1 files changed, 141 insertions, 0 deletions
diff --git a/elki/src/main/java/de/lmu/ifi/dbs/elki/workflow/LoggingStep.java b/elki/src/main/java/de/lmu/ifi/dbs/elki/workflow/LoggingStep.java
new file mode 100644
index 00000000..167f8c8b
--- /dev/null
+++ b/elki/src/main/java/de/lmu/ifi/dbs/elki/workflow/LoggingStep.java
@@ -0,0 +1,141 @@
+package de.lmu.ifi.dbs.elki.workflow;
+
+/*
+ This file is part of ELKI:
+ Environment for Developing KDD-Applications Supported by Index-Structures
+
+ Copyright (C) 2015
+ Ludwig-Maximilians-Universität München
+ Lehr- und Forschungseinheit für Datenbanksysteme
+ ELKI Development Team
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import de.lmu.ifi.dbs.elki.application.AbstractApplication;
+import de.lmu.ifi.dbs.elki.logging.Logging;
+import de.lmu.ifi.dbs.elki.logging.Logging.Level;
+import de.lmu.ifi.dbs.elki.logging.LoggingConfiguration;
+import de.lmu.ifi.dbs.elki.utilities.exceptions.AbortException;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizer;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.WrongParameterValueException;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Flag;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.StringParameter;
+
+/**
+ * Pseudo-step to configure logging / verbose mode.
+ * 
+ * @author Erich Schubert
+ * 
+ * @apiviz.uses LoggingConfiguration
+ */
+public class LoggingStep implements WorkflowStep {
+  /**
+   * Logger
+   */
+  private static final Logging LOG = Logging.getLogger(LoggingStep.class);
+
+  /**
+   * Constructor.
+   * 
+   * @param verbose Verbose flag
+   * @param levels Level settings array
+   */
+  public LoggingStep(int verbose, String[][] levels) {
+    super();
+    if (verbose <= 0) {
+      LoggingConfiguration.setVerbose(Level.WARNING);
+    } else if (verbose == 1) {
+      LoggingConfiguration.setVerbose(Level.VERBOSE);
+    } else if (verbose > 1) {
+      // Extra verbosity - do not call with "false" to not undo!
+      LoggingConfiguration.setVerbose(Level.VERYVERBOSE);
+    }
+    if (levels != null) {
+      for (String[] pair : levels) {
+        try {
+          if (pair.length == 1) {
+            // Try to parse as level:
+            try {
+              java.util.logging.Level level = Level.parse(pair[0]);
+              LoggingConfiguration.setDefaultLevel(level);
+            } catch (IllegalArgumentException e) {
+              LoggingConfiguration.setLevelFor(pair[0], Level.FINEST.getName());
+            }
+          } else if (pair.length == 2) {
+            LoggingConfiguration.setLevelFor(pair[0], pair[1]);
+          } else {
+            throw new AbortException("Invalid logging settings");
+          }
+        } catch (IllegalArgumentException e) {
+          LOG.warning("Invalid logging statement for package " + pair[0] + ": " + e.getMessage());
+        }
+      }
+    }
+  }
+
+  /**
+   * Parameterization class.
+   * 
+   * @author Erich Schubert
+   * 
+   * @apiviz.exclude
+   */
+  public static class Parameterizer extends AbstractParameterizer {
+    /**
+     * Verbose mode.
+     */
+    protected int verbose = 0;
+
+    /**
+     * Enable logging levels manually
+     */
+    protected String[][] levels = null;
+
+    @Override
+    protected void makeOptions(Parameterization config) {
+      super.makeOptions(config);
+      final Flag verboseF = new Flag(AbstractApplication.Parameterizer.VERBOSE_ID);
+      if (config.grab(verboseF) && verboseF.isTrue()) {
+        verbose++;
+        final Flag verbose2F = new Flag(AbstractApplication.Parameterizer.VERBOSE_ID);
+        if (config.grab(verbose2F) && verbose2F.isTrue()) {
+          verbose++;
+        }
+      }
+      final StringParameter debugP = new StringParameter(AbstractApplication.Parameterizer.DEBUG_ID);
+      debugP.setOptional(true);
+      if (config.grab(debugP)) {
+        String[] opts = debugP.getValue().split(",");
+        levels = new String[opts.length][];
+        int i = 0;
+        for (String opt : opts) {
+          String[] chunks = opt.split("=");
+          if (chunks.length != 1 && chunks.length != 2) {
+            config.reportError(new WrongParameterValueException(debugP, debugP.getValue(), "Invalid debug option."));
+            break;
+          }
+          levels[i] = chunks;
+          i++;
+        }
+      }
+    }
+
+    @Override
+    protected LoggingStep makeInstance() {
+      return new LoggingStep(verbose, levels);
+    }
+  }
+}