Add missing files

src/main/java/com/github/games647/colorconsole/common/CommonLogInstaller.java

@@ -0,0 +1,50 @@
+package com.github.games647.colorconsole.common;
+
+import java.io.Serializable;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.nio.charset.Charset;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.core.Appender;
+import org.apache.logging.log4j.core.Layout;
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.DefaultConfiguration;
+import org.apache.logging.log4j.core.layout.PatternLayout;
+import org.apache.logging.log4j.core.pattern.RegexReplacement;
+
+public class CommonLogInstaller {
+
+    public static PatternLayout createLayout(String logFormat) throws ReflectiveOperationException {
+        try {
+            Method builder = PatternLayout.class
+                    .getDeclaredMethod("createLayout", String.class, Configuration.class, RegexReplacement.class
+                            , String.class, String.class);
+
+            return (PatternLayout) builder.invoke(null, logFormat, new DefaultConfiguration(), null
+                    , Charset.defaultCharset().name(), "true");
+        } catch (NoSuchMethodException methodEx) {
+            return PatternLayout.newBuilder()
+                    .withCharset(Charset.defaultCharset())
+                    .withPattern(logFormat)
+                    .withConfiguration(new DefaultConfiguration())
+                    .withAlwaysWriteExceptions(true)
+                    .build();
+        }
+    }
+
+    public static void setLayout(Layout<? extends Serializable> layout, Appender terminalAppender)
+            throws ReflectiveOperationException {
+        Field field = terminalAppender.getClass().getSuperclass().getDeclaredField("layout");
+        field.setAccessible(true);
+        field.set(terminalAppender, layout);
+    }
+
+    public static Appender getTerminalAppender(String terminalName) {
+        LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
+        Configuration conf = ctx.getConfiguration();
+
+        return conf.getAppenders().get(terminalName);
+    }
+}