// Copyright (c) 2009 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

package org.chromium.debug.core.efs;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.URI;

import org.eclipse.core.filesystem.IFileInfo;

import org.eclipse.core.filesystem.IFileStore;

import org.eclipse.core.filesystem.provider.FileStore;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.IProgressMonitor;

/**

 * A script file store. Delegates all operations to the ChromiumScriptStorage

 * instance.

 */

public class ChromiumScriptFileStore extends FileStore {

  /** The filesystem storage. */

  private static final ChromiumScriptStorage STORAGE = ChromiumScriptStorage.getInstance();

  /** The host filesystem of this resource. */

  private final ChromiumScriptFileSystem fileSystem;

  /** The resource path in the filesystem. */

  private final IPath path;

  /**

   * Constructs a proxy for a real resource (which might not exist).

   *

   * @param fileSystem that stores the resource

   * @param path of the resource

   */

  public ChromiumScriptFileStore(ChromiumScriptFileSystem fileSystem, IPath path) {

    this.fileSystem = fileSystem;

    this.path = path;

  }

  @Override

  public String[] childNames(int options, IProgressMonitor monitor) throws CoreException {

    return STORAGE.childNames(this.path);

  }

  @Override

  public IFileInfo fetchInfo(int options, IProgressMonitor monitor) throws CoreException {

    return STORAGE.fetchInfo(path, options);

  }

  @Override

  public IFileStore getChild(String name) {

    return fileSystem.getStore(path.append(name));

  }

  @Override

  public String getName() {

    if (path.isEmpty()) {

      return "ROOT"; //$NON-NLS-1$

    }

    return path.lastSegment();

  }

  @Override

  public IFileStore getParent() {

    if (path.segmentCount() == 0) {

      return null;

    }

    return new ChromiumScriptFileStore(fileSystem, path.removeLastSegments(1));

  }

  @Override

  public InputStream openInputStream(int options, IProgressMonitor monitor) throws CoreException {

    return STORAGE.openInputStream(path, options);

  }

  @Override

  public OutputStream openOutputStream(int options, IProgressMonitor monitor) throws CoreException {

    return STORAGE.openOutputStream(path, options);

  }

  @Override

  public IFileStore mkdir(int options, IProgressMonitor monitor) throws CoreException {

    STORAGE.mkdir(path, options);

    return this;

  }

  @Override

  public URI toURI() {

    return ChromiumScriptFileSystem.getFileStoreUri(path);

  }

  @Override

  public void delete(int options, IProgressMonitor monitor) throws CoreException {

    STORAGE.delete(path, options);

  }

  @Override

  public void putInfo(IFileInfo info, int options, IProgressMonitor monitor) throws CoreException {

    STORAGE.putInfo(path, info, options);

  }

}