org.smallmind.scribe.pen.Cleanup Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
 * 
 * This file is part of the SmallMind Code Project.
 * 
 * The SmallMind Code Project is free software, you can redistribute
 * it and/or modify it under either, at your discretion...
 * 
 * 1) The terms of 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.
 * 
 * ...or...
 * 
 * 2) The terms of the Apache License, Version 2.0.
 * 
 * The SmallMind Code Project 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
 * General Public License or Apache License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * and the Apache License along with the SmallMind Code Project. If not, see
 *  or .
 * 
 * Additional permission under the GNU Affero GPL version 3 section 7
 * ------------------------------------------------------------------
 * If you modify this Program, or any covered work, by linking or
 * combining it with other code, such other code is not for that reason
 * alone subject to any of the requirements of the GNU Affero GPL
 * version 3.
 */
package org.smallmind.scribe.pen;

import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.smallmind.nutsnbolts.io.PathUtility;

public class Cleanup {

  private CleanupRule[] rules;
  private char separator;

  public Cleanup () {

  }

  public Cleanup (CleanupRule... rules) {

    this('-', rules);
  }

  public Cleanup (char separator, CleanupRule... rules) {

    this.separator = separator;
    this.rules = rules;
  }

  public char getSeparator () {

    return separator;
  }

  public void setSeparator (char separator) {

    this.separator = separator;
  }

  public void setRules (CleanupRule[] rules) {

    this.rules = rules;
  }

  public void vacuum (Path logPath)
    throws IOException, LoggerException {

    CleanupRule[] copyRules;
    Path parentPath;
    String logFileName;
    String prologue;
    String epilogue = null;
    int dotPos;

    copyRules = new CleanupRule[(rules == null) ? 0 : rules.length];
    for (int index = 0; index < copyRules.length; index++) {
      copyRules[index] = rules[index].copy();
    }

    logFileName = PathUtility.fileNameAsString(logPath);

    if ((dotPos = logFileName.lastIndexOf('.')) >= 0) {
      prologue = logFileName.substring(0, dotPos) + separator;
      epilogue = logFileName.substring(dotPos);
    } else {
      prologue = logFileName + separator;
    }

    try (DirectoryStream directoryStream = Files.newDirectoryStream(((parentPath = logPath.getParent()) == null) ? Paths.get("/") : parentPath)) {
      for (Path possiblePath : directoryStream) {
        if (Files.isRegularFile(possiblePath) && (!possiblePath.equals(logPath))) {

          String possibleFileName = PathUtility.fileNameAsString(possiblePath);

          if (possibleFileName.startsWith(prologue) && ((epilogue == null) || possibleFileName.endsWith(epilogue))) {
            for (CleanupRule rule : copyRules) {
              if (rule.willCleanup(possiblePath)) {
                Files.deleteIfExists(possiblePath);
                break;
              }
            }
          }
        }
      }

      for (CleanupRule rule : copyRules) {
        rule.finish();
      }
    }
  }
}