<?php
namespace Aws\Api\Parser;
use Aws\Api\DateTimeResult;
use Aws\Api\Shape;
use Psr\Http\Message\ResponseInterface;
trait MetadataParserTrait
{
/**
* Extract a single header from the response into the result.
*/
protected function extractHeader(
$name,
Shape $shape,
ResponseInterface $response,
&$result
) {
$value = $response->getHeaderLine($shape['locationName'] ?: $name);
switch ($shape->getType()) {
case 'float':
case 'double':
$value = (float) $value;
break;
case 'long':
$value = (int) $value;
break;
case 'boolean':
$value = filter_var($value, FILTER_VALIDATE_BOOLEAN);
break;
case 'blob':
$value = base64_decode($value);
break;
case 'timestamp':
try {
$value = DateTimeResult::fromTimestamp(
$value,
!empty($shape['timestampFormat']) ? $shape['timestampFormat'] : null
);
break;
} catch (\Exception $e) {
// If the value cannot be parsed, then do not add it to the
// output structure.
return;
}
case 'string':
if ($shape['jsonvalue']) {
$value = $this->parseJson(base64_decode($value), $response);
}
break;
}
$result[$name] = $value;
}
/**
* Extract a map of headers with an optional prefix from the response.
*/
protected function extractHeaders(
$name,
Shape $shape,
ResponseInterface $response,
&$result
) {
// Check if the headers are prefixed by a location name
$result[$name] = [];
$prefix = $shape['locationName'];
$prefixLen = strlen($prefix);
foreach ($response->getHeaders() as $k => $values) {
if (!$prefixLen) {
$result[$name][$k] = implode(', ', $values);
} elseif (stripos($k, $prefix) === 0) {
$result[$name][substr($k, $prefixLen)] = implode(', ', $values);
}
}
}
/**
* Places the status code of the response into the result array.
*/
protected function extractStatus(
$name,
ResponseInterface $response,
array &$result
) {
$result[$name] = (int) $response->getStatusCode();
}
}