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<?php |
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declare(strict_types=1); |
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namespace BenTools\Where\Helper; |
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/** |
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* @internal |
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*/ |
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final class Previewer |
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{ |
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/** |
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* @param string $expression |
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* @param array $values |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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public static function preview(string $expression, array $values = []): string |
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{ |
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if (0 === \count($values)) { |
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return $expression; |
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} |
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if (self::isSequentialArray($values)) { |
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return self::previewUnnamed($expression, $values); |
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} |
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return self::previewNamed($expression, $values); |
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} |
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/** |
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* @param string $expression |
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* @param array $values |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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private static function previewUnnamed(string $expression, array $values): string |
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{ |
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if (\count($values) !== \preg_match_all("/([\?])/", $expression)) { |
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throw new \InvalidArgumentException("Number of variables doesn't match number of parameters in statement"); |
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} |
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$preview = $expression; |
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foreach ($values as $value) { |
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$preview = \preg_replace("/([\?])/", self::escape($value), $preview, 1); |
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} |
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return $preview; |
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} |
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/** |
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* @param string $expression |
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* @param array $values |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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private static function previewNamed(string $expression, array $values): string |
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{ |
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$preview = $expression; |
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$keywords = []; |
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foreach ($values as $key => $value) { |
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if (!\in_array($key, $keywords, true)) { |
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$keywords[] = $key; |
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} |
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} |
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$nbPlaceholders = \preg_match_all('#:([a-zA-Z0-9_]+)#', $expression, $placeholders); |
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if ($nbPlaceholders > 0 && \count(\array_unique($placeholders[1])) !== \count($values)) { |
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throw new \InvalidArgumentException("Number of variables doesn't match number of parameters in statement"); |
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} |
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foreach ($keywords as $keyword) { |
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$pattern = "/(\:\b" . $keyword . "\b)/i"; |
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$preview = \preg_replace($pattern, self::escape($values[$keyword]), $preview); |
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} |
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return $preview; |
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} |
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/** |
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* @param $value |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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private static function escape($value) |
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{ |
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$type = \gettype($value); |
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switch ($type) { |
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case 'NULL': |
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return 'NULL'; |
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case 'boolean': |
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return $value ? 'TRUE' : 'FALSE'; |
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case 'double': |
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case 'integer': |
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return $value; |
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default: |
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return "'" . \addslashes(self::stringify($value)) . "'"; |
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} |
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} |
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/** |
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* @param $value |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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private static function stringify($value): string |
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{ |
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if (\is_scalar($value)) { |
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return (string) $value; |
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} |
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if (\is_object($value) && \is_callable([$value, '__toString'])) { |
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return (string) $value; |
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} |
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if ($value instanceof \DateTimeInterface) { |
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return $value->format('Y-m-d H:i:s'); |
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} |
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throw new \InvalidArgumentException(\sprintf('Expected string or stringable object, %s returned', \is_object($value) ? \get_class($value) : \gettype($value))); |
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} |
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/** |
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* @param array $array |
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* @return bool |
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*/ |
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private static function isSequentialArray(array $array): bool |
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{ |
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return isset($array[0]) && \array_keys($array) === \range(0, \count($array) - 1); |
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} |
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} |
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bpolaszek /
where
