gecko/netwerk/protocol/about/public/nsAboutProtocolUtils.h

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/* ***** 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 nsAboutProtocolUtils.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* L. David Baron <dbaron@dbaron.org> (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 ***** */
#include "nsIURI.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsIAboutModule.h"
inline nsresult
NS_GetAboutModuleName(nsIURI *aAboutURI, nsCString& aModule)
{
#ifdef DEBUG
{
PRBool isAbout;
NS_ASSERTION(NS_SUCCEEDED(aAboutURI->SchemeIs("about", &isAbout)) &&
isAbout,
"should be used only on about: URIs");
}
#endif
nsresult rv = aAboutURI->GetPath(aModule);
NS_ENSURE_SUCCESS(rv, rv);
PRInt32 f = aModule.FindCharInSet(NS_LITERAL_CSTRING("#?"));
if (f != kNotFound) {
aModule.Truncate(f);
}
// convert to lowercase, as all about: modules are lowercase
ToLowerCase(aModule);
return NS_OK;
}
inline nsresult
NS_GetAboutModule(nsIURI *aAboutURI, nsIAboutModule** aModule)
{
NS_PRECONDITION(aAboutURI, "Must have URI");
nsCAutoString contractID;
nsresult rv = NS_GetAboutModuleName(aAboutURI, contractID);
if (NS_FAILED(rv)) return rv;
// look up a handler to deal with "what"
contractID.Insert(NS_LITERAL_CSTRING(NS_ABOUT_MODULE_CONTRACTID_PREFIX), 0);
return CallGetService(contractID.get(), aModule);
}