2 * lua.c - Lua configuration management
4 * Copyright © 2008 Julien Danjou <julien@danjou.info>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "common/util.h"
25 #include <sys/socket.h>
28 #include <sys/types.h>
42 #include "awesome-version-internal.h"
51 #include "common/socket.h"
52 #include "common/buffer.h"
54 extern awesome_t globalconf
;
56 extern const struct luaL_reg awesome_hooks_lib
[];
57 extern const struct luaL_reg awesome_dbus_lib
[];
58 extern const struct luaL_reg awesome_keygrabber_lib
[];
59 extern const struct luaL_reg awesome_mousegrabber_lib
[];
60 extern const struct luaL_reg awesome_button_methods
[];
61 extern const struct luaL_reg awesome_button_meta
[];
62 extern const struct luaL_reg awesome_image_methods
[];
63 extern const struct luaL_reg awesome_image_meta
[];
64 extern const struct luaL_reg awesome_mouse_methods
[];
65 extern const struct luaL_reg awesome_mouse_meta
[];
66 extern const struct luaL_reg awesome_screen_methods
[];
67 extern const struct luaL_reg awesome_screen_meta
[];
68 extern const struct luaL_reg awesome_client_methods
[];
69 extern const struct luaL_reg awesome_client_meta
[];
70 extern const struct luaL_reg awesome_tag_methods
[];
71 extern const struct luaL_reg awesome_tag_meta
[];
72 extern const struct luaL_reg awesome_widget_methods
[];
73 extern const struct luaL_reg awesome_widget_meta
[];
74 extern const struct luaL_reg awesome_wibox_methods
[];
75 extern const struct luaL_reg awesome_wibox_meta
[];
76 extern const struct luaL_reg awesome_keybinding_methods
[];
77 extern const struct luaL_reg awesome_keybinding_meta
[];
79 static struct sockaddr_un
*addr
;
80 static ev_io csio
= { .fd
= -1 };
82 #define XDG_CONFIG_HOME_DEFAULT "/.config"
84 /** Get or set global mouse bindings.
85 * This binding will be available when you'll click on root window.
86 * \param L The Lua VM state.
87 * \return The number of element pushed on stack.
90 * \lparam An array of mouse button bindings objects, or nothing.
91 * \return The array of mouse button bindings objects of this client.
94 luaA_buttons(lua_State
*L
)
96 button_array_t
*buttons
= &globalconf
.buttons
;
98 if(lua_gettop(L
) == 1)
99 luaA_button_array_set(L
, 1, buttons
);
101 return luaA_button_array_get(L
, buttons
);
105 * \param L The Lua VM state.
106 * \return The number of elements pushed on stack.
109 luaA_quit(lua_State
*L
__attribute__ ((unused
)))
111 ev_unloop(globalconf
.loop
, 1);
115 /** Execute another application, probably a window manager, to replace
117 * \param L The Lua VM state.
118 * \return The number of elements pushed on stack.
120 * \lparam The command line to execute.
123 luaA_exec(lua_State
*L
)
125 const char *cmd
= luaL_checkstring(L
, 1);
136 luaA_restart(lua_State
*L
__attribute__ ((unused
)))
143 luaA_openlib(lua_State
*L
, const char *name
,
144 const struct luaL_reg methods
[],
145 const struct luaL_reg meta
[])
147 luaL_newmetatable(L
, name
); /* 1 */
148 lua_pushvalue(L
, -1); /* dup metatable 2 */
149 lua_setfield(L
, -2, "__index"); /* metatable.__index = metatable 1 */
151 luaL_register(L
, NULL
, meta
); /* 1 */
152 luaL_register(L
, name
, methods
); /* 2 */
153 lua_pushvalue(L
, -1); /* dup self as metatable 3 */
154 lua_setmetatable(L
, -2); /* set self as metatable 2 */
158 /** UTF-8 aware string length computing.
159 * \param L The Lua VM state.
160 * \return The number of elements pushed on stack.
163 luaA_mbstrlen(lua_State
*L
)
165 const char *cmd
= luaL_checkstring(L
, 1);
166 lua_pushnumber(L
, mbstowcs(NULL
, NONULL(cmd
), 0));
170 /** Overload standard Lua next function to use __next key on metatable.
171 * \param L The Lua VM state.
172 * \param The number of elements pushed on stack.
175 luaAe_next(lua_State
*L
)
177 if(luaL_getmetafield(L
, 1, "__next"))
180 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
181 return lua_gettop(L
);
184 luaL_checktype(L
, 1, LUA_TTABLE
);
192 /** Overload lua_next() function by using __next metatable field
193 * to get next elements.
194 * \param L The Lua VM stack.
195 * \param idx The index number of elements in stack.
196 * \return 1 if more elements to come, 0 otherwise.
199 luaA_next(lua_State
*L
, int idx
)
201 if(luaL_getmetafield(L
, idx
, "__next"))
203 /* if idx is relative, reduce it since we got __next */
205 /* copy table and then move key */
206 lua_pushvalue(L
, idx
);
207 lua_pushvalue(L
, -3);
209 lua_pcall(L
, 2, 2, 0);
210 /* next returned nil, it's the end */
219 else if(lua_istable(L
, idx
))
220 return lua_next(L
, idx
);
226 /** Generic pairs function.
227 * \param L The Lua VM state.
228 * \return The number of elements pushed on stack.
231 luaA_generic_pairs(lua_State
*L
)
233 lua_pushvalue(L
, lua_upvalueindex(1)); /* return generator, */
234 lua_pushvalue(L
, 1); /* state, */
235 lua_pushnil(L
); /* and initial value */
239 /** Overload standard pairs function to use __pairs field of metatables.
240 * \param L The Lua VM state.
241 * \return The number of elements pushed on stack.
244 luaAe_pairs(lua_State
*L
)
246 if(luaL_getmetafield(L
, 1, "__pairs"))
249 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
250 return lua_gettop(L
);
253 luaL_checktype(L
, 1, LUA_TTABLE
);
254 return luaA_generic_pairs(L
);
258 luaA_ipairs_aux(lua_State
*L
)
260 int i
= luaL_checkint(L
, 2) + 1;
261 luaL_checktype(L
, 1, LUA_TTABLE
);
262 lua_pushinteger(L
, i
);
263 lua_rawgeti(L
, 1, i
);
264 return (lua_isnil(L
, -1)) ? 0 : 2;
267 /** Overload standard ipairs function to use __ipairs field of metatables.
268 * \param L The Lua VM state.
269 * \return The number of elements pushed on stack.
272 luaAe_ipairs(lua_State
*L
)
274 if(luaL_getmetafield(L
, 1, "__ipairs"))
277 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
278 return lua_gettop(L
);
281 luaL_checktype(L
, 1, LUA_TTABLE
);
282 lua_pushvalue(L
, lua_upvalueindex(1));
284 lua_pushinteger(L
, 0); /* and initial value */
288 /** Enhanced type() function which recognize awesome objects.
289 * \param L The Lua VM state.
290 * \return The number of arguments pushed on the stack.
293 luaAe_type(lua_State
*L
)
296 #define CHECK_TYPE(type) \
298 if(luaA_toudata(L, 1, #type)) \
300 lua_pushliteral(L, #type); \
307 CHECK_TYPE(keybinding
);
312 lua_pushstring(L
, luaL_typename(L
, 1));
316 /** Replace various standards Lua functions with our own.
317 * \param L The Lua VM state.
320 luaA_fixups(lua_State
*L
)
322 /* export string.wlen */
323 lua_getglobal(L
, "string");
324 lua_pushcfunction(L
, luaA_mbstrlen
);
325 lua_setfield(L
, -2, "wlen");
328 lua_pushliteral(L
, "next");
329 lua_pushcfunction(L
, luaAe_next
);
330 lua_settable(L
, LUA_GLOBALSINDEX
);
332 lua_pushliteral(L
, "pairs");
333 lua_pushcfunction(L
, luaAe_next
);
334 lua_pushcclosure(L
, luaAe_pairs
, 1); /* pairs get next as upvalue */
335 lua_settable(L
, LUA_GLOBALSINDEX
);
337 lua_pushliteral(L
, "ipairs");
338 lua_pushcfunction(L
, luaA_ipairs_aux
);
339 lua_pushcclosure(L
, luaAe_ipairs
, 1);
340 lua_settable(L
, LUA_GLOBALSINDEX
);
342 lua_pushliteral(L
, "type");
343 lua_pushcfunction(L
, luaAe_type
);
344 lua_settable(L
, LUA_GLOBALSINDEX
);
347 /** __next function for wtable objects.
348 * \param L The Lua VM state.
349 * \return The number of elements pushed on stack.
352 luaA_wtable_next(lua_State
*L
)
354 /* upvalue 1 is content table */
355 if(lua_next(L
, lua_upvalueindex(1)))
361 /** __ipairs function for wtable objects.
362 * \param L The Lua VM state.
363 * \return The number of elements pushed on stack.
366 luaA_wtable_ipairs(lua_State
*L
)
368 /* push ipairs_aux */
369 lua_pushvalue(L
, lua_upvalueindex(2));
370 /* push content table */
371 lua_pushvalue(L
, lua_upvalueindex(1));
372 lua_pushinteger(L
, 0); /* and initial value */
376 /** Index function of wtable objects.
377 * \param L The Lua VM state.
378 * \return The number of elements pushed on stack.
381 luaA_wtable_index(lua_State
*L
)
387 /* check for size, waiting lua 5.2 and __len on tables */
388 if((buf
= lua_tolstring(L
, -1, &len
)))
389 if(a_tokenize(buf
, len
) == A_TK_LEN
)
391 lua_pushnumber(L
, lua_objlen(L
, lua_upvalueindex(1)));
396 /* upvalue 1 is content table */
397 lua_rawget(L
, lua_upvalueindex(1));
401 /** Newndex function of wtable objects.
402 * \param L The Lua VM state.
403 * \return The number of elements pushed on stack.
406 luaA_wtable_newindex(lua_State
*L
)
408 bool invalid
= false;
410 /* push key on top */
412 /* get current key value in content table */
413 lua_rawget(L
, lua_upvalueindex(1));
414 /* if value is a widget, notify change */
415 if(lua_istable(L
, -1) || luaA_toudata(L
, -1, "widget"))
418 lua_pop(L
, 1); /* remove value */
420 /* if new value is a widget or a table */
421 if(lua_istable(L
, 3))
423 luaA_table2wtable(L
);
426 else if(!invalid
&& luaA_toudata(L
, 3, "widget"))
429 /* upvalue 1 is content table */
430 lua_rawset(L
, lua_upvalueindex(1));
433 luaA_wibox_invalidate_byitem(L
, lua_topointer(L
, 1));
438 /** Convert the top element of the stack to a proxied wtable.
439 * \param L The Lua VM state.
442 luaA_table2wtable(lua_State
*L
)
444 if(!lua_istable(L
, -1))
447 lua_newtable(L
); /* create *real* content table */
448 lua_newtable(L
); /* metatable */
449 lua_pushvalue(L
, -2); /* copy content table */
450 lua_pushcfunction(L
, luaA_ipairs_aux
); /* push ipairs aux */
451 lua_pushcclosure(L
, luaA_wtable_ipairs
, 2);
452 lua_pushvalue(L
, -3); /* copy content table */
453 lua_pushcclosure(L
, luaA_wtable_next
, 1); /* __next has the content table as upvalue */
454 lua_pushvalue(L
, -4); /* copy content table */
455 lua_pushcclosure(L
, luaA_wtable_index
, 1); /* __index has the content table as upvalue */
456 lua_pushvalue(L
, -5); /* copy content table */
457 lua_pushcclosure(L
, luaA_wtable_newindex
, 1); /* __newindex has the content table as upvalue */
458 /* set metatable field with just pushed closure */
459 lua_setfield(L
, -5, "__newindex");
460 lua_setfield(L
, -4, "__index");
461 lua_setfield(L
, -3, "__next");
462 lua_setfield(L
, -2, "__ipairs");
463 /* set metatable impossible to touch */
464 lua_pushliteral(L
, "wtable");
465 lua_setfield(L
, -2, "__metatable");
466 /* set new metatable on original table */
467 lua_setmetatable(L
, -3);
471 /* go through original table */
472 while(lua_next(L
, -3))
474 /* if convert value to wtable */
475 luaA_table2wtable(L
);
477 lua_pushvalue(L
, -2);
478 /* move key before value */
480 /* set same value in content table */
483 lua_pushvalue(L
, -1);
484 /* push the new value :-> */
486 /* set orig[k] = nil */
489 /* remove content table */
493 /** Look for an item: table, function, etc.
494 * \param L The Lua VM state.
495 * \param item The pointer item.
498 luaA_hasitem(lua_State
*L
, const void *item
)
501 while(luaA_next(L
, -2))
503 if(lua_topointer(L
, -1) == item
)
505 /* remove value and key */
509 if(lua_istable(L
, -1))
510 if(luaA_hasitem(L
, item
))
512 /* remove key and value */
522 /** Check if a table is a loop. When using table as direct acyclic digram,
524 * \param L The Lua VM state.
525 * \param idx The index of the table in the stack
526 * \return True if the table loops.
529 luaA_isloop(lua_State
*L
, int idx
)
531 if(lua_istable(L
, idx
))
533 lua_pushvalue(L
, idx
); /* push table on top */
534 if(luaA_hasitem(L
, lua_topointer(L
, -1)))
536 lua_pop(L
, 1); /* remove pushed table */
540 while(luaA_next(L
, -2))
542 /* check for recursivity */
543 if(luaA_isloop(L
, -1))
545 lua_pop(L
, 2); /* remove key and value */
548 lua_pop(L
, 1); /* remove value */
550 lua_pop(L
, 1); /* remove pushed table */
556 * This table can use safely object as key.
557 * \param L The Lua VM state.
558 * \return The number of elements pushed on stack.
561 luaA_otable_index(lua_State
*L
)
565 if((obj
= lua_touserdata(L
, 2)))
569 while(lua_next(L
, 1))
571 /* check the key against the key if the key is a userdata,
572 * otherwise check it again the value. */
573 if((v
= lua_touserdata(L
, -2))
577 else if((v
= lua_touserdata(L
, -1))
584 /* removes 'value'; keeps 'key' for next iteration */
595 * This table can use safely object as key.
596 * \param L The Lua VM state.
597 * \return The number of elements pushed on stack.
600 luaA_otable_newindex(lua_State
*L
)
604 if((obj
= lua_touserdata(L
, 2)))
608 while(lua_next(L
, 1))
610 if((v
= lua_touserdata(L
, -2))
615 /* push new value on top */
617 /* set in table key = value */
621 /* removes 'value'; keeps 'key' for next iteration */
632 * This function is multi-head (Zaphod) aware and will set display to
633 * the right screen according to mouse position.
634 * \param L The Lua VM state.
635 * \return The number of elements pushed on stack
637 * \lparam The command to launch.
638 * \lparam The optional screen number to spawn the command on.
641 luaA_spawn(lua_State
*L
)
643 char *host
, newdisplay
[128];
645 int screen
= 0, screenp
, displayp
;
647 if(lua_gettop(L
) == 2)
649 screen
= luaL_checknumber(L
, 2) - 1;
650 luaA_checkscreen(screen
);
653 cmd
= luaL_checkstring(L
, 1);
655 if(!globalconf
.xinerama_is_active
)
657 xcb_parse_display(NULL
, &host
, &displayp
, &screenp
);
658 snprintf(newdisplay
, sizeof(newdisplay
), "%s:%d.%d", host
, displayp
, screen
);
659 setenv("DISPLAY", newdisplay
, 1);
663 /* The double-fork construct avoids zombie processes and keeps the code
664 * clean from stupid signal handlers. */
669 if(globalconf
.connection
)
670 xcb_disconnect(globalconf
.connection
);
673 warn("execl '%s' failed: %s\n", cmd
, strerror(errno
));
682 /** awesome global table.
683 * \param L The Lua VM state.
684 * \return The number of elements pushed on stack.
686 * \lfield font The default font.
687 * \lfield conffile The configuration file which has been loaded.
690 luaA_awesome_index(lua_State
*L
)
692 if(luaA_usemetatable(L
, 1, 2))
696 const char *buf
= luaL_checklstring(L
, 2, &len
);
698 switch(a_tokenize(buf
, len
))
702 char *font
= pango_font_description_to_string(globalconf
.font
->desc
);
703 lua_pushstring(L
, font
);
708 lua_pushstring(L
, globalconf
.conffile
);
711 luaA_pushcolor(L
, &globalconf
.colors
.fg
);
714 luaA_pushcolor(L
, &globalconf
.colors
.bg
);
723 /** Newindex function for the awesome global table.
724 * \param L The Lua VM state.
725 * \return The number of elements pushed on stack.
728 luaA_awesome_newindex(lua_State
*L
)
730 if(luaA_usemetatable(L
, 1, 2))
734 const char *buf
= luaL_checklstring(L
, 2, &len
);
736 switch(a_tokenize(buf
, len
))
740 const char *newfont
= luaL_checkstring(L
, 3);
741 draw_font_delete(&globalconf
.font
);
742 globalconf
.font
= draw_font_new(newfont
);
746 if((buf
= luaL_checklstring(L
, 3, &len
)))
747 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.fg
, buf
, len
));
750 if((buf
= luaL_checklstring(L
, 3, &len
)))
751 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.bg
, buf
, len
));
760 /** Initialize the Lua VM
767 static const struct luaL_reg otable_methods
[] =
769 { "__call", luaA_otable_new
},
772 static const struct luaL_reg otable_meta
[] =
774 { "__index", luaA_otable_index
},
775 { "__newindex", luaA_otable_newindex
},
778 static const struct luaL_reg awesome_lib
[] =
780 { "quit", luaA_quit
},
781 { "exec", luaA_exec
},
782 { "spawn", luaA_spawn
},
783 { "restart", luaA_restart
},
784 { "buttons", luaA_buttons
},
785 { "__index", luaA_awesome_index
},
786 { "__newindex", luaA_awesome_newindex
},
790 L
= globalconf
.L
= luaL_newstate();
796 /* Export awesome lib */
797 luaA_openlib(L
, "awesome", awesome_lib
, awesome_lib
);
799 /* Export hooks lib */
800 luaL_register(L
, "hooks", awesome_hooks_lib
);
802 /* Export D-Bus lib */
803 luaL_register(L
, "dbus", awesome_dbus_lib
);
805 /* Export keygrabber lib */
806 luaL_register(L
, "keygrabber", awesome_keygrabber_lib
);
808 /* Export mousegrabber lib */
809 luaL_register(L
, "mousegrabber", awesome_mousegrabber_lib
);
811 /* Export otable lib */
812 luaA_openlib(L
, "otable", otable_methods
, otable_meta
);
815 luaA_openlib(L
, "screen", awesome_screen_methods
, awesome_screen_meta
);
818 luaA_openlib(L
, "mouse", awesome_mouse_methods
, awesome_mouse_meta
);
821 luaA_openlib(L
, "button", awesome_button_methods
, awesome_button_meta
);
824 luaA_openlib(L
, "image", awesome_image_methods
, awesome_image_meta
);
827 luaA_openlib(L
, "tag", awesome_tag_methods
, awesome_tag_meta
);
830 luaA_openlib(L
, "wibox", awesome_wibox_methods
, awesome_wibox_meta
);
833 luaA_openlib(L
, "widget", awesome_widget_methods
, awesome_widget_meta
);
836 luaA_openlib(L
, "client", awesome_client_methods
, awesome_client_meta
);
839 luaA_openlib(L
, "keybinding", awesome_keybinding_methods
, awesome_keybinding_meta
);
841 lua_pushliteral(L
, "AWESOME_VERSION");
842 lua_pushstring(L
, AWESOME_VERSION
);
843 lua_settable(L
, LUA_GLOBALSINDEX
);
845 lua_pushliteral(L
, "AWESOME_RELEASE");
846 lua_pushstring(L
, AWESOME_RELEASE
);
847 lua_settable(L
, LUA_GLOBALSINDEX
);
850 globalconf
.hooks
.manage
= LUA_REFNIL
;
851 globalconf
.hooks
.unmanage
= LUA_REFNIL
;
852 globalconf
.hooks
.focus
= LUA_REFNIL
;
853 globalconf
.hooks
.unfocus
= LUA_REFNIL
;
854 globalconf
.hooks
.mouse_enter
= LUA_REFNIL
;
855 globalconf
.hooks
.mouse_leave
= LUA_REFNIL
;
856 globalconf
.hooks
.arrange
= LUA_REFNIL
;
857 globalconf
.hooks
.clients
= LUA_REFNIL
;
858 globalconf
.hooks
.tags
= LUA_REFNIL
;
859 globalconf
.hooks
.tagged
= LUA_REFNIL
;
860 globalconf
.hooks
.property
= LUA_REFNIL
;
861 globalconf
.hooks
.timer
= LUA_REFNIL
;
863 globalconf
.hooks
.dbus
= LUA_REFNIL
;
866 /* add Lua lib path (/usr/share/awesome/lib by default) */
867 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?.lua\"");
868 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?/init.lua\"");
870 /* add XDG_CONFIG_DIR (/etc/xdg/awesome by default) as include path */
871 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?.lua\"");
872 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?/init.lua\"");
874 /* add either XDG_CONFIG_HOME/awesome or HOME/.config/awesome to path */
876 if((dir
= getenv("XDG_CONFIG_HOME")))
879 a_asprintf(&path
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"", dir
, dir
);
880 luaA_dostring(globalconf
.L
, path
);
885 char *path
, *homedir
= getenv("HOME");
887 "package.path = package.path .. \";%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?.lua;%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?/init.lua\"",
889 luaA_dostring(globalconf
.L
, path
);
893 /* add XDG_CONFIG_DIRS to include paths */
894 char *xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
897 if((len
= a_strlen(xdg_config_dirs
)))
899 char **buf
, **xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
901 for(buf
= xdg_files
; *buf
; buf
++)
904 a_asprintf(&confpath
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"",
906 luaA_dostring(globalconf
.L
, confpath
);
910 for(buf
= xdg_files
; *buf
; buf
++)
912 p_delete(&xdg_files
);
916 #define AWESOME_CONFIG_FILE "/awesome/rc.lua"
919 luaA_loadrc(const char *confpath
, bool run
)
923 if(!luaL_loadfile(globalconf
.L
, confpath
))
927 if(lua_pcall(globalconf
.L
, 0, LUA_MULTRET
, 0))
928 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
931 globalconf
.conffile
= a_strdup(confpath
);
936 lua_pop(globalconf
.L
, 1);
940 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
945 /** Load a configuration file.
946 * \param confpatharg The configuration file to load.
947 * \param run Run the configuration file.
950 luaA_parserc(const char *confpatharg
, bool run
)
953 const char *confdir
, *xdg_config_dirs
;
954 char *confpath
= NULL
, **xdg_files
= NULL
, **buf
;
958 /* try to load, return if it's ok */
959 if(luaA_loadrc(confpatharg
, run
))
965 if((confdir
= getenv("XDG_CONFIG_HOME")))
966 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, confdir
);
968 a_asprintf(&confpath
, "%s" XDG_CONFIG_HOME_DEFAULT AWESOME_CONFIG_FILE
, getenv("HOME"));
970 /* try to run XDG_CONFIG_HOME/awesome/rc.lua */
971 if(luaA_loadrc(confpath
, run
))
979 xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
981 if(!(len
= a_strlen(xdg_config_dirs
)))
983 xdg_config_dirs
= XDG_CONFIG_DIR
;
984 len
= sizeof(XDG_CONFIG_DIR
) - 1;
987 xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
989 for(buf
= xdg_files
; *buf
&& !ret
; buf
++)
991 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, *buf
);
992 if(luaA_loadrc(confpath
, run
))
1002 p_delete(&confpath
);
1006 for(buf
= xdg_files
; *buf
; buf
++)
1008 p_delete(&xdg_files
);
1011 /* Assure there's at least one tag */
1012 for(screen
= 0; screen
< globalconf
.nscreen
; screen
++)
1013 if(!globalconf
.screens
[screen
].tags
.len
)
1014 tag_append_to_screen(tag_new("default", sizeof("default") - 1),
1015 &globalconf
.screens
[screen
]);
1019 /** Parse a command.
1020 * \param cmd The buffer to parse.
1021 * \return the number of elements pushed on the stack by the last statement in cmd.
1022 * If there's an error, the message is pushed onto the stack and this returns 1.
1025 luaA_docmd(const char *cmd
)
1028 int newtop
, oldtop
= lua_gettop(globalconf
.L
);
1030 while((p
= strchr(cmd
, '\n')))
1032 newtop
= lua_gettop(globalconf
.L
);
1033 lua_pop(globalconf
.L
, newtop
- oldtop
);
1037 if (luaL_dostring(globalconf
.L
, cmd
))
1039 warn("error executing Lua code: %s", lua_tostring(globalconf
.L
, -1));
1044 return lua_gettop(globalconf
.L
) - oldtop
;
1047 /** Pushes a Lua array containing the top n elements of the stack.
1048 * \param n The number of elements to put in the array.
1054 lua_createtable(globalconf
.L
, n
, 0);
1055 lua_insert(globalconf
.L
, -n
- 1);
1057 for (i
= n
; i
> 0; i
--)
1058 lua_rawseti(globalconf
.L
, -i
- 1, i
);
1061 /** Maps the top n elements of the stack to the result of
1062 * applying a function to that element.
1063 * \param n The number of elements to map.
1065 * \lparam The function to map the elements by. This should be
1066 * at position -(n + 1).
1072 for (i
= 0; i
< n
; i
++)
1074 lua_pushvalue(globalconf
.L
, -n
- 1); /* copy of the function */
1075 lua_pushvalue(globalconf
.L
, -n
- 1); /* value to map */
1076 lua_pcall(globalconf
.L
, 1, 1, 0); /* call function */
1077 lua_remove(globalconf
.L
, -n
- 1); /* remove old value */
1079 lua_remove(globalconf
.L
, -n
- 1); /* remove function */
1082 static void luaA_conn_cleanup(EV_P_ ev_io
*w
)
1084 ev_ref(EV_DEFAULT_UC
);
1085 ev_io_stop(EV_DEFAULT_UC_ w
);
1087 warn("error closing UNIX domain socket: %s", strerror(errno
));
1092 luaA_cb(EV_P_ ev_io
*w
, int revents
)
1099 switch(r
= recv(w
->fd
, buf
, sizeof(buf
)-1, MSG_TRUNC
))
1102 warn("error reading UNIX domain socket: %s", strerror(errno
));
1103 case 0: /* 0 bytes are only transferred when the connection is closed */
1104 luaA_conn_cleanup(EV_DEFAULT_UC_ w
);
1107 if(r
>= ssizeof(buf
))
1110 lua_getglobal(globalconf
.L
, "table");
1111 lua_getfield(globalconf
.L
, -1, "concat");
1112 lua_remove(globalconf
.L
, -2); /* remove table */
1114 lua_getglobal(globalconf
.L
, "tostring");
1115 els
= luaA_docmd(buf
);
1116 luaA_map(els
); /* map results to strings */
1117 luaA_array(els
); /* put strings in an array */
1119 lua_pushstring(globalconf
.L
, "\t");
1120 lua_pcall(globalconf
.L
, 2, 1, 0); /* concatenate results with tabs */
1122 s
= lua_tolstring(globalconf
.L
, -1, &len
);
1124 /* ignore ENOENT because the client may not read */
1125 if (send(w
->fd
, s
, len
, MSG_DONTWAIT
) == -1)
1132 warn("can't send back to client via domain socket: %s", strerror(errno
));
1136 lua_pop(globalconf
.L
, 1); /* pop the string */
1138 awesome_refresh(globalconf
.connection
);
1143 luaA_conn_cb(EV_P_ ev_io
*w
, int revents
)
1145 ev_io
*csio_conn
= p_new(ev_io
, 1);
1146 int csfd
= accept(w
->fd
, NULL
, NULL
);
1148 ev_io_init(csio_conn
, &luaA_cb
, csfd
, EV_READ
);
1149 ev_io_start(EV_DEFAULT_UC_ csio_conn
);
1150 ev_unref(EV_DEFAULT_UC
);
1156 int csfd
= socket_getclient();
1158 if (csfd
< 0 || fcntl(csfd
, F_SETFD
, FD_CLOEXEC
) == -1)
1161 addr
= socket_getaddr(getenv("DISPLAY"));
1163 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1165 if(errno
== EADDRINUSE
)
1167 if(unlink(addr
->sun_path
))
1168 warn("error unlinking existing file: %s", strerror(errno
));
1169 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1170 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1173 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1177 ev_io_init(&csio
, &luaA_conn_cb
, csfd
, EV_READ
);
1178 ev_io_start(EV_DEFAULT_UC_
&csio
);
1179 ev_unref(EV_DEFAULT_UC
);
1183 luaA_cs_cleanup(void)
1187 ev_ref(EV_DEFAULT_UC
);
1188 ev_io_stop(EV_DEFAULT_UC_
&csio
);
1190 warn("error closing UNIX domain socket: %s", strerror(errno
));
1191 if(unlink(addr
->sun_path
))
1192 warn("error unlinking UNIX domain socket: %s", strerror(errno
));
1198 luaA_on_timer(EV_P_ ev_timer
*w
, int revents
)
1200 if(globalconf
.hooks
.timer
!= LUA_REFNIL
)
1201 luaA_dofunction(globalconf
.L
, globalconf
.hooks
.timer
, 0, 0);
1202 awesome_refresh(globalconf
.connection
);
1205 /** Push a color as a string onto the stack
1206 * \param L The Lua VM state.
1207 * \param c The color to push.
1208 * \return The number of elements pushed on stack.
1211 luaA_pushcolor(lua_State
*L
, const xcolor_t
*c
)
1213 uint8_t r
= (unsigned)c
->red
* 0xff / 0xffff;
1214 uint8_t g
= (unsigned)c
->green
* 0xff / 0xffff;
1215 uint8_t b
= (unsigned)c
->blue
* 0xff / 0xffff;
1216 uint8_t a
= (unsigned)c
->alpha
* 0xff / 0xffff;
1219 /* do not print alpha if it's full */
1221 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x", r
, g
, b
);
1223 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x%02x", r
, g
, b
, a
);
1224 lua_pushlstring(L
, s
, len
);