FileLoaderManager.cpp
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#include "FileLoaderManager.h"
#include <cstring>
#include "FileFormatManager.h"
#include "FileLoaderASCII.h"
#include "FileLoaderVOTable.h"
#include "FileLoaderNetCDF.h"
#include "FileLoaderCDF.h"
#include "../FrameManager/FrameManager.h"
#include "../Common/Toolbox.h"
using namespace TREPS::Common;
using namespace TREPS::FrameManager;
namespace TREPS
{
namespace File
{
FileLoaderManagerClass::FileLoaderManagerClass(void) : app(NULL), loader(NULL), errorMsg("")
{
this->app = ApplicationClass::getInstance();
}
FileLoaderManagerClass::~FileLoaderManagerClass(void)
{
if (this->loader != NULL)
{
this->loader->close();
delete this->loader;
this->loader = NULL;
}
}
bool FileLoaderManagerClass::init(const char *file_path)
{
this->errorMsg = "";
//detect file format
string formatsFile = this->app->getConf()->getFormatsFilePath();
if (formatsFile.compare("") == 0)
{
this->errorMsg = "Internal error - Cannot get files formats file path";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
//generate a file format manager to detect the file format
FileFormatManagerClass *formatMgr = new FileFormatManagerClass();
if (!formatMgr->init(formatsFile.c_str()))
{
this->errorMsg = "Cannot init file format manager";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
delete formatMgr;
return false;
}
//init the file loader in relation with the file format
t_FileFormat format = formatMgr->detectFileFormat(file_path);
delete formatMgr;
switch (format)
{
case FF_ASCII :
this->loader = new FileLoaderASCIIClass();
break;
case FF_VOTABLE :
this->loader = new FileLoaderVOTableClass();
break;
case FF_NETCDF :
this->loader = new FileLoaderNetCDFClass();
break;
case FF_CDF :
this->loader = new FileLoaderCDFClass();
break;
default :
this->errorMsg = "Unknown file format";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
//open the file
bool res = this->loader->open(file_path);
if (!res)
{
this->errorMsg = "Cannot open file";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
}
return res;
}
bool FileLoaderManagerClass::getInfo(t_FileInfo &info)
{
this->errorMsg = "";
if (!this->loader)
{
this->errorMsg = "Internal error - Cannot get file info. Loader not initialized.";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
if (!this->loader->isOpened())
{
this->errorMsg = "Internal error - Cannot get file info. File not open.";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
//get file structure information
bool res = this->loader->getInfo(info);
if (!res)
{
this->errorMsg = "Cannot get file info. Unable to load the file structure.";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
}
return res;
}
bool FileLoaderManagerClass::getData(int start, int limit, DataRecordListClass *data, int &total)
{
this->errorMsg = "";
data->clear();
if (!this->loader)
{
this->errorMsg = "Internal error - Cannot get file data. Loader not initialized!";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
if (!this->loader->isOpened())
{
this->errorMsg = "Internal error - Cannot get file data. File not open!";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
//get file data records
if (!this->loader->getData(start,limit,data,total))
{
this->errorMsg = "Cannot get file data. Unable to load the file structure";
LOG4CXX_ERROR(this->app->getLog()->getPtr(),this->errorMsg);
return false;
}
return true;
}
string FileLoaderManagerClass::getErrorMsg(void)
{
return this->errorMsg;
}
}
}