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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 "nsIAsyncInputStream.h"
#include "nsIAsyncOutputStream.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPipe.h"
#include "nsEmbedStream.h"
#include "nsError.h"
#include "nsString.h"
NS_IMPL_ISUPPORTS0(nsEmbedStream)
nsEmbedStream::nsEmbedStream()
{
mOwner = nullptr;
}
nsEmbedStream::~nsEmbedStream()
{
}
void
nsEmbedStream::InitOwner(nsIWebBrowser* aOwner)
{
mOwner = aOwner;
}
nsresult
nsEmbedStream::Init(void)
{
return NS_OK;
}
nsresult
nsEmbedStream::OpenStream(nsIURI* aBaseURI, const nsACString& aContentType)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(aBaseURI);
NS_ENSURE_TRUE(IsASCII(aContentType), NS_ERROR_INVALID_ARG);
// if we're already doing a stream, return an error
if (mOutputStream) {
return NS_ERROR_IN_PROGRESS;
}
nsCOMPtr<nsIAsyncInputStream> inputStream;
nsCOMPtr<nsIAsyncOutputStream> outputStream;
rv = NS_NewPipe2(getter_AddRefs(inputStream), getter_AddRefs(outputStream),
true, false, 0, UINT32_MAX);
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mOwner);
rv = docShell->LoadStream(inputStream, aBaseURI, aContentType,
EmptyCString(), nullptr);
if (NS_FAILED(rv)) {
return rv;
}
mOutputStream = outputStream;
return rv;
}
nsresult
nsEmbedStream::AppendToStream(const uint8_t* aData, uint32_t aLen)
{
nsresult rv;
NS_ENSURE_STATE(mOutputStream);
uint32_t bytesWritten = 0;
rv = mOutputStream->Write(reinterpret_cast<const char*>(aData),
aLen, &bytesWritten);
if (NS_FAILED(rv)) {
return rv;
}
NS_ASSERTION(bytesWritten == aLen,
"underlying buffer couldn't handle the write");
return rv;
}
nsresult
nsEmbedStream::CloseStream(void)
{
nsresult rv = NS_OK;
// NS_ENSURE_STATE returns NS_ERROR_UNEXPECTED if the condition isn't
// satisfied; this is exactly what we want to return.
NS_ENSURE_STATE(mOutputStream);
mOutputStream->Close();
mOutputStream = nullptr;
return rv;
}
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