From 82443be506be8b421fdd2771ad3e9a7d3014cb7b Mon Sep 17 00:00:00 2001
From: williamvds <william@williamvds.me>
Date: Wed, 21 Oct 2020 17:14:37 +0100
Subject: [PATCH] Add strv_prepend

Inserts a copy of the value at the head of the list.
---
 src/basic/strv.c | 13 +++++++++++++
 src/basic/strv.h |  1 +
 2 files changed, 14 insertions(+)

diff --git a/src/basic/strv.c b/src/basic/strv.c
index b2b6de388a..c5e6dd5f21 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -537,6 +537,19 @@ int strv_consume_prepend(char ***l, char *value) {
         return r;
 }
 
+int strv_prepend(char ***l, const char *value) {
+        char *v;
+
+        if (!value)
+                return 0;
+
+        v = strdup(value);
+        if (!v)
+                return -ENOMEM;
+
+        return strv_consume_prepend(l, v);
+}
+
 int strv_extend(char ***l, const char *value) {
         char *v;
 
diff --git a/src/basic/strv.h b/src/basic/strv.h
index 919fabf75a..f2aa6c239b 100644
--- a/src/basic/strv.h
+++ b/src/basic/strv.h
@@ -34,6 +34,7 @@ size_t strv_length(char * const *l) _pure_;
 
 int strv_extend_strv(char ***a, char * const *b, bool filter_duplicates);
 int strv_extend_strv_concat(char ***a, char * const *b, const char *suffix);
+int strv_prepend(char ***l, const char *value);
 int strv_extend(char ***l, const char *value);
 int strv_extendf(char ***l, const char *format, ...) _printf_(2,0);
 int strv_extend_front(char ***l, const char *value);