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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Spiral\Support; |
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use Spiral\Support\Exceptions\SerializeException; |
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use Spiral\Support\Serializer\DeclarationInterface; |
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/** |
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* Provides very simple api for serializing values. Attention, this is helper class, it's not |
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* intended for processing user input. |
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*/ |
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class Serializer |
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{ |
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/** |
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* Fixed 4 spaces indent. |
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*/ |
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const INDENT = DeclarationInterface::INDENT; |
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/** |
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* Serialize array. |
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* |
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* @param mixed $array |
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* |
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* @return string |
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*/ |
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public function serialize($array): string |
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{ |
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if (is_array($array)) { |
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return $this->packArray($array); |
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} |
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return $this->packValue($array); |
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} |
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/** |
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* @param array $array |
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* @param int $level |
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* |
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* @return string |
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*/ |
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protected function packArray(array $array, int $level = 0): string |
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{ |
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if ($array === []) { |
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return '[]'; |
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} |
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//Delimiters between rows and sub-arrays. |
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$subIndent = "\n" . str_repeat(self::INDENT, $level + 2); |
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$keyIndent = "\n" . str_repeat(self::INDENT, $level + 1); |
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//No keys for associated array |
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$associated = array_diff_key($array, array_keys(array_keys($array))); |
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$result = []; |
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$innerIndent = 0; |
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if (!empty($associated)) { |
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foreach ($array as $key => $value) { |
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//Based on biggest key length |
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$innerIndent = max(strlen(var_export($key, true)), $innerIndent); |
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} |
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} |
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foreach ($array as $key => $value) { |
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$prefix = ''; |
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if (!empty($associated)) { |
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//Key prefix |
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$prefix = str_pad( |
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var_export($key, true), |
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$innerIndent, ' ', |
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STR_PAD_RIGHT |
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) . " => "; |
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} |
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if (!is_array($value)) { |
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$result[] = $prefix . $this->packValue($value); |
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continue; |
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} |
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if ($value === []) { |
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$result[] = $prefix . "[]"; |
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continue; |
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} |
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$subArray = $this->packArray($value, $level + 1); |
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$result[] = $prefix . "[{$subIndent}" . $subArray . "{$keyIndent}]"; |
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} |
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if ($level !== 0) { |
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return $result ? join(",{$keyIndent}", $result) : ""; |
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} |
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return "[{$keyIndent}" . join(",{$keyIndent}", $result) . "\n]"; |
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} |
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/** |
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* Pack array key value into string. |
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* |
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* @param mixed $value |
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* |
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* @return string |
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* @throws SerializeException |
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*/ |
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protected function packValue($value): string |
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{ |
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if ($value instanceof DeclarationInterface) { |
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//No indentation here |
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return $value->render(); |
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} |
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if (is_null($value)) { |
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return "null"; |
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} |
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if (is_bool($value)) { |
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return ($value ? "true" : "false"); |
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} |
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if (is_object($value) && method_exists($value, '__set_state')) { |
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return var_export($value, true); |
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} |
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if (!is_string($value) && !is_numeric($value)) { |
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print_r($value); |
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throw new SerializeException("Unable to pack non scalar value"); |
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} |
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if (is_string($value) && class_exists($value)) { |
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$reflection = new \ReflectionClass($value); |
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return '\\' . $reflection->getName() . '::class'; |
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} |
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return var_export($value, true); |
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} |
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} |
spiral /
common
