Add clean-logs-older-than option

jay-config/src/logging.rs

@@ -3,7 +3,10 @@
 //! Note that you can use the `log` crate for logging. All invocations of `log::info` etc.
 //! automatically log into the compositors log.
 
-use serde::{Deserialize, Serialize};
+use {
+    serde::{Deserialize, Serialize},
+    std::time::SystemTime,
+};
 
 /// The log level of the compositor or a log message.
 #[derive(Serialize, Deserialize, Copy, Clone, Debug)]
@@ -19,3 +22,13 @@ pub enum LogLevel {
 pub fn set_log_level(level: LogLevel) {
     get!().set_log_level(level);
 }
+
+/// If this function is called during startup, Jay's log files before `time` are deleted.
+///
+/// The current log file is never deleted, nor are any other logfiles of active Jay instances (e.g.
+/// on another VT), even if `time` is in the future.
+///
+/// Calling this function after startup has no effect.
+pub fn clean_logs_older_than(time: SystemTime) {
+    get!().clean_logs_older_than(time);
+}