TreeHouse\Feeder\Modifier\Data\Transformer\LocalizedStringToNumberTransformer::transform()

Complexity

Conditions	16
Paths	23

Size

Total Lines	58
Code Lines	29

Duplication

Lines	6
Ratio	10.34 %

Code Coverage

Tests	33
CRAP Score	16.0065

Importance

Changes

0

<?php
    public function transform($value)
    {
        if (!is_string($value) && !is_numeric($value)) {
            throw new TransformationFailedException(
                sprintf('Expected a string to transform, got "%s" instead.', json_encode($value))
            );
        }

        if ('' === $value) {
            return null;
        }

        if ('NaN' === $value) {
            throw new TransformationFailedException('"NaN" is not a valid number');
        }

        $position = 0;
        $formatter = $this->getNumberFormatter();
        $groupSep = $formatter->getSymbol(\NumberFormatter::GROUPING_SEPARATOR_SYMBOL);
        $decSep = $formatter->getSymbol(\NumberFormatter::DECIMAL_SEPARATOR_SYMBOL);

        if ('.' !== $decSep && (!$this->grouping || '.' !== $groupSep)) {

This code seems to be duplicated across your project.

            $value = str_replace('.', $decSep, $value);
        }

        if (',' !== $decSep && (!$this->grouping || ',' !== $groupSep)) {

This code seems to be duplicated across your project.

            $value = str_replace(',', $decSep, $value);
        }

        $result = $formatter->parse($value, \NumberFormatter::TYPE_DOUBLE, $position);

        if (intl_is_failure($formatter->getErrorCode())) {
            throw new TransformationFailedException($formatter->getErrorMessage());
        }

        if ($result >= PHP_INT_MAX || $result <= -PHP_INT_MAX) {
            throw new TransformationFailedException('I don\'t have a clear idea what infinity looks like');
        }

        $encoding = mb_detect_encoding($value);
        $length = mb_strlen($value, $encoding);

        // After parsing, position holds the index of the character where the parsing stopped
        if ($position < $length) {
            // Check if there are unrecognized characters at the end of the
            // number (excluding whitespace characters)
            $remainder = trim(mb_substr($value, $position, $length, $encoding), " \t\n\r\0\x0b\xc2\xa0");

            if ('' !== $remainder) {
                throw new TransformationFailedException(
                    sprintf('The number contains unrecognized characters: "%s"', $remainder)
                );
            }
        }

        // Only the format() method in the NumberFormatter rounds, whereas parse() does not
        return $this->round($result);
    }