Gecko [ nrupathungauniversityblr.ac.in ]

Name	Size	Permission
ACMPCA	[ DIR ]	drwxr-xr-x
AccessAnalyzer	[ DIR ]	drwxr-xr-x
Acm	[ DIR ]	drwxr-xr-x
AlexaForBusiness	[ DIR ]	drwxr-xr-x
Amplify	[ DIR ]	drwxr-xr-x
Api	[ DIR ]	drwxr-xr-x
ApiGateway	[ DIR ]	drwxr-xr-x
ApiGatewayManagementApi	[ DIR ]	drwxr-xr-x
ApiGatewayV2	[ DIR ]	drwxr-xr-x
AppConfig	[ DIR ]	drwxr-xr-x
AppMesh	[ DIR ]	drwxr-xr-x
AppSync	[ DIR ]	drwxr-xr-x
ApplicationAutoScaling	[ DIR ]	drwxr-xr-x
ApplicationDiscoveryService	[ DIR ]	drwxr-xr-x
ApplicationInsights	[ DIR ]	drwxr-xr-x
Appstream	[ DIR ]	drwxr-xr-x
Arn	[ DIR ]	drwxr-xr-x
Athena	[ DIR ]	drwxr-xr-x
AugmentedAIRuntime	[ DIR ]	drwxr-xr-x
AutoScaling	[ DIR ]	drwxr-xr-x
AutoScalingPlans	[ DIR ]	drwxr-xr-x
Backup	[ DIR ]	drwxr-xr-x
Batch	[ DIR ]	drwxr-xr-x
Budgets	[ DIR ]	drwxr-xr-x
Chime	[ DIR ]	drwxr-xr-x
ClientSideMonitoring	[ DIR ]	drwxr-xr-x
Cloud9	[ DIR ]	drwxr-xr-x
CloudDirectory	[ DIR ]	drwxr-xr-x
CloudFormation	[ DIR ]	drwxr-xr-x
CloudFront	[ DIR ]	drwxr-xr-x
CloudHSMV2	[ DIR ]	drwxr-xr-x
CloudHsm	[ DIR ]	drwxr-xr-x
CloudSearch	[ DIR ]	drwxr-xr-x
CloudSearchDomain	[ DIR ]	drwxr-xr-x
CloudTrail	[ DIR ]	drwxr-xr-x
CloudWatch	[ DIR ]	drwxr-xr-x
CloudWatchEvents	[ DIR ]	drwxr-xr-x
CloudWatchLogs	[ DIR ]	drwxr-xr-x
CodeBuild	[ DIR ]	drwxr-xr-x
CodeCommit	[ DIR ]	drwxr-xr-x
CodeDeploy	[ DIR ]	drwxr-xr-x
CodeGuruProfiler	[ DIR ]	drwxr-xr-x
CodeGuruReviewer	[ DIR ]	drwxr-xr-x
CodePipeline	[ DIR ]	drwxr-xr-x
CodeStar	[ DIR ]	drwxr-xr-x
CodeStarNotifications	[ DIR ]	drwxr-xr-x
CodeStarconnections	[ DIR ]	drwxr-xr-x
CognitoIdentity	[ DIR ]	drwxr-xr-x
CognitoIdentityProvider	[ DIR ]	drwxr-xr-x
CognitoSync	[ DIR ]	drwxr-xr-x
Comprehend	[ DIR ]	drwxr-xr-x
ComprehendMedical	[ DIR ]	drwxr-xr-x
ComputeOptimizer	[ DIR ]	drwxr-xr-x
ConfigService	[ DIR ]	drwxr-xr-x
Connect	[ DIR ]	drwxr-xr-x
ConnectParticipant	[ DIR ]	drwxr-xr-x
CostExplorer	[ DIR ]	drwxr-xr-x
CostandUsageReportService	[ DIR ]	drwxr-xr-x
Credentials	[ DIR ]	drwxr-xr-x
Crypto	[ DIR ]	drwxr-xr-x
DAX	[ DIR ]	drwxr-xr-x
DLM	[ DIR ]	drwxr-xr-x
DataExchange	[ DIR ]	drwxr-xr-x
DataPipeline	[ DIR ]	drwxr-xr-x
DataSync	[ DIR ]	drwxr-xr-x
DatabaseMigrationService	[ DIR ]	drwxr-xr-x
Detective	[ DIR ]	drwxr-xr-x
DeviceFarm	[ DIR ]	drwxr-xr-x
DirectConnect	[ DIR ]	drwxr-xr-x
DirectoryService	[ DIR ]	drwxr-xr-x
DocDB	[ DIR ]	drwxr-xr-x
DynamoDb	[ DIR ]	drwxr-xr-x
DynamoDbStreams	[ DIR ]	drwxr-xr-x
EBS	[ DIR ]	drwxr-xr-x
EC2InstanceConnect	[ DIR ]	drwxr-xr-x
EKS	[ DIR ]	drwxr-xr-x
Ec2	[ DIR ]	drwxr-xr-x
Ecr	[ DIR ]	drwxr-xr-x
Ecs	[ DIR ]	drwxr-xr-x
Efs	[ DIR ]	drwxr-xr-x
ElastiCache	[ DIR ]	drwxr-xr-x
ElasticBeanstalk	[ DIR ]	drwxr-xr-x
ElasticInference	[ DIR ]	drwxr-xr-x
ElasticLoadBalancing	[ DIR ]	drwxr-xr-x
ElasticLoadBalancingV2	[ DIR ]	drwxr-xr-x
ElasticTranscoder	[ DIR ]	drwxr-xr-x
ElasticsearchService	[ DIR ]	drwxr-xr-x
Emr	[ DIR ]	drwxr-xr-x
Endpoint	[ DIR ]	drwxr-xr-x
EndpointDiscovery	[ DIR ]	drwxr-xr-x
EventBridge	[ DIR ]	drwxr-xr-x
Exception	[ DIR ]	drwxr-xr-x
FMS	[ DIR ]	drwxr-xr-x
FSx	[ DIR ]	drwxr-xr-x
Firehose	[ DIR ]	drwxr-xr-x
ForecastQueryService	[ DIR ]	drwxr-xr-x
ForecastService	[ DIR ]	drwxr-xr-x
FraudDetector	[ DIR ]	drwxr-xr-x
GameLift	[ DIR ]	drwxr-xr-x
Glacier	[ DIR ]	drwxr-xr-x
GlobalAccelerator	[ DIR ]	drwxr-xr-x
Glue	[ DIR ]	drwxr-xr-x
Greengrass	[ DIR ]	drwxr-xr-x
GroundStation	[ DIR ]	drwxr-xr-x
GuardDuty	[ DIR ]	drwxr-xr-x
Handler	[ DIR ]	drwxr-xr-x
Health	[ DIR ]	drwxr-xr-x
Iam	[ DIR ]	drwxr-xr-x
ImportExport	[ DIR ]	drwxr-xr-x
Inspector	[ DIR ]	drwxr-xr-x
IoT1ClickDevicesService	[ DIR ]	drwxr-xr-x
IoT1ClickProjects	[ DIR ]	drwxr-xr-x
IoTAnalytics	[ DIR ]	drwxr-xr-x
IoTEvents	[ DIR ]	drwxr-xr-x
IoTEventsData	[ DIR ]	drwxr-xr-x
IoTJobsDataPlane	[ DIR ]	drwxr-xr-x
IoTSecureTunneling	[ DIR ]	drwxr-xr-x
IoTThingsGraph	[ DIR ]	drwxr-xr-x
Iot	[ DIR ]	drwxr-xr-x
IotDataPlane	[ DIR ]	drwxr-xr-x
Kafka	[ DIR ]	drwxr-xr-x
Kinesis	[ DIR ]	drwxr-xr-x
KinesisAnalytics	[ DIR ]	drwxr-xr-x
KinesisAnalyticsV2	[ DIR ]	drwxr-xr-x
KinesisVideo	[ DIR ]	drwxr-xr-x
KinesisVideoArchivedMedia	[ DIR ]	drwxr-xr-x
KinesisVideoMedia	[ DIR ]	drwxr-xr-x
KinesisVideoSignalingChannels	[ DIR ]	drwxr-xr-x
Kms	[ DIR ]	drwxr-xr-x
LakeFormation	[ DIR ]	drwxr-xr-x
Lambda	[ DIR ]	drwxr-xr-x
LexModelBuildingService	[ DIR ]	drwxr-xr-x
LexRuntimeService	[ DIR ]	drwxr-xr-x
LicenseManager	[ DIR ]	drwxr-xr-x
Lightsail	[ DIR ]	drwxr-xr-x
MQ	[ DIR ]	drwxr-xr-x
MTurk	[ DIR ]	drwxr-xr-x
MachineLearning	[ DIR ]	drwxr-xr-x
Macie	[ DIR ]	drwxr-xr-x
ManagedBlockchain	[ DIR ]	drwxr-xr-x
MarketplaceCatalog	[ DIR ]	drwxr-xr-x
MarketplaceCommerceAnalytics	[ DIR ]	drwxr-xr-x
MarketplaceEntitlementService	[ DIR ]	drwxr-xr-x
MarketplaceMetering	[ DIR ]	drwxr-xr-x
MediaConnect	[ DIR ]	drwxr-xr-x
MediaConvert	[ DIR ]	drwxr-xr-x
MediaLive	[ DIR ]	drwxr-xr-x
MediaPackage	[ DIR ]	drwxr-xr-x
MediaPackageVod	[ DIR ]	drwxr-xr-x
MediaStore	[ DIR ]	drwxr-xr-x
MediaStoreData	[ DIR ]	drwxr-xr-x
MediaTailor	[ DIR ]	drwxr-xr-x
MigrationHub	[ DIR ]	drwxr-xr-x
MigrationHubConfig	[ DIR ]	drwxr-xr-x
Mobile	[ DIR ]	drwxr-xr-x
Multipart	[ DIR ]	drwxr-xr-x
Neptune	[ DIR ]	drwxr-xr-x
NetworkManager	[ DIR ]	drwxr-xr-x
OpsWorks	[ DIR ]	drwxr-xr-x
OpsWorksCM	[ DIR ]	drwxr-xr-x
Organizations	[ DIR ]	drwxr-xr-x
Outposts	[ DIR ]	drwxr-xr-x
PI	[ DIR ]	drwxr-xr-x
Personalize	[ DIR ]	drwxr-xr-x
PersonalizeEvents	[ DIR ]	drwxr-xr-x
PersonalizeRuntime	[ DIR ]	drwxr-xr-x
Pinpoint	[ DIR ]	drwxr-xr-x
PinpointEmail	[ DIR ]	drwxr-xr-x
PinpointSMSVoice	[ DIR ]	drwxr-xr-x
Polly	[ DIR ]	drwxr-xr-x
Pricing	[ DIR ]	drwxr-xr-x
QLDB	[ DIR ]	drwxr-xr-x
QLDBSession	[ DIR ]	drwxr-xr-x
QuickSight	[ DIR ]	drwxr-xr-x
RAM	[ DIR ]	drwxr-xr-x
RDSDataService	[ DIR ]	drwxr-xr-x
Rds	[ DIR ]	drwxr-xr-x
Redshift	[ DIR ]	drwxr-xr-x
Rekognition	[ DIR ]	drwxr-xr-x
ResourceGroups	[ DIR ]	drwxr-xr-x
ResourceGroupsTaggingAPI	[ DIR ]	drwxr-xr-x
RoboMaker	[ DIR ]	drwxr-xr-x
Route53	[ DIR ]	drwxr-xr-x
Route53Domains	[ DIR ]	drwxr-xr-x
Route53Resolver	[ DIR ]	drwxr-xr-x
S3	[ DIR ]	drwxr-xr-x
S3Control	[ DIR ]	drwxr-xr-x
SSO	[ DIR ]	drwxr-xr-x
SSOOIDC	[ DIR ]	drwxr-xr-x
SageMaker	[ DIR ]	drwxr-xr-x
SageMakerRuntime	[ DIR ]	drwxr-xr-x
SavingsPlans	[ DIR ]	drwxr-xr-x
Schemas	[ DIR ]	drwxr-xr-x
SecretsManager	[ DIR ]	drwxr-xr-x
SecurityHub	[ DIR ]	drwxr-xr-x
ServerlessApplicationRepositor...	[ DIR ]	drwxr-xr-x
ServiceCatalog	[ DIR ]	drwxr-xr-x
ServiceDiscovery	[ DIR ]	drwxr-xr-x
ServiceQuotas	[ DIR ]	drwxr-xr-x
Ses	[ DIR ]	drwxr-xr-x
SesV2	[ DIR ]	drwxr-xr-x
Sfn	[ DIR ]	drwxr-xr-x
Shield	[ DIR ]	drwxr-xr-x
Signature	[ DIR ]	drwxr-xr-x
Sms	[ DIR ]	drwxr-xr-x
SnowBall	[ DIR ]	drwxr-xr-x
Sns	[ DIR ]	drwxr-xr-x
Sqs	[ DIR ]	drwxr-xr-x
Ssm	[ DIR ]	drwxr-xr-x
StorageGateway	[ DIR ]	drwxr-xr-x
Sts	[ DIR ]	drwxr-xr-x
Support	[ DIR ]	drwxr-xr-x
Swf	[ DIR ]	drwxr-xr-x
Textract	[ DIR ]	drwxr-xr-x
TranscribeService	[ DIR ]	drwxr-xr-x
Transfer	[ DIR ]	drwxr-xr-x
Translate	[ DIR ]	drwxr-xr-x
WAFV2	[ DIR ]	drwxr-xr-x
Waf	[ DIR ]	drwxr-xr-x
WafRegional	[ DIR ]	drwxr-xr-x
WorkDocs	[ DIR ]	drwxr-xr-x
WorkLink	[ DIR ]	drwxr-xr-x
WorkMail	[ DIR ]	drwxr-xr-x
WorkMailMessageFlow	[ DIR ]	drwxr-xr-x
WorkSpaces	[ DIR ]	drwxr-xr-x
XRay	[ DIR ]	drwxr-xr-x
data	[ DIR ]	drwxr-xr-x
imagebuilder	[ DIR ]	drwxr-xr-x
kendra	[ DIR ]	drwxr-xr-x
signer	[ DIR ]	drwxr-xr-x
AbstractConfigurationProvider....	4.46 KB	-rwxr-xr-x
AwsClient.php	16.58 KB	-rwxr-xr-x
AwsClientInterface.php	5.4 KB	-rwxr-xr-x
AwsClientTrait.php	2.67 KB	-rwxr-xr-x
CacheInterface.php	755 B	-rwxr-xr-x
ClientResolver.php	33.58 KB	-rwxr-xr-x
Command.php	1.39 KB	-rwxr-xr-x
CommandInterface.php	946 B	-rwxr-xr-x
CommandPool.php	5.2 KB	-rwxr-xr-x
ConfigurationProviderInterface...	246 B	-rwxr-xr-x
DoctrineCacheAdapter.php	989 B	-rwxr-xr-x
EndpointParameterMiddleware.ph...	2.73 KB	-rwxr-xr-x
HandlerList.php	13.18 KB	-rwxr-xr-x
HasDataTrait.php	1.11 KB	-rwxr-xr-x
HasMonitoringEventsTrait.php	869 B	-rwxr-xr-x
HashInterface.php	531 B	-rwxr-xr-x
HashingStream.php	1.5 KB	-rwxr-xr-x
History.php	3.81 KB	-rwxr-xr-x
IdempotencyTokenMiddleware.php	3.69 KB	-rwxr-xr-x
JsonCompiler.php	478 B	-rwxr-xr-x
LruArrayCache.php	2.16 KB	-rwxr-xr-x
Middleware.php	12.76 KB	-rwxr-xr-x
MockHandler.php	4.02 KB	-rwxr-xr-x
MonitoringEventsInterface.php	742 B	-rwxr-xr-x
MultiRegionClient.php	7.75 KB	-rwxr-xr-x
PhpHash.php	1.81 KB	-rwxr-xr-x
PresignUrlMiddleware.php	3.28 KB	-rwxr-xr-x
Psr16CacheAdapter.php	572 B	-rwxr-xr-x
PsrCacheAdapter.php	742 B	-rwxr-xr-x
ResponseContainerInterface.php	246 B	-rwxr-xr-x
Result.php	1.14 KB	-rwxr-xr-x
ResultInterface.php	1.34 KB	-rwxr-xr-x
ResultPaginator.php	5.09 KB	-rwxr-xr-x
RetryMiddleware.php	9.99 KB	-rwxr-xr-x
Sdk.php	38.45 KB	-rwxr-xr-x
StreamRequestPayloadMiddleware...	2.57 KB	-rwxr-xr-x
TraceMiddleware.php	10.72 KB	-rwxr-xr-x
Waiter.php	8.32 KB	-rwxr-xr-x
WrappedHttpHandler.php	6.96 KB	-rwxr-xr-x
functions.php	12.6 KB	-rwxr-xr-x

Code Editor : functions.php

<?php
namespace Aws;

use GuzzleHttp\Client;
use Psr\Http\Message\RequestInterface;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Promise\FulfilledPromise;

//-----------------------------------------------------------------------------
// Functional functions
//-----------------------------------------------------------------------------

/**
 * Returns a function that always returns the same value;
 *
 * @param mixed $value Value to return.
 *
 * @return callable
 */
function constantly($value)
{
    return function () use ($value) { return $value; };
}

/**
 * Filters values that do not satisfy the predicate function $pred.
 *
 * @param mixed    $iterable Iterable sequence of data.
 * @param callable $pred Function that accepts a value and returns true/false
 *
 * @return \Generator
 */
function filter($iterable, callable $pred)
{
    foreach ($iterable as $value) {
        if ($pred($value)) {
            yield $value;
        }
    }
}

/**
 * Applies a map function $f to each value in a collection.
 *
 * @param mixed    $iterable Iterable sequence of data.
 * @param callable $f        Map function to apply.
 *
 * @return \Generator
 */
function map($iterable, callable $f)
{
    foreach ($iterable as $value) {
        yield $f($value);
    }
}

/**
 * Creates a generator that iterates over a sequence, then iterates over each
 * value in the sequence and yields the application of the map function to each
 * value.
 *
 * @param mixed    $iterable Iterable sequence of data.
 * @param callable $f        Map function to apply.
 *
 * @return \Generator
 */
function flatmap($iterable, callable $f)
{
    foreach (map($iterable, $f) as $outer) {
        foreach ($outer as $inner) {
            yield $inner;
        }
    }
}

/**
 * Partitions the input sequence into partitions of the specified size.
 *
 * @param mixed    $iterable Iterable sequence of data.
 * @param int $size Size to make each partition (except possibly the last chunk)
 *
 * @return \Generator
 */
function partition($iterable, $size)
{
    $buffer = [];
    foreach ($iterable as $value) {
        $buffer[] = $value;
        if (count($buffer) === $size) {
            yield $buffer;
            $buffer = [];
        }
    }

if ($buffer) {
        yield $buffer;
    }
}

/**
 * Returns a function that invokes the provided variadic functions one
 * after the other until one of the functions returns a non-null value.
 * The return function will call each passed function with any arguments it
 * is provided.
 *
 *     $a = function ($x, $y) { return null; };
 *     $b = function ($x, $y) { return $x + $y; };
 *     $fn = \Aws\or_chain($a, $b);
 *     echo $fn(1, 2); // 3
 *
 * @return callable
 */
function or_chain()
{
    $fns = func_get_args();
    return function () use ($fns) {
        $args = func_get_args();
        foreach ($fns as $fn) {
            $result = $args ? call_user_func_array($fn, $args) : $fn();
            if ($result) {
                return $result;
            }
        }
        return null;
    };
}

//-----------------------------------------------------------------------------
// JSON compiler and loading functions
//-----------------------------------------------------------------------------

/**
 * Loads a compiled JSON file from a PHP file.
 *
 * If the JSON file has not been cached to disk as a PHP file, it will be loaded
 * from the JSON source file and returned.
 *
 * @param string $path Path to the JSON file on disk
 *
 * @return mixed Returns the JSON decoded data. Note that JSON objects are
 *     decoded as associative arrays.
 */
function load_compiled_json($path)
{
    static $compiledList = [];

$compiledFilepath = "{$path}.php";

if (!isset($compiledList[$compiledFilepath])) {
        if (is_readable($compiledFilepath)) {
            $compiledList[$compiledFilepath] = include($compiledFilepath);
        }
    }

if (isset($compiledList[$compiledFilepath])) {
        return $compiledList[$compiledFilepath];
    }

if (!file_exists($path)) {
        throw new \InvalidArgumentException(
            sprintf("File not found: %s", $path)
        );
    }

return json_decode(file_get_contents($path), true);
}

/**
 * No-op
 */
function clear_compiled_json()
{
    // pass
}

//-----------------------------------------------------------------------------
// Directory iterator functions.
//-----------------------------------------------------------------------------

/**
 * Iterates over the files in a directory and works with custom wrappers.
 *
 * @param string   $path Path to open (e.g., "s3://foo/bar").
 * @param resource $context Stream wrapper context.
 *
 * @return \Generator Yields relative filename strings.
 */
function dir_iterator($path, $context = null)
{
    $dh = $context ? opendir($path, $context) : opendir($path);
    if (!$dh) {
        throw new \InvalidArgumentException('File not found: ' . $path);
    }
    while (($file = readdir($dh)) !== false) {
        yield $file;
    }
    closedir($dh);
}

/**
 * Returns a recursive directory iterator that yields absolute filenames.
 *
 * This iterator is not broken like PHP's built-in DirectoryIterator (which
 * will read the first file from a stream wrapper, then rewind, then read
 * it again).
 *
 * @param string   $path    Path to traverse (e.g., s3://bucket/key, /tmp)
 * @param resource $context Stream context options.
 *
 * @return \Generator Yields absolute filenames.
 */
function recursive_dir_iterator($path, $context = null)
{
    $invalid = ['.' => true, '..' => true];
    $pathLen = strlen($path) + 1;
    $iterator = dir_iterator($path, $context);
    $queue = [];
    do {
        while ($iterator->valid()) {
            $file = $iterator->current();
            $iterator->next();
            if (isset($invalid[basename($file)])) {
                continue;
            }
            $fullPath = "{$path}/{$file}";
            yield $fullPath;
            if (is_dir($fullPath)) {
                $queue[] = $iterator;
                $iterator = map(
                    dir_iterator($fullPath, $context),
                    function ($file) use ($fullPath, $pathLen) {
                        return substr("{$fullPath}/{$file}", $pathLen);
                    }
                );
                continue;
            }
        }
        $iterator = array_pop($queue);
    } while ($iterator);
}

//-----------------------------------------------------------------------------
// Misc. functions.
//-----------------------------------------------------------------------------

/**
 * Debug function used to describe the provided value type and class.
 *
 * @param mixed $input
 *
 * @return string Returns a string containing the type of the variable and
 *                if a class is provided, the class name.
 */
function describe_type($input)
{
    switch (gettype($input)) {
        case 'object':
            return 'object(' . get_class($input) . ')';
        case 'array':
            return 'array(' . count($input) . ')';
        default:
            ob_start();
            var_dump($input);
            // normalize float vs double
            return str_replace('double(', 'float(', rtrim(ob_get_clean()));
    }
}

/**
 * Creates a default HTTP handler based on the available clients.
 *
 * @return callable
 */
function default_http_handler()
{
    $version = guzzle_major_version();
    // If Guzzle 6 or 7 installed
    if ($version === 6 || $version === 7) {
        return new \Aws\Handler\GuzzleV6\GuzzleHandler();
    }

// If Guzzle 5 installed
    if ($version === 5) {
        return new \Aws\Handler\GuzzleV5\GuzzleHandler();
    }

throw new \RuntimeException('Unknown Guzzle version: ' . $version);
}

/**
 * Gets the default user agent string depending on the Guzzle version
 *
 * @return string
 */
function default_user_agent()
{
    $version = guzzle_major_version();
    // If Guzzle 6 or 7 installed
    if ($version === 6 || $version === 7) {
        return \GuzzleHttp\default_user_agent();
    }

// If Guzzle 5 installed
    if ($version === 5) {
        return \GuzzleHttp\Client::getDefaultUserAgent();
    }

throw new \RuntimeException('Unknown Guzzle version: ' . $version);
}

/**
 * Get the major version of guzzle that is installed.
 *
 * @internal This function is internal and should not be used outside aws/aws-sdk-php.
 * @return int
 * @throws \RuntimeException
 */
function guzzle_major_version()
{
    static $cache = null;
    if (null !== $cache) {
        return $cache;
    }

if (defined('\GuzzleHttp\ClientInterface::VERSION')) {
        $version = (string) ClientInterface::VERSION;
        if ($version[0] === '6') {
            return $cache = 6;
        }
        if ($version[0] === '5') {
            return $cache = 5;
        }
    } elseif (method_exists(Client::class, 'sendRequest')) {
        return $cache = 7;
    }

throw new \RuntimeException('Unable to determine what Guzzle version is installed.');
}

/**
 * Serialize a request for a command but do not send it.
 *
 * Returns a promise that is fulfilled with the serialized request.
 *
 * @param CommandInterface $command Command to serialize.
 *
 * @return RequestInterface
 * @throws \RuntimeException
 */
function serialize(CommandInterface $command)
{
    $request = null;
    $handlerList = $command->getHandlerList();

// Return a mock result.
    $handlerList->setHandler(
        function (CommandInterface $_, RequestInterface $r) use (&$request) {
            $request = $r;
            return new FulfilledPromise(new Result([]));
        }
    );

call_user_func($handlerList->resolve(), $command)->wait();
    if (!$request instanceof RequestInterface) {
        throw new \RuntimeException(
            'Calling handler did not serialize request'
        );
    }

return $request;
}

/**
 * Retrieves data for a service from the SDK's service manifest file.
 *
 * Manifest data is stored statically, so it does not need to be loaded more
 * than once per process. The JSON data is also cached in opcache.
 *
 * @param string $service Case-insensitive namespace or endpoint prefix of the
 *                        service for which you are retrieving manifest data.
 *
 * @return array
 * @throws \InvalidArgumentException if the service is not supported.
 */
function manifest($service = null)
{
    // Load the manifest and create aliases for lowercased namespaces
    static $manifest = [];
    static $aliases = [];
    if (empty($manifest)) {
        $manifest = load_compiled_json(__DIR__ . '/data/manifest.json');
        foreach ($manifest as $endpoint => $info) {
            $alias = strtolower($info['namespace']);
            if ($alias !== $endpoint) {
                $aliases[$alias] = $endpoint;
            }
        }
    }

// If no service specified, then return the whole manifest.
    if ($service === null) {
        return $manifest;
    }

// Look up the service's info in the manifest data.
    $service = strtolower($service);
    if (isset($manifest[$service])) {
        return $manifest[$service] + ['endpoint' => $service];
    }

if (isset($aliases[$service])) {
        return manifest($aliases[$service]);
    }

throw new \InvalidArgumentException(
        "The service \"{$service}\" is not provided by the AWS SDK for PHP."
    );
}

/**
 * Checks if supplied parameter is a valid hostname
 *
 * @param string $hostname
 * @return bool
 */
function is_valid_hostname($hostname)
{
    return (
        preg_match("/^([a-z\d](-*[a-z\d])*)(\.([a-z\d](-*[a-z\d])*))*\.?$/i", $hostname)
        && preg_match("/^.{1,253}$/", $hostname)
        && preg_match("/^[^\.]{1,63}(\.[^\.]{0,63})*$/", $hostname)
    );
}

/**
 * Ignores '#' full line comments, which parse_ini_file no longer does
 * in PHP 7+.
 *
 * @param $filename
 * @param bool $process_sections
 * @param int $scanner_mode
 * @return array|bool
 */
function parse_ini_file(
    $filename,
    $process_sections = false,
    $scanner_mode = INI_SCANNER_NORMAL)
{
    return parse_ini_string(
        preg_replace('/^#.*\\n/m', "", file_get_contents($filename)),
        $process_sections,
        $scanner_mode
    );
}

/**
 * Outputs boolean value of input for a select range of possible values,
 * null otherwise
 *
 * @param $input
 * @return bool|null
 */
function boolean_value($input)
{
    if (is_bool($input)) {
        return $input;
    }

if ($input === 0) {
        return false;
    }

if ($input === 1) {
        return true;
    }

if (is_string($input)) {
        switch (strtolower($input)) {
            case "true":
            case "on":
            case "1":
                return true;
                break;

case "false":
            case "off":
            case "0":
                return false;
                break;
        }
    }
    return null;
}

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