/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.google.idea.blaze.java.sync.source;

import com.google.idea.blaze.base.model.primitives.WorkspacePath;
import com.google.idea.blaze.base.scope.BlazeContext;
import com.google.idea.blaze.base.sync.workspace.ArtifactLocationDecoder;
import com.google.idea.blaze.base.util.PackagePrefixCalculator;

/** Gets the package from a java file by its file path alone (i.e. without opening the file). */
public final class FilePathJavaPackageReader extends JavaPackageReader {
  @Override
  public String getDeclaredPackageOfJavaFile(
      BlazeContext context,
      ArtifactLocationDecoder artifactLocationDecoder,
      SourceArtifact sourceArtifact) {
    String directory = sourceArtifact.artifactLocation.getRelativePath();
    int i = directory.lastIndexOf('/');
    if (i >= 0) {
      directory = directory.substring(0, i);
    }
    return PackagePrefixCalculator.packagePrefixOf(new WorkspacePath(directory));
  }
}