mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
125 lines
4.2 KiB
C++
125 lines
4.2 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 Startup Cache.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation <http://www.mozilla.org/>.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Benedict Hsieh <bhsieh@mozilla.com>
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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 "nsStartupCacheUtils.h"
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#include "nsCOMPtr.h"
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#include "nsComponentManagerUtils.h"
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#include "nsIInputStream.h"
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#include "nsIStorageStream.h"
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#include "nsIStringStream.h"
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#include "nsIObjectInputStream.h"
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#include "nsIObjectOutputStream.h"
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nsresult
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NS_NewObjectInputStreamFromBuffer(char* buffer, int len,
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nsIObjectInputStream** stream)
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{
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nsCOMPtr<nsIStringInputStream> stringStream
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= do_CreateInstance("@mozilla.org/io/string-input-stream;1");
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if (!stringStream)
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return NS_ERROR_OUT_OF_MEMORY;
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nsCOMPtr<nsIObjectInputStream> objectInput
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= do_CreateInstance("@mozilla.org/binaryinputstream;1");
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if (!objectInput)
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return NS_ERROR_OUT_OF_MEMORY;
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stringStream->AdoptData(buffer, len);
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objectInput->SetInputStream(stringStream);
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NS_ADDREF(*stream = objectInput);
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return NS_OK;
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}
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// This is questionable API name and design, but we can't
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// retrieve the wrapped stream from the objectOutputStream later...
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nsresult
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NS_NewObjectOutputWrappedStorageStream(nsIObjectOutputStream **wrapperStream,
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nsIStorageStream** stream)
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{
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nsCOMPtr<nsIStorageStream> storageStream;
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nsresult rv = NS_NewStorageStream(256, (PRUint32)-1,
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getter_AddRefs(storageStream));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIObjectOutputStream> objectOutput
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= do_CreateInstance("@mozilla.org/binaryoutputstream;1");
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if (!objectOutput)
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return NS_ERROR_OUT_OF_MEMORY;
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nsCOMPtr<nsIOutputStream> outputStream
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= do_QueryInterface(storageStream);
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objectOutput->SetOutputStream(outputStream);
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NS_ADDREF(*wrapperStream = objectOutput);
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NS_ADDREF(*stream = storageStream);
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return NS_OK;
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}
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nsresult
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NS_NewBufferFromStorageStream(nsIStorageStream *storageStream,
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char** buffer, int* len)
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{
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nsresult rv;
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nsCOMPtr<nsIInputStream> inputStream;
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rv = storageStream->NewInputStream(0, getter_AddRefs(inputStream));
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NS_ENSURE_SUCCESS(rv, rv);
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PRUint32 avail, read;
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rv = inputStream->Available(&avail);
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NS_ENSURE_SUCCESS(rv, rv);
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char* temp = new char[avail];
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if (!temp)
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return NS_ERROR_OUT_OF_MEMORY;
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rv = inputStream->Read(temp, avail, &read);
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if (NS_SUCCEEDED(rv) && avail != read)
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rv = NS_ERROR_UNEXPECTED;
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if (NS_FAILED(rv)) {
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delete temp;
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return rv;
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}
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*len = avail;
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*buffer = temp;
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return NS_OK;
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}
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