Use callback function to log to stderr

1 files changed, 17 insertions, 5 deletions

diff --git a/src/cube.c b/src/cube.c
index 97f7844..890e3fb 100644
--- a/src/cube.c
+++ b/src/cube.c
@@ -1,20 +1,32 @@
 #include <inttypes.h>
+#include <stdarg.h>
 #include <stdbool.h>
 #include <string.h>
 
+void (*nissy_log)(const char *, va_list);
+
+void
+_log(const char *str, ...) /* TODO: rename */
+{
+        va_list args;
+
+        if (nissy_log != NULL) {
+                va_start(args, str);
+                nissy_log(str, args);
+                va_end(args);
+        }
+}
+
 #ifdef DEBUG
-#include <stdio.h>
 #define _static
 #define _static_inline
-#define DBG_LOG(...) fprintf(stderr, __VA_ARGS__)
-#define DBG_WARN(condition, ...) if (!(condition)) DBG_LOG(__VA_ARGS__);
+#define DBG_WARN(condition, ...) if (!(condition)) _log(__VA_ARGS__);
 #define DBG_ASSERT(condition, retval, ...) \
-    if (!(condition)) { DBG_LOG(__VA_ARGS__); return retval; }
+    if (!(condition)) { _log(__VA_ARGS__); return retval; }
 
 #else
 #define _static static
 #define _static_inline static inline
-#define DBG_LOG(...)
 #define DBG_WARN(condition, ...)
 #define DBG_ASSERT(condition, retval, ...)
 #endif