added default_with_output_dir

src/lib.rs

@@ -244,13 +244,23 @@ pub fn new_log<P: AsRef<Path>>(
     guard
 }
 
+
 pub fn default(
     with_filename: bool,
     with_line_number: bool,
     level: tracing::Level,
+) -> tracing_appender::non_blocking::WorkerGuard {
+    default_with_output_dir("./.output", with_filename, with_line_number, level)
+}
+
+pub fn default_with_output_dir(
+    output_dir: &str,
+    with_filename: bool,
+    with_line_number: bool,
+    level: tracing::Level,
 ) -> tracing_appender::non_blocking::WorkerGuard {
     new_log(
-        "./.output",
+        output_dir,
         7,
         PeriodGap::Daily,
         level,