FileConfigurationInterface.cc

#include "otsdaq/ConfigurationInterface/FileConfigurationInterface.h"
#include <dirent.h>
#include <errno.h>
#include <iostream>
#include <set>

#include "otsdaq/ConfigurationInterface/ConfigurationHandler.h"
#include "otsdaq/Macros/CoutMacros.h"
#include "otsdaq/MessageFacility/MessageFacility.h"
#include "otsdaq/TableCore/TableBase.h"

using namespace ots;

//==============================================================================
void FileConfigurationInterface::fill(TableBase* configuration, TableVersion version) const { ConfigurationHandler::readXML(configuration, version); }

//==============================================================================
// findLatestVersion
//  return INVALID if no existing versions
TableVersion FileConfigurationInterface::findLatestVersion(const TableBase* configuration) const
{
    auto versions = getVersions(configuration);
    if(!versions.size())
        return TableVersion();  // return INVALID
    return *(versions.rbegin());
}

//==============================================================================
// save active configuration view to file
void FileConfigurationInterface::saveActiveVersion(const TableBase* configuration, bool /*overwrite*/) const { ConfigurationHandler::writeXML(configuration); }

//==============================================================================
std::set<TableVersion> FileConfigurationInterface::getVersions(const TableBase* configuration) const
{
    std::string configDir = ConfigurationHandler::getXMLDir(configuration);
    std::cout << __COUT_HDR_FL__ << "ConfigurationDir: " << configDir << std::endl;
    DIR* dp;

    struct dirent* dirp;

    if((dp = opendir(configDir.c_str())) == 0)
    {
        __SS__ << "ERROR:(" << errno << ").  Can't open directory: " << configDir << std::endl;
        __COUT_ERR__ << ss.str();
        __SS_THROW__;
    }

    const unsigned char isDir = 0x4;
    // const std::string        pDir  = ".";
    // const std::string        ppDir = "..";
    // int                 dirVersion;
    std::string::const_iterator it;
    std::string                 dirName;
    std::set<TableVersion>      dirNumbers;

    while((dirp = readdir(dp)) != 0)
    {
        if(dirp->d_type == isDir && dirp->d_name[0] != '.')
        {
            dirName = dirp->d_name;
            // Check if there are non numeric directories
            it = dirName.begin();

            while(it != dirName.end() && std::isdigit(*it))
                ++it;

            if(dirName.empty() || it != dirName.end())
            {
                std::cout << __COUT_HDR_FL__ << "WARNING: there is a non numeric directory in " << configDir << " called " << dirName
                          << " please remove it from there since only numeric "
                             "directories are considered."
                          << std::endl;
                continue;
            }

            dirNumbers.insert(TableVersion(strtol(dirp->d_name, 0, 10)));
        }
    }
    closedir(dp);
    return dirNumbers;
}