/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* 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 jetbrains.mps.reloading;
import jetbrains.mps.util.iterable.IterableEnumeration;
import jetbrains.mps.vfs.IFile;
import jetbrains.mps.vfs.impl.IoFileSystem;
import jetbrains.mps.vfs.path.UniPath;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
public abstract class RealClassPathItem extends AbstractClassPathItem {
private static Logger LOG = LogManager.getLogger(RealClassPathItem.class);
private static final jetbrains.mps.vfs.openapi.FileSystem FS = IoFileSystem.INSTANCE;
public abstract String getPath();
// relies on the fact that {@link #getResource(String)} returns unique resource for each name
@Override
public Enumeration<URL> getResources(String name) {
List<URL> result = new ArrayList<URL>();
URL resource = getResource(name);
if (resource != null) {
result.add(resource);
}
return new IterableEnumeration<URL>(result);
}
@NotNull
public static RealClassPathItem create(@NotNull String path, @Nullable String caller) {
IFile file = FS.getFile(path);
UniPath uniPath = file.toPath().toNormal();
if (!file.exists()) {
notifyNonExistentCP(caller, file, uniPath);
return new NonExistingClassPathItem(uniPath.toString());
} else if (file.isArchive()) {
return new JarFileClassPathItem(FS, uniPath.toString());
} else if (file.isDirectory()) {
return new FileClassPathItem(uniPath.toString());
} else if (file.isInArchive()) {
throw new IllegalArgumentException("Path variable `" + uniPath + "' points to the location inside the jar which is not supported");
} else {
throw new IllegalArgumentException("Path variable `" + uniPath + "' does not point to a directory or to a jar/zip location");
}
}
private static void notifyNonExistentCP(@Nullable String caller, IFile file, UniPath uniPath) {
String moduleString = caller == null ? "" : " in " + caller;
LOG.debug(String.format("Can't load class path item %s%s.%s", uniPath, moduleString, file.isDirectory() ? " Execute make in IDEA." : ""));
}
}