зеркало из https://github.com/mozilla/gecko-dev.git
721 строка
19 KiB
C++
721 строка
19 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDOMFile.h"
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#include "nsCExternalHandlerService.h"
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#include "nsContentCID.h"
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#include "nsContentUtils.h"
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#include "nsDOMClassInfoID.h"
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#include "nsError.h"
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#include "nsICharsetDetector.h"
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#include "nsICharsetConverterManager.h"
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#include "nsIClassInfo.h"
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#include "nsIConverterInputStream.h"
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#include "nsIDocument.h"
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#include "nsIFileStreams.h"
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#include "nsIInputStream.h"
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#include "nsIIPCSerializableInputStream.h"
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#include "nsIMIMEService.h"
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#include "nsIPlatformCharset.h"
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#include "nsISeekableStream.h"
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#include "nsIUnicharInputStream.h"
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#include "nsIUnicodeDecoder.h"
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#include "nsNetCID.h"
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#include "nsNetUtil.h"
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#include "nsIUUIDGenerator.h"
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#include "nsBlobProtocolHandler.h"
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#include "nsStringStream.h"
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#include "nsJSUtils.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Attributes.h"
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#include "plbase64.h"
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#include "prmem.h"
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#include "dombindings.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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// XXXkhuey the input stream that we pass out of a DOMFile
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// can outlive the actual DOMFile object. Thus, we must
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// ensure that the buffer underlying the stream we get
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// from NS_NewByteInputStream is held alive as long as the
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// stream is. We do that by passing back this class instead.
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class DataOwnerAdapter MOZ_FINAL : public nsIInputStream,
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public nsISeekableStream,
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public nsIIPCSerializableInputStream
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{
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typedef nsDOMMemoryFile::DataOwner DataOwner;
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public:
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static nsresult Create(DataOwner* aDataOwner,
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uint32_t aStart,
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uint32_t aLength,
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nsIInputStream** _retval);
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NS_DECL_ISUPPORTS
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// These are mandatory.
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NS_FORWARD_NSIINPUTSTREAM(mStream->)
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NS_FORWARD_NSISEEKABLESTREAM(mSeekableStream->)
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// This is optional. We use a conditional QI to keep it from being called
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// if the underlying stream doesn't support it.
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NS_FORWARD_NSIIPCSERIALIZABLEINPUTSTREAM(mSerializableInputStream->)
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private:
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DataOwnerAdapter(DataOwner* aDataOwner,
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nsIInputStream* aStream)
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: mDataOwner(aDataOwner), mStream(aStream),
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mSeekableStream(do_QueryInterface(aStream)),
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mSerializableInputStream(do_QueryInterface(aStream))
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{
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NS_ASSERTION(mSeekableStream, "Somebody gave us the wrong stream!");
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}
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nsRefPtr<DataOwner> mDataOwner;
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nsCOMPtr<nsIInputStream> mStream;
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nsCOMPtr<nsISeekableStream> mSeekableStream;
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nsCOMPtr<nsIIPCSerializableInputStream> mSerializableInputStream;
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};
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NS_IMPL_THREADSAFE_ADDREF(DataOwnerAdapter)
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NS_IMPL_THREADSAFE_RELEASE(DataOwnerAdapter)
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NS_INTERFACE_MAP_BEGIN(DataOwnerAdapter)
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NS_INTERFACE_MAP_ENTRY(nsIInputStream)
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NS_INTERFACE_MAP_ENTRY(nsISeekableStream)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIIPCSerializableInputStream,
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mSerializableInputStream)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInputStream)
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NS_INTERFACE_MAP_END
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nsresult DataOwnerAdapter::Create(DataOwner* aDataOwner,
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uint32_t aStart,
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uint32_t aLength,
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nsIInputStream** _retval)
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{
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nsresult rv;
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NS_ASSERTION(aDataOwner, "Uh ...");
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nsCOMPtr<nsIInputStream> stream;
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rv = NS_NewByteInputStream(getter_AddRefs(stream),
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static_cast<const char*>(aDataOwner->mData) +
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aStart,
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(int32_t)aLength,
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NS_ASSIGNMENT_DEPEND);
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NS_ENSURE_SUCCESS(rv, rv);
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NS_ADDREF(*_retval = new DataOwnerAdapter(aDataOwner, stream));
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////
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// nsDOMFileBase implementation
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NS_IMETHODIMP
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nsDOMFileBase::GetName(nsAString &aFileName)
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{
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NS_ASSERTION(mIsFile, "Should only be called on files");
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aFileName = mName;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetLastModifiedDate(JSContext* cx, JS::Value *aLastModifiedDate)
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{
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aLastModifiedDate->setNull();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetMozFullPath(nsAString &aFileName)
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{
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NS_ASSERTION(mIsFile, "Should only be called on files");
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// It is unsafe to call CallerHasUniversalXPConnect on a non-main thread. If
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// you hit the following assertion you need to figure out some other way to
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// determine privileges and call GetMozFullPathInternal.
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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if (nsContentUtils::CallerHasUniversalXPConnect()) {
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return GetMozFullPathInternal(aFileName);
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}
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aFileName.Truncate();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetMozFullPathInternal(nsAString &aFileName)
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{
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NS_ASSERTION(mIsFile, "Should only be called on files");
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aFileName.Truncate();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetSize(uint64_t *aSize)
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{
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*aSize = mLength;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetType(nsAString &aType)
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{
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aType = mContentType;
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return NS_OK;
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}
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// Makes sure that aStart and aEnd is less then or equal to aSize and greater
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// than 0
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static void
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ParseSize(int64_t aSize, int64_t& aStart, int64_t& aEnd)
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{
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CheckedInt64 newStartOffset = aStart;
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if (aStart < -aSize) {
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newStartOffset = 0;
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}
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else if (aStart < 0) {
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newStartOffset += aSize;
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}
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else if (aStart > aSize) {
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newStartOffset = aSize;
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}
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CheckedInt64 newEndOffset = aEnd;
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if (aEnd < -aSize) {
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newEndOffset = 0;
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}
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else if (aEnd < 0) {
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newEndOffset += aSize;
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}
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else if (aEnd > aSize) {
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newEndOffset = aSize;
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}
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if (!newStartOffset.isValid() || !newEndOffset.isValid() ||
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newStartOffset.value() >= newEndOffset.value()) {
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aStart = aEnd = 0;
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}
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else {
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aStart = newStartOffset.value();
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aEnd = newEndOffset.value();
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}
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}
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NS_IMETHODIMP
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nsDOMFileBase::Slice(int64_t aStart, int64_t aEnd,
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const nsAString& aContentType, uint8_t optional_argc,
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nsIDOMBlob **aBlob)
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{
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*aBlob = nullptr;
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// Truncate aStart and aEnd so that we stay within this file.
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uint64_t thisLength;
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nsresult rv = GetSize(&thisLength);
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NS_ENSURE_SUCCESS(rv, rv);
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if (optional_argc < 2) {
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aEnd = (int64_t)thisLength;
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}
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ParseSize((int64_t)thisLength, aStart, aEnd);
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// Create the new file
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*aBlob = CreateSlice((uint64_t)aStart, (uint64_t)(aEnd - aStart),
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aContentType).get();
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return *aBlob ? NS_OK : NS_ERROR_UNEXPECTED;
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}
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NS_IMETHODIMP
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nsDOMFileBase::MozSlice(int64_t aStart, int64_t aEnd,
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const nsAString& aContentType,
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JSContext* aCx,
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uint8_t optional_argc,
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nsIDOMBlob **aBlob)
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsIScriptGlobalObject* sgo = nsJSUtils::GetDynamicScriptGlobal(aCx);
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if (sgo) {
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nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(sgo);
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if (window) {
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nsCOMPtr<nsIDocument> document =
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do_QueryInterface(window->GetExtantDocument());
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if (document) {
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document->WarnOnceAbout(nsIDocument::eMozSlice);
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}
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}
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}
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return Slice(aStart, aEnd, aContentType, optional_argc, aBlob);
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetInternalStream(nsIInputStream **aStream)
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{
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// Must be overridden
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NS_NOTREACHED("Must override GetInternalStream");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetInternalUrl(nsIPrincipal* aPrincipal, nsAString& aURL)
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{
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NS_ENSURE_STATE(aPrincipal);
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nsresult rv;
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nsCOMPtr<nsIUUIDGenerator> uuidgen =
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do_GetService("@mozilla.org/uuid-generator;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsID id;
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rv = uuidgen->GenerateUUIDInPlace(&id);
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NS_ENSURE_SUCCESS(rv, rv);
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char chars[NSID_LENGTH];
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id.ToProvidedString(chars);
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nsCString url = NS_LITERAL_CSTRING(BLOBURI_SCHEME ":") +
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Substring(chars + 1, chars + NSID_LENGTH - 2);
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nsBlobProtocolHandler::AddFileDataEntry(url, this,
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aPrincipal);
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CopyASCIItoUTF16(url, aURL);
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return NS_OK;
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}
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NS_IMETHODIMP_(int64_t)
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nsDOMFileBase::GetFileId()
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{
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int64_t id = -1;
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if (IsStoredFile() && IsWholeFile() && !IsSnapshot()) {
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if (!indexedDB::IndexedDatabaseManager::IsClosed()) {
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indexedDB::IndexedDatabaseManager::FileMutex().Lock();
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}
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NS_ASSERTION(!mFileInfos.IsEmpty(),
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"A stored file must have at least one file info!");
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nsRefPtr<indexedDB::FileInfo>& fileInfo = mFileInfos.ElementAt(0);
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if (fileInfo) {
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id = fileInfo->Id();
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}
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if (!indexedDB::IndexedDatabaseManager::IsClosed()) {
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indexedDB::IndexedDatabaseManager::FileMutex().Unlock();
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}
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}
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return id;
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}
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NS_IMETHODIMP_(void)
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nsDOMFileBase::AddFileInfo(indexedDB::FileInfo* aFileInfo)
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{
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if (indexedDB::IndexedDatabaseManager::IsClosed()) {
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NS_ERROR("Shouldn't be called after shutdown!");
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return;
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}
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nsRefPtr<indexedDB::FileInfo> fileInfo = aFileInfo;
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MutexAutoLock lock(indexedDB::IndexedDatabaseManager::FileMutex());
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NS_ASSERTION(!mFileInfos.Contains(aFileInfo),
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"Adding the same file info agan?!");
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nsRefPtr<indexedDB::FileInfo>* element = mFileInfos.AppendElement();
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element->swap(fileInfo);
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}
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NS_IMETHODIMP_(indexedDB::FileInfo*)
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nsDOMFileBase::GetFileInfo(indexedDB::FileManager* aFileManager)
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{
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if (indexedDB::IndexedDatabaseManager::IsClosed()) {
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NS_ERROR("Shouldn't be called after shutdown!");
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return nullptr;
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}
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// A slice created from a stored file must keep the file info alive.
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// However, we don't support sharing of slices yet, so the slice must be
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// copied again. That's why we have to ignore the first file info.
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// Snapshots are handled in a similar way (they have to be copied).
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uint32_t startIndex;
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if (IsStoredFile() && (!IsWholeFile() || IsSnapshot())) {
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startIndex = 1;
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}
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else {
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startIndex = 0;
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}
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MutexAutoLock lock(indexedDB::IndexedDatabaseManager::FileMutex());
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for (uint32_t i = startIndex; i < mFileInfos.Length(); i++) {
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nsRefPtr<indexedDB::FileInfo>& fileInfo = mFileInfos.ElementAt(i);
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if (fileInfo->Manager() == aFileManager) {
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return fileInfo;
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}
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}
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return nullptr;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetSendInfo(nsIInputStream** aBody,
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nsACString& aContentType,
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nsACString& aCharset)
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{
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nsresult rv;
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nsCOMPtr<nsIInputStream> stream;
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rv = this->GetInternalStream(getter_AddRefs(stream));
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NS_ENSURE_SUCCESS(rv, rv);
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nsString contentType;
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rv = this->GetType(contentType);
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NS_ENSURE_SUCCESS(rv, rv);
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CopyUTF16toUTF8(contentType, aContentType);
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aCharset.Truncate();
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stream.forget(aBody);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::GetMutable(bool* aMutable)
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{
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*aMutable = !mImmutable;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileBase::SetMutable(bool aMutable)
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{
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nsresult rv = NS_OK;
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NS_ENSURE_ARG(!mImmutable || !aMutable);
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if (!mImmutable && !aMutable) {
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// Force the content type and size to be cached
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nsString dummyString;
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rv = this->GetType(dummyString);
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NS_ENSURE_SUCCESS(rv, rv);
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uint64_t dummyInt;
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rv = this->GetSize(&dummyInt);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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mImmutable = !aMutable;
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return rv;
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}
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////////////////////////////////////////////////////////////////////////////
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// nsDOMFile implementation
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DOMCI_DATA(File, nsDOMFile)
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DOMCI_DATA(Blob, nsDOMFile)
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NS_INTERFACE_MAP_BEGIN(nsDOMFile)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMFile)
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NS_INTERFACE_MAP_ENTRY(nsIDOMBlob)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIDOMFile, mIsFile)
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NS_INTERFACE_MAP_ENTRY(nsIXHRSendable)
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NS_INTERFACE_MAP_ENTRY(nsIMutable)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(File, mIsFile)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(Blob, !mIsFile)
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NS_INTERFACE_MAP_END
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// Threadsafe when GetMutable() == false
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NS_IMPL_THREADSAFE_ADDREF(nsDOMFile)
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NS_IMPL_THREADSAFE_RELEASE(nsDOMFile)
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////////////////////////////////////////////////////////////////////////////
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// nsDOMFileCC implementation
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NS_IMPL_CYCLE_COLLECTION_0(nsDOMFileCC)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMFileCC)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMFile)
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NS_INTERFACE_MAP_ENTRY(nsIDOMBlob)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIDOMFile, mIsFile)
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NS_INTERFACE_MAP_ENTRY(nsIXHRSendable)
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NS_INTERFACE_MAP_ENTRY(nsIMutable)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(File, mIsFile)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(Blob, !mIsFile)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMFileCC)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMFileCC)
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////////////////////////////////////////////////////////////////////////////
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// nsDOMFileFile implementation
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NS_IMPL_ISUPPORTS_INHERITED1(nsDOMFileFile, nsDOMFile,
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nsIJSNativeInitializer)
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already_AddRefed<nsIDOMBlob>
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nsDOMFileFile::CreateSlice(uint64_t aStart, uint64_t aLength,
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const nsAString& aContentType)
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{
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nsCOMPtr<nsIDOMBlob> t = new nsDOMFileFile(this, aStart, aLength, aContentType);
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return t.forget();
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}
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/* static */ nsresult
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nsDOMFileFile::NewFile(nsISupports* *aNewObject)
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{
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nsCOMPtr<nsISupports> file = do_QueryObject(new nsDOMFileFile());
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file.forget(aNewObject);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileFile::GetMozFullPathInternal(nsAString &aFilename)
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{
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NS_ASSERTION(mIsFile, "Should only be called on files");
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return mFile->GetPath(aFilename);
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}
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NS_IMETHODIMP
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nsDOMFileFile::GetLastModifiedDate(JSContext* cx, JS::Value *aLastModifiedDate)
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{
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PRTime msecs;
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mFile->GetLastModifiedTime(&msecs);
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JSObject* date = JS_NewDateObjectMsec(cx, msecs);
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if (date) {
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aLastModifiedDate->setObject(*date);
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}
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else {
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aLastModifiedDate->setNull();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMFileFile::GetSize(uint64_t *aFileSize)
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{
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if (IsSizeUnknown()) {
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NS_ASSERTION(mWholeFile,
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"Should only use lazy size when using the whole file");
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int64_t fileSize;
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nsresult rv = mFile->GetFileSize(&fileSize);
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NS_ENSURE_SUCCESS(rv, rv);
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if (fileSize < 0) {
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return NS_ERROR_FAILURE;
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}
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|
|
|
mLength = fileSize;
|
|
}
|
|
|
|
*aFileSize = mLength;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMFileFile::GetType(nsAString &aType)
|
|
{
|
|
if (mContentType.IsVoid()) {
|
|
NS_ASSERTION(mWholeFile,
|
|
"Should only use lazy ContentType when using the whole file");
|
|
nsresult rv;
|
|
nsCOMPtr<nsIMIMEService> mimeService =
|
|
do_GetService(NS_MIMESERVICE_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCAutoString mimeType;
|
|
rv = mimeService->GetTypeFromFile(mFile, mimeType);
|
|
if (NS_FAILED(rv)) {
|
|
mimeType.Truncate();
|
|
}
|
|
|
|
AppendUTF8toUTF16(mimeType, mContentType);
|
|
mContentType.SetIsVoid(false);
|
|
}
|
|
|
|
aType = mContentType;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
const uint32_t sFileStreamFlags =
|
|
nsIFileInputStream::CLOSE_ON_EOF |
|
|
nsIFileInputStream::REOPEN_ON_REWIND |
|
|
nsIFileInputStream::DEFER_OPEN;
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMFileFile::GetInternalStream(nsIInputStream **aStream)
|
|
{
|
|
return mWholeFile ?
|
|
NS_NewLocalFileInputStream(aStream, mFile, -1, -1, sFileStreamFlags) :
|
|
NS_NewPartialLocalFileInputStream(aStream, mFile, mStart, mLength,
|
|
-1, -1, sFileStreamFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMFileFile::Initialize(nsISupports* aOwner,
|
|
JSContext* aCx,
|
|
JSObject* aObj,
|
|
uint32_t aArgc,
|
|
JS::Value* aArgv)
|
|
{
|
|
nsresult rv;
|
|
|
|
NS_ASSERTION(!mImmutable, "Something went wrong ...");
|
|
NS_ENSURE_TRUE(!mImmutable, NS_ERROR_UNEXPECTED);
|
|
|
|
if (!nsContentUtils::IsCallerChrome()) {
|
|
return NS_ERROR_DOM_SECURITY_ERR; // Real short trip
|
|
}
|
|
|
|
NS_ENSURE_TRUE(aArgc > 0, NS_ERROR_UNEXPECTED);
|
|
|
|
// We expect to get a path to represent as a File object,
|
|
// or an nsIFile
|
|
nsCOMPtr<nsIFile> file;
|
|
if (!aArgv[0].isString()) {
|
|
// Lets see if it's an nsIFile
|
|
if (!aArgv[0].isObject()) {
|
|
return NS_ERROR_UNEXPECTED; // We're not interested
|
|
}
|
|
|
|
JSObject* obj = &aArgv[0].toObject();
|
|
|
|
// Is it an nsIFile
|
|
file = do_QueryInterface(
|
|
nsContentUtils::XPConnect()->
|
|
GetNativeOfWrapper(aCx, obj));
|
|
if (!file)
|
|
return NS_ERROR_UNEXPECTED;
|
|
} else {
|
|
// It's a string
|
|
JSString* str = JS_ValueToString(aCx, aArgv[0]);
|
|
NS_ENSURE_TRUE(str, NS_ERROR_XPC_BAD_CONVERT_JS);
|
|
|
|
nsDependentJSString xpcomStr;
|
|
if (!xpcomStr.init(aCx, str)) {
|
|
return NS_ERROR_XPC_BAD_CONVERT_JS;
|
|
}
|
|
|
|
rv = NS_NewLocalFile(xpcomStr, false, getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
NS_ENSURE_TRUE(exists, NS_ERROR_FILE_NOT_FOUND);
|
|
|
|
bool isDir;
|
|
rv = file->IsDirectory(&isDir);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
NS_ENSURE_FALSE(isDir, NS_ERROR_FILE_IS_DIRECTORY);
|
|
|
|
mFile = file;
|
|
file->GetLeafName(mName);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// nsDOMMemoryFile implementation
|
|
|
|
already_AddRefed<nsIDOMBlob>
|
|
nsDOMMemoryFile::CreateSlice(uint64_t aStart, uint64_t aLength,
|
|
const nsAString& aContentType)
|
|
{
|
|
nsCOMPtr<nsIDOMBlob> t =
|
|
new nsDOMMemoryFile(this, aStart, aLength, aContentType);
|
|
return t.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMMemoryFile::GetInternalStream(nsIInputStream **aStream)
|
|
{
|
|
if (mLength > PR_INT32_MAX)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return DataOwnerAdapter::Create(mDataOwner, mStart, mLength, aStream);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// nsDOMFileList implementation
|
|
|
|
DOMCI_DATA(FileList, nsDOMFileList)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(nsDOMFileList)
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMFileList)
|
|
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMFileList)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMFileList)
|
|
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(FileList)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMFileList)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMFileList)
|
|
|
|
JSObject*
|
|
nsDOMFileList::WrapObject(JSContext *cx, JSObject *scope,
|
|
bool *triedToWrap)
|
|
{
|
|
return mozilla::dom::oldproxybindings::FileList::create(cx, scope, this, triedToWrap);
|
|
}
|
|
|
|
nsIDOMFile*
|
|
nsDOMFileList::GetItemAt(uint32_t aIndex)
|
|
{
|
|
return mFiles.SafeObjectAt(aIndex);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMFileList::GetLength(uint32_t* aLength)
|
|
{
|
|
*aLength = mFiles.Count();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDOMFileList::Item(uint32_t aIndex, nsIDOMFile **aFile)
|
|
{
|
|
NS_IF_ADDREF(*aFile = nsDOMFileList::GetItemAt(aIndex));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// nsDOMFileInternalUrlHolder implementation
|
|
|
|
nsDOMFileInternalUrlHolder::nsDOMFileInternalUrlHolder(nsIDOMBlob* aFile,
|
|
nsIPrincipal* aPrincipal
|
|
MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL) {
|
|
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
|
|
aFile->GetInternalUrl(aPrincipal, mUrl);
|
|
}
|
|
|
|
nsDOMFileInternalUrlHolder::~nsDOMFileInternalUrlHolder() {
|
|
if (!mUrl.IsEmpty()) {
|
|
nsCAutoString narrowUrl;
|
|
CopyUTF16toUTF8(mUrl, narrowUrl);
|
|
nsBlobProtocolHandler::RemoveFileDataEntry(narrowUrl);
|
|
}
|
|
}
|