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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

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

nsNameSpaceMap::nsNameSpaceMap() : mEntries(nullptr) {
  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, nsAtom* aPrefix) {
  nsCString uriUTF8;
  AppendUTF16toUTF8(aURI, uriUTF8);
  return Put(uriUTF8, aPrefix);
}

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

  // Make sure we're not adding a duplicate
  for (entry = mEntries; entry != nullptr; 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 nsACString& aURI) const {
  for (Entry* entry = mEntries; entry != nullptr; entry = entry->mNext) {
    if (StringBeginsWith(aURI, entry->mURI)) return const_iterator(entry);
  }

  return last();
}