102 lines
2.3 KiB
C++
102 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "nsIAsyncInputStream.h"
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#include "nsIAsyncOutputStream.h"
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#include "nsIDocShell.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIPipe.h"
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#include "nsEmbedStream.h"
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#include "nsError.h"
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#include "nsString.h"
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NS_IMPL_ISUPPORTS0(nsEmbedStream)
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nsEmbedStream::nsEmbedStream()
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{
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mOwner = nullptr;
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}
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nsEmbedStream::~nsEmbedStream()
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{
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}
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void
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nsEmbedStream::InitOwner(nsIWebBrowser* aOwner)
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{
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mOwner = aOwner;
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}
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NS_METHOD
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nsEmbedStream::Init(void)
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{
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return NS_OK;
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}
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NS_METHOD
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nsEmbedStream::OpenStream(nsIURI* aBaseURI, const nsACString& aContentType)
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{
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nsresult rv;
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NS_ENSURE_ARG_POINTER(aBaseURI);
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NS_ENSURE_TRUE(IsASCII(aContentType), NS_ERROR_INVALID_ARG);
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// if we're already doing a stream, return an error
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if (mOutputStream) {
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return NS_ERROR_IN_PROGRESS;
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}
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nsCOMPtr<nsIAsyncInputStream> inputStream;
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nsCOMPtr<nsIAsyncOutputStream> outputStream;
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rv = NS_NewPipe2(getter_AddRefs(inputStream), getter_AddRefs(outputStream),
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true, false, 0, UINT32_MAX);
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mOwner);
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rv = docShell->LoadStream(inputStream, aBaseURI, aContentType,
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EmptyCString(), nullptr);
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if (NS_FAILED(rv)) {
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return rv;
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}
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mOutputStream = outputStream;
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return rv;
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}
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NS_METHOD
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nsEmbedStream::AppendToStream(const uint8_t* aData, uint32_t aLen)
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{
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nsresult rv;
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NS_ENSURE_STATE(mOutputStream);
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uint32_t bytesWritten = 0;
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rv = mOutputStream->Write(reinterpret_cast<const char*>(aData),
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aLen, &bytesWritten);
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if (NS_FAILED(rv)) {
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return rv;
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}
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NS_ASSERTION(bytesWritten == aLen,
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"underlying buffer couldn't handle the write");
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return rv;
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}
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NS_METHOD
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nsEmbedStream::CloseStream(void)
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{
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nsresult rv = NS_OK;
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// NS_ENSURE_STATE returns NS_ERROR_UNEXPECTED if the condition isn't
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// satisfied; this is exactly what we want to return.
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NS_ENSURE_STATE(mOutputStream);
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mOutputStream->Close();
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mOutputStream = 0;
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return rv;
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}
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