/*
* Copyright 2003-2015 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 jetbrains.mps.jps.make.fileUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.util.Arrays;
import static com.intellij.openapi.util.io.FileUtil.toSystemDependentName;
public class FileFinder {
private final String[] myDirsToScan;
public FileFinder(String... dirsToScan) {
myDirsToScan = dirsToScan;
}
@Nullable
public File find(String filePath) {
File locFile = null;
for (String dir : myDirsToScan) {
locFile = findFileUnder(dir, filePath);
if (locFile != null) break;
}
return locFile;
}
@NotNull
public File checkedFind(String filePath) {
File locFile = find(filePath);
if (locFile == null) {
throw new IllegalArgumentException("Cannot find file '" + filePath + "' under '" + Arrays.toString(myDirsToScan) + "' directories");
}
return locFile;
}
@Nullable
private static File findFileUnder(String baseDir, String relativePath) {
File file = new File(baseDir, toSystemDependentName(relativePath));
if (file.exists()) {
return file;
}
return null;
}
}