1 files changed, 22 insertions, 0 deletions
diff --git a/shared/hash.h b/shared/hash.h
new file mode 100644
index 0000000..ca0af05
--- /dev/null
+++ b/shared/hash.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <stdbool.h>
+
+struct hash;
+
+struct hash_iter {
+	const struct hash *hash;
+	unsigned int bucket;
+	unsigned int entry;
+};
+
+struct hash *hash_new(unsigned int n_buckets, void (*free_value)(void *value));
+void hash_free(struct hash *hash);
+int hash_add(struct hash *hash, const char *key, const void *value);
+int hash_add_unique(struct hash *hash, const char *key, const void *value);
+int hash_del(struct hash *hash, const char *key);
+void *hash_find(const struct hash *hash, const char *key);
+unsigned int hash_get_count(const struct hash *hash);
+void hash_iter_init(const struct hash *hash, struct hash_iter *iter);
+bool hash_iter_next(struct hash_iter *iter, const char **key,
+							const void **value);