1 files changed, 45 insertions, 0 deletions
diff --git a/log.c b/log.c
new file mode 100644
index 0000000..bdf7198
--- /dev/null
+++ b/log.c
@@ -0,0 +1,45 @@
+/*
+ * Created by yuuta on 1/1/22.
+ */
+
+#include "common.h"
+#include "log.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <assert.h>
+
+void g_log(enum log_level level,
+                  const char *file,
+                  int line,
+                  const char *format,
+                  ...) {
+    int stream = level <= log_warn || level == log_debug ? p_env.err : p_env.out;
+    switch (level) {
+        case log_fetal:
+            dprintf(stream, "F");
+            break;
+        case log_error:
+            dprintf(stream, "E");
+            break;
+        case log_warn:
+            dprintf(stream, "W");
+            break;
+        case log_info:
+            dprintf(stream, "I");
+            break;
+        case log_debug:
+            dprintf(stream, "D");
+            break;
+        default:
+            dprintf(p_env.err, "Unknown log level: %d.\n", level);
+            assert(0);
+    }
+    dprintf(stream, "[%s:%d]: ",
+            file, line);
+    va_list list;
+    va_start(list, format);
+    vdprintf(stream, format, list);
+    va_end(list);
+    dprintf(stream, "\n");
+}