Make klogger use java.util.logging.* on the JVM (#1466)

korlibs · Mar 24, 2023 · d06059b · d06059b
1 parent 8bfef88
commit d06059b
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diff --git a/klogger/src/commonMain/kotlin/com/soywiz/klogger/Logger.kt b/klogger/src/commonMain/kotlin/com/soywiz/klogger/Logger.kt
@@ -19,6 +19,8 @@ import com.soywiz.klogger.internal.*
  * ```
  */
 class Logger private constructor(val name: String, val normalizedName: String, val dummy: Boolean) {
+    var nativeLogger: Any? = null
+
     var optLevel: Level? = null
     var optOutput: Output? = null
 

diff --git a/klogger/src/jvmMain/kotlin/com/soywiz/klogger/DefaultLogOutput.kt b/klogger/src/jvmMain/kotlin/com/soywiz/klogger/DefaultLogOutput.kt
@@ -1,5 +1,23 @@
 package com.soywiz.klogger
 
+import java.util.logging.Level
+
 actual object DefaultLogOutput : Logger.Output {
-    override fun output(logger: Logger, level: Logger.Level, msg: Any?) = Logger.ConsoleLogOutput.output(logger, level, msg)
+    override fun output(logger: Logger, level: Logger.Level, msg: Any?) {
+        if (logger.nativeLogger == null) {
+            logger.nativeLogger = java.util.logging.Logger.getLogger(logger.name)
+        }
+        //println("logger=$logger, level=$level, msg=$msg")
+        (logger.nativeLogger as java.util.logging.Logger).log(level.toJava(), msg.toString())
+    }
+}
+
+fun Logger.Level.toJava(): Level = when (this) {
+    Logger.Level.NONE -> Level.OFF
+    Logger.Level.FATAL -> Level.SEVERE
+    Logger.Level.ERROR -> Level.SEVERE
+    Logger.Level.WARN -> Level.WARNING
+    Logger.Level.INFO -> Level.FINE
+    Logger.Level.DEBUG -> Level.FINEST
+    Logger.Level.TRACE -> Level.ALL
 }