protected String interpolateInternal()

in maven-project/src/main/java/org/apache/maven/project/interpolation/AbstractStringBasedModelInterpolator.java [286:378]
81 lines of code
15 McCabe index (conditional complexity)

    protected String interpolateInternal( String src, List<ValueSource> valueSources,
                                          List<InterpolationPostProcessor> postProcessors, boolean debug )
        throws ModelInterpolationException
    {
        if ( src.indexOf( "${" ) < 0 )
        {
            return src;
        }
        
        Logger logger = getLogger();

        String result = src;
        synchronized( this )
        {
            
            for ( ValueSource vs : valueSources )
            {
                interpolator.addValueSource( vs );
            }
            
            for ( InterpolationPostProcessor postProcessor : postProcessors )
            {
                interpolator.addPostProcessor( postProcessor );
            }

            try
            {
                try
                {
                    result = interpolator.interpolate( result, recursionInterceptor );
                }
                catch( InterpolationException e )
                {
                    throw new ModelInterpolationException( e.getMessage(), e );
                }

                if ( debug )
                {
                    List<Object> feedback = (List<Object>) interpolator.getFeedback();
                    if ( feedback != null && !feedback.isEmpty() )
                    {
                        logger.debug( "Maven encountered the following problems during initial POM interpolation:" );

                        Object last = null;
                        for ( Object next : feedback )
                        {
                            if ( next instanceof Throwable )
                            {
                                if ( last == null )
                                {
                                    logger.debug( "", ( (Throwable) next ) );
                                }
                                else
                                {
                                    logger.debug( String.valueOf( last ), ( (Throwable) next ) );
                                }
                            }
                            else
                            {
                                if ( last != null )
                                {
                                    logger.debug( String.valueOf( last ) );
                                }

                                last = next;
                            }
                        }

                        if ( last != null )
                        {
                            logger.debug( String.valueOf( last ) );
                        }
                    }
                }

                interpolator.clearFeedback();
            }
            finally
            {
                for ( ValueSource vs : valueSources )
                {
                    interpolator.removeValuesSource( vs );
                }
                
                for ( InterpolationPostProcessor postProcessor : postProcessors )
                {
                    interpolator.removePostProcessor( postProcessor );
                }
            }
        }

        return result;
    }