/*
* 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.ide.scratch;
import com.intellij.lang.Language;
import com.intellij.lang.LanguageUtil;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.PathUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.IOException;
/**
* @author gregsh
*/
public class ScratchUtil {
private ScratchUtil() {
}
/**
* Returns true if a file is in one of scratch roots: scratch, console, etc.
* @see RootType
* @see ScratchFileService
*/
public static boolean isScratch(@Nullable VirtualFile file) {
return file != null && file.getFileType() == ScratchFileType.INSTANCE;
}
public static void updateFileExtension(@NotNull Project project, @Nullable VirtualFile file) throws IOException {
ApplicationManager.getApplication().assertWriteAccessAllowed();
if (CommandProcessor.getInstance().getCurrentCommand() == null) {
throw new AssertionError("command required");
}
if (file == null) return;
Language language = LanguageUtil.getLanguageForPsi(project, file);
FileType expected = getFileTypeFromName(file);
FileType actual = language == null ? null : language.getAssociatedFileType();
if (expected == actual || actual == null) return;
String ext = actual.getDefaultExtension();
if (StringUtil.isEmpty(ext)) return;
String newName = PathUtil.makeFileName(file.getNameWithoutExtension(), ext);
VirtualFile parent = file.getParent();
newName = parent != null && parent.findChild(newName) != null ? PathUtil.makeFileName(file.getName(), ext) : newName;
file.rename(ScratchUtil.class, newName);
}
public static boolean hasMatchingExtension(@NotNull Project project, @NotNull VirtualFile file) {
FileType expected = getFileTypeFromName(file);
Language language = LanguageUtil.getLanguageForPsi(project, file);
FileType actual = language == null ? null : language.getAssociatedFileType();
return expected == actual && actual != null;
}
@Nullable
public static FileType getFileTypeFromName(@NotNull VirtualFile file) {
String extension = file.getExtension();
return extension == null ? null : FileTypeManager.getInstance().getFileTypeByExtension(extension);
}
}