Add register method and version checks to the ANSI subsystem

ansi/src/main/kotlin/de/staropensource/engine/ansi/AnsiSubsystem.kt

@@ -19,6 +19,7 @@
 
 package de.staropensource.engine.ansi
 
+import de.staropensource.engine.base.Engine
 import de.staropensource.engine.base.implementable.Subsystem
 import de.staropensource.engine.base.logging.Logger
 import de.staropensource.engine.base.utility.dnihbd.BuildInformation
@@ -40,6 +41,7 @@ class AnsiSubsystem : Subsystem() {
          *
          * @since v1-alpha10
          */
+        @JvmStatic
         internal val logger: Logger = Logger(channel = "engine-ansi")
 
         /**
@@ -50,7 +52,19 @@ class AnsiSubsystem : Subsystem() {
          * @see BuildInformation
          * @since v1-alpha10
          */
+        @JvmStatic
         var info: BuildInformation? = null
+
+        /**
+         * Registers this subsystem.
+         *
+         * @since v1-alpha10
+         */
+        @JvmStatic
+        fun register() {
+            if (!Engine.getSubsystems().map { item -> item::class }.contains(AnsiSubsystem::class))
+                Engine.registerSubsystem(AnsiSubsystem())
+        }
     }
 
 
@@ -62,6 +76,20 @@ class AnsiSubsystem : Subsystem() {
     // -----> Lifecycle
     override fun initialize() {
         info = BuildInformation("sosengine-ansi")
+
+        if (Engine.info!!.versionString(semver = false) != info!!.versionString(semver = false))
+            logger.crash("""
+                The version of the core engine and the ANSI subsystem differs.
+                Engine:         ${Engine.info!!.versionString(semver = false)}
+                ANSI subsystem: ${info!!.versionString(semver = false)}
+            """.trimIndent().trimEnd())
+
+        if (Engine.info!!.gitCommitIdentifierLong != info!!.gitCommitIdentifierLong)
+            logger.crash("""
+                The commit id of the core engine and the ANSI subsystem differs.
+                Engine:         ${Engine.info!!.gitCommitIdentifierLong}
+                ANSI subsystem: ${info!!.gitCommitIdentifierLong}
+            """.trimIndent().trimEnd())
     }
 
     override fun shutdown(final: Boolean, fatalCrash: Boolean) {

testapp/src/main/kotlin/de/staropensource/engine/testapp/Main.kt

@@ -54,6 +54,9 @@ class Main private constructor() {
             // Update engine configuration
             EngineConfiguration.logLevels = Level.entries.toMutableSet()
 
+            // Register subsystems
+            AnsiSubsystem.register()
+
             // Initialize engine
             Engine.initialize()