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Current File : //proc/self/root/home/vmanager/www/vendor/google/apiclient/src/Http/Batch.php
<?php
/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Google\Http;

use Google\Client;
use Google\Service\Exception as GoogleServiceException;
use GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Psr7\Response;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;

/**
 * Class to handle batched requests to the Google API service.
 *
 * Note that calls to `Google\Http\Batch::execute()` do not clear the queued
 * requests. To start a new batch, be sure to create a new instance of this
 * class.
 */
class Batch
{
    const BATCH_PATH = 'batch';

    private static $CONNECTION_ESTABLISHED_HEADERS = [
        "HTTP/1.0 200 Connection established\r\n\r\n",
        "HTTP/1.1 200 Connection established\r\n\r\n",
    ];

    /** @var string Multipart Boundary. */
    private $boundary;

    /** @var array service requests to be executed. */
    private $requests = [];

    /** @var Client */
    private $client;

    private $rootUrl;

    private $batchPath;

    public function __construct(
        Client $client,
        $boundary = false,
        $rootUrl = null,
        $batchPath = null
    ) {
        $this->client = $client;
        $this->boundary = $boundary ?: mt_rand();
        $this->rootUrl = rtrim($rootUrl ?: $this->client->getConfig('base_path'), '/');
        $this->batchPath = $batchPath ?: self::BATCH_PATH;
    }

    public function add(RequestInterface $request, $key = false)
    {
        if (false == $key) {
            $key = mt_rand();
        }

        $this->requests[$key] = $request;
    }

    public function execute()
    {
        $body = '';
        $classes = [];
        $batchHttpTemplate = <<<EOF
--%s
Content-Type: application/http
Content-Transfer-Encoding: binary
MIME-Version: 1.0
Content-ID: %s

%s
%s%s


EOF;

        /** @var RequestInterface $request */
        foreach ($this->requests as $key => $request) {
            $firstLine = sprintf(
                '%s %s HTTP/%s',
                $request->getMethod(),
                $request->getRequestTarget(),
                $request->getProtocolVersion()
            );

            $content = (string) $request->getBody();

            $headers = '';
            foreach ($request->getHeaders() as $name => $values) {
                $headers .= sprintf("%s:%s\r\n", $name, implode(', ', $values));
            }

            $body .= sprintf(
                $batchHttpTemplate,
                $this->boundary,
                $key,
                $firstLine,
                $headers,
                $content ? "\n" . $content : ''
            );

            $classes['response-' . $key] = $request->getHeaderLine('X-Php-Expected-Class');
        }

        $body .= "--{$this->boundary}--";
        $body = trim($body);
        $url = $this->rootUrl . '/' . $this->batchPath;
        $headers = [
            'Content-Type' => sprintf('multipart/mixed; boundary=%s', $this->boundary),
            'Content-Length' => (string) strlen($body),
        ];

        $request = new Request(
            'POST',
            $url,
            $headers,
            $body
        );

        $response = $this->client->execute($request);

        return $this->parseResponse($response, $classes);
    }

    public function parseResponse(ResponseInterface $response, $classes = [])
    {
        $contentType = $response->getHeaderLine('content-type');
        $contentType = explode(';', $contentType);
        $boundary = false;
        foreach ($contentType as $part) {
            $part = explode('=', $part, 2);
            if (isset($part[0]) && 'boundary' == trim($part[0])) {
                $boundary = $part[1];
            }
        }

        $body = (string) $response->getBody();
        if (!empty($body)) {
            $body = str_replace("--$boundary--", "--$boundary", $body);
            $parts = explode("--$boundary", $body);
            $responses = [];
            $requests = array_values($this->requests);

            foreach ($parts as $i => $part) {
                $part = trim($part);
                if (!empty($part)) {
                    list($rawHeaders, $part) = explode("\r\n\r\n", $part, 2);
                    $headers = $this->parseRawHeaders($rawHeaders);

                    $status = substr($part, 0, strpos($part, "\n"));
                    $status = explode(" ", $status);
                    $status = $status[1];

                    list($partHeaders, $partBody) = $this->parseHttpResponse($part, 0);
                    $response = new Response(
                        (int) $status,
                        $partHeaders,
                        Psr7\Utils::streamFor($partBody)
                    );

                    // Need content id.
                    $key = $headers['content-id'];

                    try {
                        $response = REST::decodeHttpResponse($response, $requests[$i-1]);
                    } catch (GoogleServiceException $e) {
                        // Store the exception as the response, so successful responses
                        // can be processed.
                        $response = $e;
                    }

                    $responses[$key] = $response;
                }
            }

            return $responses;
        }

        return null;
    }

    private function parseRawHeaders($rawHeaders)
    {
        $headers = [];
        $responseHeaderLines = explode("\r\n", $rawHeaders);
        foreach ($responseHeaderLines as $headerLine) {
            if ($headerLine && strpos($headerLine, ':') !== false) {
                list($header, $value) = explode(': ', $headerLine, 2);
                $header = strtolower($header);
                if (isset($headers[$header])) {
                    $headers[$header] = array_merge((array)$headers[$header], (array)$value);
                } else {
                    $headers[$header] = $value;
                }
            }
        }
        return $headers;
    }

    /**
     * Used by the IO lib and also the batch processing.
     *
     * @param string $respData
     * @param int $headerSize
     * @return array
     */
    private function parseHttpResponse($respData, $headerSize)
    {
        // check proxy header
        foreach (self::$CONNECTION_ESTABLISHED_HEADERS as $established_header) {
            if (stripos($respData, $established_header) !== false) {
                // existed, remove it
                $respData = str_ireplace($established_header, '', $respData);
                // Subtract the proxy header size unless the cURL bug prior to 7.30.0
                // is present which prevented the proxy header size from being taken into
                // account.
                // @TODO look into this
                // if (!$this->needsQuirk()) {
                //   $headerSize -= strlen($established_header);
                // }
                break;
            }
        }

        if ($headerSize) {
            $responseBody = substr($respData, $headerSize);
            $responseHeaders = substr($respData, 0, $headerSize);
        } else {
            $responseSegments = explode("\r\n\r\n", $respData, 2);
            $responseHeaders = $responseSegments[0];
            $responseBody = isset($responseSegments[1]) ? $responseSegments[1] : null;
        }

        $responseHeaders = $this->parseRawHeaders($responseHeaders);

        return [$responseHeaders, $responseBody];
    }
}
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