From c4a7b2c56e907e39fa9a6cdb21c1970464abd44e Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 19 Mar 2014 00:54:41 +0100
Subject: util: add new FOREACH_STRING() macro as syntactic sugar to iterate
 through a number of fixed strings

---
 src/shared/strv.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/shared')

diff --git a/src/shared/strv.h b/src/shared/strv.h
index b356d034c6..e26ab828d2 100644
--- a/src/shared/strv.h
+++ b/src/shared/strv.h
@@ -119,3 +119,15 @@ void strv_print(char **l);
         })
 
 #define STR_IN_SET(x, ...) strv_contains(STRV_MAKE(__VA_ARGS__), x)
+
+#define FOREACH_STRING(x, ...)                               \
+        for (char **_l = ({                                  \
+                char **_ll = STRV_MAKE(__VA_ARGS__);         \
+                x = _ll ? _ll[0] : NULL;                     \
+                _ll;                                         \
+        });                                                  \
+        _l && *_l;                                           \
+        x = ({                                               \
+                _l ++;                                       \
+                _l[0];                                       \
+        }))
-- 
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