Add a method to determine of two smaps are equal (have the exact same
set of key-value pairs).
Suggested-by: Ben Pfaff <b...@nicira.com>
Signed-off-by: Russell Bryant <rbry...@redhat.com>
---
lib/smap.c | 20 ++++++++++++++++++++
lib/smap.h | 2 ++
2 files changed, 22 insertions(+)
diff --git a/lib/smap.c b/lib/smap.c
index 7fe3ce4..8865a88 100644
--- a/lib/smap.c
+++ b/lib/smap.c
@@ -302,6 +302,26 @@ smap_to_json(const struct smap *smap)
}
return json;
}
+
+/* Returns true if the two maps are equal, meaning that they have the same set
+ * of key-value pairs.
+ */
+bool
+smap_equal(const struct smap *smap1, const struct smap *smap2)
+{
+ if (smap_count(smap1) != smap_count(smap2)) {
+ return false;
+ }
+
+ const struct smap_node *node;
+ SMAP_FOR_EACH (node, smap1) {
+ const char *value2 = smap_get(smap2, node->key);
+ if (!value2 || strcmp(node->value, value2)) {
+ return false;
+ }
+ }
+ return true;
+}
/* Private Helpers. */
diff --git a/lib/smap.h b/lib/smap.h
index caf3efc..cac3878 100644
--- a/lib/smap.h
+++ b/lib/smap.h
@@ -67,4 +67,6 @@ const struct smap_node **smap_sort(const struct smap *);
void smap_from_json(struct smap *, const struct json *);
struct json *smap_to_json(const struct smap *);
+bool smap_equal(const struct smap *, const struct smap *);
+
#endif /* smap.h */
--
2.4.3
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