set: introduce strv_sort()

2 files changed, 17 insertions, 0 deletions

diff --git a/src/shared/strv.c b/src/shared/strv.c
index 822b2dc888..1b8e27bc1b 100644
--- a/src/shared/strv.c
+++ b/src/shared/strv.c
@@ -735,3 +735,18 @@ bool strv_overlap(char **a, char **b) {
 
         return false;
 }
+
+static int str_compare(const void *_a, const void *_b) {
+        const char **a = (const char**) _a, **b = (const char**) _b;
+
+        return strcmp(*a, *b);
+}
+
+char **strv_sort(char **l) {
+
+        if (strv_isempty(l))
+                return l;
+
+        qsort(l, strv_length(l), sizeof(char*), str_compare);
+        return l;
+}
diff --git a/src/shared/strv.h b/src/shared/strv.h
index 81e33356f9..45558d8960 100644
--- a/src/shared/strv.h
+++ b/src/shared/strv.h
@@ -80,3 +80,5 @@ bool strv_overlap(char **a, char **b);
 
 #define STRV_FOREACH_BACKWARDS(s, l)            \
         for (; (l) && ((s) >= (l)); (s)--)
+
+char **strv_sort(char **l);