| /* |
| * 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. |
| */ |
| |
| package freemarker.test.templatesuite.models; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.io.Writer; |
| import java.util.Map; |
| |
| import freemarker.template.TemplateTransformModel; |
| |
| /** |
| * A TemplateTransformModel that includes properties. These properties can be |
| * set at model construction time, or, for the purposes of this demonstration, |
| * can be passed in from a wrapper TemplateMethodModel. |
| */ |
| public class TransformModel1 implements TemplateTransformModel { |
| |
| private boolean m_bAmpersands = false; |
| private boolean m_bQuotes = false; |
| private boolean m_bTags = false; |
| private String m_aComment = ""; |
| |
| private static final int READER_BUFFER_SIZE = 4096; |
| |
| public Writer getWriter(final Writer out, |
| final Map args) { |
| final StringBuilder buf = new StringBuilder(); |
| return new Writer(out) { |
| @Override |
| public void write(char cbuf[], int off, int len) { |
| buf.append(cbuf, off, len); |
| } |
| |
| @Override |
| public void flush() { |
| } |
| |
| @Override |
| public void close() throws IOException { |
| StringReader sr = new StringReader(buf.toString()); |
| StringWriter sw = new StringWriter(); |
| transform(sr, sw); |
| out.write(sw.toString()); |
| } |
| }; |
| } |
| |
| |
| /** |
| * Indicates whether we escape ampersands. This property can be set either |
| * while the model is being constructed, or via a property passed in through |
| * a <code>TemplateMethodModel</code>. |
| */ |
| public void setAmpersands( boolean bAmpersands ) { |
| m_bAmpersands = bAmpersands; |
| } |
| |
| /** |
| * Indicates whether we escape quotes. This property can be set either |
| * while the model is being constructed, or via a property passed in through |
| * a <code>TemplateMethodModel</code>. |
| */ |
| public void setQuotes( boolean bQuotes ) { |
| m_bQuotes = bQuotes; |
| } |
| |
| /** |
| * Indicates whether we escape tags. This property can be set either |
| * while the model is being constructed, or via a property passed in through |
| * a <code>TemplateMethodModel</code>. |
| */ |
| public void setTags( boolean bTags ) { |
| m_bTags = bTags; |
| } |
| |
| /** |
| * Sets a comment for this transformation. This property can be set either |
| * while the model is being constructed, or via a property passed in through |
| * a <code>TemplateMethodModel</code>. |
| */ |
| public void setComment( String aComment ) { |
| m_aComment = aComment; |
| } |
| |
| /** |
| * Performs a transformation/filter on FreeMarker output. |
| * |
| * @param source the input to be transformed |
| * @param output the destination of the transformation |
| */ |
| public void transform(Reader source, Writer output) |
| throws IOException { |
| // Output the source, converting unsafe certain characters to their |
| // equivalent entities. |
| int n = 0; |
| boolean bCommentSent = false; |
| char[] aBuffer = new char[ READER_BUFFER_SIZE ]; |
| int i = source.read( aBuffer ); |
| while (i >= 0) { |
| for ( int j = 0; j < i; j++ ) { |
| char c = aBuffer[j]; |
| switch (c) { |
| case '&': |
| if ( m_bAmpersands ) { |
| output.write("&"); |
| } else { |
| output.write( c ); |
| } |
| break; |
| case '<': |
| if ( m_bTags ) { |
| output.write("<"); |
| } else { |
| output.write( c ); |
| } |
| break; |
| case '>': |
| if ( m_bTags ) { |
| output.write(">"); |
| } else { |
| output.write( c ); |
| } |
| break; |
| case '"': |
| if ( m_bQuotes ) { |
| output.write("""); |
| } else { |
| output.write( c ); |
| } |
| break; |
| case '\'': |
| if ( m_bQuotes ) { |
| output.write("'"); |
| } else { |
| output.write( c ); |
| } |
| break; |
| case '*': |
| if ( ! bCommentSent ) { |
| output.write( m_aComment ); |
| bCommentSent = true; |
| } else { |
| output.write( c ); |
| } |
| break; |
| default: |
| output.write(c); |
| } |
| n++; |
| } |
| i = source.read( aBuffer ); |
| } |
| } |
| } |