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<?php |
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namespace Swaggest\JsonDiff; |
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class JsonHash |
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{ |
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private $options = 0; |
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public function __construct($options = 0) |
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{ |
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$this->options = $options; |
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} |
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/** |
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* @param mixed $data |
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* @param string $path |
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* @return string |
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*/ |
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public function xorHash($data, $path = '') |
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{ |
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$xorHash = ''; |
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if (!$data instanceof \stdClass && !is_array($data)) { |
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$s = $path . (string)$data; |
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if (strlen($xorHash) < strlen($s)) { |
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$xorHash = str_pad($xorHash, strlen($s)); |
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} |
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$xorHash ^= $s; |
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return $xorHash; |
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} |
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if ($this->options & JsonDiff::TOLERATE_ASSOCIATIVE_ARRAYS) { |
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if (is_array($data) && !empty($data) && !array_key_exists(0, $data)) { |
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$data = (object)$data; |
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} |
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} |
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if (is_array($data)) { |
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if ($this->options & JsonDiff::REARRANGE_ARRAYS) { |
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foreach ($data as $key => $item) { |
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$itemPath = $path . '/' . $key; |
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$itemHash = $path . $this->xorHash($item, $itemPath); |
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if (strlen($xorHash) < strlen($itemHash)) { |
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$xorHash = str_pad($xorHash, strlen($itemHash)); |
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} |
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$xorHash ^= $itemHash; |
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} |
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} else { |
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foreach ($data as $key => $item) { |
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$itemPath = $path . '/' . $key; |
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$itemHash = md5($itemPath . $this->xorHash($item, $itemPath), true); |
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if (strlen($xorHash) < strlen($itemHash)) { |
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$xorHash = str_pad($xorHash, strlen($itemHash)); |
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} |
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$xorHash ^= $itemHash; |
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} |
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} |
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return $xorHash; |
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} |
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$dataKeys = get_object_vars($data); |
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foreach ($dataKeys as $key => $value) { |
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$propertyPath = $path . '/' . |
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JsonPointer::escapeSegment($key, (bool)($this->options & JsonDiff::JSON_URI_FRAGMENT_ID)); |
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$propertyHash = $propertyPath . $this->xorHash($value, $propertyPath); |
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if (strlen($xorHash) < strlen($propertyHash)) { |
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$xorHash = str_pad($xorHash, strlen($propertyHash)); |
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} |
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$xorHash ^= $propertyHash; |
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} |
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return $xorHash; |
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} |
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} |
swaggest /
json-diff
