1 files changed, 39 insertions, 0 deletions
diff --git a/include/wlr/util/log.h b/include/wlr/util/log.h
new file mode 100644
index 00000000..2acaa2ed
--- /dev/null
+++ b/include/wlr/util/log.h
@@ -0,0 +1,39 @@
+#ifndef _WLR_UTIL_LOG_H
+#define _WLR_UTIL_LOG_H
+#include <stdbool.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+typedef enum {
+	L_SILENT = 0,
+	L_ERROR = 1,
+	L_INFO = 2,
+	L_DEBUG = 3,
+	L_LAST,
+} log_importance_t;
+
+typedef void (*log_callback_t)(log_importance_t importance, const char *fmt, va_list args);
+
+void wlr_init_log(log_callback_t callback);
+
+#ifdef __GNUC__
+#define ATTRIB_PRINTF(start, end) __attribute__((format(printf, start, end)))
+#else
+#define ATTRIB_PRINTF(start, end)
+#endif
+
+void _wlr_log(log_importance_t verbosity, const char *format, ...) ATTRIB_PRINTF(2, 3);
+void _wlr_vlog(log_importance_t verbosity, const char *format, va_list args) ATTRIB_PRINTF(2, 0);
+const char *_strip_path(const char *filepath);
+
+#define wlr_log(verb, fmt, ...) \
+	_wlr_log(verb, "[%s:%d] " fmt, _strip_path(__FILE__), __LINE__, ##__VA_ARGS__)
+
+#define wlr_vlog(verb, fmt, args) \
+	_wlr_vlog(verb, "[%s:%d] " fmt, _strip_path(__FILE__), __LINE__, args)
+
+#define wlr_log_errno(verb, fmt, ...) \
+	wlr_log(verb, fmt ": %s", ##__VA_ARGS__, strerror(errno))
+
+#endif