/**
    * Copyright (C) 2014-2017 Philip Helger (www.helger.com)
    * philip[at]helger[dot]com
    *
    * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.helger.schematron.svrl;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  import javax.annotation.concurrent.NotThreadSafe;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.helger.commons.annotation.PresentForCodeCoverage;
  import com.helger.commons.collection.ext.ICommonsList;
  import com.helger.commons.lang.ServiceLoaderHelper;
  
  /**
   * A central registry for all {@link ISVRLLocationBeautifierSPI} instances.
   *
   * @author Philip Helger
   */
  @NotThreadSafe
  public final class SVRLLocationBeautifierRegistry
  {
    private static final Logger s_aLogger = LoggerFactory.getLogger (SVRLLocationBeautifierRegistry.class);
    private static final ICommonsList <ISVRLLocationBeautifierSPI> s_aList = ServiceLoaderHelper.getAllSPIImplementations (ISVRLLocationBeautifierSPI.class);
  
    @PresentForCodeCoverage
    private static final SVRLLocationBeautifierRegistry s_aInstance = new SVRLLocationBeautifierRegistry ();
  
    private SVRLLocationBeautifierRegistry ()
    {}
  
    /**
     * Get the beautified location for the given namespace and local name.
     *
     * @param sNamespaceURI
     *        The namespace URI
     * @param sLocalName
     *        The element local name
     * @return <code>null</code> if no beautification is available
     */
    @Nullable
    public static String getBeautifiedLocation (@Nonnull final String sNamespaceURI, @Nonnull final String sLocalName)
    {
      for (final ISVRLLocationBeautifierSPI aBeautifier : s_aList)
      {
        final String sBeautified = aBeautifier.getReplacementText (sNamespaceURI, sLocalName);
        if (sBeautified != null)
          return sBeautified;
      }
      if (s_aLogger.isDebugEnabled ())
        s_aLogger.debug ("Unsupported elements for beautification: " + sNamespaceURI + " -- " + sLocalName);
      return null;
    }
  }