
char **strv_free_erase(char **l) {
return r;
}
-unsigned strv_length(char * const *l) {
- unsigned n = 0;
+size_t strv_length(char * const *l) {
+ size_t n = 0;
if (!l)
return 0;
char **strv_new_ap(const char *x, va_list ap) {
const char *s;
- char **a;
- unsigned n = 0, i = 0;
+ _cleanup_strv_free_ char **a = NULL;
+ size_t n = 0, i = 0;
va_list aq;
/* As a special trick we ignore all listed strings that equal
if (x != STRV_IGNORE) {
a[i] = strdup(x);
if (!a[i])
- goto fail;
+ return NULL;
i++;
}
a[i] = strdup(s);
if (!a[i])
- goto fail;
+ return NULL;
i++;
}
a[i] = NULL;
- return a;
-
-fail:
- strv_free(a);
- return NULL;
+ return TAKE_PTR(a);
}
char **strv_new(const char *x, ...) {
p = strv_length(*a);
q = strv_length(b);
- t = realloc(*a, sizeof(char*) * (p + q + 1));
+ t = reallocarray(*a, p + q + 1, sizeof(char *));
if (!t)
return -ENOMEM;
char **strv_split(const char *s, const char *separator) {
const char *word, *state;
size_t l;
- unsigned n, i;
+ size_t n, i;
char **r;
assert(s);
#if 0 /// UNNEEDED by elogind
char **strv_split_newlines(const char *s) {
char **l;
- unsigned n;
+ size_t n;
assert(s);
return l;
}
+#endif // 0
int strv_split_extract(char ***t, const char *s, const char *separators, ExtractFlags flags) {
_cleanup_strv_free_ char **l = NULL;
if (!GREEDY_REALLOC(l, allocated, n + 2))
return -ENOMEM;
- l[n++] = word;
- word = NULL;
+ l[n++] = TAKE_PTR(word);
l[n] = NULL;
}
return -ENOMEM;
}
- *t = l;
- l = NULL;
+ *t = TAKE_PTR(l);
return (int) n;
}
-#endif // 0
char *strv_join(char **l, const char *separator) {
char *r, *e;
}
#if 0 /// UNNEEDED by elogind
-char *strv_join_quoted(char **l) {
- char *buf = NULL;
- char **s;
- size_t allocated = 0, len = 0;
-
- STRV_FOREACH(s, l) {
- /* assuming here that escaped string cannot be more
- * than twice as long, and reserving space for the
- * separator and quotes.
- */
- _cleanup_free_ char *esc = NULL;
- size_t needed;
-
- if (!GREEDY_REALLOC(buf, allocated,
- len + strlen(*s) * 2 + 3))
- goto oom;
-
- esc = cescape(*s);
- if (!esc)
- goto oom;
-
- needed = snprintf(buf + len, allocated - len, "%s\"%s\"",
- len > 0 ? " " : "", esc);
- assert(needed < allocated - len);
- len += needed;
- }
-
- if (!buf)
- buf = malloc0(1);
-
- return buf;
-
- oom:
- free(buf);
- return NULL;
-}
#endif // 0
-
int strv_push(char ***l, char *value) {
char **c;
- unsigned n, m;
+ size_t n, m;
if (!value)
return 0;
if (m < n)
return -ENOMEM;
- c = realloc_multiply(*l, sizeof(char*), m);
+ c = reallocarray(*l, m, sizeof(char*));
if (!c)
return -ENOMEM;
int strv_push_pair(char ***l, char *a, char *b) {
char **c;
- unsigned n, m;
+ size_t n, m;
if (!a && !b)
return 0;
if (m < n)
return -ENOMEM;
- c = realloc_multiply(*l, sizeof(char*), m);
+ c = reallocarray(*l, m, sizeof(char*));
if (!c)
return -ENOMEM;
return 0;
}
-int strv_push_prepend(char ***l, char *value) {
+int strv_insert(char ***l, size_t position, char *value) {
char **c;
- unsigned n, m, i;
+ size_t n, m, i;
if (!value)
return 0;
n = strv_length(*l);
+ position = MIN(position, n);
/* increase and check for overflow */
m = n + 2;
if (!c)
return -ENOMEM;
- for (i = 0; i < n; i++)
+ for (i = 0; i < position; i++)
+ c[i] = (*l)[i];
+ c[position] = value;
+ for (i = position; i < n; i++)
c[i+1] = (*l)[i];
- c[0] = value;
c[n+1] = NULL;
free(*l);
if (!v)
return -ENOMEM;
- c = realloc_multiply(*l, sizeof(char*), m);
+ c = reallocarray(*l, m, sizeof(char*));
if (!c) {
free(v);
return -ENOMEM;
}
char **strv_parse_nulstr(const char *s, size_t l) {
+ /* l is the length of the input data, which will be split at NULs into
+ * elements of the resulting strv. Hence, the number of items in the resulting strv
+ * will be equal to one plus the number of NUL bytes in the l bytes starting at s,
+ * unless s[l-1] is NUL, in which case the final empty string is not stored in
+ * the resulting strv, and length is equal to the number of NUL bytes.
+ *
+ * Note that contrary to a normal nulstr which cannot contain empty strings, because
+ * the input data is terminated by any two consequent NUL bytes, this parser accepts
+ * empty strings in s.
+ */
+
const char *p;
- unsigned c = 0, i = 0;
+ size_t c = 0, i = 0;
char **v;
assert(s || l <= 0);
#if 0 /// UNNEEDED by elogind
int strv_make_nulstr(char **l, char **p, size_t *q) {
+ /* A valid nulstr with two NULs at the end will be created, but
+ * q will be the length without the two trailing NULs. Thus the output
+ * string is a valid nulstr and can be iterated over using NULSTR_FOREACH,
+ * and can also be parsed by strv_parse_nulstr as long as the length
+ * is provided separately.
+ */
+
size_t n_allocated = 0, n = 0;
_cleanup_free_ char *m = NULL;
char **i;
z = strlen(*i);
- if (!GREEDY_REALLOC(m, n_allocated, n + z + 1))
+ if (!GREEDY_REALLOC(m, n_allocated, n + z + 2))
return -ENOMEM;
memcpy(m + n, *i, z + 1);
m = new0(char, 1);
if (!m)
return -ENOMEM;
- n = 0;
- }
+ n = 1;
+ } else
+ /* make sure there is a second extra NUL at the end of resulting nulstr */
+ m[n] = '\0';
+ assert(n > 0);
*p = m;
- *q = n;
+ *q = n - 1;
m = NULL;
}
char **strv_sort(char **l) {
-
- if (strv_isempty(l))
- return l;
-
- qsort(l, strv_length(l), sizeof(char*), str_compare);
+ qsort_safe(l, strv_length(l), sizeof(char*), str_compare);
return l;
}
-#if 0 /// UNNEEDED by elogind
bool strv_equal(char **a, char **b) {
if (strv_isempty(a))
puts(*s);
}
+#if 0 /// UNNEEDED by elogind
int strv_extendf(char ***l, const char *format, ...) {
va_list ap;
char *x;
}
char **strv_reverse(char **l) {
- unsigned n, i;
+ size_t n, i;
n = strv_length(l);
if (n <= 1)
for (i = l; *i; i++)
strv_free(*i);
- free(l);
- return NULL;
+ return mfree(l);
}
char **strv_skip(char **l, size_t n) {
return l;
}
+#endif // 0
int strv_extend_n(char ***l, const char *value, size_t n) {
size_t i, j, k;
k = strv_length(*l);
- nl = realloc(*l, sizeof(char*) * (k + n + 1));
+ nl = reallocarray(*l, k + n + 1, sizeof(char *));
if (!nl)
return -ENOMEM;
return -ENOMEM;
}
+#if 0 /// UNNEEDED by elogind
int fputstrv(FILE *f, char **l, const char *separator, bool *space) {
bool b = false;
char **s;
~ianmdlvl / elogind.git / blobdiff