// license:BSD-3-Clause // copyright-holders:Nicola Salmoria, Aaron Giles /*************************************************************************** config.c Configuration file I/O. ***************************************************************************/ #include "emu.h" #include "emuopts.h" #include "drivenum.h" #include "config.h" #include "xmlfile.h" #define DEBUG_CONFIG 0 //************************************************************************** // CONFIGURATION MANAGER //************************************************************************** //------------------------------------------------- // configuration_manager - constructor //------------------------------------------------- configuration_manager::configuration_manager(running_machine &machine) : m_machine(machine) { } /************************************* * * Register to be involved in config * save/load * *************************************/ void configuration_manager::config_register(const char* nodename, config_saveload_delegate load, config_saveload_delegate save) { config_element element; element.name = nodename; element.load = load; element.save = save; m_typelist.push_back(element); } /************************************* * * Settings save/load frontend * *************************************/ int configuration_manager::load_settings() { const char *controller = machine().options().ctrlr(); int loaded = 0; /* loop over all registrants and call their init function */ for (auto type : m_typelist) type.load(config_type::CONFIG_TYPE_INIT, nullptr); /* now load the controller file */ if (controller[0] != 0) { /* open the config file */ emu_file file(machine().options().ctrlr_path(), OPEN_FLAG_READ); osd_file::error filerr = file.open(controller, ".cfg"); if (filerr != osd_file::error::NONE) throw emu_fatalerror("Could not load controller file %s.cfg", controller); /* load the XML */ if (!load_xml(file, config_type::CONFIG_TYPE_CONTROLLER)) throw emu_fatalerror("Could not load controller file %s.cfg", controller); } /* next load the defaults file */ emu_file file(machine().options().cfg_directory(), OPEN_FLAG_READ); osd_file::error filerr = file.open("default.cfg"); if (filerr == osd_file::error::NONE) load_xml(file, config_type::CONFIG_TYPE_DEFAULT); /* finally, load the game-specific file */ filerr = file.open(machine().basename(), ".cfg"); if (filerr == osd_file::error::NONE) loaded = load_xml(file, config_type::CONFIG_TYPE_GAME); /* loop over all registrants and call their final function */ for (auto type : m_typelist) type.load(config_type::CONFIG_TYPE_FINAL, nullptr); /* if we didn't find a saved config, return 0 so the main core knows that it */ /* is the first time the game is run and it should diplay the disclaimer. */ return loaded; } void configuration_manager::save_settings() { /* loop over all registrants and call their init function */ for (auto type : m_typelist) type.save(config_type::CONFIG_TYPE_INIT, nullptr); /* save the defaults file */ emu_file file(machine().options().cfg_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS); osd_file::error filerr = file.open("default.cfg"); if (filerr == osd_file::error::NONE) save_xml(file, config_type::CONFIG_TYPE_DEFAULT); /* finally, save the game-specific file */ filerr = file.open(machine().basename(), ".cfg"); if (filerr == osd_file::error::NONE) save_xml(file, config_type::CONFIG_TYPE_GAME); /* loop over all registrants and call their final function */ for (auto type : m_typelist) type.save(config_type::CONFIG_TYPE_FINAL, nullptr); } /************************************* * * XML file load * *************************************/ int configuration_manager::load_xml(emu_file &file, config_type which_type) { xml_data_node *root, *confignode, *systemnode; const char *srcfile; int version, count; /* read the file */ root = xml_file_read(file, nullptr); if (!root) goto error; /* find the config node */ confignode = xml_get_sibling(root->child, "mameconfig"); if (!confignode) goto error; /* validate the config data version */ version = xml_get_attribute_int(confignode, "version", 0); if (version != CONFIG_VERSION) goto error; /* strip off all the path crap from the source filename */ srcfile = strrchr(machine().system().source_file, '/'); if (!srcfile) srcfile = strrchr(machine().system().source_file, '\\'); if (!srcfile) srcfile = strrchr(machine().system().source_file, ':'); if (!srcfile) srcfile = machine().system().source_file; else srcfile++; /* loop over all system nodes in the file */ count = 0; for (systemnode = xml_get_sibling(confignode->child, "system"); systemnode; systemnode = xml_get_sibling(systemnode->next, "system")) { /* look up the name of the system here; skip if none */ const char *name = xml_get_attribute_string(systemnode, "name", ""); /* based on the file type, determine whether we have a match */ switch (which_type) { case config_type::CONFIG_TYPE_GAME: /* only match on the specific game name */ if (strcmp(name, machine().system().name) != 0) continue; break; case config_type::CONFIG_TYPE_DEFAULT: /* only match on default */ if (strcmp(name, "default") != 0) continue; break; case config_type::CONFIG_TYPE_CONTROLLER: { int clone_of; /* match on: default, game name, source file name, parent name, grandparent name */ if (strcmp(name, "default") != 0 && strcmp(name, machine().system().name) != 0 && strcmp(name, srcfile) != 0 && ((clone_of = driver_list::clone(machine().system())) == -1 || strcmp(name, driver_list::driver(clone_of).name) != 0) && (clone_of == -1 || ((clone_of = driver_list::clone(clone_of)) == -1) || strcmp(name, driver_list::driver(clone_of).name) != 0)) continue; break; } default: break; } /* log that we are processing this entry */ if (DEBUG_CONFIG) osd_printf_debug("Entry: %s -- processing\n", name); /* loop over all registrants and call their load function */ for (auto type : m_typelist) type.load(which_type, xml_get_sibling(systemnode->child, type.name.c_str())); count++; } /* error if this isn't a valid game match */ if (count == 0) goto error; /* free the parser */ xml_file_free(root); return 1; error: if (root) xml_file_free(root); return 0; } /************************************* * * XML file save * *************************************/ int configuration_manager::save_xml(emu_file &file, config_type which_type) { xml_data_node *root = xml_file_create(); xml_data_node *confignode, *systemnode; /* if we don't have a root, bail */ if (!root) return 0; /* create a config node */ confignode = xml_add_child(root, "mameconfig", nullptr); if (!confignode) goto error; xml_set_attribute_int(confignode, "version", CONFIG_VERSION); /* create a system node */ systemnode = xml_add_child(confignode, "system", nullptr); if (!systemnode) goto error; xml_set_attribute(systemnode, "name", (which_type == config_type::CONFIG_TYPE_DEFAULT) ? "default" : machine().system().name); /* create the input node and write it out */ /* loop over all registrants and call their save function */ for (auto type : m_typelist) { xml_data_node *curnode = xml_add_child(systemnode, type.name.c_str(), nullptr); if (!curnode) goto error; type.save(which_type, curnode); /* if nothing was added, just nuke the node */ if (!curnode->value && !curnode->child) xml_delete_node(curnode); } /* flush the file */ xml_file_write(root, file); /* free and get out of here */ xml_file_free(root); return 1; error: xml_file_free(root); return 0; }