Files
SCM-Manager/scm-webapp/src/main/java/sonia/scm/plugin/PathWebResourceLoader.java
2018-09-10 13:44:42 +02:00

100 lines
3.0 KiB
Java

/**
* Copyright (c) 2014, Sebastian Sdorra All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer. 2. Redistributions in
* binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution. 3. Neither the name of SCM-Manager;
* nor the names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm.plugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
/**
* Load web resources from a plugin webapp directory.
*
* @author Sebastian Sdorra
* @since 2.0.0
*/
public class PathWebResourceLoader implements WebResourceLoader
{
private static final String SEPARATOR = "/";
/**
* the logger for PathWebResourceLoader
*/
private static final Logger LOG =
LoggerFactory.getLogger(PathWebResourceLoader.class);
public PathWebResourceLoader(Path directory)
{
this.directory = directory;
}
@Override
public URL getResource(String path) {
URL resource = null;
Path file = directory.resolve(filePath(path));
if (Files.exists(file) && ! Files.isDirectory(file))
{
LOG.trace("found path {} at {}", path, file);
try
{
resource = file.toUri().toURL();
}
catch (MalformedURLException ex)
{
LOG.error("could not transform path to url", ex);
}
} else {
LOG.trace("could not find file {}", file);
}
return resource;
}
private String filePath(String path) {
if (path.startsWith(SEPARATOR)) {
return path.substring(1);
}
return path;
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private final Path directory;
}