Split project over multiple files

src/basic.h

@@ -0,0 +1,28 @@
+#ifndef BASIC_INCLUDED
+#define BASIC_INCLUDED
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct {
+    char data[64];
+} SHA256;
+
+typedef struct {
+    char *ptr;
+    int   len;
+} string;
+
+typedef uint64_t Time;
+#define INVALID_TIME ((Time) -1)
+
+#define S(X) ((string) { (X), (int) sizeof(X)-1 })
+
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+
+#define UNREACHABLE __builtin_trap();
+
+bool streq(string s1, string s2);
+Time get_current_time(void);
+
+#endif // BASIC_INCLUDED