001//////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code for adherence to a set of rules. 003// Copyright (C) 2001-2014 Oliver Burn 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018//////////////////////////////////////////////////////////////////////////////// 019package com.puppycrawl.tools.checkstyle.checks.whitespace; 020 021import com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck; 022import java.io.File; 023import java.util.List; 024 025/** 026 * Checks to see if a file contains a tab character. 027 * @author oliverb 028 */ 029public class FileTabCharacterCheck extends AbstractFileSetCheck 030{ 031 /** Indicates whether to report once per file, or for each line. */ 032 private boolean eachLine; 033 034 @Override 035 protected void processFiltered(File file, List<String> lines) 036 { 037 int lineNum = 0; 038 for (final String line : lines) { 039 lineNum++; 040 final int tabPosition = line.indexOf('\t'); 041 if (tabPosition != -1) { 042 if (eachLine) { 043 log(lineNum, tabPosition + 1, "containsTab"); 044 } 045 else { 046 log(lineNum, tabPosition + 1, "file.containsTab"); 047 break; 048 } 049 } 050 } 051 } 052 053 /** 054 * Whether report on each line containing a tab. 055 * @param eachLine Whether report on each line containing a tab. 056 */ 057 public void setEachLine(boolean eachLine) 058 { 059 this.eachLine = eachLine; 060 } 061}