smap: Add smap_get_uint() helper function.

This helper function is required by OVN.

Suggested-by: Dumitru Ceara <dceara@redhat.com>
Signed-off-by: Numan Siddique <nusiddiq@redhat.com>
Acked-by: Dumitru Ceara <dceara@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

2 files changed, 18 insertions, 0 deletions

diff --git a/lib/smap.c b/lib/smap.c
index 149b8b243..e82261497 100644
--- a/lib/smap.c
+++ b/lib/smap.c
@@ -248,6 +248,22 @@ smap_get_int(const struct smap *smap, const char *key, int def)
 }
 
 /* Gets the value associated with 'key' in 'smap' and converts it to an
+ * unsigned int. If 'key' is not in 'smap' or a valid unsigned integer
+ * can't be parsed from it's value, returns 'def'. */
+unsigned int
+smap_get_uint(const struct smap *smap, const char *key, unsigned int def)
+{
+    const char *value = smap_get(smap, key);
+    unsigned int u_value;
+
+    if (!value || !str_to_uint(value, 10, &u_value)) {
+        return def;
+    }
+
+    return u_value;
+}
+
+/* Gets the value associated with 'key' in 'smap' and converts it to an
  * unsigned long long.  If 'key' is not in 'smap' or a valid number can't be
  * parsed from it's value, returns 'def'. */
 unsigned long long int
diff --git a/lib/smap.h b/lib/smap.h
index 766c65f7f..a92115966 100644
--- a/lib/smap.h
+++ b/lib/smap.h
@@ -104,6 +104,8 @@ const char *smap_get_def(const struct smap *, const char *key,
 struct smap_node *smap_get_node(const struct smap *, const char *);
 bool smap_get_bool(const struct smap *smap, const char *key, bool def);
 int smap_get_int(const struct smap *smap, const char *key, int def);
+unsigned int smap_get_uint(const struct smap *smap, const char *key,
+                           unsigned int def);
 unsigned long long int smap_get_ullong(const struct smap *, const char *key,
                                        unsigned long long def);
 bool smap_get_uuid(const struct smap *, const char *key, struct uuid *);