Finish log4j implementation

Project-01/uap25-pro01-tram/build.sh

@@ -25,13 +25,18 @@ if [ -d "$LIB" ]; then
     done
 fi
 
-# 3. Create manifest
+# 3. Copy resources (including log4j2.xml) into the JAR
+if [ -d "resources" ]; then
+    cp -r resources/* "$TMP/"
+fi
+
+# 4. Create manifest
 echo "Main-Class: $MAIN_CLASS" > "$TMP/MANIFEST.MF"
 
-# 4. Package into single jar
+# 5. Package into single jar
 jar cfm "$OUT/$JAR_NAME" "$TMP/MANIFEST.MF" -C "$TMP" .
 
-# 5. Clean temporary files
+# 6. Clean temporary files
 rm -rf "$TMP"
 
 echo "Built: $OUT/$JAR_NAME"

Project-01/uap25-pro01-tram/resources/log4j2.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
+        </Console>
+    </Appenders>
+
+    <Loggers>
+        <Logger name="de.unitrier.st.uap.w25.tram" level="TRACE" additivity="false">
+            <AppenderRef ref="Console"/>
+        </Logger>
+        <Root level="TRACE">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>

Project-01/uap25-pro01-tram/src/de/unitrier/st/uap/w25/tram/AbstractMachine.java

@@ -29,10 +29,10 @@ public class AbstractMachine {
         while (!isHalted()) {
             executeStep();
         }
-        confStr();
     }
 
-    // Executes single step and returns configuration
+
+    // Executes a single step and returns configuration
     public void executeStep() {
         try {
             Instruction inst = this.prog.get(this.PC);
@@ -212,16 +212,8 @@ public class AbstractMachine {
 
     // Returns the machine's current configuration as string
     public String confStr() {
-        StringBuilder sb = new StringBuilder();
-
-        sb.append("TOP=").append(this.TOP)
-                .append("  PC=").append(this.PC)
-                .append("  PP=").append(this.PP)
-                .append("  FP=").append(this.FP)
-                .append("\nSTACK: ")
-                .append(stackStr());
-
-        return sb.toString();
+        String format = "TOP=%3d | PC=%3d | PP=%3d | FP=%3d | STACK=%s";
+        return String.format(format, this.TOP, this.PC, this.PP, this.FP, stackStr());
     }
 
     // Returns the machine's current stack as string

Project-01/uap25-pro01-tram/src/de/unitrier/st/uap/w25/tram/LoggedMachine.java

@@ -5,23 +5,28 @@ import org.apache.logging.log4j.Logger;
 
 public class LoggedMachine extends AbstractMachine {
     private static final Logger logger = LogManager.getLogger(LoggedMachine.class);
-    private int stepCounter = 0;
+    private int stepCounter = -1;
 
     public LoggedMachine(Instruction[] prog) { super(prog); }
     public LoggedMachine(Instruction[] prog, Integer[] stack) { super(prog, stack); }
 
     @Override
     public void execute() {
-        logger.info("Executing...");
-        logger.debug("0: {}", confStr());
-        while (!isHalted()) executeStep();
-        logger.info("Finished with STACK: {}", stackStr());
+        logger.trace(stepStr());
+        while (!isHalted()) {
+            executeStep();
+        }
     }
 
     @Override
     public void executeStep() {
-        int step = stepCounter++;
         super.executeStep();
-        logger.debug("{}: {}", step, confStr());
+        logger.trace(stepStr());
+    }
+
+    public String stepStr() {
+        int step = ++stepCounter;
+        String format = "Step %3d | TOP=%3d | PC=%3d | PP=%3d | FP=%3d | STACK=%s";
+        return String.format(format, step, this.TOP, this.PC, this.PP, this.FP, stackStr());
     }
 }

Project-01/uap25-pro01-tram/src/de/unitrier/st/uap/w25/tram/Main.java

@@ -1,6 +1,8 @@
 package de.unitrier.st.uap.w25.tram;
 
 import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.core.config.Configurator;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -8,6 +10,8 @@ import java.util.ArrayList;
 import java.util.List;
 
 public final class Main {
+    private static final Logger log = LogManager.getLogger(Main.class);
+
     private Main() {}
 
     static void main(String[] argv) {
@@ -29,7 +33,7 @@ public final class Main {
                     if (i + 1 < argv.length) {
                         stackArg = argv[++i];
                     } else {
-                        System.err.println("Error: missing stack argument after --stack");
+                        System.err.println("Missing stack argument after --stack");
                         System.exit(2);
                     }
                 }
@@ -43,26 +47,23 @@ public final class Main {
         // Verify .tram file
         Path tramFile = Path.of(tramPath);
         if (!Files.exists(tramFile)) {
-            System.err.println("Error: file not found -> " + tramPath);
+            System.err.println("File not found: " + tramPath);
             System.exit(4);
         }
 
-        // Configure console logging only
-        if (debug) {
-            Configurator.setRootLevel(Level.DEBUG);
-        } else {
-            Configurator.setRootLevel(Level.INFO);
-        }
-
         // Parse optional stack
         Integer[] stack = parseStack(stackArg);
 
-        // Load TRAM code and execute
+        // Load TRAM code
         Instruction[] code = Assembler.readTRAMCode(tramPath);
-        LoggedMachine tram = new LoggedMachine(code, stack);
-        tram.execute();
 
-        System.out.println("Execution complete.");
+        // Execute and print console output
+        Logger logger = LogManager.getLogger(Main.class);
+        AbstractMachine tram = debug ?  new LoggedMachine(code, stack) : new AbstractMachine(code, stack);
+        logger.trace("Start execution...");
+        tram.execute();
+        logger.trace("Finished execution.");
+        logger.trace("Final STACK: {}", tram.stackStr());
     }
 
     // Parse "[1,2,3]" or "1,2,3"