RetroZilla/extensions/venkman/resources/content/venkman-url-loader.js

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2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** 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 The JavaScript Debugger.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Robert Ginda, <rginda@netscape.com>, original author
*
* 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 ***** */
const IOSERVICE_CTRID = "@mozilla.org/network/io-service;1";
const nsIIOService = Components.interfaces.nsIIOService;
const SIS_CTRID = "@mozilla.org/scriptableinputstream;1"
const nsIScriptableInputStream = Components.interfaces.nsIScriptableInputStream;
const nsIChannel = Components.interfaces.nsIChannel;
const nsIInputStream = Components.interfaces.nsIInputStream;
const nsIRequest = Components.interfaces.nsIRequest;
function _getChannelForURL (url)
{
var serv = Components.classes[IOSERVICE_CTRID].getService(nsIIOService);
if (!serv)
throw new BadMojo(ERR_FAILURE);
return serv.newChannel(url, null, null);
}
function loadURLNow (url)
{
var chan = _getChannelForURL (url);
chan.loadFlags |= nsIRequest.LOAD_BYPASS_CACHE;
var instream =
Components.classes[SIS_CTRID].createInstance(nsIScriptableInputStream);
instream.init (chan.open());
var result = "";
var avail;
while ((avail = instream.available()) > 0)
result += instream.read(avail);
return result;
}
function loadURLAsync (url, observer)
{
var chan = _getChannelForURL (url);
chan.loadFlags |= nsIRequest.LOAD_BYPASS_CACHE;
return chan.asyncOpen (new StreamListener (url, observer), null);
}
function StreamListener(url, observer)
{
this.data = "";
this.url = url;
this.observer = observer;
}
StreamListener.prototype.onStartRequest =
function (request, context)
{
//dd ("onStartRequest()");
}
StreamListener.prototype.onStopRequest =
function (request, context, status)
{
//dd ("onStopRequest(): status: " + status /* + "\n" + this.data*/);
if (typeof this.observer.onComplete == "function")
this.observer.onComplete (this.data, this.url, status);
}
StreamListener.prototype.onDataAvailable =
function (request, context, inStr, sourceOffset, count)
{
//dd ("onDataAvailable(): " + count);
// sometimes the inStr changes between onDataAvailable calls, so we
// can't cache it.
var sis =
Components.classes[SIS_CTRID].createInstance(nsIScriptableInputStream);
sis.init(inStr);
this.data += sis.read(count);
}