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/**
 * Trait for shared output functionality.
 *
 * PHP version 7
 *
 * Copyright (c) Demian Katz 2016.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category VuFind
 * @package  Harvest_Tools
 * @author   Demian Katz <demian.katz@villanova.edu>
 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @link     https://vufind.org/wiki/indexing:oai-pmh Wiki
 */
namespace VuFindHarvest\ConsoleOutput;

/**
 * Trait for shared output functionality.
 *
 * @category VuFind
 * @package  Harvest_Tools
 * @author   Demian Katz <demian.katz@villanova.edu>
 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @link     https://vufind.org/wiki/indexing:oai-pmh Wiki
 */
trait WriterAwareTrait
{
    /**
     * Writer helper
     *
     * @var WriterInterface
     */
    protected $outputWriter = null;

    /**
     * Set an object to accept console output messages.
     *
     * @param WriterInterface $writer Writer object
     *
     * @return void
     */
    public function setOutputWriter(WriterInterface $writer)
    {
        $this->outputWriter = $writer;
    }

    /**
     * Write a string to the console output writer (if set).
     *
     * @param string $str String to write.
     *
     * @return void
     */
    protected function write($str)
    {
        // Bypass output when silent:
        if ($this->outputWriter) {
            $this->outputWriter->write($str);
        }
    }

    /**
     * Write a string w/newline to the console output writer (if set).
     *
     * @param string $str String to write.
     *
     * @return void
     */
    protected function writeLine($str)
    {
        // Bypass output when silent:
        if ($this->outputWriter) {
            $this->outputWriter->writeLine($str);
        }
    }
}
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Copyright (c) Demian Katz 2016.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2,
as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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