package org.apache.maven.scm.provider.accurev.cli;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import java.util.regex.Pattern;
  
  import org.apache.maven.scm.log.ScmLogger;
  import org.codehaus.plexus.util.cli.StreamConsumer;
  
  /**
   * 
   */
  final class ErrorConsumer
      implements StreamConsumer
  {
  
      private static final Pattern[] SKIPPED_WARNINGS = {
          Pattern.compile( ".*replica sync on the master server.*" ),
          Pattern.compile( "No elements selected.*" ),
          Pattern.compile( "You are not in a directory.*" ),
          Pattern.compile( "Note.*" ),
          Pattern.compile( "\\s+(members,|conjunction).*" ) };
  
      private final ScmLogger logger;
  
      private final StringBuilder errors;
  
      public ErrorConsumer( ScmLogger logger, StringBuilder errors )
      {
          this.logger = logger;
          this.errors = errors;
      }
  
      public void consumeLine( String line )
      {
          errors.append( line );
          errors.append( '\n' );
  
          boolean matched = false;
  
          // if debugging log everything, otherwise log if doesn't match the skip patterns.
          int i = logger.isDebugEnabled() ? SKIPPED_WARNINGS.length : 0;
          while ( !matched && i < SKIPPED_WARNINGS.length )
          {
              matched = SKIPPED_WARNINGS[i++].matcher( line ).matches();
          }
  
          if ( !matched )
          {
              logger.warn( line );
          }
      }
  }