pagination function

function sog_use_permalink() {
    if ( get_option('permalink_structure') != '' ) {
        return true;
    } else {
        return false;
    }
}

function sog_pagination( $query, $baseURL = '', $range = 2 ) {
    if ( ! $baseURL ) $baseURL = get_bloginfo( 'url' );
    $page = $query->query_vars["paged"];
    $total_pages = $query->max_num_pages;
    if ( !$page ) $page = 1;
    $qs = $_SERVER["QUERY_STRING"] ? "?".$_SERVER["QUERY_STRING"] : "";
    // Only necessary if there's more posts than posts-per-page
    if ( $query->found_posts > $query->query_vars["posts_per_page"] ) {
        echo '<div class="paging">';
        // First link
        if( $page-$range > $range ) {
            if( sog_use_permalink() ) {
                echo '<a class="next" href="'.$baseURL.'/page/1/'.'">First [1]</a>';
            } else {
                echo '<a class="next" href="'.$baseURL.'/'.add_query_arg('paged', '1', $qs).'">First [1]</a>';
            }
        }
        // Previous link?
        if ( $page > 1 ) {
            if( sog_use_permalink() ) {
                echo '<a class="previous" href="'.$baseURL.'/page/'.($page-1).'/'.'">&laquo; previous</a>';
            } else {
                echo '<a class="previous" href="'.$baseURL.'/'.add_query_arg('paged', ($page-1), $qs).'">&laquo; previous</a>';
            }
        }
        // Loop through pages
        for ( $i=1; $i <= $total_pages; $i++ ) {
            // Current page or linked page?
            if ( $i == $page ) {
                echo '<span class="active">' . $i . '</span>';
            } else {
                if( $i == $page+$range || $i == $page-$range ) {
                    if( sog_use_permalink() ) {
                        echo '<a href="'.$baseURL.'page/'.$i.'/">'.$i.'</a>';
                    } else {
                        echo '<a href="'.$baseURL.add_query_arg('paged', $i, $qs).'">'.$i.'</a>';
                    }
                }
            }
        }
        // Next link?
        if ( $page < $total_pages ) {
            if( sog_use_permalink() ) {
                echo '<a class="next" href="'.$baseURL.'/page/'.($page+1).'/'.'">next &raquo;</a>';
            } else {
                echo '<a class="next" href="'.$baseURL.'/'.add_query_arg('paged', ($page+1), $qs).'">next &raquo;</a>';
            }
        }
        // Last link
        if( $page+$range < $total_pages ) {
            if( sog_use_permalink() ) {
                echo '<a class="next" href="'.$baseURL.'/page/' . $total_pages . '/'.'">Last [' . $total_pages . ']</a>';
            } else {
                echo '<a class="next" href="'.$baseURL.'/'.add_query_arg('paged', ($total_pages), $qs).'">Last [' . $total_pages . ']</a>';
            }
        }
        echo '</div>';
    }
    wp_reset_postdata();
}