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lightning-sunbird  0.9+nobinonly
txNamespaceMap.cpp
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is TransforMiiX XSLT processor code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Jonas Sicking.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Jonas Sicking <jonas@sicking.cc>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "txNamespaceMap.h"
00040 #include "txAtoms.h"
00041 #include "txXPathNode.h"
00042 
00043 txNamespaceMap::txNamespaceMap()
00044 {
00045 }
00046 
00047 txNamespaceMap::txNamespaceMap(const txNamespaceMap& aOther)
00048     : mPrefixes(aOther.mPrefixes)
00049 {
00050     mNamespaces = aOther.mNamespaces; //bah! I want a copy-constructor!
00051 }
00052 
00053 nsresult
00054 txNamespaceMap::mapNamespace(nsIAtom* aPrefix, const nsAString& aNamespaceURI)
00055 {
00056     nsIAtom* prefix = aPrefix == txXMLAtoms::_empty ? nsnull : aPrefix;
00057 
00058     PRInt32 nsId;
00059     if (prefix && aNamespaceURI.IsEmpty()) {
00060         // Remove the mapping
00061         PRInt32 index = mPrefixes.IndexOf(prefix);
00062         if (index >= 0) {
00063             mPrefixes.RemoveObjectAt(index);
00064             mNamespaces.RemoveElementAt(index);
00065         }
00066 
00067         return NS_OK;
00068     }
00069 
00070     if (aNamespaceURI.IsEmpty()) {
00071         // Set default to empty namespace
00072         nsId = kNameSpaceID_None;
00073     }
00074     else {
00075         nsId = txNamespaceManager::getNamespaceID(aNamespaceURI);
00076         NS_ENSURE_FALSE(nsId == kNameSpaceID_Unknown, NS_ERROR_FAILURE);
00077     }
00078 
00079     // Check if the mapping already exists
00080     PRInt32 index = mPrefixes.IndexOf(prefix);
00081     if (index >= 0) {
00082         mNamespaces.ReplaceElementAt(NS_INT32_TO_PTR(nsId), index);
00083 
00084         return NS_OK;
00085     }
00086 
00087     // New mapping
00088     if (!mPrefixes.AppendObject(prefix)) {
00089         return NS_ERROR_OUT_OF_MEMORY;
00090     }
00091     
00092     if (!mNamespaces.AppendElement(NS_INT32_TO_PTR(nsId))) {
00093         mPrefixes.RemoveObjectAt(mPrefixes.Count() - 1);
00094 
00095         return NS_ERROR_OUT_OF_MEMORY;
00096     }
00097 
00098     return NS_OK;
00099 }
00100 
00101 PRInt32
00102 txNamespaceMap::lookupNamespace(nsIAtom* aPrefix)
00103 {
00104     if (aPrefix == txXMLAtoms::xml) {
00105         return kNameSpaceID_XML;
00106     }
00107 
00108     nsIAtom* prefix = aPrefix == txXMLAtoms::_empty ? 0 : aPrefix;
00109 
00110     PRInt32 index = mPrefixes.IndexOf(prefix);
00111     if (index >= 0) {
00112         return NS_PTR_TO_INT32(mNamespaces.SafeElementAt(index));
00113     }
00114 
00115     if (!prefix) {
00116         return kNameSpaceID_None;
00117     }
00118 
00119     return kNameSpaceID_Unknown;
00120 }
00121 
00122 PRInt32
00123 txNamespaceMap::lookupNamespace(const nsAString& aPrefix)
00124 {
00125     nsCOMPtr<nsIAtom> prefix = do_GetAtom(aPrefix);
00126 
00127     return lookupNamespace(prefix);
00128 }
00129 
00130 PRInt32
00131 txNamespaceMap::lookupNamespaceWithDefault(const nsAString& aPrefix)
00132 {
00133     nsCOMPtr<nsIAtom> prefix = do_GetAtom(aPrefix);
00134     if (prefix != txXSLTAtoms::_poundDefault) {
00135         return lookupNamespace(prefix);
00136     }
00137 
00138     return lookupNamespace(nsnull);
00139 }