axmol/cocos/network/CCDownloader.cpp

/****************************************************************************
 Copyright (c) 2013 cocos2d-x.org
 
 http://www.cocos2d-x.org
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
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 all copies or substantial portions of the Software.
 
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 ****************************************************************************/

#include "network/CCDownloader.h"

// include platform specific implement class
#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)

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

#elif (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)

#include "network/CCDownloader-apple.h"
#define DownloaderImpl  DownloaderApple

#elif (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)

#include "network/CCDownloader-android.h"
#define DownloaderImpl  DownloaderAndroid

#else

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

#endif

namespace cocos2d { namespace network {

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

////////////////////////////////////////////////////////////////////////////////
//  Implement Downloader
    Downloader::Downloader()
    {
        DownloaderHints hints =
        {
            .countOfMaxProcessingTasks = 6,
            .timeoutInSeconds = 45,
            .tempFileNameSuffix = ".tmp"
        };
        new(this)Downloader(hints);
    }
    
    Downloader::Downloader(const DownloaderHints& hints)
    {
        DLLOG("Construct Downloader %p", this);
         _impl.reset(new DownloaderImpl(hints));
        _impl->onTaskProgress = [this](const DownloadTask& task,
                                       int64_t bytesReceived,
                                       int64_t totalBytesReceived,
                                       int64_t totalBytesExpected,
                                       std::function<int64_t(void *buffer, int64_t len)>& transferDataToBuffer)
        {
            if (onTaskProgress)
            {
                onTaskProgress(task, bytesReceived, totalBytesReceived, totalBytesExpected);
            }
        };
        
        _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<const DownloadTask> Downloader::createDownloadDataTask(const std::string& srcUrl, const std::string& identifier/* = ""*/)
    {
        DownloadTask *task_ = new DownloadTask();
        std::shared_ptr<const DownloadTask> task(task_);
        do
        {
            task_->requestURL    = srcUrl;
            task_->identifier    = identifier;
            if (0 == srcUrl.length())
            {
                if (onTaskError)
                {
                    onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or is empty.");
                }
                task.reset();
                break;
            }
            task_->_coTask.reset(_impl->createCoTask(task));
        } while (0);
        
        return task;
    }
    
    std::shared_ptr<const DownloadTask> Downloader::createDownloadFileTask(const std::string& srcUrl,
                                                                           const std::string& storagePath,
                                                                           const std::string& identifier/* = ""*/)
    {
        DownloadTask *task_ = new DownloadTask();
        std::shared_ptr<const DownloadTask> task(task_);
        do
        {
            task_->requestURL    = srcUrl;
            task_->storagePath   = storagePath;
            task_->identifier    = identifier;
            if (0 == srcUrl.length() || 0 == storagePath.length())
            {
                if (onTaskError)
                {
                    onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or storage path is empty.");
                }
                task.reset();
                break;
            }
            task_->_coTask.reset(_impl->createCoTask(task));
        } while (0);

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

}}  //  namespace cocos2d::network