QuotesTrait.php

<?php
/*
 * citeproc-php
 *
 * @link        http://github.com/seboettg/citeproc-php for the source repository
 * @copyright   Copyright (c) 2017 Sebastian Böttger.
 * @license     https://opensource.org/licenses/MIT
 */
 
namespace Seboettg\CiteProc\Styles;
 
use Seboettg\CiteProc\CiteProc;
use Seboettg\CiteProc\Util\StringHelper;
use SimpleXMLElement;
 
trait QuotesTrait
{
 
    private $quotes = false;
 
    public function initQuotesAttributes(SimpleXMLElement $node)
    {
        if (isset($node['quotes']) && "true" === (string) $node['quotes']) {
            $this->quotes = true;
        }
    }
 
    public function addSurroundingQuotes($text)
    {
        if ($this->quotes) {
            $openQuote = CiteProc::getContext()->getLocale()->filter("terms", "open-quote")->single;
            $closeQuote = CiteProc::getContext()->getLocale()->filter("terms", "close-quote")->single;
            $text = $this->replaceOuterQuotes($text, $openQuote, $closeQuote);
            return $openQuote . $text . $closeQuote;
        }
        return $text;
    }
 
    private function replaceOuterQuotes($text, $outerOpenQuote, $outerCloseQuote)
    {
        $innerOpenQuote = CiteProc::getContext()
            ->getLocale()
            ->filter("terms", "open-inner-quote")
            ->single;
        $innerCloseQuote = CiteProc::getContext()
            ->getLocale()
            ->filter("terms", "close-inner-quote")
            ->single;
        $text = StringHelper::replaceOuterQuotes(
            $text,
            "\"",
            "\"",
            $innerOpenQuote,
            $innerCloseQuote
        );
        $text = StringHelper::replaceOuterQuotes(
            $text,
            $outerOpenQuote,
            $outerCloseQuote,
            $innerOpenQuote,
            $innerCloseQuote
        );
        return $text;
    }
}