1 files changed, 31 insertions, 0 deletions
diff --git a/snag/src/util.h b/snag/src/util.h
new file mode 100644
index 0000000..3813903
--- /dev/null
+++ b/snag/src/util.h
@@ -0,0 +1,31 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stdarg.h>
+#include <stddef.h>
+
+// utility for errors
+#if !DEBUG
+    void log(const char* format, ...) __attribute__((format(printf, 1, 2)));
+    void die(const char* format, ...) __attribute__((format(printf, 1, 2)));
+    void* emalloc(size_t size, char* alloc_reason);
+#else
+    #define log(fmt, ...) _log(__LINE__, __FILE__, fmt, ##__VA_ARGS__)
+    void _log(int line, const char* file, const char* format, ...) __attribute__((format(printf, 3, 4)));
+
+    #define die(fmt, ...) _die(__LINE__, __FILE__, fmt, ##__VA_ARGS__)
+    void _die(int line, const char* file, const char* format, ...) __attribute__((format(printf, 3, 4)));
+
+    #define emalloc(size, alloc_reason) _emalloc(__LINE__, __FILE__, size, alloc_reason)
+    void* _emalloc(int line, const char* file, size_t size, char* alloc_reason);
+#endif
+
+// functions for outputting and displaying text
+#define printout(fmt, ...) fprintf(stdout, fmt, ##__VA_ARGS__)
+#define print(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
+
+// string functions
+char* vastrcat_(int dummy, ...);
+#define vastrcat(...) vastrcat_(0, __VA_ARGS__, NULL)
+
+#endif