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Diffstat (limited to 'src/basic/strv.c')
-rw-r--r--src/basic/strv.c88
1 files changed, 79 insertions, 9 deletions
diff --git a/src/basic/strv.c b/src/basic/strv.c
index d5169467da..27cb540895 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -188,17 +188,48 @@ char **strv_new(const char *x, ...) {
return r;
}
-int strv_extend_strv(char ***a, char **b) {
- int r;
- char **s;
+int strv_extend_strv(char ***a, char **b, bool filter_duplicates) {
+ char **s, **t;
+ size_t p, q, i = 0, j;
+
+ assert(a);
+
+ if (strv_isempty(b))
+ return 0;
+
+ p = strv_length(*a);
+ q = strv_length(b);
+
+ t = realloc(*a, sizeof(char*) * (p + q + 1));
+ if (!t)
+ return -ENOMEM;
+
+ t[p] = NULL;
+ *a = t;
STRV_FOREACH(s, b) {
- r = strv_extend(a, *s);
- if (r < 0)
- return r;
+
+ if (filter_duplicates && strv_contains(t, *s))
+ continue;
+
+ t[p+i] = strdup(*s);
+ if (!t[p+i])
+ goto rollback;
+
+ i++;
+ t[p+i] = NULL;
}
- return 0;
+ assert(i <= q);
+
+ return (int) i;
+
+rollback:
+ for (j = 0; j < i; j++)
+ free(t[p + j]);
+
+ t[p] = NULL;
+ return -ENOMEM;
}
int strv_extend_strv_concat(char ***a, char **b, const char *suffix) {
@@ -618,6 +649,41 @@ char **strv_split_nulstr(const char *s) {
return r;
}
+int strv_make_nulstr(char **l, char **p, size_t *q) {
+ size_t n_allocated = 0, n = 0;
+ _cleanup_free_ char *m = NULL;
+ char **i;
+
+ assert(p);
+ assert(q);
+
+ STRV_FOREACH(i, l) {
+ size_t z;
+
+ z = strlen(*i);
+
+ if (!GREEDY_REALLOC(m, n_allocated, n + z + 1))
+ return -ENOMEM;
+
+ memcpy(m + n, *i, z + 1);
+ n += z + 1;
+ }
+
+ if (!m) {
+ m = new0(char, 1);
+ if (!m)
+ return -ENOMEM;
+ n = 0;
+ }
+
+ *p = m;
+ *q = n;
+
+ m = NULL;
+
+ return 0;
+}
+
bool strv_overlap(char **a, char **b) {
char **i;
@@ -644,8 +710,12 @@ char **strv_sort(char **l) {
}
bool strv_equal(char **a, char **b) {
- if (!a || !b)
- return a == b;
+
+ if (strv_isempty(a))
+ return strv_isempty(b);
+
+ if (strv_isempty(b))
+ return false;
for ( ; *a || *b; ++a, ++b)
if (!streq_ptr(*a, *b))