public void execute()

in src/main/java/org/apache/maven/doxia/plugin/DoxiaRenderBooksMojo.java [123:252]
93 lines of code
16 McCabe index (conditional complexity)

    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        for ( Book book : books )
        {
            // ----------------------------------------------------------------------
            // Validate
            // ----------------------------------------------------------------------

            if ( StringUtils.isEmpty( book.getDescriptor() ) )
            {
                throw new MojoFailureException( "Invalid configuration: "
                    + "The book is required to have a descriptor set." );
            }

            if ( StringUtils.isEmpty( book.getDirectory() ) )
            {
                throw new MojoFailureException( "Invalid configuration: "
                    + "The book is required to have a directory set." );
            }

            if ( book.getFormats() == null || book.getFormats().size() == 0 )
            {
                throw new MojoFailureException( "Invalid configuration: "
                    + "The book is required to have at least one format set." );
            }

            // ----------------------------------------------------------------------
            //
            // ----------------------------------------------------------------------

            File descriptor = new File( basedir, book.getDescriptor() );

            String includes;
            if ( book.getIncludes() != null )
            {
                includes = StringUtils.join( book.getIncludes().iterator(), "," );
            }
            else
            {
                includes = "**/*";
            }

            String excludes = "";

            if ( book.getExcludes() != null )
            {
                excludes = StringUtils.join( book.getExcludes().iterator(), "," );
            }

            // ----------------------------------------------------------------------
            // Find all the files to pass to the renderer.
            // ----------------------------------------------------------------------

            if ( getLog().isDebugEnabled() )
            {
                getLog().debug( "Locating files to include in the book:" );
                getLog().debug( "Basedir: " + basedir );
                getLog().debug( "Includes: " + includes );
                getLog().debug( "Excludes: " + excludes );
            }

            List<File> files;

            try
            {
                files = FileUtils.getFiles( new File( basedir, book.getDirectory() ), includes, excludes );
            }
            catch ( IOException e )
            {
                throw new MojoExecutionException( "Error while looking for input files. " + "Basedir="
                    + basedir.getAbsolutePath() + ", " + "includes=" + includes + ", " + "excludes=" + excludes, e );
            }

            // -----------------------------------------------------------------------
            // Load the model
            // -----------------------------------------------------------------------

            BookModel bookModel;

            try
            {
                bookModel = bookDoxia.loadBook( descriptor );
            }
            catch ( InvalidBookDescriptorException e )
            {
                throw new MojoFailureException( "Invalid book descriptor: " + LINE_SEPARATOR
                    + formatResult( e.getValidationResult() ) );
            }
            catch ( BookDoxiaException e )
            {
                throw new MojoExecutionException( "Error while loading the book descriptor", e );
            }

            // -----------------------------------------------------------------------
            // Render the book in all the formats
            // -----------------------------------------------------------------------

            List<Locale> localesList = siteTool.getAvailableLocales( locales );

            // Default is first in the list
            Locale defaultLocale = localesList.get( 0 );
            Locale.setDefault( defaultLocale );

            for ( Locale locale : localesList )
            {
                for ( Format format : book.getFormats() )
                {
                    File outputDirectory = new File( generatedDocs, format.getId() );
                    File directory = new File( outputDirectory + "/" + locale.toString(), bookModel.getId() );

                    if ( locale.equals( defaultLocale ) )
                    {
                        directory = new File( outputDirectory, bookModel.getId() );
                    }

                    try
                    {
                        bookDoxia.renderBook( bookModel, format.getId(), files, directory, locale,
                                              getInputEncoding(), getOutputEncoding() );
                    }
                    catch ( BookDoxiaException e )
                    {
                        throw new MojoExecutionException( "Error while generating book in format '"
                            + format.getId() + "'.", e );
                    }
                }
            }
        }
    }