Added command line option for log-level

cli/src/main/java/de/jplag/cli/CLI.java

@@ -12,6 +12,7 @@
 import de.jplag.JPlagResult;
 import de.jplag.cli.logger.CliProgressBarProvider;
 import de.jplag.cli.logger.CollectedLoggerFactory;
+import de.jplag.cli.logger.JPlagLoggerBase;
 import de.jplag.cli.picocli.CliInputHandler;
 import de.jplag.exceptions.ExitException;
 import de.jplag.logging.ProgressBarLogger;
@@ -50,6 +51,7 @@ public void executeCli() throws ExitException, IOException {
         logger.debug("Your version of JPlag is {}", JPlag.JPLAG_VERSION);
 
         if (!this.inputHandler.parse()) {
+            JPlagLoggerBase.setLogLevel(this.inputHandler.getCliOptions().advanced.logLevel);
             ProgressBarLogger.setProgressBarProvider(new CliProgressBarProvider());
 
             switch (this.inputHandler.getCliOptions().mode) {

cli/src/main/java/de/jplag/cli/logger/CliProgressBarProvider.java

@@ -1,5 +1,9 @@
 package de.jplag.cli.logger;
 
+import java.util.Set;
+
+import org.slf4j.event.Level;
+
 import de.jplag.logging.ProgressBar;
 import de.jplag.logging.ProgressBarProvider;
 import de.jplag.logging.ProgressBarType;
@@ -11,16 +15,22 @@
  * A ProgressBar provider, that used the tongfei progress bar library underneath, to show progress bars on the cli.
  */
 public class CliProgressBarProvider implements ProgressBarProvider {
+    private static final Set<Level> allowedLogLevels = Set.of(Level.INFO);
+
     @Override
     public ProgressBar initProgressBar(ProgressBarType type, int totalSteps) {
-        if (type.isIdleBar()) {
-            IdleBar idleBar = new IdleBar(type.getDefaultText());
-            idleBar.start();
-            return idleBar;
+        if (allowedLogLevels.contains(JPlagLoggerBase.getLogLevel())) {
+            if (type.isIdleBar()) {
+                IdleBar idleBar = new IdleBar(type.getDefaultText());
+                idleBar.start();
+                return idleBar;
+            } else {
+                me.tongfei.progressbar.ProgressBar progressBar = new ProgressBarBuilder().setTaskName(type.getDefaultText()).setInitialMax(totalSteps)
+                        .setStyle(ProgressBarStyle.ASCII).build();
+                return new TongfeiProgressBar(progressBar);
+            }
         } else {
-            me.tongfei.progressbar.ProgressBar progressBar = new ProgressBarBuilder().setTaskName(type.getDefaultText()).setInitialMax(totalSteps)
-                    .setStyle(ProgressBarStyle.ASCII).build();
-            return new TongfeiProgressBar(progressBar);
+            return new VoidProgressBar();
         }
     }
 }

cli/src/main/java/de/jplag/cli/logger/CollectedLogger.java

@@ -29,7 +29,7 @@ public class CollectedLogger extends JPlagLoggerBase {
     private final ConcurrentLinkedDeque<LogEntry> allErrors = new ConcurrentLinkedDeque<>();
 
     public CollectedLogger(String name) {
-        super(LOG_LEVEL_INFO, name);
+        super(name);
     }
 
     @Override

cli/src/main/java/de/jplag/cli/logger/JPlagLoggerBase.java

@@ -16,14 +16,20 @@ public abstract class JPlagLoggerBase extends AbstractLogger {
 
     private static final Level LOG_LEVEL_FOR_EXTERNAL_LIBRARIES = LOG_LEVEL_ERROR;
 
-    private final Level currentLogLevel;
+    private static Level currentLogLevel = LOG_LEVEL_INFO;
+
+    public static void setLogLevel(Level logLevel) {
+        currentLogLevel = logLevel;
+    }
+
+    public static Level getLogLevel() {
+        return currentLogLevel;
+    }
 
     /**
-     * @param currentLogLevel The current log level
      * @param name The name of the logger
      */
-    protected JPlagLoggerBase(Level currentLogLevel, String name) {
-        this.currentLogLevel = currentLogLevel;
+    protected JPlagLoggerBase(String name) {
         this.name = name;
     }
 
@@ -78,7 +84,7 @@ public boolean isErrorEnabled(Marker marker) {
     }
 
     private boolean isLogLevelEnabled(Level logLevel) {
-        return logLevel.toInt() >= (isJPlagLog() ? this.currentLogLevel.toInt() : LOG_LEVEL_FOR_EXTERNAL_LIBRARIES.toInt());
+        return logLevel.toInt() >= (isJPlagLog() ? currentLogLevel.toInt() : LOG_LEVEL_FOR_EXTERNAL_LIBRARIES.toInt());
     }
 
     private boolean isJPlagLog() {

cli/src/main/java/de/jplag/cli/logger/VoidProgressBar.java

@@ -0,0 +1,16 @@
+package de.jplag.cli.logger;
+
+import de.jplag.logging.ProgressBar;
+
+/**
+ * An empty {@link ProgressBar} implementation, used to hide the progress bar depending on the log level.
+ */
+public class VoidProgressBar implements ProgressBar {
+    @Override
+    public void step(int number) {
+    }
+
+    @Override
+    public void dispose() {
+    }
+}

cli/src/main/java/de/jplag/cli/options/CliOptions.java

@@ -2,6 +2,8 @@
 
 import java.io.File;
 
+import org.slf4j.event.Level;
+
 import de.jplag.Language;
 import de.jplag.clustering.ClusteringAlgorithm;
 import de.jplag.clustering.ClusteringOptions;
@@ -101,6 +103,9 @@ public static class Advanced {
 
         @Option(names = "--overwrite", description = "Existing result files will be overwritten.")
         public boolean overwrite = false;
+
+        @Option(names = "--log-level", description = "Set the log level for the cli.")
+        public Level logLevel = Level.INFO;
     }
 
     public static class Clustering {