////////////////////////////////////////////////////////////////////////////////

 // checkstyle: Checks Java source code for adherence to a set of rules.

 // Copyright (C) 2001-2014  Oliver Burn

 //

 // This library is free software; you can redistribute it and/or

 // modify it under the terms of the GNU Lesser General Public

 // License as published by the Free Software Foundation; either

 // version 2.1 of the License, or (at your option) any later version.

 //

 // This library 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

 // Lesser General Public License for more details.

 //

 // You should have received a copy of the GNU Lesser General Public

 // License along with this library; if not, write to the Free Software

 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 ////////////////////////////////////////////////////////////////////////////////

 package com.puppycrawl.tools.checkstyle.checks.whitespace;

 import com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck;

 import java.io.File;

 import java.util.List;

 /**

  * Checks to see if a file contains a tab character.

  * @author oliverb

  */

 public class FileTabCharacterCheck extends AbstractFileSetCheck

 {

     /** Indicates whether to report once per file, or for each line. */

     private boolean mEachLine;

     @Override

     protected void processFiltered(File aFile, List<String> aLines)

     {

         int lineNum = 0;

         for (final String line : aLines) {

             lineNum++;

             final int tabPosition = line.indexOf('\t');

             if (tabPosition != -1) {

                 if (mEachLine) {

                     log(lineNum, tabPosition + 1, "containsTab");

                 }

                 else {

                     log(lineNum, tabPosition + 1, "file.containsTab");

                     break;

                 }

             }

         }

     }

     /**

      * Whether report on each line containing a tab.

      * @param aEachLine Whether report on each line containing a tab.

      */

     public void setEachLine(boolean aEachLine)

     {

         mEachLine = aEachLine;

     }

 }