StringLengthValidator.php

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<?php
namespace TYPO3\CMS\Extbase\Validation\Validator;

class StringLengthValidator extends AbstractValidator {

    protected $supportedOptions = array(
        'minimum' => array(0, 'Minimum length for a valid string', 'integer'),
        'maximum' => array(PHP_INT_MAX, 'Maximum length for a valid string', 'integer')
    );

    public function isValid($value) {
        if ($this->options['maximum'] < $this->options['minimum']) {
            throw new \TYPO3\CMS\Extbase\Validation\Exception\InvalidValidationOptionsException('The \'maximum\' is shorter than the \'minimum\' in the StringLengthValidator.', 1238107096);
        }

        if (is_object($value)) {
            if (!method_exists($value, '__toString')) {
                $this->addError('The given object could not be converted to a string.', 1238110957);
                return;
            }
        } elseif (!is_string($value)) {
            $this->addError('The given value was not a valid string.', 1269883975);
            return;
        }

        // TODO Use \TYPO3\CMS\Core\Charset\CharsetConverter::strlen() instead; How do we get the charset?
        $stringLength = strlen($value);
        $isValid = TRUE;
        if ($stringLength < $this->options['minimum']) {
            $isValid = FALSE;
        }
        if ($stringLength > $this->options['maximum']) {
            $isValid = FALSE;
        }

        if ($isValid === FALSE) {
            if ($this->options['minimum'] > 0 && $this->options['maximum'] < PHP_INT_MAX) {
                $this->addError(
                    $this->translateErrorMessage(
                        'validator.stringlength.between',
                        'extbase',
                        array (
                            $this->options['minimum'],
                            $this->options['maximum']
                        )
                    ), 1428504122, array($this->options['minimum'], $this->options['maximum']));
            } elseif ($this->options['minimum'] > 0) {
                $this->addError(
                    $this->translateErrorMessage(
                        'validator.stringlength.less',
                        'extbase',
                        array(
                            $this->options['minimum']
                        )
                    ), 1238108068, array($this->options['minimum']));
            } else {
                $this->addError(
                    $this->translateErrorMessage(
                        'validator.stringlength.exceed',
                        'extbase',
                        array(
                            $this->options['maximum']
                        )
                    ), 1238108069, array($this->options['maximum']));
            }
        }
    }
}