/++
  read configuration files<BR>
  - read config files<BR>
  meta_config_files.d
+/
module sdp.meta.read_config_files;
static template configIn() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final string configIn(M,E,C)(M manifest, E env, C conf_sdl) {
    auto possible_config_path_locations = ConfigFilePaths!()(manifest, env).possible_config_path_locations;
    string config_file_str;
    foreach(pth; possible_config_path_locations) {
      auto conf_file = format(
        "%s/%s",
        pth,
        conf_sdl,
      );
      if (config_file_str.length > 0) {
        break;
      }
      try {
        if (exists(conf_file)) {
          debug(configfile) {
            writeln(conf_file);
          }
          config_file_str = conf_file.readText;
          break;
        }
      }
      catch (ErrnoException ex) {
      }
      catch (FileException ex) {
      }
    }
    return config_file_str;
  }
}
/+

+/
static template ConfigSDLang() {
  import sdlang;
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  auto ConfigSDLang(string configuration, string conf_sdl_filename) {
    Tag sdl_root_conf;
    try {
      sdl_root_conf = parseSource(configuration);
    }
    catch(ParseException e) {
      stderr.writeln("SDLang problem with content for ", conf_sdl_filename);
      stderr.writeln(e.msg);
    }
    return sdl_root_conf;
  }
}
/+
+/
static template configRead() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  
  final auto configRead(M,E,C)(M manifest, E env, C conf_sdl) {
    auto configuration = configIn!()(manifest, env, conf_sdl);
    auto sdl_root = ConfigSDLang!()(configuration, conf_sdl);
    return sdl_root;
  }
}