systemctl: move strv_skip_first() out of systemctl.c

Make it generic, call it strv_skip() and move it to strv.[ch]

2 files changed, 14 insertions, 0 deletions

diff --git a/src/basic/strv.c b/src/basic/strv.c
index 92f900936e..9524e80a6f 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -733,3 +733,15 @@ char ***strv_free_free(char ***l) {
         free(l);
         return NULL;
 }
+
+char **strv_skip(char **l, size_t n) {
+
+        while (n > 0) {
+                if (strv_isempty(l))
+                        return l;
+
+                l++, n--;
+        }
+
+        return l;
+}
diff --git a/src/basic/strv.h b/src/basic/strv.h
index 713e91f8f8..4c4b6526de 100644
--- a/src/basic/strv.h
+++ b/src/basic/strv.h
@@ -156,3 +156,5 @@ static inline bool strv_fnmatch_or_empty(char* const* patterns, const char *s, i
 }
 
 char ***strv_free_free(char ***l);
+
+char **strv_skip(char **l, size_t n);