Compatibility with a bootstrap theme

Hi,

I am making a bootstrap theme, which you can find here: https://github.com/swashata/ipt-knowledgebase-theme-wp .

I intend to give inbuilt compatibility with your plugin. For that, I needed to convert the output of the plugin to some HTML compatible with bootstrap. This is the code I am using in my theme and so far it has worked good:

if ( function_exists( 'wp_pagenavi' ) && ! is_single() ) {
		$wp_pagenavi = wp_pagenavi( array(
			'echo' => false,
		) );

		$wp_pagenavi = str_replace( array(
			"<div class='wp-pagenavi'>",
			'</div>',
			"<span class='pages'>",
			'</span>',
			"<span class='current'>",
			'<a href=',
			'</a>',
			"<span class='extend'>",
			/* translator: Translate it to the output of WP PageNavi for your lang */
			__( '? First', 'ipt_kb' ),
			/* translator: Translate it to the output of WP PageNavi for your lang */
			__( 'Last ?', 'ipt_kb' ),
			'?',
			'?',
		), array(
			'<ul class="pagination">',
			'</ul>',
			'<li class="disabled"><span>',
			'</span></li>',
			'<li class="active"><span>',
			'<li><a href=',
			'</a></li>',
			'<li class="disabled"><span>',
			'<i class="glyphicon glyphicon-fast-backward"></i>',
			'<i class="glyphicon glyphicon-fast-forward"></i>',
			'<i class="glyphicon glyphicon-backward"></i>',
			'<i class="glyphicon glyphicon-forward"></i>',
		), $wp_pagenavi );

		echo $wp_pagenavi;
		return;
	}

Please see this image for the output: https://ipanelthemes.com/kb/files/2013/10/WP-PageNavi.png

Please let me know if I am doing it wrong or it can be done in a better way.

https://www.ads-software.com/plugins/wp-pagenavi/