axmol/cocos/network/CCDownloader.cpp

/****************************************************************************
 Copyright (c) 2015-2016 cocos2d-x.org
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 Copyright (c) 2021 Bytedance Inc.

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 Permission is hereby granted, free of charge, to any person obtaining a copy
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

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 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "network/CCDownloader.h"

#include "network/CCDownloader-curl.h"
#define DownloaderImpl DownloaderCURL

namespace cocos2d
{
namespace network
{

DownloadTask::DownloadTask()
{
    DLLOG("Construct DownloadTask %p", this);
}

DownloadTask::DownloadTask(const std::string& srcUrl, const std::string& identifier)
{
    this->requestURL = srcUrl;
    this->identifier = identifier;
    this->background = false;
}

DownloadTask::DownloadTask(const std::string& srcUrl,
                           const std::string& storagePath,
                           const std::string& checksum,
                           const std::string& identifier,
                           bool background)
{
    this->requestURL  = srcUrl;
    this->storagePath = storagePath;
    this->checksum    = checksum;
    this->identifier  = identifier;
    this->background  = background;
}

DownloadTask::~DownloadTask()
{
    DLLOG("Destruct DownloadTask %p", this);
}

void DownloadTask::cancel()
{
    if (_coTask)
        _coTask->cancel();
}

////////////////////////////////////////////////////////////////////////////////
//  Implement Downloader
Downloader::Downloader() : Downloader(DownloaderHints{6, 45, ".tmp"}) {}

Downloader::Downloader(const DownloaderHints& hints)
{
    DLLOG("Construct Downloader %p", this);
    _impl.reset(new DownloaderImpl(hints));
    _impl->onTaskProgress = [this](const DownloadTask& task,
                                   std::function<int64_t(void* buffer, int64_t len)>& /*transferDataToBuffer*/) {
        if (onTaskProgress)
        {
            onTaskProgress(task);
        }
    };

    _impl->onTaskFinish = [this](const DownloadTask& task, int errorCode, int errorCodeInternal,
                                 const std::string& errorStr, std::vector<unsigned char>& data) {
        if (DownloadTask::ERROR_NO_ERROR != errorCode)
        {
            if (onTaskError)
            {
                onTaskError(task, errorCode, errorCodeInternal, errorStr);
            }
            return;
        }

        // success callback
        if (task.storagePath.length())
        {
            if (onFileTaskSuccess)
            {
                onFileTaskSuccess(task);
            }
        }
        else
        {
            // data task
            if (onDataTaskSuccess)
            {
                onDataTaskSuccess(task, data);
            }
        }
    };
}

Downloader::~Downloader()
{
    DLLOG("Destruct Downloader %p", this);
}

std::shared_ptr<DownloadTask> Downloader::createDownloadDataTask(const std::string& srcUrl,
                                                                 const std::string& identifier /* = ""*/)
{
    auto task = std::make_shared<DownloadTask>(srcUrl, identifier);

    do
    {
        if (srcUrl.empty())
        {
            if (onTaskError)
            {
                onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or is empty.");
            }
            task.reset();
            break;
        }
        _impl->startTask(task);
    } while (0);

    return task;
}

std::shared_ptr<DownloadTask> Downloader::createDownloadFileTask(const std::string& srcUrl,
                                                                 const std::string& storagePath,
                                                                 const std::string& identifier,
                                                                 const std::string& md5checksum,
                                                                 bool background)
{
    auto task = std::make_shared<DownloadTask>(srcUrl, storagePath, md5checksum, identifier, background);
    do
    {
        if (srcUrl.empty() || storagePath.empty())
        {
            if (onTaskError)
            {
                onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or storage path is empty.");
            }
            task.reset();
            break;
        }
        _impl->startTask(task);
    } while (0);

    return task;
}

// std::string Downloader::getFileNameFromUrl(const std::string& srcUrl)
//{
//    // Find file name and file extension
//    std::string filename;
//    unsigned int32_t found = srcUrl.find_last_of("/\\");
//    if (found != std::string::npos)
//        filename = srcUrl.substr(found+1);
//    return filename;
//}

}  // namespace network
}  // namespace cocos2d