mirror of https://github.com/axmolengine/axmol.git
266 lines
11 KiB
C++
266 lines
11 KiB
C++
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/****************************************************************************
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Copyright (c) 2015-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "platform/FileUtils.h"
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#include "network/Downloader-emscripten.h"
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#include <emscripten.h>
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using namespace std;
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namespace ax { namespace network {
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static int sDownloaderCounter;
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struct DownloadTaskEmscripten : public IDownloadTask
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{
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explicit DownloadTaskEmscripten(unsigned int id_)
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:id(id_)
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,bytesReceived(0)
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,fetch(NULL)
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{
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DLLOG("Construct DownloadTaskEmscripten: %p", this);
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}
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virtual ~DownloadTaskEmscripten()
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{
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DLLOG("Destruct DownloadTaskEmscripten: %p", this);
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}
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int bytesReceived;
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unsigned int id;
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emscripten_fetch_t * fetch;
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shared_ptr<const DownloadTask> task; // reference to DownloadTask, when task finish, release
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};
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DownloaderEmscripten::DownloaderEmscripten(const DownloaderHints& hints)
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: _id(++sDownloaderCounter)
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, hints(hints)
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{
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DLLOG("Construct DownloaderEmscripten: %p", this);
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}
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DownloaderEmscripten::~DownloaderEmscripten()
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{
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DLLOG("Destruct DownloaderEmscripten: %p", this);
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for (auto iter = _taskMap.begin(); iter != _taskMap.end(); ++iter)
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{
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if(iter->second->fetch != NULL) {
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emscripten_fetch_close(iter->second->fetch);
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}
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}
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}
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void DownloaderEmscripten::startTask(std::shared_ptr<DownloadTask>& task)
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{
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emscripten_fetch_attr_t attr;
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emscripten_fetch_attr_init(&attr);
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strcpy(attr.requestMethod, "GET");
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attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_PERSIST_FILE;
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if(task->storagePath.length() == 0) {
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attr.onsuccess = DownloaderEmscripten::onDataLoad;
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}else{
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attr.onsuccess = DownloaderEmscripten::onLoad;
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}
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attr.onprogress = DownloaderEmscripten::onProgress;
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attr.onerror = DownloaderEmscripten::onError;
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attr.timeoutMSecs = this->hints.timeoutInSeconds * 1000;
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emscripten_fetch_t *fetch = emscripten_fetch(&attr, task->requestURL.c_str());
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fetch->userData = this;
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DownloadTaskEmscripten *coTask = new DownloadTaskEmscripten(fetch->id);
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coTask->task = task;
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DLLOG("DownloaderEmscripten::createCoTask id: %d", coTask->id);
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_taskMap.insert(make_pair(coTask->id, coTask));
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}
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void DownloaderEmscripten::onDataLoad(emscripten_fetch_t *fetch)
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{
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unsigned int taskId = fetch->id;
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uint64_t size = fetch->numBytes;
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DLLOG("DownloaderEmscripten::onDataLoad(taskId: %d, size: %d)", taskId, size);
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DownloaderEmscripten* downloader = reinterpret_cast<DownloaderEmscripten*>(fetch->userData);
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auto iter = downloader->_taskMap.find(taskId);
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if (downloader->_taskMap.end() == iter)
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{
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DLLOG("DownloaderEmscripten::onDataLoad can't find task with id: %i, size: %i", taskId, size);
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return;
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}
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DownloadTaskEmscripten *coTask = iter->second;
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std::vector<unsigned char> buf(reinterpret_cast<const uint8_t*>(fetch->data), reinterpret_cast<const uint8_t*>(fetch->data) + size);
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emscripten_fetch_close(fetch);
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coTask->fetch = fetch = NULL;
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downloader->_taskMap.erase(iter);
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downloader->onTaskFinish(*coTask->task,
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DownloadTask::ERROR_NO_ERROR,
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0,
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"",
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buf
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);
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coTask->task.reset();
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}
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void DownloaderEmscripten::onLoad(emscripten_fetch_t *fetch)
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{
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unsigned int taskId = fetch->id;
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uint64_t size = fetch->numBytes;
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DLLOG("DownloaderEmscripten::onLoad(taskId: %i, size: %i)", taskId, size);
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DownloaderEmscripten* downloader = reinterpret_cast<DownloaderEmscripten*>(fetch->userData);
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auto iter = downloader->_taskMap.find(taskId);
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if (downloader->_taskMap.end() == iter)
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{
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DLLOG("DownloaderEmscripten::onLoad can't find task with id: %i, size: %i", taskId, size);
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return;
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}
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DownloadTaskEmscripten *coTask = iter->second;
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vector<unsigned char> buf;
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downloader->_taskMap.erase(iter);
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string storagePath = coTask->task->storagePath;
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int errCode = DownloadTask::ERROR_NO_ERROR;
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int errCodeInternal = 0;
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string errDescription;
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do
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{
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auto util = FileUtils::getInstance();
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if (util->isFileExist(storagePath))
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{
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if (false == util->removeFile(storagePath))
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{
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errCode = DownloadTask::ERROR_REMOVE_FILE_FAILED;
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errCodeInternal = 0;
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errDescription = "Can't remove old file: ";
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errDescription.append(storagePath);
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break;
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}
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}
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string dir;
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size_t found = storagePath.find_last_of("/\\");
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if (found == string::npos)
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{
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errCode = DownloadTask::ERROR_INVALID_PARAMS;
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errCodeInternal = 0;
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errDescription = "Can't find dirname in storagePath.";
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break;
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}
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// ensure directory is exist
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dir = storagePath.substr(0, found + 1);
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if (false == util->isDirectoryExist(dir))
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{
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if (false == util->createDirectory(dir))
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{
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errCode = DownloadTask::ERROR_CREATE_DIR_FAILED;
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errCodeInternal = 0;
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errDescription = "Can't create dir:";
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errDescription.append(dir);
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break;
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}
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}
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// open file
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auto _fs = util->openFileStream(storagePath, FileStream::Mode::READ);
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if (!_fs)
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{
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errCode = DownloadTask::ERROR_OPEN_FILE_FAILED;
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errCodeInternal = 0;
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errDescription = "Can't open file:";
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errDescription.append(storagePath);
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break;
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}
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_fs->write(fetch->data, static_cast<unsigned int>(size));
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} while (0);
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emscripten_fetch_close(fetch);
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coTask->fetch = fetch = NULL;
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downloader->onTaskFinish(*coTask->task,
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errCode,
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errCodeInternal,
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errDescription,
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buf
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);
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coTask->task.reset();
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}
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void DownloaderEmscripten::onProgress(emscripten_fetch_t *fetch)
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{
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uint64_t dlTotal = fetch->totalBytes;
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uint64_t dlNow = fetch->dataOffset;
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unsigned int taskId = fetch->id;
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DLLOG("DownloaderEmscripten::onProgress(taskId: %i, dlnow: %d, dltotal: %d)", taskId, dlNow, dlTotal);
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DownloaderEmscripten* downloader = reinterpret_cast<DownloaderEmscripten*>(fetch->userData);
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auto iter = downloader->_taskMap.find(taskId);
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if (downloader->_taskMap.end() == iter)
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{
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DLLOG("DownloaderEmscripten::onProgress can't find task with id: %i", taskId);
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return;
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}
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if (dlTotal == 0) {
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DLLOG("DownloaderEmscripten::onProgress dlTotal unknown, usually caused by unknown content-length header %i", taskId);
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return;
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}
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DownloadTaskEmscripten *coTask = iter->second;
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function<int64_t(void*, int64_t)> transferDataToBuffer; // just a placeholder
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// int dl = dlNow - coTask->bytesReceived;
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coTask->bytesReceived = dlNow;
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downloader->onTaskProgress(*coTask->task, transferDataToBuffer);
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}
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void DownloaderEmscripten::onError(emscripten_fetch_t *fetch)
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{
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unsigned int taskId = fetch->id;
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DLLOG("DownloaderEmscripten::onLoad(taskId: %i)", taskId);
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DownloaderEmscripten* downloader = reinterpret_cast<DownloaderEmscripten*>(fetch->userData);
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auto iter = downloader->_taskMap.find(taskId);
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if (downloader->_taskMap.end() == iter)
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{
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emscripten_fetch_close(fetch);
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DLLOG("DownloaderEmscripten::onLoad can't find task with id: %i", taskId);
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return;
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}
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DownloadTaskEmscripten *coTask = iter->second;
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vector<unsigned char> buf;
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downloader->_taskMap.erase(iter);
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downloader->onTaskFinish(*coTask->task,
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DownloadTask::ERROR_IMPL_INTERNAL,
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fetch->status,
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fetch->statusText,
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buf
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);
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emscripten_fetch_close(fetch);
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coTask->fetch = fetch = NULL;
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coTask->task.reset();
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}
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}
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} // namespace cocos2d::network
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