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#pragma once
#include <forstio/error.hpp>
#include <filesystem>
#include <cstdlib>
namespace kel {
namespace lbm {
struct environment {
std::filesystem::path lbm_dir;
std::filesystem::path data_dir;
};
saw::error_or<environment> lbm_directory(){
namespace fs = std::filesystem;
const char* home_dir = std::getenv("HOME");
if(not home_dir){
return saw::make_error<saw::err::not_found>("Couldn't find home dir");
}
environment env;
env.lbm_dir = std::filesystem::path{home_dir} / ".lbm";
{
env.data_dir = env.lbm_dir / "data";
// LBM Data Location
auto lbm_dir_config = env.lbm_dir / "data_dir_location.txt";
if( fs::exists(lbm_dir_config) && fs::is_regular_file(lbm_dir_config) ){
std::ifstream file{lbm_dir_config};
if(file.is_open()){
std::stringstream buffer;
buffer <<file.rdbuf();
env.data_dir = fs::path{buffer.str()};
}
}
}
return env;
}
/**
* Returns the default output directory.
* Located outside the project dir because dispatching build jobs with output data in the git directory
* also copies simulated data which takes a long time.
*/
saw::error_or<std::filesystem::path> output_directory(){
namespace fs = std::filesystem;
const char* home_dir = std::getenv("HOME");
if(not home_dir){
return saw::make_error<saw::err::not_found>("Couldn't find home dir");
}
auto lbm_dir = std::filesystem::path{home_dir} / ".lbm";
{
auto lbm_dir_config = lbm_dir / "data_dir_location.txt";
if( fs::exists(lbm_dir_config) && fs::is_regular_file(lbm_dir_config) ){
std::ifstream file{lbm_dir_config};
if(file.is_open()){
std::stringstream buffer;
buffer <<file.rdbuf();
return fs::path{buffer.str()};
}
}
}
return lbm_dir / "data";
}
}
}
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