/*
* Copyright 2000-2015 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 com.intellij.openapi.fileTypes.impl;
import com.intellij.openapi.fileTypes.ExactFileNameMatcher;
import com.intellij.openapi.fileTypes.ExtensionFileNameMatcher;
import com.intellij.openapi.fileTypes.FileNameMatcher;
import com.intellij.openapi.fileTypes.FileNameMatcherEx;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.io.FileUtilRt;
import com.intellij.util.ArrayUtil;
import com.intellij.util.text.CharSequenceHashingStrategy;
import gnu.trove.THashMap;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.*;
/**
* @author max
*/
public class FileTypeAssocTable<T> {
private final Map<CharSequence, T> myExtensionMappings;
private final Map<CharSequence, T> myExactFileNameMappings;
private final Map<CharSequence, T> myExactFileNameAnyCaseMappings;
private final List<Pair<FileNameMatcher, T>> myMatchingMappings;
private FileTypeAssocTable(@NotNull Map<CharSequence, T> extensionMappings,
@NotNull Map<CharSequence, T> exactFileNameMappings,
@NotNull Map<CharSequence, T> exactFileNameAnyCaseMappings,
@NotNull List<Pair<FileNameMatcher, T>> matchingMappings) {
myExtensionMappings = new THashMap<>(Math.max(10, extensionMappings.size()), 0.5f, CharSequenceHashingStrategy.CASE_INSENSITIVE);
myExtensionMappings.putAll(extensionMappings);
myExactFileNameMappings = new THashMap<>(Math.max(10, exactFileNameMappings.size()), 0.5f, CharSequenceHashingStrategy.CASE_SENSITIVE);
myExactFileNameMappings.putAll(exactFileNameMappings);
myExactFileNameAnyCaseMappings = new THashMap<>(Math.max(10, exactFileNameAnyCaseMappings.size()), 0.5f, CharSequenceHashingStrategy.CASE_INSENSITIVE);
myExactFileNameAnyCaseMappings.putAll(exactFileNameAnyCaseMappings);
myMatchingMappings = new ArrayList<>(matchingMappings);
}
public FileTypeAssocTable() {
this(Collections.emptyMap(), Collections.emptyMap(), Collections.emptyMap(), Collections.emptyList());
}
boolean isAssociatedWith(@NotNull T type, @NotNull FileNameMatcher matcher) {
if (matcher instanceof ExtensionFileNameMatcher || matcher instanceof ExactFileNameMatcher) {
return findAssociatedFileType(matcher) == type;
}
for (Pair<FileNameMatcher, T> mapping : myMatchingMappings) {
if (matcher.equals(mapping.getFirst()) && type == mapping.getSecond()) return true;
}
return false;
}
public void addAssociation(@NotNull FileNameMatcher matcher, @NotNull T type) {
if (matcher instanceof ExtensionFileNameMatcher) {
myExtensionMappings.put(((ExtensionFileNameMatcher)matcher).getExtension(), type);
}
else if (matcher instanceof ExactFileNameMatcher) {
final ExactFileNameMatcher exactFileNameMatcher = (ExactFileNameMatcher)matcher;
Map<CharSequence, T> mapToUse = exactFileNameMatcher.isIgnoreCase() ? myExactFileNameAnyCaseMappings : myExactFileNameMappings;
mapToUse.put(exactFileNameMatcher.getFileName(), type);
}
else {
myMatchingMappings.add(Pair.create(matcher, type));
}
}
boolean removeAssociation(@NotNull FileNameMatcher matcher, @NotNull T type) {
if (matcher instanceof ExtensionFileNameMatcher) {
String extension = ((ExtensionFileNameMatcher)matcher).getExtension();
if (myExtensionMappings.get(extension) == type) {
myExtensionMappings.remove(extension);
return true;
}
return false;
}
if (matcher instanceof ExactFileNameMatcher) {
final ExactFileNameMatcher exactFileNameMatcher = (ExactFileNameMatcher)matcher;
String fileName = exactFileNameMatcher.getFileName();
final Map<CharSequence, T> mapToUse = exactFileNameMatcher.isIgnoreCase() ? myExactFileNameAnyCaseMappings : myExactFileNameMappings;
if(mapToUse.get(fileName) == type) {
mapToUse.remove(fileName);
return true;
}
return false;
}
List<Pair<FileNameMatcher, T>> copy = new ArrayList<>(myMatchingMappings);
for (Pair<FileNameMatcher, T> assoc : copy) {
if (matcher.equals(assoc.getFirst())) {
myMatchingMappings.remove(assoc);
return true;
}
}
return false;
}
boolean removeAllAssociations(@NotNull T type) {
boolean changed = removeAssociationsFromMap(myExtensionMappings, type, false);
changed = removeAssociationsFromMap(myExactFileNameAnyCaseMappings, type, changed);
changed = removeAssociationsFromMap(myExactFileNameMappings, type, changed);
List<Pair<FileNameMatcher, T>> copy = new ArrayList<>(myMatchingMappings);
for (Pair<FileNameMatcher, T> assoc : copy) {
if (assoc.getSecond() == type) {
myMatchingMappings.remove(assoc);
changed = true;
}
}
return changed;
}
private boolean removeAssociationsFromMap(@NotNull Map<CharSequence, T> extensionMappings, @NotNull T type, boolean changed) {
Set<CharSequence> exts = extensionMappings.keySet();
CharSequence[] extsStrings = exts.toArray(new CharSequence[exts.size()]);
for (CharSequence s : extsStrings) {
if (extensionMappings.get(s) == type) {
extensionMappings.remove(s);
changed = true;
}
}
return changed;
}
@Nullable
public T findAssociatedFileType(@NotNull @NonNls CharSequence fileName) {
if (!myExactFileNameMappings.isEmpty()) {
T t = myExactFileNameMappings.get(fileName);
if (t != null) return t;
}
if (!myExactFileNameAnyCaseMappings.isEmpty()) { // even hash lookup with case insensitive hasher is costly for isIgnored checks during compile
T t = myExactFileNameAnyCaseMappings.get(fileName);
if (t != null) return t;
}
//noinspection ForLoopReplaceableByForEach
for (int i = 0; i < myMatchingMappings.size(); i++) {
final Pair<FileNameMatcher, T> mapping = myMatchingMappings.get(i);
if (FileNameMatcherEx.acceptsCharSequence(mapping.getFirst(), fileName)) return mapping.getSecond();
}
return myExtensionMappings.get(FileUtilRt.getExtension(fileName));
}
@Nullable
T findAssociatedFileType(@NotNull FileNameMatcher matcher) {
if (matcher instanceof ExtensionFileNameMatcher) {
return myExtensionMappings.get(((ExtensionFileNameMatcher)matcher).getExtension());
}
if (matcher instanceof ExactFileNameMatcher) {
final ExactFileNameMatcher exactFileNameMatcher = (ExactFileNameMatcher)matcher;
Map<CharSequence, T> mapToUse = exactFileNameMatcher.isIgnoreCase() ? myExactFileNameAnyCaseMappings : myExactFileNameMappings;
return mapToUse.get(exactFileNameMatcher.getFileName());
}
for (Pair<FileNameMatcher, T> mapping : myMatchingMappings) {
if (matcher.equals(mapping.getFirst())) return mapping.getSecond();
}
return null;
}
@Deprecated
@NotNull
public String[] getAssociatedExtensions(@NotNull T type) {
List<String> exts = new ArrayList<>();
for (Map.Entry<CharSequence, T> entry : myExtensionMappings.entrySet()) {
if (entry.getValue() == type) {
exts.add(entry.getKey().toString());
}
}
return ArrayUtil.toStringArray(exts);
}
@NotNull
public FileTypeAssocTable<T> copy() {
return new FileTypeAssocTable<>(myExtensionMappings, myExactFileNameMappings, myExactFileNameAnyCaseMappings, myMatchingMappings);
}
@NotNull
public List<FileNameMatcher> getAssociations(@NotNull T type) {
List<FileNameMatcher> result = new ArrayList<>();
for (Pair<FileNameMatcher, T> mapping : myMatchingMappings) {
if (mapping.getSecond() == type) {
result.add(mapping.getFirst());
}
}
for (Map.Entry<CharSequence, T> entries : myExactFileNameMappings.entrySet()) {
if (entries.getValue() == type) {
result.add(new ExactFileNameMatcher(entries.getKey().toString()));
}
}
for (Map.Entry<CharSequence, T> entries : myExactFileNameAnyCaseMappings.entrySet()) {
if (entries.getValue() == type) {
result.add(new ExactFileNameMatcher(entries.getKey().toString(), true));
}
}
for (Map.Entry<CharSequence, T> entries : myExtensionMappings.entrySet()) {
if (entries.getValue() == type) {
result.add(new ExtensionFileNameMatcher(entries.getKey().toString()));
}
}
return result;
}
boolean hasAssociationsFor(@NotNull T fileType) {
if (myExtensionMappings.values().contains(fileType) ||
myExactFileNameMappings.values().contains(fileType) ||
myExactFileNameAnyCaseMappings.values().contains(fileType)) {
return true;
}
for (Pair<FileNameMatcher, T> mapping : myMatchingMappings) {
if (mapping.getSecond() == fileType) {
return true;
}
}
return false;
}
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
FileTypeAssocTable<?> that = (FileTypeAssocTable)o;
return myExtensionMappings.equals(that.myExtensionMappings) &&
myMatchingMappings.equals(that.myMatchingMappings) &&
myExactFileNameMappings.equals(that.myExactFileNameMappings) &&
myExactFileNameAnyCaseMappings.equals(that.myExactFileNameAnyCaseMappings);
}
public int hashCode() {
int result = myExtensionMappings.hashCode();
result = 31 * result + myMatchingMappings.hashCode();
result = 31 * result + myExactFileNameMappings.hashCode();
result = 31 * result + myExactFileNameAnyCaseMappings.hashCode();
return result;
}
}