/* * luaa.c - Lua configuration management * * Copyright © 2008-2009 Julien Danjou * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * */ /** awesome core API * * Additionally to the classes described here, one can also use X properties as * described in @{xproperties}. * * @author Julien Danjou <julien@danjou.info> * @copyright 2008-2009 Julien Danjou * @module awesome */ /** Register a new xproperty. * * @tparam string name The name of the X11 property. * @tparam string type One of "string", "number" or "boolean". * @function register_xproperty */ #define _GNU_SOURCE #include "luaa.h" #include "globalconf.h" #include "awesome.h" #include "common/backtrace.h" #include "common/version.h" #include "config.h" #include "event.h" #include "objects/client.h" #include "objects/drawable.h" #include "objects/drawin.h" #include "objects/screen.h" #include "objects/selection_watcher.h" #include "objects/tag.h" #include "property.h" #include "selection.h" #include "spawn.h" #include "systray.h" #include "xkb.h" #include "xrdb.h" #include #include #include #include #include #include #include /* for gethostname() */ #ifdef WITH_DBUS extern const struct luaL_Reg awesome_dbus_lib[]; #endif extern const struct luaL_Reg awesome_keygrabber_lib[]; extern const struct luaL_Reg awesome_mousegrabber_lib[]; extern const struct luaL_Reg awesome_root_lib[]; extern const struct luaL_Reg awesome_mouse_methods[]; extern const struct luaL_Reg awesome_mouse_meta[]; /** A call into the Lua code aborted with an error. * * This signal is used in the example configuration, @{05-awesomerc.md}, * to let a notification box pop up. * @param err Table with the error object, can be converted to a string with * `tostring(err)`. * @signal debug::error */ /** A deprecated Lua function was called. * * @tparam string hint String with a hint on what to use instead of the * deprecated functionality. * @tparam[opt=nil] string|nil see The name of the newer API * @tparam[opt=nil] table|nil args The name of the newer API * @signal debug::deprecation */ /** An invalid key was read from an object. * * This can happen if `foo` in an `c.foo` access does not exist. * @param unknown1 Class? * @param unknown2 Key? * @signal debug::index::miss */ /** An invalid key was written to an object. * * This can happen if `foo` in an `c.foo = "bar"` assignment doesn't exist. * @param unknown1 Class? * @param unknown2 Key? * @param unknown3 Value? * @signal debug::newindex::miss */ /** The systray should be updated. * * This signal is used in `wibox.widget.systray`. * @signal systray::update */ /** The wallpaper has changed. * * This signal is used for pseudo-transparency in `wibox.drawable` if no * composite manager is running. * @signal wallpaper_changed */ /** Keyboard map has changed. * * This signal is sent after the new keymap has been loaded. It is used in * `awful.widget.keyboardlayout` to redraw the layout. * @signal xkb::map_changed */ /** Keyboard group has changed. * * It's used in `awful.widget.keyboardlayout` to redraw the layout. * @param group Integer containing the changed group * @signal xkb::group_changed. */ /** Refresh. * * This signal is emitted as a kind of idle signal in the event loop. * One example usage is in `gears.timer` to executed delayed calls. * @signal refresh */ /** Awesome is about to enter the event loop. * * This means all initialization has been done. * @signal startup */ /** Awesome is exiting / about to restart. * * This signal is emitted in the `atexit` handler as well when awesome * restarts. * @param reason_restart Boolean value is true if the signal was sent * because of a restart. * @signal exit */ /** The output status of a screen has changed. * * @param output String containing which output has changed. * @param connection_state String containing the connection status of * the output: It will be either "Connected", "Disconnected" or * "Unknown". * @signal screen::change */ /** Path to config file */ static char *conffile; /** Check whether a composite manager is running. * \return True if such a manager is running. */ static bool composite_manager_running(void) { xcb_intern_atom_reply_t *atom_r; xcb_get_selection_owner_reply_t *selection_r; char *atom_name; bool result; if(!(atom_name = xcb_atom_name_by_screen("_NET_WM_CM", globalconf.default_screen))) { warn("error getting composite manager atom"); return false; } atom_r = xcb_intern_atom_reply(globalconf.connection, xcb_intern_atom_unchecked(globalconf.connection, false, a_strlen(atom_name), atom_name), NULL); p_delete(&atom_name); if(!atom_r) return false; selection_r = xcb_get_selection_owner_reply(globalconf.connection, xcb_get_selection_owner_unchecked(globalconf.connection, atom_r->atom), NULL); p_delete(&atom_r); result = selection_r != NULL && selection_r->owner != XCB_NONE; p_delete(&selection_r); return result; } /** Quit awesome. * @tparam[opt=0] integer code The exit code to use when exiting. * @function quit */ static int luaA_quit(lua_State *L) { if (!lua_isnoneornil(L, 1)) globalconf.exit_code = luaL_checkinteger(L, 1); if (globalconf.loop == NULL) globalconf.loop = g_main_loop_new(NULL, FALSE); g_main_loop_quit(globalconf.loop); return 0; } /** Execute another application, probably a window manager, to replace * awesome. * * @param cmd The command line to execute. * @function exec */ static int luaA_exec(lua_State *L) { const char *cmd = luaL_checkstring(L, 1); awesome_atexit(false); a_exec(cmd); return 0; } /** Restart awesome. * @function restart */ static int luaA_restart(lua_State *L) { awesome_restart(); return 0; } /** Send a signal to a process. * @tparam integer pid Process identifier. 0 and negative values have special * meaning. See `man 3 kill`. * @tparam integer sig Signal number. * See `awesome.unix_signal` for a list of signals. * @treturn boolean true if the signal was successfully sent, else false * @function kill */ static int luaA_kill(lua_State *L) { int pid = luaL_checknumber(L, 1); int sig = luaA_checknumber_range(L, 2, 0, INT_MAX); int result = kill(pid, sig); lua_pushboolean(L, result == 0); return 1; } /** Synchronize with the X11 server. This is needed in the test suite to avoid * some race conditions. You should never need to use this function. * @function sync */ static int luaA_sync(lua_State *L) { xcb_aux_sync(globalconf.connection); return 0; } /** Translate a GdkPixbuf to a cairo image surface.. * * @param pixbuf The pixbuf as a light user datum. * @param path The pixbuf origin path * @return A cairo surface as light user datum. * @function pixbuf_to_surface */ static int luaA_pixbuf_to_surface(lua_State *L) { GdkPixbuf *pixbuf = (GdkPixbuf *) lua_touserdata(L, 1); cairo_surface_t *surface = draw_surface_from_pixbuf(pixbuf); /* lua has to make sure to free the ref or we have a leak */ lua_pushlightuserdata(L, surface); return 1; } /** Load an image from a given path. * * @param name The file name. * @return[1] A cairo surface as light user datum. * @return[2] nil * @treturn[2] string Error message * @function load_image */ static int luaA_load_image(lua_State *L) { /* TODO: Deprecate this function, Lua can use GdkPixbuf directly plus * awesome.pixbuf_to_surface */ GError *error = NULL; const char *filename = luaL_checkstring(L, 1); cairo_surface_t *surface = draw_load_image(L, filename, &error); if (!surface) { lua_pushnil(L); lua_pushstring(L, error->message); g_error_free(error); return 2; } /* lua has to make sure to free the ref or we have a leak */ lua_pushlightuserdata(L, surface); return 1; } /** Set the preferred size for client icons. * * The closest equal or bigger size is picked if present, otherwise the closest * smaller size is picked. The default is 0 pixels, ie. the smallest icon. * * @param size The size of the icons in pixels. * @function set_preferred_icon_size */ static int luaA_set_preferred_icon_size(lua_State *L) { globalconf.preferred_icon_size = luaA_checkinteger_range(L, 1, 0, UINT32_MAX); return 0; } /** UTF-8 aware string length computing. * \param L The Lua VM state. * \return The number of elements pushed on stack. */ static int luaA_mbstrlen(lua_State *L) { const char *cmd = luaL_checkstring(L, 1); lua_pushinteger(L, (ssize_t) mbstowcs(NULL, NONULL(cmd), 0)); return 1; } /** Enhanced type() function which recognize awesome objects. * \param L The Lua VM state. * \return The number of arguments pushed on the stack. */ static int luaAe_type(lua_State *L) { luaL_checkany(L, 1); lua_pushstring(L, luaA_typename(L, 1)); return 1; } /** Replace various standards Lua functions with our own. * \param L The Lua VM state. */ static void luaA_fixups(lua_State *L) { /* export string.wlen */ lua_getglobal(L, "string"); lua_pushcfunction(L, luaA_mbstrlen); lua_setfield(L, -2, "wlen"); lua_pop(L, 1); /* replace type */ lua_pushcfunction(L, luaAe_type); lua_setglobal(L, "type"); /* set selection */ lua_pushcfunction(L, luaA_selection_get); lua_setglobal(L, "selection"); } static const char * get_modifier_name(int map_index) { switch (map_index) { case XCB_MAP_INDEX_SHIFT: return "Shift"; case XCB_MAP_INDEX_LOCK: return "Lock"; case XCB_MAP_INDEX_CONTROL: return "Control"; case XCB_MAP_INDEX_1: return "Mod1"; /* Alt */ case XCB_MAP_INDEX_2: return "Mod2"; case XCB_MAP_INDEX_3: return "Mod3"; case XCB_MAP_INDEX_4: return "Mod4"; case XCB_MAP_INDEX_5: return "Mod5"; } return 0; /* \0 */ } /* Undocumented */ /* * The table of keybindings modifiers. * * Each modifier has zero to many entries depending on the keyboard layout. * For example, `Shift` usually both has a left and right variant. Each * modifier entry has a `keysym` and `keycode` entry. For the US PC 105 * keyboard, it looks like: * * awesome.modifiers = { * Shift = { * {keycode = 50 , keysym = 'Shift_L' }, * {keycode = 62 , keysym = 'Shift_R' }, * }, * Lock = {}, * Control = { * {keycode = 37 , keysym = 'Control_L' }, * {keycode = 105, keysym = 'Control_R' }, * }, * Mod1 = { * {keycode = 64 , keysym = 'Alt_L' }, * {keycode = 108, keysym = 'Alt_R' }, * }, * Mod2 = { * {keycode = 77 , keysym = 'Num_Lock' }, * }, * Mod3 = {}, * Mod4 = { * {keycode = 133, keysym = 'Super_L' }, * {keycode = 134, keysym = 'Super_R' }, * }, * Mod5 = { * {keycode = 203, keysym = 'Mode_switch'}, * }, * }; * * @tfield table modifiers * @tparam table modifiers.Shift The Shift modifiers. * @tparam table modifiers.Lock The Lock modifiers. * @tparam table modifiers.Control The Control modifiers. * @tparam table modifiers.Mod1 The Mod1 (Alt) modifiers. * @tparam table modifiers.Mod2 The Mod2 modifiers. * @tparam table modifiers.Mod3 The Mod3 modifiers. * @tparam table modifiers.Mod4 The Mod4 modifiers. * @tparam table modifiers.Mod5 The Mod5 modifiers. */ /* * Modifiers can change over time, given they are currently not tracked, just * query them each time. Use with moderation. */ static int luaA_get_modifiers(lua_State *L) { xcb_get_modifier_mapping_reply_t *mods = xcb_get_modifier_mapping_reply(globalconf.connection, xcb_get_modifier_mapping(globalconf.connection), NULL); if (!mods) return 0; xcb_keycode_t *mappings = xcb_get_modifier_mapping_keycodes(mods); struct xkb_keymap *keymap = xkb_state_get_keymap(globalconf.xkb_state); lua_newtable(L); /* This get the MAPPED modifiers, not all of them are */ for (int i = XCB_MAP_INDEX_SHIFT; i <= XCB_MAP_INDEX_5; i++) { lua_pushstring(L, get_modifier_name(i)); lua_newtable(L); for (int j = 0; j < mods->keycodes_per_modifier; j++) { const xkb_keysym_t *keysyms; const xcb_keycode_t key_code = mappings[i * mods->keycodes_per_modifier + j]; xkb_keymap_key_get_syms_by_level(keymap, key_code, 0, 0, &keysyms); if (keysyms != NULL) { /* The +1 because j starts at zero and Lua at 1 */ lua_pushinteger(L, j+1); lua_newtable(L); lua_pushstring(L, "keycode"); lua_pushinteger(L, key_code); lua_settable(L, -3); /* Technically it is possible to get multiple keysyms here, * but... we just use the first one. */ lua_pushstring(L, "keysym"); char *string = key_get_keysym_name(keysyms[0]); lua_pushstring(L, string); p_delete(&string); lua_settable(L, -3); lua_settable(L, -3); } } lua_settable(L, -3); } free(mods); return 0; } /* Undocumented */ /* * A table with the currently active modifier names. * * @tfield table _active_modifiers */ static int luaA_get_active_modifiers(lua_State *L) { int count = 1; lua_newtable(L); for (int i = XCB_MAP_INDEX_SHIFT; i <= XCB_MAP_INDEX_5; i++) { const int active = xkb_state_mod_index_is_active (globalconf.xkb_state, i, XKB_STATE_MODS_DEPRESSED | XKB_STATE_MODS_EFFECTIVE ); if (active) { lua_pushstring(L, get_modifier_name(i)); lua_rawseti(L,-2, count++); } } return 0; } /** * The version of awesome. * @tfield string version */ /** * The release name of awesome. * @tfield string release */ /** * The configuration file which has been loaded. * @tfield string conffile */ /** * True if we are still in startup, false otherwise. * @tfield boolean startup */ /** * Error message for errors that occured during * startup. * @tfield string startup_errors */ /** * True if a composite manager is running. * @tfield boolean composite_manager_running */ /** * Table mapping between signal numbers and signal identifiers. * @tfield table unix_signal */ /** * The hostname of the computer on which we are running. * @tfield string hostname */ /** * The path where themes were installed to. * @tfield string themes_path */ /** * The path where icons were installed to. * @tfield string icon_path */ static int luaA_awesome_index(lua_State *L) { if(luaA_usemetatable(L, 1, 2)) return 1; const char *buf = luaL_checkstring(L, 2); if(A_STREQ(buf, "conffile")) { lua_pushstring(L, conffile); return 1; } if(A_STREQ(buf, "version")) { lua_pushstring(L, awesome_version_string()); return 1; } if(A_STREQ(buf, "release")) { lua_pushstring(L, awesome_release_string()); return 1; } if(A_STREQ(buf, "startup")) { lua_pushboolean(L, globalconf.loop == NULL); return 1; } if(A_STREQ(buf, "_modifiers")) { luaA_get_modifiers(L); return 1; } if(A_STREQ(buf, "_active_modifiers")) { luaA_get_active_modifiers(L); return 1; } if(A_STREQ(buf, "startup_errors")) { if (globalconf.startup_errors.len == 0) return 0; lua_pushstring(L, globalconf.startup_errors.s); return 1; } if(A_STREQ(buf, "composite_manager_running")) { lua_pushboolean(L, composite_manager_running()); return 1; } if(A_STREQ(buf, "hostname")) { /* No good way to handle failures... */ char hostname[256] = ""; gethostname(&hostname[0], countof(hostname)); hostname[countof(hostname) - 1] = '\0'; lua_pushstring(L, hostname); return 1; } if(A_STREQ(buf, "themes_path")) { lua_pushliteral(L, AWESOME_THEMES_PATH); return 1; } if(A_STREQ(buf, "icon_path")) { lua_pushliteral(L, AWESOME_ICON_PATH); return 1; } return luaA_default_index(L); } /** Add a global signal. * * @param name A string with the event name. * @param func The function to call. * @function connect_signal */ static int luaA_awesome_connect_signal(lua_State *L) { const char *name = luaL_checkstring(L, 1); luaA_checkfunction(L, 2); signal_connect(&global_signals, name, luaA_object_ref(L, 2)); return 0; } /** Remove a global signal. * * @param name A string with the event name. * @param func The function to call. * @function disconnect_signal */ static int luaA_awesome_disconnect_signal(lua_State *L) { const char *name = luaL_checkstring(L, 1); luaA_checkfunction(L, 2); const void *func = lua_topointer(L, 2); if (signal_disconnect(&global_signals, name, func)) luaA_object_unref(L, (void *) func); return 0; } /** Emit a global signal. * * @param name A string with the event name. * @param ... The signal arguments. * @function emit_signal */ static int luaA_awesome_emit_signal(lua_State *L) { signal_object_emit(L, &global_signals, luaL_checkstring(L, 1), lua_gettop(L) - 1); return 0; } static int luaA_panic(lua_State *L) { warn("unprotected error in call to Lua API (%s)", lua_tostring(L, -1)); buffer_t buf; backtrace_get(&buf); warn("dumping backtrace\n%s", buf.s); warn("restarting awesome"); awesome_restart(); return 0; } #if LUA_VERSION_NUM >= 502 static const char * luaA_tolstring(lua_State *L, int idx, size_t *len) { return luaL_tolstring(L, idx, len); } #else static const char * luaA_tolstring(lua_State *L, int idx, size_t *len) { /* Try using the metatable. If that fails, push the value itself onto * the stack. */ if (!luaL_callmeta(L, idx, "__tostring")) lua_pushvalue(L, idx); switch (lua_type(L, -1)) { case LUA_TSTRING: lua_pushvalue(L, -1); break; case LUA_TBOOLEAN: if (lua_toboolean(L, -1)) lua_pushliteral(L, "true"); else lua_pushliteral(L, "false"); break; case LUA_TNUMBER: lua_pushfstring(L, "%f", lua_tonumber(L, -1)); break; case LUA_TNIL: lua_pushstring(L, "nil"); break; default: lua_pushfstring(L, "%s: %p", lua_typename(L, lua_type(L, -1)), lua_topointer(L, -1)); break; } lua_remove(L, -2); return lua_tolstring(L, -1, len); } #endif static int luaA_dofunction_on_error(lua_State *L) { /* Convert error to string, to prevent a follow-up error with lua_concat. */ luaA_tolstring(L, -1, NULL); /* duplicate string error */ lua_pushvalue(L, -1); /* emit error signal */ signal_object_emit(L, &global_signals, "debug::error", 1); if(!luaL_dostring(L, "return debug.traceback(\"error while running function!\", 3)")) { /* Move traceback before error */ lua_insert(L, -2); /* Insert sentence */ lua_pushliteral(L, "\nerror: "); /* Move it before error */ lua_insert(L, -2); lua_concat(L, 3); } return 1; } static void setup_awesome_signals(lua_State *L) { lua_getglobal(L, "awesome"); lua_pushstring(L, "unix_signal"); lua_newtable(L); #define SETUP_SIGNAL(sig) \ do { \ /* Set awesome.unix_signal["SIGSTOP"] = 42 */ \ lua_pushinteger(L, sig); \ lua_setfield(L, -2, #sig); \ /* Set awesome.unix_signal[42] = "SIGSTOP" */ \ lua_pushinteger(L, sig); \ lua_pushstring(L, #sig); \ lua_settable(L, -3); \ } while (0) /* Non-standard signals. These are first so that e.g. (on my system) * signals[29] is SIGPOLL and not SIGIO (the value gets overwritten). */ #ifdef SIGIOT SETUP_SIGNAL(SIGIOT); #endif #ifdef SIGEMT SETUP_SIGNAL(SIGEMT); #endif #ifdef SIGSTKFLT SETUP_SIGNAL(SIGSTKFLT); #endif #ifdef SIGIO SETUP_SIGNAL(SIGIO); #endif #ifdef SIGCLD SETUP_SIGNAL(SIGCLD); #endif #ifdef SIGPWR SETUP_SIGNAL(SIGPWR); #endif #ifdef SIGINFO SETUP_SIGNAL(SIGINFO); #endif #ifdef SIGLOST SETUP_SIGNAL(SIGLOST); #endif #ifdef SIGWINCH SETUP_SIGNAL(SIGWINCH); #endif #ifdef SIGUNUSED SETUP_SIGNAL(SIGUNUSED); #endif /* POSIX.1-1990, according to man 7 signal */ SETUP_SIGNAL(SIGHUP); SETUP_SIGNAL(SIGINT); SETUP_SIGNAL(SIGQUIT); SETUP_SIGNAL(SIGILL); SETUP_SIGNAL(SIGABRT); SETUP_SIGNAL(SIGFPE); SETUP_SIGNAL(SIGKILL); SETUP_SIGNAL(SIGSEGV); SETUP_SIGNAL(SIGPIPE); SETUP_SIGNAL(SIGALRM); SETUP_SIGNAL(SIGTERM); SETUP_SIGNAL(SIGUSR1); SETUP_SIGNAL(SIGUSR2); SETUP_SIGNAL(SIGCHLD); SETUP_SIGNAL(SIGCONT); SETUP_SIGNAL(SIGSTOP); SETUP_SIGNAL(SIGTSTP); SETUP_SIGNAL(SIGTTIN); SETUP_SIGNAL(SIGTTOU); /* POSIX.1-2001, according to man 7 signal */ SETUP_SIGNAL(SIGBUS); /* Some Operating Systems doesn't have SIGPOLL (e.g. FreeBSD) */ #ifdef SIGPOLL SETUP_SIGNAL(SIGPOLL); #endif SETUP_SIGNAL(SIGPROF); SETUP_SIGNAL(SIGSYS); SETUP_SIGNAL(SIGTRAP); SETUP_SIGNAL(SIGURG); SETUP_SIGNAL(SIGVTALRM); SETUP_SIGNAL(SIGXCPU); SETUP_SIGNAL(SIGXFSZ); #undef SETUP_SIGNAL /* Set awesome.signal to the table we just created, key was already pushed */ lua_rawset(L, -3); /* Pop "awesome" */ lua_pop(L, 1); } /* Add things to the string on top of the stack */ static void add_to_search_path(lua_State *L, string_array_t *searchpath, bool for_lua) { if (LUA_TSTRING != lua_type(L, -1)) { warn("package.path is not a string"); return; } foreach(entry, *searchpath) { int components; size_t len = a_strlen(*entry); lua_pushliteral(L, ";"); lua_pushlstring(L, *entry, len); if (for_lua) lua_pushliteral(L, "/?.lua"); else lua_pushliteral(L, "/?.so"); lua_concat(L, 3); if (for_lua) { lua_pushliteral(L, ";"); lua_pushlstring(L, *entry, len); lua_pushliteral(L, "/?/init.lua"); lua_concat(L, 3); components = 2; } else { components = 1; } lua_concat(L, components + 1); /* concatenate with string on top of the stack */ } /* add Lua lib path (/usr/share/awesome/lib by default) */ if (for_lua) { lua_pushliteral(L, ";" AWESOME_LUA_LIB_PATH "/?.lua"); lua_pushliteral(L, ";" AWESOME_LUA_LIB_PATH "/?/init.lua"); lua_concat(L, 3); /* concatenate with thing on top of the stack when we were called */ } else { lua_pushliteral(L, ";" AWESOME_LUA_LIB_PATH "/?.so"); lua_concat(L, 2); /* concatenate with thing on top of the stack when we were called */ } } /** Initialize the Lua VM * \param xdg An xdg handle to use to get XDG basedir. */ void luaA_init(xdgHandle* xdg, string_array_t *searchpath) { lua_State *L; static const struct luaL_Reg awesome_lib[] = { { "quit", luaA_quit }, { "exec", luaA_exec }, { "spawn", luaA_spawn }, { "restart", luaA_restart }, { "connect_signal", luaA_awesome_connect_signal }, { "disconnect_signal", luaA_awesome_disconnect_signal }, { "emit_signal", luaA_awesome_emit_signal }, { "systray", luaA_systray }, { "load_image", luaA_load_image }, { "pixbuf_to_surface", luaA_pixbuf_to_surface }, { "set_preferred_icon_size", luaA_set_preferred_icon_size }, { "register_xproperty", luaA_register_xproperty }, { "set_xproperty", luaA_set_xproperty }, { "get_xproperty", luaA_get_xproperty }, { "__index", luaA_awesome_index }, { "__newindex", luaA_default_newindex }, { "xkb_set_layout_group", luaA_xkb_set_layout_group}, { "xkb_get_layout_group", luaA_xkb_get_layout_group}, { "xkb_get_group_names", luaA_xkb_get_group_names}, { "xrdb_get_value", luaA_xrdb_get_value}, { "kill", luaA_kill}, { "sync", luaA_sync}, { NULL, NULL } }; L = globalconf.L.real_L_dont_use_directly = luaL_newstate(); /* Set panic function */ lua_atpanic(L, luaA_panic); /* Set error handling function */ lualib_dofunction_on_error = luaA_dofunction_on_error; luaL_openlibs(L); luaA_fixups(L); luaA_object_setup(L); /* Export awesome lib */ luaA_openlib(L, "awesome", awesome_lib, awesome_lib); setup_awesome_signals(L); /* Export root lib */ luaA_registerlib(L, "root", awesome_root_lib); lua_pop(L, 1); /* luaA_registerlib() leaves the table on stack */ #ifdef WITH_DBUS /* Export D-Bus lib */ luaA_registerlib(L, "dbus", awesome_dbus_lib); lua_pop(L, 1); /* luaA_registerlib() leaves the table on stack */ #endif /* Export keygrabber lib */ luaA_registerlib(L, "keygrabber", awesome_keygrabber_lib); lua_pop(L, 1); /* luaA_registerlib() leaves the table on stack */ /* Export mousegrabber lib */ luaA_registerlib(L, "mousegrabber", awesome_mousegrabber_lib); lua_pop(L, 1); /* luaA_registerlib() leaves the table on stack */ /* Export mouse */ luaA_openlib(L, "mouse", awesome_mouse_methods, awesome_mouse_meta); /* Export screen */ screen_class_setup(L); /* Export button */ button_class_setup(L); /* Export tag */ tag_class_setup(L); /* Export window */ window_class_setup(L); /* Export drawable */ drawable_class_setup(L); /* Export drawin */ drawin_class_setup(L); /* Export client */ client_class_setup(L); /* Export keys */ key_class_setup(L); /* Export selection watcher */ selection_watcher_class_setup(L); /* add Lua search paths */ lua_getglobal(L, "package"); if (LUA_TTABLE != lua_type(L, 1)) { warn("package is not a table"); return; } lua_getfield(L, 1, "path"); add_to_search_path(L, searchpath, true); lua_setfield(L, 1, "path"); /* package.path = "concatenated string" */ lua_getfield(L, 1, "cpath"); add_to_search_path(L, searchpath, false); lua_setfield(L, 1, "cpath"); /* package.cpath = "concatenated string" */ lua_pop(L, 1); /* pop "package" */ } static void luaA_startup_error(const char *err) { if (globalconf.startup_errors.len > 0) buffer_addsl(&globalconf.startup_errors, "\n\n"); buffer_adds(&globalconf.startup_errors, err); } static bool luaA_loadrc(const char *confpath) { lua_State *L = globalconf_get_lua_State(); if(luaL_loadfile(L, confpath)) { const char *err = lua_tostring(L, -1); luaA_startup_error(err); fprintf(stderr, "%s\n", err); lua_pop(L, 1); return false; } /* Set the conffile right now so it can be used inside the * configuration file. */ conffile = a_strdup(confpath); /* Move error handling function before function */ lua_pushcfunction(L, luaA_dofunction_on_error); lua_insert(L, -2); if(!lua_pcall(L, 0, 0, -2)) { /* Pop luaA_dofunction_on_error */ lua_pop(L, 1); return true; } const char *err = lua_tostring(L, -1); luaA_startup_error(err); fprintf(stderr, "%s\n", err); /* An error happened, so reset this. */ conffile = NULL; /* Pop luaA_dofunction_on_error() and the error message */ lua_pop(L, 2); return false; } /** Load a configuration file. * \param xdg An xdg handle to use to get XDG basedir. * \param confpatharg The configuration file to load. * \param run Run the configuration file. */ bool luaA_parserc(xdgHandle* xdg, const char *confpatharg) { const char *confpath = luaA_find_config(xdg, confpatharg, luaA_loadrc); bool ret = confpath != NULL; p_delete(&confpath); return ret; } /** Find a config file for which the given callback returns true. * \param xdg An xdg handle to use to get XDG basedir. * \param confpatharg The configuration file to load. * \param callback The callback to call. */ const char * luaA_find_config(xdgHandle* xdg, const char *confpatharg, luaA_config_callback *callback) { char *confpath = NULL; if(confpatharg && callback(confpatharg)) { return a_strdup(confpatharg); } confpath = xdgConfigFind("awesome/rc.lua", xdg); char *tmp = confpath; /* confpath is "string1\0string2\0string3\0\0" */ while(*tmp) { if(callback(tmp)) { const char *ret = a_strdup(tmp); p_delete(&confpath); return ret; } tmp += a_strlen(tmp) + 1; } p_delete(&confpath); if(callback(AWESOME_DEFAULT_CONF)) { return a_strdup(AWESOME_DEFAULT_CONF); } return NULL; } int luaA_class_index_miss_property(lua_State *L, lua_object_t *obj) { signal_object_emit(L, &global_signals, "debug::index::miss", 2); return 0; } int luaA_class_newindex_miss_property(lua_State *L, lua_object_t *obj) { signal_object_emit(L, &global_signals, "debug::newindex::miss", 3); return 0; } void luaA_emit_startup() { lua_State *L = globalconf_get_lua_State(); signal_object_emit(L, &global_signals, "startup", 0); } void luaA_emit_refresh() { lua_State *L = globalconf_get_lua_State(); signal_object_emit(L, &global_signals, "refresh", 0); } int luaA_default_index(lua_State *L) { return luaA_class_index_miss_property(L, NULL); } int luaA_default_newindex(lua_State *L) { return luaA_class_newindex_miss_property(L, NULL); } // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80