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/*
* Copyright 2000-2013 Vaadin Ltd.
*
* 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 com.vaadin.sass.internal.resolver;
import java.io.File;
import java.io.InputStream;
import org.w3c.css.sac.InputSource;
public class ClassloaderResolver implements ScssStylesheetResolver {
@Override
public InputSource resolve(String identifier) {
// identifier should not have .scss, fileName should
String ext = ".scss";
if (identifier.endsWith(".css")) {
ext = ".css";
}
String fileName = identifier;
if (identifier.endsWith(ext)) {
identifier = identifier.substring(0,
identifier.length() - ext.length());
} else {
fileName = fileName + ext;
}
// Ensure only "/" is used, also in Windows
fileName = fileName.replace(File.separatorChar, '/');
// Filename should be a relative path starting with VAADIN/...
int vaadinIdx = fileName.lastIndexOf("VAADIN/");
if (vaadinIdx > -1) {
fileName = fileName.substring(vaadinIdx);
}
// Can the classloader find it?
InputStream is = getClass().getClassLoader().getResourceAsStream(
fileName);
if (is != null) {
InputSource source = new InputSource();
source.setByteStream(is);
source.setURI(fileName);
return source;
} else {
return null;
}
}
}
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