зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
3.8 KiB
C++
130 строки
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Christopher Blizzard.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Christopher Blizzard <blizzard@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIAsyncInputStream.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 "nsNetError.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 = nsnull;
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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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nsCOMPtr<nsIAsyncInputStream> inputStream;
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nsCOMPtr<nsIAsyncOutputStream> outputStream;
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rv = NS_NewPipe2(getter_AddRefs(inputStream),
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getter_AddRefs(outputStream),
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PR_TRUE, PR_FALSE, 0, PR_UINT32_MAX);
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if (NS_FAILED(rv))
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return rv;
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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(), nsnull);
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if (NS_FAILED(rv))
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return rv;
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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 PRUint8 *aData, PRUint32 aLen)
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{
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nsresult rv;
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NS_ENSURE_STATE(mOutputStream);
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PRUint32 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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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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