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/++
  read configuration files<BR>
  - read config files<BR>
  meta_config_files.d
+/
module sdp.meta.read_config_files;
static template configInSite() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final string configInSite(M,E)(M manifest, E env) {
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_sdl = conf_file_details.possible_config_path_locations.config_filename_site;
    auto possible_config_path_locations = conf_file_details.possible_config_path_locations.local_site;
    string config_file_str;
    debug(io) {
      writeln("WARNING (io debug) in config filename: ", conf_sdl);
      writeln("WARNING (io debug) in config possible path locations: ", possible_config_path_locations);
    }
    foreach(pth; possible_config_path_locations) {
      auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_sdl)).array;
      if (config_file_str.length > 0) {
        break;
      }
      try {
        if (exists(conf_file)) {
          debug(io) {
            writeln("WARNING (io debug) in config file found: ", conf_file);
          }
          config_file_str = conf_file.readText;
          break;
        }
      }
      catch (ErrnoException ex) {
      }
      catch (FileException ex) {
      }
    }
    return config_file_str;
  }
}
static template configInDoc() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final string configInDoc(M,E)(M manifest, E env) {
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_sdl = conf_file_details.config_filename_document;
    auto possible_config_path_locations = conf_file_details.possible_config_path_locations.document;
    string config_file_str;
    debug(io) {
      writeln("WARNING (io debug) in config filename: ", conf_sdl);
      writeln("WARNING (io debug) in config possible path locations: ", possible_config_path_locations);
    }
    foreach(pth; possible_config_path_locations) {
      auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_sdl)).array;
      if (config_file_str.length > 0) {
        break;
      }
      try {
        if (exists(conf_file)) {
          debug(io) {
            writeln("WARNING (io debug) in config file found: ", 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 configReadSite() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  
  final auto configReadSite(M,E)(M manifest, E env) {
    auto configuration = configInSite!()(manifest, env);
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_sdl = conf_file_details.possible_config_path_locations.config_filename_site;
    auto sdl_root = ConfigSDLang!()(configuration, conf_sdl);
    return sdl_root;
  }
}
static template configReadDoc() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  
  final auto configReadDoc(M,E)(M manifest, E env) {
    auto configuration = configInDoc!()(manifest, env);
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_sdl = conf_file_details.config_filename_document;
    auto sdl_root = ConfigSDLang!()(configuration, conf_sdl);
    return sdl_root;
  }
}