gecko-dev/dom/file/File.cpp

201 строка
5.3 KiB
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/* -*- 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 "File.h"
#include "FileBlobImpl.h"
#include "MemoryBlobImpl.h"
#include "MultipartBlobImpl.h"
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/FileBinding.h"
#include "mozilla/dom/FileCreatorHelper.h"
#include "mozilla/dom/FileSystemUtils.h"
#include "mozilla/dom/Promise.h"
#include "nsXULAppAPI.h"
namespace mozilla {
namespace dom {
File::File(nsISupports* aParent, BlobImpl* aImpl)
: Blob(aParent, aImpl)
{
MOZ_ASSERT(aImpl->IsFile());
}
File::~File()
{}
/* static */ File*
File::Create(nsISupports* aParent, BlobImpl* aImpl)
{
MOZ_ASSERT(aImpl);
MOZ_ASSERT(aImpl->IsFile());
return new File(aParent, aImpl);
}
/* static */ already_AddRefed<File>
File::Create(nsISupports* aParent, const nsAString& aName,
const nsAString& aContentType, uint64_t aLength,
int64_t aLastModifiedDate)
{
RefPtr<File> file = new File(aParent,
new BaseBlobImpl(aName, aContentType, aLength, aLastModifiedDate));
return file.forget();
}
/* static */ already_AddRefed<File>
File::CreateMemoryFile(nsISupports* aParent, void* aMemoryBuffer,
uint64_t aLength, const nsAString& aName,
const nsAString& aContentType,
int64_t aLastModifiedDate)
{
RefPtr<File> file = new File(aParent,
new MemoryBlobImpl(aMemoryBuffer, aLength, aName,
aContentType, aLastModifiedDate));
return file.forget();
}
/* static */ already_AddRefed<File>
File::CreateFromFile(nsISupports* aParent, nsIFile* aFile)
{
MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
RefPtr<File> file = new File(aParent, new FileBlobImpl(aFile));
return file.forget();
}
/* static */ already_AddRefed<File>
File::CreateFromFile(nsISupports* aParent, nsIFile* aFile,
const nsAString& aName, const nsAString& aContentType)
{
MOZ_DIAGNOSTIC_ASSERT(XRE_IsParentProcess());
RefPtr<File> file = new File(aParent,
new FileBlobImpl(aFile, aName, aContentType));
return file.forget();
}
JSObject*
File::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return FileBinding::Wrap(aCx, this, aGivenProto);
}
void
File::GetName(nsAString& aFileName) const
{
mImpl->GetName(aFileName);
}
void
File::GetRelativePath(nsAString& aPath) const
{
aPath.Truncate();
nsAutoString path;
mImpl->GetDOMPath(path);
// WebkitRelativePath doesn't start with '/'
if (!path.IsEmpty()) {
MOZ_ASSERT(path[0] == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR);
aPath.Assign(Substring(path, 1));
}
}
Date
File::GetLastModifiedDate(ErrorResult& aRv)
{
int64_t value = GetLastModified(aRv);
if (aRv.Failed()) {
return Date();
}
return Date(JS::TimeClip(value));
}
int64_t
File::GetLastModified(ErrorResult& aRv)
{
return mImpl->GetLastModified(aRv);
}
void
File::GetMozFullPath(nsAString& aFilename, SystemCallerGuarantee aGuarantee,
ErrorResult& aRv) const
{
mImpl->GetMozFullPath(aFilename, aGuarantee, aRv);
}
void
File::GetMozFullPathInternal(nsAString& aFileName, ErrorResult& aRv) const
{
mImpl->GetMozFullPathInternal(aFileName, aRv);
}
/* static */ already_AddRefed<File>
File::Constructor(const GlobalObject& aGlobal,
const Sequence<BlobPart>& aData,
const nsAString& aName,
const FilePropertyBag& aBag,
ErrorResult& aRv)
{
// Normalizing the filename
nsString name(aName);
name.ReplaceChar('/', ':');
RefPtr<MultipartBlobImpl> impl = new MultipartBlobImpl(name);
nsAutoString type(aBag.mType);
MakeValidBlobType(type);
impl->InitializeBlob(aData, type, false, aRv);
if (aRv.Failed()) {
return nullptr;
}
MOZ_ASSERT(impl->IsFile());
if (aBag.mLastModified.WasPassed()) {
impl->SetLastModified(aBag.mLastModified.Value());
}
RefPtr<File> file = new File(aGlobal.GetAsSupports(), impl);
return file.forget();
}
/* static */ already_AddRefed<Promise>
File::CreateFromNsIFile(const GlobalObject& aGlobal,
nsIFile* aData,
const ChromeFilePropertyBag& aBag,
SystemCallerGuarantee aGuarantee,
ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
RefPtr<Promise> promise =
FileCreatorHelper::CreateFile(global, aData, aBag, true, aRv);
return promise.forget();
}
/* static */ already_AddRefed<Promise>
File::CreateFromFileName(const GlobalObject& aGlobal,
const nsAString& aPath,
const ChromeFilePropertyBag& aBag,
SystemCallerGuarantee aGuarantee,
ErrorResult& aRv)
{
nsCOMPtr<nsIFile> file;
aRv = NS_NewLocalFile(aPath, false, getter_AddRefs(file));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
RefPtr<Promise> promise =
FileCreatorHelper::CreateFile(global, file, aBag, false, aRv);
return promise.forget();
}
} // namespace dom
} // namespace mozilla