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The source code/** * HTMLUtils.java * CoolServlets.com * February 2, 2000 * Version 1.0 * * Copyright (C) 2000 CoolServlets.com * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Library General Public License as published by * the Free Software Foundation; either version 2 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 Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package com.coolservlets.util; public class HTMLUtils { /** * This method takes a string which may contain HTML tags (ie, <b>, , * etc) and converts the '<' and '>' characters to their HTML escape * sequences. * * @param input The text to be converted. * @return The input string with the characters '<' and '>' replaced with < and > respectively. */ public static String escapeHTMLTags( String input ) { // Check if the string is null or zero length -- if so, return what was sent in. if( input == null || input.length() == 0 ) { return input; } // Use a StringBuffer in lieu of String concatenation -- it is much more efficient this way. StringBuffer buf = new StringBuffer(); char ch = ' '; for( int i=0; i<input.length(); i++ ) { ch = input.charAt(i); if( ch == '<' ) { buf.append( "<" ); } else if( ch == '>' ) { buf.append( ">" ); } else { buf.append( ch ); } } return buf.toString(); } }
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Copyright 1998-2021 Alvin Alexander, alvinalexander.com
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