Initial push

data.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "util.h"
+
+/**
+ * A simple key-value entry
+ *
+ * Provides a simple, inefficient, key-value when combined with `get()`,
+ * `set()`, and `delete()`.
+ */
+struct tuple {
+    string key;
+    char *value;
+    size_t value_length;
+};
+
+/**
+ * Get the value matching the key in an array of tuples
+ *
+ * Returns a pointer to the begin of the value, stores its length in
+ * `value_length`.
+ */
+const char *get(const string key, struct tuple *tuples, size_t n_tuples,
+                size_t *value_length);
+
+/**
+ * Set the value for the key in an array of tuples
+ *
+ * Returns true if a value was overwritten, false if it was created.
+ */
+bool set(const string key, char *value, size_t value_length,
+         struct tuple *tuples, size_t n_tuples);
+
+/**
+ * Deletes the key in the array of tuples.
+ *
+ * Returns true if it existed.
+ */
+bool delete (const string key, struct tuple *tuples, size_t n_tuples);