shared: add nm_pstr_hash() and nm_pstr_equal()

2 files changed, 35 insertions, 0 deletions

diff --git a/shared/nm-utils/nm-hash-utils.c b/shared/nm-utils/nm-hash-utils.c
index b096be692c..8d8c21ce55 100644
--- a/shared/nm-utils/nm-hash-utils.c
+++ b/shared/nm-utils/nm-hash-utils.c
@@ -159,3 +159,27 @@ nm_direct_hash (gconstpointer ptr)
 {
 	return nm_hash_ptr (ptr);
 }
+
+/*****************************************************************************/
+
+guint
+nm_pstr_hash (gconstpointer p)
+{
+	const char *const*s = p;
+
+	if (!s)
+		return nm_hash_static (101061439u);
+	return nm_hash_str (*s);
+}
+
+gboolean
+nm_pstr_equal (gconstpointer a, gconstpointer b)
+{
+	const char *const*s1 = a;
+	const char *const*s2 = b;
+
+	return    (s1 == s2)
+	       || (   s1
+	           && s2
+	           && nm_streq0 (*s1, *s2));
+}
diff --git a/shared/nm-utils/nm-hash-utils.h b/shared/nm-utils/nm-hash-utils.h
index 21396f2814..3bd3f652fb 100644
--- a/shared/nm-utils/nm-hash-utils.h
+++ b/shared/nm-utils/nm-hash-utils.h
@@ -209,4 +209,15 @@ guint nm_direct_hash (gconstpointer str);
 guint nm_hash_str (const char *str);
 guint nm_str_hash (gconstpointer str);
 
+/*****************************************************************************/
+
+/* nm_pstr_*() are for hashing keys that are pointers to strings,
+ * that is, "const char *const*" types, using strcmp(). */
+
+guint nm_pstr_hash (gconstpointer p);
+
+gboolean nm_pstr_equal (gconstpointer a, gconstpointer b);
+
+/*****************************************************************************/
+
 #endif /* __NM_HASH_UTILS_H__ */