/* -*- 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 mozilla.org Code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Chris Waterson <waterson@netscape.com>
 *   Robert John Churchill <rjc@netscape.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
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 * ***** END LICENSE BLOCK ***** */

#include "nsNameSpaceMap.h"
#include "nsReadableUtils.h"

nsNameSpaceMap::nsNameSpaceMap()
    : mEntries(nsnull)
{
    MOZ_COUNT_CTOR(nsNameSpaceMap);
}

nsNameSpaceMap::~nsNameSpaceMap()
{
    MOZ_COUNT_DTOR(nsNameSpaceMap);

    while (mEntries) {
        Entry* doomed = mEntries;
        mEntries = mEntries->mNext;
        delete doomed;
    }
}

nsresult
nsNameSpaceMap::Put(const nsAString& aURI, nsIAtom* aPrefix)
{
    nsCString uriUTF8;
    AppendUTF16toUTF8(aURI, uriUTF8);
    return Put(uriUTF8, aPrefix);
}

nsresult
nsNameSpaceMap::Put(const nsCSubstring& aURI, nsIAtom* aPrefix)
{
    Entry* entry;

    // Make sure we're not adding a duplicate
    for (entry = mEntries; entry != nsnull; entry = entry->mNext) {
        if (entry->mURI == aURI || entry->mPrefix == aPrefix)
            return NS_ERROR_FAILURE;
    }

    entry = new Entry(aURI, aPrefix);
    if (! entry)
        return NS_ERROR_OUT_OF_MEMORY;

    entry->mNext = mEntries;
    mEntries = entry;
    return NS_OK;
}

nsNameSpaceMap::const_iterator
nsNameSpaceMap::GetNameSpaceOf(const nsCSubstring& aURI) const
{
    for (Entry* entry = mEntries; entry != nsnull; entry = entry->mNext) {
        if (StringBeginsWith(aURI, entry->mURI))
            return const_iterator(entry);
    }

    return last();
}