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/*
* Copyright 2000-2014 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 org.jetbrains.jps.incremental.storage;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.IOUtil;
import gnu.trove.THashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
/**
* @author Eugene Zhuravlev
* Date: 10/11/12
*/
public class OneToManyPathsMapping extends AbstractStateStorage<String, Collection<String>> {
public OneToManyPathsMapping(File storePath) throws IOException {
super(storePath, new PathStringDescriptor(), new PathCollectionExternalizer());
}
@Override
public void update(@NotNull String keyPath, @NotNull Collection<String> boundPaths) throws IOException {
super.update(FileUtil.toSystemIndependentName(keyPath), normalizePaths(boundPaths));
}
public final void update(@NotNull String keyPath, @NotNull String boundPath) throws IOException {
super.update(FileUtil.toSystemIndependentName(keyPath), Collections.singleton(FileUtil.toSystemIndependentName(boundPath)));
}
public final void appendData(@NotNull String keyPath, @NotNull String boundPath) throws IOException {
super.appendData(FileUtil.toSystemIndependentName(keyPath), Collections.singleton(FileUtil.toSystemIndependentName(boundPath)));
}
@Override
public void appendData(@NotNull String keyPath, @NotNull Collection<String> boundPaths) throws IOException {
super.appendData(FileUtil.toSystemIndependentName(keyPath), normalizePaths(boundPaths));
}
@Nullable
@Override
public Collection<String> getState(@NotNull String keyPath) throws IOException {
return super.getState(FileUtil.toSystemIndependentName(keyPath));
}
@Override
public void remove(@NotNull String keyPath) throws IOException {
super.remove(FileUtil.toSystemIndependentName(keyPath));
}
public final void removeData(@NotNull String keyPath, @NotNull String boundPath) throws IOException {
final Collection<String> outputPaths = getState(FileUtil.toSystemIndependentName(keyPath));
if (outputPaths != null) {
final boolean removed = outputPaths.remove(FileUtil.toSystemIndependentName(boundPath));
if (outputPaths.isEmpty()) {
remove(keyPath);
}
else {
if (removed) {
update(keyPath, outputPaths);
}
}
}
}
private static class PathCollectionExternalizer implements DataExternalizer<Collection<String>> {
private final byte[] myBuffer = IOUtil.allocReadWriteUTFBuffer();
public void save(@NotNull DataOutput out, Collection<String> value) throws IOException {
for (String str : value) {
IOUtil.writeUTFFast(myBuffer, out, str);
}
}
public Collection<String> read(@NotNull DataInput in) throws IOException {
final Set<String> result = new THashSet<String>(FileUtil.PATH_HASHING_STRATEGY);
final DataInputStream stream = (DataInputStream)in;
while (stream.available() > 0) {
final String str = IOUtil.readUTFFast(myBuffer, stream);
result.add(str);
}
return result;
}
}
private static Collection<String> normalizePaths(Collection<String> outputs) {
Collection<String> normalized = new ArrayList<String>(outputs.size());
for (String out : outputs) {
normalized.add(FileUtil.toSystemIndependentName(out));
}
return normalized;
}
}
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