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196 lines
5.4 KiB
C++
Executable File
196 lines
5.4 KiB
C++
Executable File
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brian Ryner <bryner@brianryner.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 class for keeping track of prefix-to-namespace-id mappings
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*/
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#include "nsXMLNameSpaceMap.h"
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#include "nsIAtom.h"
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#include "nsCOMPtr.h"
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#include "nsINameSpaceManager.h"
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#include "nsContentUtils.h"
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#include "nsGkAtoms.h"
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struct nsNameSpaceEntry
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{
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nsNameSpaceEntry(nsIAtom *aPrefix)
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: prefix(aPrefix) {}
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nsCOMPtr<nsIAtom> prefix;
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PRInt32 nameSpaceID;
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};
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/* static */ nsXMLNameSpaceMap*
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nsXMLNameSpaceMap::Create()
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{
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nsXMLNameSpaceMap *map = new nsXMLNameSpaceMap();
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NS_ENSURE_TRUE(map, nsnull);
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nsresult rv = map->AddPrefix(nsGkAtoms::xmlns,
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kNameSpaceID_XMLNS);
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rv |= map->AddPrefix(nsGkAtoms::xml, kNameSpaceID_XML);
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if (NS_FAILED(rv)) {
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delete map;
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map = nsnull;
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}
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return map;
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}
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nsXMLNameSpaceMap::nsXMLNameSpaceMap()
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: mNameSpaces(4)
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{
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}
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nsresult
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nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, PRInt32 aNameSpaceID)
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{
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PRInt32 count = mNameSpaces.Count();
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nsNameSpaceEntry *foundEntry = nsnull;
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for (PRInt32 i = 0; i < count; ++i) {
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nsNameSpaceEntry *entry = NS_STATIC_CAST(nsNameSpaceEntry*,
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mNameSpaces.FastElementAt(i));
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NS_ASSERTION(entry, "null entry in namespace map!");
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if (entry->prefix == aPrefix) {
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foundEntry = entry;
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break;
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}
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}
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if (!foundEntry) {
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foundEntry = new nsNameSpaceEntry(aPrefix);
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NS_ENSURE_TRUE(foundEntry, NS_ERROR_OUT_OF_MEMORY);
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if (!mNameSpaces.AppendElement(foundEntry)) {
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delete foundEntry;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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foundEntry->nameSpaceID = aNameSpaceID;
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return NS_OK;
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}
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nsresult
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nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, nsString &aURI)
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{
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PRInt32 id;
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nsresult rv = nsContentUtils::NameSpaceManager()->RegisterNameSpace(aURI,
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id);
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NS_ENSURE_SUCCESS(rv, rv);
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return AddPrefix(aPrefix, id);
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}
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void
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nsXMLNameSpaceMap::RemovePrefix(nsIAtom *aPrefix)
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{
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PRInt32 count = mNameSpaces.Count();
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for (PRInt32 i = 0; i < count; ++i) {
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nsNameSpaceEntry *entry = NS_STATIC_CAST(nsNameSpaceEntry*,
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mNameSpaces.FastElementAt(i));
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NS_ASSERTION(entry, "null entry in namespace map!");
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if (entry->prefix == aPrefix) {
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mNameSpaces.RemoveElementAt(i);
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return;
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}
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}
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}
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PRInt32
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nsXMLNameSpaceMap::FindNameSpaceID(nsIAtom *aPrefix) const
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{
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PRInt32 count = mNameSpaces.Count();
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for (PRInt32 i = 0; i < count; ++i) {
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nsNameSpaceEntry *entry = NS_STATIC_CAST(nsNameSpaceEntry*,
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mNameSpaces.FastElementAt(i));
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NS_ASSERTION(entry, "null entry in namespace map!");
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if (entry->prefix == aPrefix) {
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return entry->nameSpaceID;
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}
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}
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// The default mapping for no prefix is no namespace. If a non-null prefix
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// was specified and we didn't find it, we return an error.
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return aPrefix ? kNameSpaceID_Unknown : kNameSpaceID_None;
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}
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nsIAtom*
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nsXMLNameSpaceMap::FindPrefix(PRInt32 aNameSpaceID) const
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{
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PRInt32 count = mNameSpaces.Count();
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for (PRInt32 i = 0; i < count; ++i) {
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nsNameSpaceEntry *entry = NS_STATIC_CAST(nsNameSpaceEntry*,
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mNameSpaces.FastElementAt(i));
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NS_ASSERTION(entry, "null entry in namespace map!");
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if (entry->nameSpaceID == aNameSpaceID) {
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return entry->prefix;
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}
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}
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return nsnull;
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}
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PR_STATIC_CALLBACK(PRBool) DeleteEntry(void *aElement, void *aData)
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{
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delete NS_STATIC_CAST(nsNameSpaceEntry*, aElement);
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return PR_TRUE;
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}
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void
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nsXMLNameSpaceMap::Clear()
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{
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mNameSpaces.EnumerateForwards(DeleteEntry, nsnull);
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}
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