Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/C/Firefox/dom/filesystem/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 5 kB

Quelle Directory.cpp Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/Directory.h"

#include "GetDirectoryListingTask.h"
#include "GetFilesTask.h"

#include "nsIFile.h"
#include "nsString.h"
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/dom/DirectoryBinding.h"
#include "mozilla/dom/FileSystemBase.h"
#include "mozilla/dom/FileSystemUtils.h"
#include "mozilla/dom/OSFileSystem.h"
#include "mozilla/dom/WorkerPrivate.h"

namespace mozilla::dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Directory)

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Directory)
  if (tmp->mFileSystem) {
    tmp->mFileSystem->Unlink();
    tmp->mFileSystem = nullptr;
  }
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Directory)
  if (tmp->mFileSystem) {
    tmp->mFileSystem->Traverse(cb);
  }
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTING_ADDREF(Directory)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Directory)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Directory)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

/* static */
already_AddRefed<Directory> Directory::Constructor(const GlobalObject& aGlobal,
                                                   const nsAString& aRealPath,
                                                   ErrorResult& aRv) {
  nsCOMPtr<nsIFile> path;
  aRv = NS_NewLocalFile(aRealPath, getter_AddRefs(path));
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
  if (NS_WARN_IF(!global)) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  return Create(global, path);
}

/* static */
already_AddRefed<Directory> Directory::Create(nsIGlobalObject* aGlobal,
                                              nsIFile* aFile,
                                              FileSystemBase* aFileSystem) {
  MOZ_ASSERT(aGlobal);
  MOZ_ASSERT(aFile);

  RefPtr<Directory> directory = new Directory(aGlobal, aFile, aFileSystem);
  return directory.forget();
}

Directory::Directory(nsIGlobalObject* aGlobal, nsIFile* aFile,
                     FileSystemBase* aFileSystem)
    : mGlobal(aGlobal), mFile(aFile) {
  MOZ_ASSERT(aFile);

  // aFileSystem can be null. In this case we create a OSFileSystem when needed.
  if (aFileSystem) {
    // More likely, this is a OSFileSystem. This object keeps a reference of
    // mGlobal but it's not cycle collectable and to avoid manual
    // addref/release, it's better to have 1 object per directory. For this
    // reason we clone it here.
    mFileSystem = aFileSystem->Clone();
  }
}

Directory::~Directory() = default;

nsIGlobalObject* Directory::GetParentObject() const { return mGlobal; }

JSObject* Directory::WrapObject(JSContext* aCx,
                                JS::Handle<JSObject*> aGivenProto) {
  return Directory_Binding::Wrap(aCx, this, aGivenProto);
}

void Directory::GetName(nsAString& aRetval, ErrorResult& aRv) {
  aRetval.Truncate();

  RefPtr<FileSystemBase> fs = GetFileSystem(aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return;
  }

  fs->GetDirectoryName(mFile, aRetval, aRv);
}

void Directory::GetPath(nsAString& aRetval, ErrorResult& aRv) {
  // This operation is expensive. Better to cache the result.
  if (mPath.IsEmpty()) {
    RefPtr<FileSystemBase> fs = GetFileSystem(aRv);
    if (NS_WARN_IF(aRv.Failed())) {
      return;
    }

    fs->GetDOMPath(mFile, mPath, aRv);
    if (NS_WARN_IF(aRv.Failed())) {
      return;
    }
  }

  aRetval = mPath;
}

nsresult Directory::GetFullRealPath(nsAString& aPath) {
  nsresult rv = mFile->GetPath(aPath);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  return NS_OK;
}

already_AddRefed<Promise> Directory::GetFilesAndDirectories(ErrorResult& aRv) {
  RefPtr<FileSystemBase> fs = GetFileSystem(aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  RefPtr<GetDirectoryListingTaskChild> task =
      GetDirectoryListingTaskChild::Create(fs, this, mFile, mFilters, aRv);
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  task->Start();

  return task->GetPromise();
}

already_AddRefed<Promise> Directory::GetFiles(bool aRecursiveFlag,
                                              ErrorResult& aRv) {
  ErrorResult rv;
  RefPtr<FileSystemBase> fs = GetFileSystem(rv);
  if (NS_WARN_IF(rv.Failed())) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }

  RefPtr<GetFilesTaskChild> task =
      GetFilesTaskChild::Create(fs, this, mFile, aRecursiveFlag, rv);
  if (NS_WARN_IF(rv.Failed())) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return nullptr;
  }

  task->Start();

  return task->GetPromise();
}

void Directory::SetContentFilters(const nsAString& aFilters) {
  mFilters = aFilters;
}

FileSystemBase* Directory::GetFileSystem(ErrorResult& aRv) {
  if (!mFileSystem) {
    nsAutoString path;
    aRv = mFile->GetPath(path);
    if (NS_WARN_IF(aRv.Failed())) {
      return nullptr;
    }

    RefPtr<OSFileSystem> fs = new OSFileSystem(path);
    fs->Init(mGlobal);

    mFileSystem = fs;
  }

  return mFileSystem;
}

}  // namespace mozilla::dom

quality100%

¤ Dauer der Verarbeitung: 0.2 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.