/* Licensed 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 org.riotfamily.common.web.performance;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import org.springframework.util.FileCopyUtils;
import com.yahoo.platform.yui.compressor.CssCompressor;
/**
* @author Felix Gnass [fgnass at neteye dot de]
* @since 6.5
*/
public class YUICssCompressor implements Compressor {
private int linebreak = -1;
private boolean enabled = true;
/**
* Enables the Compressor. Per default the compressor is enabled.
* @param enabled true to enabled, false to disable this compressor
*/
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
/**
* Sets the column number after which a line break should be inserted.
* Default is <code>-1</code>, which means that no breaks will be added.
*/
public void setLinebreak(int linebreak) {
this.linebreak = linebreak;
}
/**
* Reads a cascading style sheet (CSS) from the given Reader and writes
* the compressed version to the specified Writer.
*/
public void compress(Reader in, Writer out) throws IOException {
if (enabled) {
CssCompressor compressor = new CssCompressor(in);
compressor.compress(out, linebreak);
}
else {
FileCopyUtils.copy(in, out);
}
}
}