gecko-dev/dom/file/BaseBlobImpl.cpp

159 строки
3.3 KiB
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/BaseBlobImpl.h"
#include "nsRFPService.h"
#include "prtime.h"
namespace mozilla {
namespace dom {
void
BaseBlobImpl::GetName(nsAString& aName) const
{
MOZ_ASSERT(mIsFile, "Should only be called on files");
aName = mName;
}
void
BaseBlobImpl::GetDOMPath(nsAString& aPath) const
{
MOZ_ASSERT(mIsFile, "Should only be called on files");
aPath = mPath;
}
void
BaseBlobImpl::SetDOMPath(const nsAString& aPath)
{
MOZ_ASSERT(mIsFile, "Should only be called on files");
mPath = aPath;
}
void
BaseBlobImpl::GetMozFullPath(nsAString& aFileName,
SystemCallerGuarantee /* unused */,
ErrorResult& aRv) const
{
MOZ_ASSERT(mIsFile, "Should only be called on files");
GetMozFullPathInternal(aFileName, aRv);
}
void
BaseBlobImpl::GetMozFullPathInternal(nsAString& aFileName, ErrorResult& aRv) const
{
if (!mIsFile) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
aFileName.Truncate();
}
void
BaseBlobImpl::GetType(nsAString& aType)
{
aType = mContentType;
}
int64_t
BaseBlobImpl::GetLastModified(ErrorResult& aRv)
{
MOZ_ASSERT(mIsFile, "Should only be called on files");
if (IsDateUnknown()) {
mLastModificationDate = nsRFPService::ReduceTimePrecisionAsUSecs(PR_Now(), 0);
// mLastModificationDate is an absolute timestamp so we supply a zero context mix-in
}
return mLastModificationDate / PR_USEC_PER_MSEC;
}
void
BaseBlobImpl::SetLastModified(int64_t aLastModified)
{
mLastModificationDate = aLastModified * PR_USEC_PER_MSEC;
}
int64_t
BaseBlobImpl::GetFileId()
{
return -1;
}
nsresult
BaseBlobImpl::GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
nsACString& aContentType, nsACString& aCharset)
{
MOZ_ASSERT(aContentLength);
ErrorResult rv;
nsCOMPtr<nsIInputStream> stream;
CreateInputStream(getter_AddRefs(stream), rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
*aContentLength = GetSize(rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
nsAutoString contentType;
GetType(contentType);
if (contentType.IsEmpty()) {
aContentType.SetIsVoid(true);
} else {
CopyUTF16toUTF8(contentType, aContentType);
}
aCharset.Truncate();
stream.forget(aBody);
return NS_OK;
}
nsresult
BaseBlobImpl::GetMutable(bool* aMutable) const
{
*aMutable = !mImmutable;
return NS_OK;
}
nsresult
BaseBlobImpl::SetMutable(bool aMutable)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG(!mImmutable || !aMutable);
if (!mImmutable && !aMutable) {
// Force the content type and size to be cached
nsAutoString dummyString;
GetType(dummyString);
ErrorResult error;
GetSize(error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
}
mImmutable = !aMutable;
return rv;
}
/* static */ uint64_t
BaseBlobImpl::NextSerialNumber()
{
static Atomic<uint64_t> nextSerialNumber;
return nextSerialNumber++;
}
} // namespace dom
} // namespace mozilla