gecko/content/base/src/nsXMLNameSpaceMap.cpp

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/* -*- 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 Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* IBM Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Ryner <bryner@brianryner.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/*
* A class for keeping track of prefix-to-namespace-id mappings
*/
#include "nsXMLNameSpaceMap.h"
#include "nsINameSpaceManager.h"
#include "nsContentUtils.h"
#include "nsGkAtoms.h"
NS_SPECIALIZE_TEMPLATE
class nsDefaultComparator <nsNameSpaceEntry, nsIAtom*> {
public:
PRBool Equals(const nsNameSpaceEntry& aEntry, nsIAtom* const& aPrefix) const {
return aEntry.prefix == aPrefix;
}
};
NS_SPECIALIZE_TEMPLATE
class nsDefaultComparator <nsNameSpaceEntry, PRInt32> {
public:
PRBool Equals(const nsNameSpaceEntry& aEntry, const PRInt32& aNameSpace) const {
return aEntry.nameSpaceID == aNameSpace;
}
};
/* static */ nsXMLNameSpaceMap*
nsXMLNameSpaceMap::Create(PRBool aForXML)
{
nsXMLNameSpaceMap *map = new nsXMLNameSpaceMap();
NS_ENSURE_TRUE(map, nsnull);
if (aForXML) {
nsresult rv = map->AddPrefix(nsGkAtoms::xmlns,
kNameSpaceID_XMLNS);
rv |= map->AddPrefix(nsGkAtoms::xml, kNameSpaceID_XML);
if (NS_FAILED(rv)) {
delete map;
map = nsnull;
}
}
return map;
}
nsXMLNameSpaceMap::nsXMLNameSpaceMap()
: mNameSpaces(4)
{
}
nsresult
nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, PRInt32 aNameSpaceID)
{
if (!mNameSpaces.Contains(aPrefix) && !mNameSpaces.AppendElement(aPrefix)) {
return NS_ERROR_OUT_OF_MEMORY;
}
mNameSpaces[mNameSpaces.IndexOf(aPrefix)].nameSpaceID = aNameSpaceID;
return NS_OK;
}
nsresult
nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, nsString &aURI)
{
PRInt32 id;
nsresult rv = nsContentUtils::NameSpaceManager()->RegisterNameSpace(aURI,
id);
NS_ENSURE_SUCCESS(rv, rv);
return AddPrefix(aPrefix, id);
}
void
nsXMLNameSpaceMap::RemovePrefix(nsIAtom *aPrefix)
{
mNameSpaces.RemoveElement(aPrefix);
}
PRInt32
nsXMLNameSpaceMap::FindNameSpaceID(nsIAtom *aPrefix) const
{
PRUint32 index = mNameSpaces.IndexOf(aPrefix);
if (index != mNameSpaces.NoIndex) {
return mNameSpaces[index].nameSpaceID;
}
// The default mapping for no prefix is no namespace. If a non-null prefix
// was specified and we didn't find it, we return an error.
return aPrefix ? kNameSpaceID_Unknown : kNameSpaceID_None;
}
nsIAtom*
nsXMLNameSpaceMap::FindPrefix(PRInt32 aNameSpaceID) const
{
PRUint32 index = mNameSpaces.IndexOf(aNameSpaceID);
if (index != mNameSpaces.NoIndex) {
return mNameSpaces[index].prefix;
}
return nsnull;
}
void
nsXMLNameSpaceMap::Clear()
{
mNameSpaces.Clear();
}