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<?php
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namespace Aws\Api\Parser;
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use Aws\Api\DateTimeResult;
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use Aws\Api\ListShape;
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use Aws\Api\MapShape;
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use Aws\Api\Parser\Exception\ParserException;
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use Aws\Api\Shape;
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use Aws\Api\StructureShape;
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/**
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* @internal Implements standard XML parsing for REST-XML and Query protocols.
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*/
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class XmlParser
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{
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public function parse(StructureShape $shape, \SimpleXMLElement $value)
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{
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return $this->dispatch($shape, $value);
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}
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private function dispatch($shape, \SimpleXMLElement $value)
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{
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static $methods = [
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'structure' => 'parse_structure',
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'list' => 'parse_list',
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'map' => 'parse_map',
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'blob' => 'parse_blob',
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'boolean' => 'parse_boolean',
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'integer' => 'parse_integer',
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'float' => 'parse_float',
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'double' => 'parse_float',
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'timestamp' => 'parse_timestamp',
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];
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$type = $shape['type'];
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if (isset($methods[$type])) {
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return $this->{$methods[$type]}($shape, $value);
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}
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return (string) $value;
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}
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private function parse_structure(
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StructureShape $shape,
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\SimpleXMLElement $value
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) {
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$target = [];
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foreach ($shape->getMembers() as $name => $member) {
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// Extract the name of the XML node
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$node = $this->memberKey($member, $name);
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if (isset($value->{$node})) {
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$target[$name] = $this->dispatch($member, $value->{$node});
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} else {
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$memberShape = $shape->getMember($name);
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if (!empty($memberShape['xmlAttribute'])) {
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$target[$name] = $this->parse_xml_attribute(
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$shape,
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$memberShape,
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$value
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);
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}
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}
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}
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if (isset($shape['union'])
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&& $shape['union']
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&& empty($target)
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) {
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foreach ($value as $key => $val) {
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$name = $val->children()->getName();
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$target['Unknown'][$name] = $val->$name;
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}
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}
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return $target;
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}
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private function memberKey(Shape $shape, $name)
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{
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if (null !== $shape['locationName']) {
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return $shape['locationName'];
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}
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if ($shape instanceof ListShape && $shape['flattened']) {
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return $shape->getMember()['locationName'] ?: $name;
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}
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return $name;
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}
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private function parse_list(ListShape $shape, \SimpleXMLElement $value)
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{
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$target = [];
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$member = $shape->getMember();
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if (!$shape['flattened']) {
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$value = $value->{$member['locationName'] ?: 'member'};
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}
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foreach ($value as $v) {
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$target[] = $this->dispatch($member, $v);
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}
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return $target;
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}
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private function parse_map(MapShape $shape, \SimpleXMLElement $value)
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{
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$target = [];
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if (!$shape['flattened']) {
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$value = $value->entry;
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}
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$mapKey = $shape->getKey();
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$mapValue = $shape->getValue();
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$keyName = $shape->getKey()['locationName'] ?: 'key';
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$valueName = $shape->getValue()['locationName'] ?: 'value';
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foreach ($value as $node) {
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$key = $this->dispatch($mapKey, $node->{$keyName});
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$value = $this->dispatch($mapValue, $node->{$valueName});
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$target[$key] = $value;
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}
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return $target;
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}
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private function parse_blob(Shape $shape, $value)
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{
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return base64_decode((string) $value);
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}
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private function parse_float(Shape $shape, $value)
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{
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return (float) (string) $value;
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}
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private function parse_integer(Shape $shape, $value)
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{
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return (int) (string) $value;
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}
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private function parse_boolean(Shape $shape, $value)
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{
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return $value == 'true';
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}
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private function parse_timestamp(Shape $shape, $value)
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{
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if (is_string($value)
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|| is_int($value)
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|| (is_object($value)
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&& method_exists($value, '__toString'))
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) {
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return DateTimeResult::fromTimestamp(
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(string) $value,
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!empty($shape['timestampFormat']) ? $shape['timestampFormat'] : null
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);
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}
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throw new ParserException('Invalid timestamp value passed to XmlParser::parse_timestamp');
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}
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private function parse_xml_attribute(Shape $shape, Shape $memberShape, $value)
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{
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$namespace = $shape['xmlNamespace']['uri']
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? $shape['xmlNamespace']['uri']
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: '';
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$prefix = $shape['xmlNamespace']['prefix']
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? $shape['xmlNamespace']['prefix']
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: '';
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if (!empty($prefix)) {
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$prefix .= ':';
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}
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$key = str_replace($prefix, '', $memberShape['locationName']);
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$attributes = $value->attributes($namespace);
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return isset($attributes[$key]) ? (string) $attributes[$key] : null;
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}
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}
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