class.ilMailErrorFormatter.php

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<?php
/* Copyright (c) 1998-2016 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilMailErrorFormatter
{
    protected $lng;

    public function __construct(\ilLanguage $lng)
    {
        $this->lng = $lng;
    }

    public function format(array $errors) : string
    {
        if (0 === count($errors)) {
            return '';
        }

        $errorsToDisplay = [];
        foreach ($errors as $error) {
            $translation = $this->lng->txt($error->getLanguageVariable());
            if ($translation === '-' . $this->lng->txt($error->getLanguageVariable()) . '-') {
                $translation = $error->getLanguageVariable();
            }

            if (
                0 === count($error->getPlaceHolderValues()) ||
                $translation === $error->getLanguageVariable()
            ) {
                $errorsToDisplay[] = $translation;
            } else {
                $escapedPlaceholderValues = array_map(function (string $address) {
                    return \ilUtil::prepareFormOutput($address);
                }, $error->getPlaceHolderValues());

                array_unshift($escapedPlaceholderValues, $translation);
                $errorsToDisplay[] = call_user_func_array('sprintf', $escapedPlaceholderValues);
            }
        }

        if (0 === count($errorsToDisplay)) {
            return '';
        }

        $tpl = new \ilTemplate('tpl.mail_new_submission_errors.html', true, true, 'Services/Mail');
        if (1 === count($errorsToDisplay)) {
            $tpl->setCurrentBlock('single_error');
            $tpl->setVariable('SINGLE_ERROR', current($errorsToDisplay));
            $tpl->parseCurrentBlock();
        } else {
            $firstError = array_shift($errorsToDisplay);

            foreach ($errorsToDisplay as $error) {
                $tpl->setCurrentBlock('error_loop');
                $tpl->setVariable('ERROR', $error);
                $tpl->parseCurrentBlock();
            }

            $tpl->setCurrentBlock('multiple_errors');
            $tpl->setVariable('FIRST_ERROR', $firstError);
            $tpl->parseCurrentBlock();
        }

        return $tpl->get();
    }
}