package fr.adrienbrault.idea.symfony2plugin.stubs.indexes;
import com.intellij.ide.highlighter.XmlFileType;
import com.intellij.psi.PsiFile;
import com.intellij.util.indexing.*;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.EnumeratorStringDescriptor;
import com.intellij.util.io.KeyDescriptor;
import fr.adrienbrault.idea.symfony2plugin.Symfony2ProjectComponent;
import fr.adrienbrault.idea.symfony2plugin.stubs.dict.FileResource;
import fr.adrienbrault.idea.symfony2plugin.stubs.indexes.externalizer.ObjectStreamDataExternalizer;
import fr.adrienbrault.idea.symfony2plugin.util.FileResourceVisitorUtil;
import gnu.trove.THashMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.yaml.YAMLFileType;
import java.util.Collections;
import java.util.Map;
/**
* @author Daniel Espendiller <daniel@espendiller.net>
*/
public class FileResourcesIndex extends FileBasedIndexExtension<String, FileResource> {
private static int MAX_FILE_BYTE_SIZE = 1048576;
private static ObjectStreamDataExternalizer<FileResource> EXTERNALIZER = new ObjectStreamDataExternalizer<>();
public static final ID<String, FileResource> KEY = ID.create("fr.adrienbrault.idea.symfony2plugin.file_resources");
private final KeyDescriptor<String> myKeyDescriptor = new EnumeratorStringDescriptor();
@NotNull
@Override
public ID<String, FileResource> getName() {
return KEY;
}
@NotNull
@Override
public DataIndexer<String, FileResource, FileContent> getIndexer() {
return inputData -> {
PsiFile psiFile = inputData.getPsiFile();
if(!Symfony2ProjectComponent.isEnabledForIndex(psiFile.getProject()) || !isValidForIndex(inputData, psiFile)) {
return Collections.emptyMap();
}
final Map<String, FileResource> items = new THashMap<>();
FileResourceVisitorUtil.visitFile(psiFile, consumer ->
items.put(consumer.getResource(), consumer.createFileResource())
);
return items;
};
}
@NotNull
@Override
public KeyDescriptor<String> getKeyDescriptor() {
return this.myKeyDescriptor;
}
@NotNull
@Override
public DataExternalizer<FileResource> getValueExternalizer() {
return EXTERNALIZER;
}
@NotNull
@Override
public FileBasedIndex.InputFilter getInputFilter() {
return virtualFile ->
virtualFile.getFileType() == XmlFileType.INSTANCE || virtualFile.getFileType() == YAMLFileType.YML;
}
@Override
public boolean dependsOnFileContent() {
return true;
}
@Override
public int getVersion() {
return 2;
}
public static boolean isValidForIndex(FileContent inputData, PsiFile psiFile) {
String fileName = psiFile.getName();
if(fileName.startsWith(".") || fileName.endsWith("Test")) {
return false;
}
String extension = inputData.getFile().getExtension();
if(extension == null || !(extension.equalsIgnoreCase("xml") || extension.equalsIgnoreCase("yml")|| extension.equalsIgnoreCase("yaml"))) {
return false;
}
if(inputData.getFile().getLength() > MAX_FILE_BYTE_SIZE) {
return false;
}
return true;
}
}