com.google.javascript.jscomp.ResourceLoader Maven / Gradle / Ivy
/*
* Copyright 2015 The Closure Compiler Authors.
*
* 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.google.javascript.jscomp;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.io.CharStreams;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* Utility class that handles resource loading.
*
*/
@GwtIncompatible("getResource, java.io.InputStreamReader")
public final class ResourceLoader {
public static String loadTextResource(Class clazz, String path) {
try {
return CharStreams.toString(new InputStreamReader(clazz.getResourceAsStream(path), UTF_8));
} catch (NullPointerException e) {
if (!resourceExists(clazz, path)) {
throw new RuntimeException("No such resource: " + path);
}
throw e;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static boolean resourceExists(Class clazz, String path) {
return clazz.getResource(path) != null;
}
public static String[] resourceList(Class clazz) {
throw new UnsupportedOperationException("resourceList only available in GWT code");
}
}