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<?php |
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namespace Swaggest\JsonDiff; |
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use Swaggest\JsonDiff\JsonPatch\Add; |
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use Swaggest\JsonDiff\JsonPatch\Copy; |
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use Swaggest\JsonDiff\JsonPatch\Move; |
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use Swaggest\JsonDiff\JsonPatch\OpPath; |
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use Swaggest\JsonDiff\JsonPatch\OpPathFrom; |
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use Swaggest\JsonDiff\JsonPatch\OpPathValue; |
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use Swaggest\JsonDiff\JsonPatch\Remove; |
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use Swaggest\JsonDiff\JsonPatch\Replace; |
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use Swaggest\JsonDiff\JsonPatch\Test; |
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/** |
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* JSON Patch is specified in [RFC 6902](http://tools.ietf.org/html/rfc6902) from the IETF. |
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* |
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* Class JsonPatch |
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*/ |
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class JsonPatch implements \JsonSerializable |
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{ |
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/** @var OpPath[] */ |
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private $operations = array(); |
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/** |
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* @param array $data |
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* @return JsonPatch |
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* @throws Exception |
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*/ |
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public static function import($data) |
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{ |
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if (!is_array($data)) { |
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throw new Exception('Array expected in JsonPatch::import'); |
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} |
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$result = new JsonPatch(); |
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foreach ($data as $operation) { |
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/** @var OpPath|OpPathValue|OpPathFrom $operation */ |
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if (is_array($operation)) { |
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$operation = (object)$operation; |
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} |
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if (!isset($operation->op)) { |
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throw new Exception('Missing "op" in operation data'); |
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} |
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if (!isset($operation->path)) { |
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throw new Exception('Missing "path" in operation data'); |
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} |
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$op = null; |
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switch ($operation->op) { |
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case Add::OP: |
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$op = new Add(); |
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break; |
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case Copy::OP: |
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$op = new Copy(); |
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break; |
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case Move::OP: |
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$op = new Move(); |
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break; |
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case Remove::OP: |
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$op = new Remove(); |
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break; |
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case Replace::OP: |
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$op = new Replace(); |
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break; |
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case Test::OP: |
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$op = new Test(); |
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break; |
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default: |
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throw new Exception('Unknown "op": ' . $operation->op); |
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} |
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$op->path = $operation->path; |
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if ($op instanceof OpPathValue) { |
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if (!array_key_exists('value', (array)$operation)) { |
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throw new Exception('Missing "value" in operation data'); |
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} |
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$op->value = $operation->value; |
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} elseif ($op instanceof OpPathFrom) { |
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if (!isset($operation->from)) { |
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throw new Exception('Missing "from" in operation data'); |
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} |
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$op->from = $operation->from; |
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} |
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$result->operations[] = $op; |
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} |
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return $result; |
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} |
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public static function export(JsonPatch $patch) |
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{ |
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$result = array(); |
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foreach ($patch->operations as $operation) { |
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$result[] = (object)(array)$operation; |
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} |
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return $result; |
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} |
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public function op(OpPath $op) |
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{ |
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$this->operations[] = $op; |
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return $this; |
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} |
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public function jsonSerialize() |
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{ |
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return self::export($this); |
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} |
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/** |
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* @param $original |
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* @throws Exception |
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*/ |
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public function apply(&$original) |
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{ |
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foreach ($this->operations as $operation) { |
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$pathItems = JsonPointer::splitPath($operation->path); |
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switch (true) { |
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case $operation instanceof Add: |
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JsonPointer::add($original, $pathItems, $operation->value); |
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break; |
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case $operation instanceof Copy: |
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$fromItems = JsonPointer::splitPath($operation->from); |
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$value = JsonPointer::get($original, $fromItems); |
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JsonPointer::add($original, $pathItems, $value); |
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break; |
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case $operation instanceof Move: |
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$fromItems = JsonPointer::splitPath($operation->from); |
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$value = JsonPointer::get($original, $fromItems); |
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JsonPointer::add($original, $pathItems, $value); |
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JsonPointer::remove($original, $fromItems); |
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break; |
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case $operation instanceof Remove: |
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JsonPointer::remove($original, $pathItems); |
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break; |
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case $operation instanceof Replace: |
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JsonPointer::get($original, $pathItems); |
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JsonPointer::add($original, $pathItems, $operation->value); |
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break; |
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case $operation instanceof Test: |
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$value = JsonPointer::get($original, $pathItems); |
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$diff = new JsonDiff($operation->value, $value, |
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JsonDiff::STOP_ON_DIFF); |
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if ($diff->getDiffCnt() !== 0) { |
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throw new Exception('Test operation ' . json_encode($operation) . ' failed: ' . json_encode($value)); |
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} |
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break; |
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} |
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} |
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} |
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} |
swaggest /
json-diff
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