TYPO3\CMS\Form\Domain\Finishers\AbstractFinisher::substituteRuntimeReferences()

Complexity

Conditions	7
Paths	5

Size

Total Lines	56
Code Lines	25

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    protected function substituteRuntimeReferences($needle, FormRuntime $formRuntime)
    {
        // neither array nor string, directly return
        if (!is_array($needle) && !is_string($needle)) {

The condition is_string($needle) is always true.

            return $needle;
        }

        // resolve (recursively) all array items
        if (is_array($needle)) {
            $substitutedNeedle = [];
            foreach ($needle as $key => $item) {
                $key = $this->substituteRuntimeReferences($key, $formRuntime);
                $item = $this->substituteRuntimeReferences($item, $formRuntime);
                $substitutedNeedle[$key] = $item;
            }
            return $substitutedNeedle;
        }

        // substitute one(!) variable in string which either could result
        // again in a string or an array representing multiple values
        if (preg_match('/^{([^}]+)}$/', $needle, $matches)) {
            return $this->resolveRuntimeReference(
                $matches[1],
                $formRuntime
            );
        }

        // in case string contains more than just one variable or just a static
        // value that does not need to be substituted at all, candidates are:
        // * "prefix{variable}suffix
        // * "{variable-1},{variable-2}"
        // * "some static value"
        // * mixed cases of the above
        return preg_replace_callback(
            '/{([^}]+)}/',
            function ($matches) use ($formRuntime) {
                $value = $this->resolveRuntimeReference(
                    $matches[1],
                    $formRuntime
                );

                // substitute each match by returning the resolved value
                if (!is_array($value)) {
                    return $value;
                }

                // now the resolve value is an array that shall substitute
                // a variable in a string that probably is not the only one
                // or is wrapped with other static string content (see above)
                // ... which is just not possible
                throw new FinisherException(
                    'Cannot convert array to string',
                    1519239265
                );
            },
            $needle
        );