mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 13:45:27 +00:00
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; -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Startup Cache.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* The Mozilla Foundation <http://www.mozilla.org/>.
|
|
* Portions created by the Initial Developer are Copyright (C) 2009
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Benedict Hsieh <bhsieh@mozilla.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsStartupCacheUtils.h"
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsComponentManagerUtils.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsIStorageStream.h"
|
|
#include "nsIStringStream.h"
|
|
#include "nsIObjectInputStream.h"
|
|
#include "nsIObjectOutputStream.h"
|
|
|
|
nsresult
|
|
NS_NewObjectInputStreamFromBuffer(char* buffer, int len,
|
|
nsIObjectInputStream** stream)
|
|
{
|
|
nsCOMPtr<nsIStringInputStream> stringStream
|
|
= do_CreateInstance("@mozilla.org/io/string-input-stream;1");
|
|
if (!stringStream)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
nsCOMPtr<nsIObjectInputStream> objectInput
|
|
= do_CreateInstance("@mozilla.org/binaryinputstream;1");
|
|
if (!objectInput)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
stringStream->AdoptData(buffer, len);
|
|
objectInput->SetInputStream(stringStream);
|
|
|
|
NS_ADDREF(*stream = objectInput);
|
|
return NS_OK;
|
|
}
|
|
|
|
// This is questionable API name and design, but we can't
|
|
// retrieve the wrapped stream from the objectOutputStream later...
|
|
nsresult
|
|
NS_NewObjectOutputWrappedStorageStream(nsIObjectOutputStream **wrapperStream,
|
|
nsIStorageStream** stream)
|
|
{
|
|
nsCOMPtr<nsIStorageStream> storageStream;
|
|
nsresult rv = NS_NewStorageStream(256, (PRUint32)-1,
|
|
getter_AddRefs(storageStream));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIObjectOutputStream> objectOutput
|
|
= do_CreateInstance("@mozilla.org/binaryoutputstream;1");
|
|
if (!objectOutput)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream
|
|
= do_QueryInterface(storageStream);
|
|
|
|
objectOutput->SetOutputStream(outputStream);
|
|
NS_ADDREF(*wrapperStream = objectOutput);
|
|
NS_ADDREF(*stream = storageStream);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
NS_NewBufferFromStorageStream(nsIStorageStream *storageStream,
|
|
char** buffer, int* len)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIInputStream> inputStream;
|
|
rv = storageStream->NewInputStream(0, getter_AddRefs(inputStream));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PRUint32 avail, read;
|
|
rv = inputStream->Available(&avail);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
char* temp = new char[avail];
|
|
if (!temp)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
rv = inputStream->Read(temp, avail, &read);
|
|
if (NS_SUCCEEDED(rv) && avail != read)
|
|
rv = NS_ERROR_UNEXPECTED;
|
|
|
|
if (NS_FAILED(rv)) {
|
|
delete temp;
|
|
return rv;
|
|
}
|
|
|
|
*len = avail;
|
|
*buffer = temp;
|
|
return NS_OK;
|
|
}
|
|
|