insert HTML block dynamically : HTML Output « Servlets « Java
insert HTML block dynamically
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
/**
* Various string manipulation methods that are more efficient then chaining
* string operations: all is done in the same buffer without creating a bunch of
* string objects.
*
* @author <a href="mailto:dev@labs.apache.org">Dungeon Project</a>
*/
public class Main {
/**
* This method is used to insert HTML block dynamically
*
* @param source
* the HTML code to be processes
* @param replaceNl
* if true '\n' will be replaced by <br>
* @param replaceTag
* if true '<' will be replaced by < and '>' will be replaced
* by >
* @param replaceQuote
* if true '\"' will be replaced by "
* @return the formated html block
*/
public static final String formatHtml( String source, boolean replaceNl, boolean replaceTag,
boolean replaceQuote )
{
StringBuffer buf = new StringBuffer();
int len = source.length();
for ( int ii = 0; ii < len; ii++ )
{
char ch = source.charAt( ii );
switch ( ch )
{
case '\"':
if ( replaceQuote )
{
buf.append( """ );
}
else
{
buf.append( ch );
}
break;
case '<':
if ( replaceTag )
{
buf.append( "<" );
}
else
{
buf.append( ch );
}
break;
case '>':
if ( replaceTag )
{
buf.append( ">" );
}
else
{
buf.append( ch );
}
break;
case '\n':
if ( replaceNl )
{
if ( replaceTag )
{
buf.append( "<br>" );
}
else
{
buf.append( "<br>" );
}
}
else
{
buf.append( ch );
}
break;
case '\r':
break;
case '&':
buf.append( "&" );
break;
default:
buf.append( ch );
break;
}
}
return buf.toString();
}
}
