systemTextFactory.cc

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// string for gexit
#include "gutilities.h"
 
// gsystem
#include "systemTextFactory.h"
#include "gsystemConventions.h"
 
// cpp
#include <fstream>
#include <memory>
 
// returns the file stream, checking all possible directories.
// SYSTEMTYPE can be:
// - GTEXTGEOMTYPE (mandatory, exit if not found)
// - GTEXTMATSTYPE
std::unique_ptr<std::ifstream> GSystemTextFactory::gSystemTextFileStream(GSystem* system, const std::string& SYSTEMTYPE) {
    std::string fileName  = system->getFilePath();
    std::string variation = system->getVariation();
    std::string fname     = fileName + SYSTEMTYPE + variation + ".txt";
 
    log->info(0, "gSystemTextFileStream filename is: ", fname);
 
    // default dir is "."
    auto IN = std::make_unique<std::ifstream>(fname.c_str());
 
    if (IN->good()) {
        log->info(1, "Trying file ", fname);
        return IN;
    }
    else {
        // file not good, now trying other locations
        for (const auto& trialLocation : possibleLocationOfFiles) {
            std::string newName = trialLocation + "/" + fname;
 
            log->info(1, "Trying file ", newName);
 
            IN->open(newName.c_str());
            if (IN->good()) {
                // file found, return stream
                log->info(1, "Trying file ", newName);
                return IN;
            }
        }
    }
 
    // at this point the file was not found
    // this could be ok if we are looking for the material file - if the system annotation is 'mats_only'
    if (SYSTEMTYPE == GTEXTGEOMTYPE) {
        if (system->getAnnotations() == "mats_only") {
            log->info(1, "File ", fname, " not found, but this is ok because the system annotation is 'mats_only'");
            return nullptr;
        }
        log->error(ERR_GSETUPFILENOTOFOUND, "File ", fname, " not found.");
    }
 
    // the file was not found
    return nullptr;
}