transport/sqlite/src/aaDBXMLtoXMLConverter.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent tw=79 ft=cpp: */
   3 /*
   4  * Copyright (C) 2010 Sergey Yanovich <ynvich@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include "aaDBXMLtoXMLConverter.h"
  23
  24 #include "nsIChannel.h"
  25 #include "nsILoadGroup.h"
  26
  27 #include "nsStringAPI.h"
  28 #include "nsMimeTypes.h"
  29
  30 NS_IMPL_ISUPPORTS3(aaDBXMLtoXMLConverter,
  31     nsIStreamConverter,
  32     nsIStreamListener,
  33     nsIRequestObserver)
  34
  35 aaDBXMLtoXMLConverter::aaDBXMLtoXMLConverter()
  36   : mListener(nsnull)
  37 {
  38 }
  39
  40 aaDBXMLtoXMLConverter::~aaDBXMLtoXMLConverter()
  41 {
  42 }
  43
  44 NS_IMETHODIMP
  45 aaDBXMLtoXMLConverter::Convert(nsIInputStream *aFromStream,
  46     const char *aFromType, const char *aToType, nsISupports *aCtxt,
  47     nsIInputStream **_retval)
  48 {
  49   return NS_ERROR_NOT_IMPLEMENTED;
  50 }
  51
  52 NS_IMETHODIMP
  53 aaDBXMLtoXMLConverter::AsyncConvertData(const char *aFromType,
  54     const char *aToType, nsIStreamListener *aListener, nsISupports *ctxt)
  55 {
  56   NS_ENSURE_ARG_POINTER(aListener);
  57   mListener = aListener;
  58   return NS_OK;
  59 }
  60
  61 // nsIStreamListener method
  62 /* This method handles asyncronous conversion of data. */
  63 NS_IMETHODIMP
  64 aaDBXMLtoXMLConverter::OnDataAvailable(nsIRequest* request, nsISupports *aContext,
  65     nsIInputStream *aInStream, PRUint32 aSourceOffset, PRUint32 aCount)
  66 {
  67   NS_ENSURE_STATE(mListener);
  68   return mListener->OnDataAvailable(request, aContext, aInStream,
  69       aSourceOffset, aCount);
  70 }
  71
  72 // nsIRequestObserver methods
  73 /* These methods just pass through directly to the mListener */
  74 NS_IMETHODIMP
  75 aaDBXMLtoXMLConverter::OnStartRequest(nsIRequest* request, nsISupports *ctxt)
  76 {
  77   nsresult rv = NS_OK;
  78   NS_ENSURE_STATE(mListener);
  79
  80   nsCOMPtr<nsIChannel> channel =
  81     do_QueryInterface(request, &rv);
  82   NS_ENSURE_SUCCESS(rv, rv);
  83
  84   rv = channel->SetContentType(NS_LITERAL_CSTRING(TEXT_XML));
  85   NS_ENSURE_SUCCESS(rv, rv);
  86
  87   return mListener->OnStartRequest(request, ctxt);
  88 }
  89
  90 NS_IMETHODIMP
  91 aaDBXMLtoXMLConverter::OnStopRequest(nsIRequest* request, nsISupports *ctxt,
  92     nsresult aStatus)
  93 {
  94   NS_ENSURE_STATE(mListener);
  95   return mListener->OnStopRequest(request, ctxt, aStatus);
  96 }
  97