mirror of
https://github.com/rn10950/RetroZilla.git
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322 lines
9.1 KiB
C++
322 lines
9.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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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/*
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A simple test program that reads in RDF/XML into an in-memory data
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source, then periodically updates it. It prints the messages
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indicating assert and unassert activity to the console.
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The program takes two parameters: the URL from which to read, and
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the poll-interval at which to re-load the .
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*/
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#include <stdlib.h>
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#include "nsXPCOM.h"
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#include "nsCOMPtr.h"
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#include "nsIEventQueueService.h"
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#include "nsIInputStream.h"
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#include "nsIIOService.h"
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#include "nsIRDFCompositeDataSource.h"
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#include "nsIRDFRemoteDataSource.h"
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#include "nsIRDFNode.h"
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#include "nsIRDFService.h"
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#include "nsIRDFXMLSource.h"
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#include "nsIServiceManager.h"
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#include "nsIStreamListener.h"
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#include "nsIURL.h"
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#include "nsRDFCID.h"
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#include "nsIComponentManager.h"
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#include "nsXPIDLString.h"
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#include "prthread.h"
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#include "plevent.h"
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#include "plstr.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsNetCID.h"
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#include "nsCRT.h"
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////////////////////////////////////////////////////////////////////////
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// CIDs
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// rdf
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static NS_DEFINE_CID(kRDFXMLDataSourceCID, NS_RDFXMLDATASOURCE_CID);
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// xpcom
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static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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////////////////////////////////////////////////////////////////////////
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// IIDs
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#include "nsIMemory.h" // for the CID
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////////////////////////////////////////////////////////////////////////
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class Observer : public nsIRDFObserver
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{
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public:
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Observer();
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virtual ~Observer() {}
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// nsISupports interface
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NS_DECL_ISUPPORTS
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// nsIRDFObserver interface
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NS_DECL_NSIRDFOBSERVER
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};
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Observer::Observer()
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{
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}
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NS_IMPL_ISUPPORTS1(Observer, nsIRDFObserver)
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static nsresult
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rdf_WriteOp(const char* aOp,
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nsIRDFResource* aSource,
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nsIRDFResource* aProperty,
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nsIRDFNode* aTarget)
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{
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nsresult rv;
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nsXPIDLCString source;
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rv = aSource->GetValue(getter_Copies(source));
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if (NS_FAILED(rv)) return rv;
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nsXPIDLCString property;
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rv = aProperty->GetValue(getter_Copies(property));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIRDFResource> resource;
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nsCOMPtr<nsIRDFLiteral> literal;
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nsCOMPtr<nsIRDFDate> date;
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nsCOMPtr<nsIRDFInt> number;
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printf("%.8s [%s]\n", aOp, (const char*) source);
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printf(" --[%s]--\n", (const char*) property);
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if ((resource = do_QueryInterface(aTarget)) != nsnull) {
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nsXPIDLCString target;
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rv = resource->GetValue(getter_Copies(target));
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if (NS_FAILED(rv)) return rv;
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printf(" ->[%s]\n", (const char*) target);
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}
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else if ((literal = do_QueryInterface(aTarget)) != nsnull) {
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nsXPIDLString target;
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rv = literal->GetValue(getter_Copies(target));
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if (NS_FAILED(rv)) return rv;
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char* p = ToNewCString(target);
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if (! p)
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return NS_ERROR_OUT_OF_MEMORY;
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printf(" ->\"%s\"\n", p);
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NS_Free(p);
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}
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else if ((date = do_QueryInterface(aTarget)) != nsnull) {
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PRTime value;
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date->GetValue(&value);
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PRExplodedTime t;
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PR_ExplodeTime(value, PR_GMTParameters, &t);
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printf(" -> %02d/%02d/%04d %02d:%02d:%02d +%06d\n",
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t.tm_month + 1,
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t.tm_mday,
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t.tm_year,
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t.tm_hour,
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t.tm_min,
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t.tm_sec,
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t.tm_usec);
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}
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else if ((number = do_QueryInterface(aTarget)) != nsnull) {
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PRInt32 value;
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number->GetValue(&value);
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printf(" -> %d\n", value);
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}
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else {
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printf(" -> (unknown node type)\n");
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}
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printf("\n");
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return NS_OK;
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}
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NS_IMETHODIMP
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Observer::OnAssert(nsIRDFDataSource* aDataSource,
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nsIRDFResource* aSource,
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nsIRDFResource* aProperty,
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nsIRDFNode* aTarget)
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{
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return rdf_WriteOp("assert", aSource, aProperty, aTarget);
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}
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NS_IMETHODIMP
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Observer::OnUnassert(nsIRDFDataSource* aDataSource,
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nsIRDFResource* aSource,
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nsIRDFResource* aProperty,
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nsIRDFNode* aTarget)
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{
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return rdf_WriteOp("unassert", aSource, aProperty, aTarget);
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}
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NS_IMETHODIMP
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Observer::OnChange(nsIRDFDataSource* aDataSource,
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nsIRDFResource* aSource,
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nsIRDFResource* aProperty,
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nsIRDFNode* aOldTarget,
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nsIRDFNode* aNewTarget)
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{
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nsresult rv;
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rv = rdf_WriteOp("chg-from", aSource, aProperty, aOldTarget);
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if (NS_FAILED(rv)) return rv;
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rv = rdf_WriteOp("chg-to", aSource, aProperty, aNewTarget);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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NS_IMETHODIMP
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Observer::OnMove(nsIRDFDataSource* aDataSource,
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nsIRDFResource* aOldSource,
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nsIRDFResource* aNewSource,
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nsIRDFResource* aProperty,
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nsIRDFNode* aTarget)
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{
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nsresult rv;
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rv = rdf_WriteOp("mv-from", aOldSource, aProperty, aTarget);
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if (NS_FAILED(rv)) return rv;
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rv = rdf_WriteOp("mv-to", aNewSource, aProperty, aTarget);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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NS_IMETHODIMP
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Observer::OnBeginUpdateBatch(nsIRDFDataSource* aDataSource)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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Observer::OnEndUpdateBatch(nsIRDFDataSource* aDataSource)
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{
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////
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int
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main(int argc, char** argv)
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{
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nsresult rv;
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if (argc < 2) {
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fprintf(stderr, "usage: %s <url> [<poll-interval>]\n", argv[0]);
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return 1;
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}
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rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
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if (NS_FAILED(rv)) {
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fprintf(stderr, "NS_InitXPCOM2 failed\n");
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return 1;
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}
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// Get netlib off the floor...
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nsCOMPtr<nsIEventQueueService> theEventQueueService =
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do_GetService(kEventQueueServiceCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = theEventQueueService->CreateThreadEventQueue();
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create thread event queue");
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if (NS_FAILED(rv)) return rv;
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// Create a stream data source and initialize it on argv[1], which
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// is hopefully a "file:" URL. (Actually, we can do _any_ kind of
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// URL, but only a "file:" URL will be written back to disk.)
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nsCOMPtr<nsIRDFDataSource> ds = do_CreateInstance(kRDFXMLDataSourceCID, &rv);
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if (NS_FAILED(rv)) {
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NS_ERROR("unable to create RDF/XML data source");
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return rv;
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}
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nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(ds);
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if (! remote)
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return NS_ERROR_UNEXPECTED;
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rv = remote->Init(argv[1]);
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to initialize data source");
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if (NS_FAILED(rv)) return rv;
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// The do_QI() on the pointer is a hack to make sure that the new
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// object gets AddRef()-ed.
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nsCOMPtr<nsIRDFObserver> observer = do_QueryInterface(new Observer);
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if (! observer)
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return NS_ERROR_OUT_OF_MEMORY;
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rv = ds->AddObserver(observer);
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if (NS_FAILED(rv)) return rv;
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while (1) {
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// Okay, this should load the XML file...
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rv = remote->Refresh(PR_TRUE);
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to open datasource");
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if (NS_FAILED(rv)) return rv;
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if (argc <= 2)
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break;
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PRInt32 pollinterval = atol(argv[2]);
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if (! pollinterval)
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break;
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PR_Sleep(PR_SecondsToInterval(pollinterval));
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}
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return NS_OK;
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}
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