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_key_methods
[];
77 extern const struct luaL_reg awesome_key_meta
[];
78 extern const struct luaL_reg awesome_keybinding_methods
[];
80 static struct sockaddr_un
*addr
;
81 static ev_io csio
= { .fd
= -1 };
83 #define XDG_CONFIG_HOME_DEFAULT "/.config"
85 /** Get or set global mouse bindings.
86 * This binding will be available when you'll click on root window.
87 * \param L The Lua VM state.
88 * \return The number of element pushed on stack.
91 * \lparam An array of mouse button bindings objects, or nothing.
92 * \return The array of mouse button bindings objects of this client.
95 luaA_buttons(lua_State
*L
)
97 button_array_t
*buttons
= &globalconf
.buttons
;
99 if(lua_gettop(L
) == 1)
100 luaA_button_array_set(L
, 1, buttons
);
102 return luaA_button_array_get(L
, buttons
);
106 * \param L The Lua VM state.
107 * \return The number of elements pushed on stack.
110 luaA_quit(lua_State
*L
__attribute__ ((unused
)))
112 ev_unloop(globalconf
.loop
, 1);
116 /** Execute another application, probably a window manager, to replace
118 * \param L The Lua VM state.
119 * \return The number of elements pushed on stack.
121 * \lparam The command line to execute.
124 luaA_exec(lua_State
*L
)
126 const char *cmd
= luaL_checkstring(L
, 1);
137 luaA_restart(lua_State
*L
__attribute__ ((unused
)))
144 luaA_openlib(lua_State
*L
, const char *name
,
145 const struct luaL_reg methods
[],
146 const struct luaL_reg meta
[])
148 luaL_newmetatable(L
, name
); /* 1 */
149 lua_pushvalue(L
, -1); /* dup metatable 2 */
150 lua_setfield(L
, -2, "__index"); /* metatable.__index = metatable 1 */
152 luaL_register(L
, NULL
, meta
); /* 1 */
153 luaL_register(L
, name
, methods
); /* 2 */
154 lua_pushvalue(L
, -1); /* dup self as metatable 3 */
155 lua_setmetatable(L
, -2); /* set self as metatable 2 */
159 /** UTF-8 aware string length computing.
160 * \param L The Lua VM state.
161 * \return The number of elements pushed on stack.
164 luaA_mbstrlen(lua_State
*L
)
166 const char *cmd
= luaL_checkstring(L
, 1);
167 lua_pushnumber(L
, mbstowcs(NULL
, NONULL(cmd
), 0));
171 /** Overload standard Lua next function to use __next key on metatable.
172 * \param L The Lua VM state.
173 * \param The number of elements pushed on stack.
176 luaAe_next(lua_State
*L
)
178 if(luaL_getmetafield(L
, 1, "__next"))
181 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
182 return lua_gettop(L
);
185 luaL_checktype(L
, 1, LUA_TTABLE
);
193 /** Overload lua_next() function by using __next metatable field
194 * to get next elements.
195 * \param L The Lua VM stack.
196 * \param idx The index number of elements in stack.
197 * \return 1 if more elements to come, 0 otherwise.
200 luaA_next(lua_State
*L
, int idx
)
202 if(luaL_getmetafield(L
, idx
, "__next"))
204 /* if idx is relative, reduce it since we got __next */
206 /* copy table and then move key */
207 lua_pushvalue(L
, idx
);
208 lua_pushvalue(L
, -3);
210 lua_pcall(L
, 2, 2, 0);
211 /* next returned nil, it's the end */
220 else if(lua_istable(L
, idx
))
221 return lua_next(L
, idx
);
227 /** Generic pairs function.
228 * \param L The Lua VM state.
229 * \return The number of elements pushed on stack.
232 luaA_generic_pairs(lua_State
*L
)
234 lua_pushvalue(L
, lua_upvalueindex(1)); /* return generator, */
235 lua_pushvalue(L
, 1); /* state, */
236 lua_pushnil(L
); /* and initial value */
240 /** Overload standard pairs function to use __pairs field of metatables.
241 * \param L The Lua VM state.
242 * \return The number of elements pushed on stack.
245 luaAe_pairs(lua_State
*L
)
247 if(luaL_getmetafield(L
, 1, "__pairs"))
250 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
251 return lua_gettop(L
);
254 luaL_checktype(L
, 1, LUA_TTABLE
);
255 return luaA_generic_pairs(L
);
259 luaA_ipairs_aux(lua_State
*L
)
261 int i
= luaL_checkint(L
, 2) + 1;
262 luaL_checktype(L
, 1, LUA_TTABLE
);
263 lua_pushinteger(L
, i
);
264 lua_rawgeti(L
, 1, i
);
265 return (lua_isnil(L
, -1)) ? 0 : 2;
268 /** Overload standard ipairs function to use __ipairs field of metatables.
269 * \param L The Lua VM state.
270 * \return The number of elements pushed on stack.
273 luaAe_ipairs(lua_State
*L
)
275 if(luaL_getmetafield(L
, 1, "__ipairs"))
278 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
279 return lua_gettop(L
);
282 luaL_checktype(L
, 1, LUA_TTABLE
);
283 lua_pushvalue(L
, lua_upvalueindex(1));
285 lua_pushinteger(L
, 0); /* and initial value */
289 /** Enhanced type() function which recognize awesome objects.
290 * \param L The Lua VM state.
291 * \return The number of arguments pushed on the stack.
294 luaAe_type(lua_State
*L
)
297 #define CHECK_TYPE(type) \
299 if(luaA_toudata(L, 1, #type)) \
301 lua_pushliteral(L, #type); \
313 lua_pushstring(L
, luaL_typename(L
, 1));
317 /** Replace various standards Lua functions with our own.
318 * \param L The Lua VM state.
321 luaA_fixups(lua_State
*L
)
323 /* export string.wlen */
324 lua_getglobal(L
, "string");
325 lua_pushcfunction(L
, luaA_mbstrlen
);
326 lua_setfield(L
, -2, "wlen");
329 lua_pushliteral(L
, "next");
330 lua_pushcfunction(L
, luaAe_next
);
331 lua_settable(L
, LUA_GLOBALSINDEX
);
333 lua_pushliteral(L
, "pairs");
334 lua_pushcfunction(L
, luaAe_next
);
335 lua_pushcclosure(L
, luaAe_pairs
, 1); /* pairs get next as upvalue */
336 lua_settable(L
, LUA_GLOBALSINDEX
);
338 lua_pushliteral(L
, "ipairs");
339 lua_pushcfunction(L
, luaA_ipairs_aux
);
340 lua_pushcclosure(L
, luaAe_ipairs
, 1);
341 lua_settable(L
, LUA_GLOBALSINDEX
);
343 lua_pushliteral(L
, "type");
344 lua_pushcfunction(L
, luaAe_type
);
345 lua_settable(L
, LUA_GLOBALSINDEX
);
348 /** __next function for wtable objects.
349 * \param L The Lua VM state.
350 * \return The number of elements pushed on stack.
353 luaA_wtable_next(lua_State
*L
)
355 /* upvalue 1 is content table */
356 if(lua_next(L
, lua_upvalueindex(1)))
362 /** __ipairs function for wtable objects.
363 * \param L The Lua VM state.
364 * \return The number of elements pushed on stack.
367 luaA_wtable_ipairs(lua_State
*L
)
369 /* push ipairs_aux */
370 lua_pushvalue(L
, lua_upvalueindex(2));
371 /* push content table */
372 lua_pushvalue(L
, lua_upvalueindex(1));
373 lua_pushinteger(L
, 0); /* and initial value */
377 /** Index function of wtable objects.
378 * \param L The Lua VM state.
379 * \return The number of elements pushed on stack.
382 luaA_wtable_index(lua_State
*L
)
388 /* check for size, waiting lua 5.2 and __len on tables */
389 if((buf
= lua_tolstring(L
, -1, &len
)))
390 if(a_tokenize(buf
, len
) == A_TK_LEN
)
392 lua_pushnumber(L
, lua_objlen(L
, lua_upvalueindex(1)));
397 /* upvalue 1 is content table */
398 lua_rawget(L
, lua_upvalueindex(1));
402 /** Newndex function of wtable objects.
403 * \param L The Lua VM state.
404 * \return The number of elements pushed on stack.
407 luaA_wtable_newindex(lua_State
*L
)
409 bool invalid
= false;
411 /* push key on top */
413 /* get current key value in content table */
414 lua_rawget(L
, lua_upvalueindex(1));
415 /* if value is a widget, notify change */
416 if(lua_istable(L
, -1) || luaA_toudata(L
, -1, "widget"))
419 lua_pop(L
, 1); /* remove value */
421 /* if new value is a widget or a table */
422 if(lua_istable(L
, 3))
424 luaA_table2wtable(L
);
427 else if(!invalid
&& luaA_toudata(L
, 3, "widget"))
430 /* upvalue 1 is content table */
431 lua_rawset(L
, lua_upvalueindex(1));
434 luaA_wibox_invalidate_byitem(L
, lua_topointer(L
, 1));
439 /** Convert the top element of the stack to a proxied wtable.
440 * \param L The Lua VM state.
443 luaA_table2wtable(lua_State
*L
)
445 if(!lua_istable(L
, -1))
448 lua_newtable(L
); /* create *real* content table */
449 lua_newtable(L
); /* metatable */
450 lua_pushvalue(L
, -2); /* copy content table */
451 lua_pushcfunction(L
, luaA_ipairs_aux
); /* push ipairs aux */
452 lua_pushcclosure(L
, luaA_wtable_ipairs
, 2);
453 lua_pushvalue(L
, -3); /* copy content table */
454 lua_pushcclosure(L
, luaA_wtable_next
, 1); /* __next has the content table as upvalue */
455 lua_pushvalue(L
, -4); /* copy content table */
456 lua_pushcclosure(L
, luaA_wtable_index
, 1); /* __index has the content table as upvalue */
457 lua_pushvalue(L
, -5); /* copy content table */
458 lua_pushcclosure(L
, luaA_wtable_newindex
, 1); /* __newindex has the content table as upvalue */
459 /* set metatable field with just pushed closure */
460 lua_setfield(L
, -5, "__newindex");
461 lua_setfield(L
, -4, "__index");
462 lua_setfield(L
, -3, "__next");
463 lua_setfield(L
, -2, "__ipairs");
464 /* set metatable impossible to touch */
465 lua_pushliteral(L
, "wtable");
466 lua_setfield(L
, -2, "__metatable");
467 /* set new metatable on original table */
468 lua_setmetatable(L
, -3);
472 /* go through original table */
473 while(lua_next(L
, -3))
475 /* if convert value to wtable */
476 luaA_table2wtable(L
);
478 lua_pushvalue(L
, -2);
479 /* move key before value */
481 /* set same value in content table */
484 lua_pushvalue(L
, -1);
485 /* push the new value :-> */
487 /* set orig[k] = nil */
490 /* remove content table */
494 /** Look for an item: table, function, etc.
495 * \param L The Lua VM state.
496 * \param item The pointer item.
499 luaA_hasitem(lua_State
*L
, const void *item
)
502 while(luaA_next(L
, -2))
504 if(lua_topointer(L
, -1) == item
)
506 /* remove value and key */
510 if(lua_istable(L
, -1))
511 if(luaA_hasitem(L
, item
))
513 /* remove key and value */
523 /** Check if a table is a loop. When using table as direct acyclic digram,
525 * \param L The Lua VM state.
526 * \param idx The index of the table in the stack
527 * \return True if the table loops.
530 luaA_isloop(lua_State
*L
, int idx
)
532 if(lua_istable(L
, idx
))
534 lua_pushvalue(L
, idx
); /* push table on top */
535 if(luaA_hasitem(L
, lua_topointer(L
, -1)))
537 lua_pop(L
, 1); /* remove pushed table */
541 while(luaA_next(L
, -2))
543 /* check for recursivity */
544 if(luaA_isloop(L
, -1))
546 lua_pop(L
, 2); /* remove key and value */
549 lua_pop(L
, 1); /* remove value */
551 lua_pop(L
, 1); /* remove pushed table */
557 * This table can use safely object as key.
558 * \param L The Lua VM state.
559 * \return The number of elements pushed on stack.
562 luaA_otable_index(lua_State
*L
)
566 if((obj
= lua_touserdata(L
, 2)))
570 while(lua_next(L
, 1))
572 /* check the key against the key if the key is a userdata,
573 * otherwise check it again the value. */
574 if((v
= lua_touserdata(L
, -2))
578 else if((v
= lua_touserdata(L
, -1))
585 /* removes 'value'; keeps 'key' for next iteration */
596 * This table can use safely object as key.
597 * \param L The Lua VM state.
598 * \return The number of elements pushed on stack.
601 luaA_otable_newindex(lua_State
*L
)
605 if((obj
= lua_touserdata(L
, 2)))
609 while(lua_next(L
, 1))
611 if((v
= lua_touserdata(L
, -2))
616 /* push new value on top */
618 /* set in table key = value */
622 /* removes 'value'; keeps 'key' for next iteration */
633 * This function is multi-head (Zaphod) aware and will set display to
634 * the right screen according to mouse position.
635 * \param L The Lua VM state.
636 * \return The number of elements pushed on stack
638 * \lparam The command to launch.
639 * \lparam The optional screen number to spawn the command on.
642 luaA_spawn(lua_State
*L
)
644 char *host
, newdisplay
[128];
646 int screen
= 0, screenp
, displayp
;
648 if(lua_gettop(L
) == 2)
650 screen
= luaL_checknumber(L
, 2) - 1;
651 luaA_checkscreen(screen
);
654 cmd
= luaL_checkstring(L
, 1);
656 if(!globalconf
.xinerama_is_active
)
658 xcb_parse_display(NULL
, &host
, &displayp
, &screenp
);
659 snprintf(newdisplay
, sizeof(newdisplay
), "%s:%d.%d", host
, displayp
, screen
);
660 setenv("DISPLAY", newdisplay
, 1);
664 /* The double-fork construct avoids zombie processes and keeps the code
665 * clean from stupid signal handlers. */
670 if(globalconf
.connection
)
671 xcb_disconnect(globalconf
.connection
);
674 warn("execl '%s' failed: %s\n", cmd
, strerror(errno
));
683 /** awesome global table.
684 * \param L The Lua VM state.
685 * \return The number of elements pushed on stack.
687 * \lfield font The default font.
688 * \lfield conffile The configuration file which has been loaded.
691 luaA_awesome_index(lua_State
*L
)
693 if(luaA_usemetatable(L
, 1, 2))
697 const char *buf
= luaL_checklstring(L
, 2, &len
);
699 switch(a_tokenize(buf
, len
))
703 char *font
= pango_font_description_to_string(globalconf
.font
->desc
);
704 lua_pushstring(L
, font
);
709 lua_pushstring(L
, globalconf
.conffile
);
712 luaA_pushcolor(L
, &globalconf
.colors
.fg
);
715 luaA_pushcolor(L
, &globalconf
.colors
.bg
);
724 /** Newindex function for the awesome global table.
725 * \param L The Lua VM state.
726 * \return The number of elements pushed on stack.
729 luaA_awesome_newindex(lua_State
*L
)
731 if(luaA_usemetatable(L
, 1, 2))
735 const char *buf
= luaL_checklstring(L
, 2, &len
);
737 switch(a_tokenize(buf
, len
))
741 const char *newfont
= luaL_checkstring(L
, 3);
742 draw_font_delete(&globalconf
.font
);
743 globalconf
.font
= draw_font_new(newfont
);
747 if((buf
= luaL_checklstring(L
, 3, &len
)))
748 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.fg
, buf
, len
));
751 if((buf
= luaL_checklstring(L
, 3, &len
)))
752 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.bg
, buf
, len
));
761 /** Initialize the Lua VM
768 static const struct luaL_reg otable_methods
[] =
770 { "__call", luaA_otable_new
},
773 static const struct luaL_reg otable_meta
[] =
775 { "__index", luaA_otable_index
},
776 { "__newindex", luaA_otable_newindex
},
779 static const struct luaL_reg awesome_lib
[] =
781 { "quit", luaA_quit
},
782 { "exec", luaA_exec
},
783 { "spawn", luaA_spawn
},
784 { "restart", luaA_restart
},
785 { "buttons", luaA_buttons
},
786 { "__index", luaA_awesome_index
},
787 { "__newindex", luaA_awesome_newindex
},
791 L
= globalconf
.L
= luaL_newstate();
797 /* Export awesome lib */
798 luaA_openlib(L
, "awesome", awesome_lib
, awesome_lib
);
800 /* Export hooks lib */
801 luaL_register(L
, "hooks", awesome_hooks_lib
);
803 /* Export D-Bus lib */
804 luaL_register(L
, "dbus", awesome_dbus_lib
);
806 /* Export keygrabber lib */
807 luaL_register(L
, "keygrabber", awesome_keygrabber_lib
);
809 /* Export mousegrabber lib */
810 luaL_register(L
, "mousegrabber", awesome_mousegrabber_lib
);
812 /* Export otable lib */
813 luaA_openlib(L
, "otable", otable_methods
, otable_meta
);
816 luaA_openlib(L
, "screen", awesome_screen_methods
, awesome_screen_meta
);
819 luaA_openlib(L
, "mouse", awesome_mouse_methods
, awesome_mouse_meta
);
822 luaA_openlib(L
, "button", awesome_button_methods
, awesome_button_meta
);
825 luaA_openlib(L
, "image", awesome_image_methods
, awesome_image_meta
);
828 luaA_openlib(L
, "tag", awesome_tag_methods
, awesome_tag_meta
);
831 luaA_openlib(L
, "wibox", awesome_wibox_methods
, awesome_wibox_meta
);
834 luaA_openlib(L
, "widget", awesome_widget_methods
, awesome_widget_meta
);
837 luaA_openlib(L
, "client", awesome_client_methods
, awesome_client_meta
);
840 luaA_openlib(L
, "key", awesome_key_methods
, awesome_key_meta
);
841 luaA_openlib(L
, "keybinding", awesome_keybinding_methods
, awesome_key_meta
);
843 lua_pushliteral(L
, "AWESOME_VERSION");
844 lua_pushstring(L
, AWESOME_VERSION
);
845 lua_settable(L
, LUA_GLOBALSINDEX
);
847 lua_pushliteral(L
, "AWESOME_RELEASE");
848 lua_pushstring(L
, AWESOME_RELEASE
);
849 lua_settable(L
, LUA_GLOBALSINDEX
);
852 globalconf
.hooks
.manage
= LUA_REFNIL
;
853 globalconf
.hooks
.unmanage
= LUA_REFNIL
;
854 globalconf
.hooks
.focus
= LUA_REFNIL
;
855 globalconf
.hooks
.unfocus
= LUA_REFNIL
;
856 globalconf
.hooks
.mouse_enter
= LUA_REFNIL
;
857 globalconf
.hooks
.mouse_leave
= LUA_REFNIL
;
858 globalconf
.hooks
.arrange
= LUA_REFNIL
;
859 globalconf
.hooks
.clients
= LUA_REFNIL
;
860 globalconf
.hooks
.tags
= LUA_REFNIL
;
861 globalconf
.hooks
.tagged
= LUA_REFNIL
;
862 globalconf
.hooks
.property
= LUA_REFNIL
;
863 globalconf
.hooks
.timer
= LUA_REFNIL
;
865 globalconf
.hooks
.dbus
= LUA_REFNIL
;
868 /* add Lua lib path (/usr/share/awesome/lib by default) */
869 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?.lua\"");
870 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?/init.lua\"");
872 /* add XDG_CONFIG_DIR (/etc/xdg/awesome by default) as include path */
873 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?.lua\"");
874 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?/init.lua\"");
876 /* add either XDG_CONFIG_HOME/awesome or HOME/.config/awesome to path */
878 if((dir
= getenv("XDG_CONFIG_HOME")))
881 a_asprintf(&path
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"", dir
, dir
);
882 luaA_dostring(globalconf
.L
, path
);
887 char *path
, *homedir
= getenv("HOME");
889 "package.path = package.path .. \";%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?.lua;%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?/init.lua\"",
891 luaA_dostring(globalconf
.L
, path
);
895 /* add XDG_CONFIG_DIRS to include paths */
896 char *xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
899 if((len
= a_strlen(xdg_config_dirs
)))
901 char **buf
, **xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
903 for(buf
= xdg_files
; *buf
; buf
++)
906 a_asprintf(&confpath
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"",
908 luaA_dostring(globalconf
.L
, confpath
);
912 for(buf
= xdg_files
; *buf
; buf
++)
914 p_delete(&xdg_files
);
918 #define AWESOME_CONFIG_FILE "/awesome/rc.lua"
921 luaA_loadrc(const char *confpath
, bool run
)
925 if(!luaL_loadfile(globalconf
.L
, confpath
))
929 if(lua_pcall(globalconf
.L
, 0, LUA_MULTRET
, 0))
930 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
933 globalconf
.conffile
= a_strdup(confpath
);
938 lua_pop(globalconf
.L
, 1);
942 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
947 /** Load a configuration file.
948 * \param confpatharg The configuration file to load.
949 * \param run Run the configuration file.
952 luaA_parserc(const char *confpatharg
, bool run
)
955 const char *confdir
, *xdg_config_dirs
;
956 char *confpath
= NULL
, **xdg_files
= NULL
, **buf
;
960 /* try to load, return if it's ok */
961 if(luaA_loadrc(confpatharg
, run
))
967 if((confdir
= getenv("XDG_CONFIG_HOME")))
968 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, confdir
);
970 a_asprintf(&confpath
, "%s" XDG_CONFIG_HOME_DEFAULT AWESOME_CONFIG_FILE
, getenv("HOME"));
972 /* try to run XDG_CONFIG_HOME/awesome/rc.lua */
973 if(luaA_loadrc(confpath
, run
))
981 xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
983 if(!(len
= a_strlen(xdg_config_dirs
)))
985 xdg_config_dirs
= XDG_CONFIG_DIR
;
986 len
= sizeof(XDG_CONFIG_DIR
) - 1;
989 xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
991 for(buf
= xdg_files
; *buf
&& !ret
; buf
++)
993 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, *buf
);
994 if(luaA_loadrc(confpath
, run
))
1004 p_delete(&confpath
);
1008 for(buf
= xdg_files
; *buf
; buf
++)
1010 p_delete(&xdg_files
);
1013 /* Assure there's at least one tag */
1014 for(screen
= 0; screen
< globalconf
.nscreen
; screen
++)
1015 if(!globalconf
.screens
[screen
].tags
.len
)
1016 tag_append_to_screen(tag_new("default", sizeof("default") - 1),
1017 &globalconf
.screens
[screen
]);
1021 /** Parse a command.
1022 * \param cmd The buffer to parse.
1023 * \return the number of elements pushed on the stack by the last statement in cmd.
1024 * If there's an error, the message is pushed onto the stack and this returns 1.
1027 luaA_docmd(const char *cmd
)
1030 int newtop
, oldtop
= lua_gettop(globalconf
.L
);
1032 while((p
= strchr(cmd
, '\n')))
1034 newtop
= lua_gettop(globalconf
.L
);
1035 lua_pop(globalconf
.L
, newtop
- oldtop
);
1039 if (luaL_dostring(globalconf
.L
, cmd
))
1041 warn("error executing Lua code: %s", lua_tostring(globalconf
.L
, -1));
1046 return lua_gettop(globalconf
.L
) - oldtop
;
1049 /** Pushes a Lua array containing the top n elements of the stack.
1050 * \param n The number of elements to put in the array.
1056 lua_createtable(globalconf
.L
, n
, 0);
1057 lua_insert(globalconf
.L
, -n
- 1);
1059 for (i
= n
; i
> 0; i
--)
1060 lua_rawseti(globalconf
.L
, -i
- 1, i
);
1063 /** Maps the top n elements of the stack to the result of
1064 * applying a function to that element.
1065 * \param n The number of elements to map.
1067 * \lparam The function to map the elements by. This should be
1068 * at position -(n + 1).
1074 for (i
= 0; i
< n
; i
++)
1076 lua_pushvalue(globalconf
.L
, -n
- 1); /* copy of the function */
1077 lua_pushvalue(globalconf
.L
, -n
- 1); /* value to map */
1078 lua_pcall(globalconf
.L
, 1, 1, 0); /* call function */
1079 lua_remove(globalconf
.L
, -n
- 1); /* remove old value */
1081 lua_remove(globalconf
.L
, -n
- 1); /* remove function */
1084 static void luaA_conn_cleanup(EV_P_ ev_io
*w
)
1086 ev_ref(EV_DEFAULT_UC
);
1087 ev_io_stop(EV_DEFAULT_UC_ w
);
1089 warn("error closing UNIX domain socket: %s", strerror(errno
));
1094 luaA_cb(EV_P_ ev_io
*w
, int revents
)
1101 switch(r
= recv(w
->fd
, buf
, sizeof(buf
)-1, MSG_TRUNC
))
1104 warn("error reading UNIX domain socket: %s", strerror(errno
));
1105 case 0: /* 0 bytes are only transferred when the connection is closed */
1106 luaA_conn_cleanup(EV_DEFAULT_UC_ w
);
1109 if(r
>= ssizeof(buf
))
1112 lua_getglobal(globalconf
.L
, "table");
1113 lua_getfield(globalconf
.L
, -1, "concat");
1114 lua_remove(globalconf
.L
, -2); /* remove table */
1116 lua_getglobal(globalconf
.L
, "tostring");
1117 els
= luaA_docmd(buf
);
1118 luaA_map(els
); /* map results to strings */
1119 luaA_array(els
); /* put strings in an array */
1121 lua_pushstring(globalconf
.L
, "\t");
1122 lua_pcall(globalconf
.L
, 2, 1, 0); /* concatenate results with tabs */
1124 s
= lua_tolstring(globalconf
.L
, -1, &len
);
1126 /* ignore ENOENT because the client may not read */
1127 if (send(w
->fd
, s
, len
, MSG_DONTWAIT
) == -1)
1134 warn("can't send back to client via domain socket: %s", strerror(errno
));
1138 lua_pop(globalconf
.L
, 1); /* pop the string */
1140 awesome_refresh(globalconf
.connection
);
1145 luaA_conn_cb(EV_P_ ev_io
*w
, int revents
)
1147 ev_io
*csio_conn
= p_new(ev_io
, 1);
1148 int csfd
= accept(w
->fd
, NULL
, NULL
);
1150 ev_io_init(csio_conn
, &luaA_cb
, csfd
, EV_READ
);
1151 ev_io_start(EV_DEFAULT_UC_ csio_conn
);
1152 ev_unref(EV_DEFAULT_UC
);
1158 int csfd
= socket_getclient();
1160 if (csfd
< 0 || fcntl(csfd
, F_SETFD
, FD_CLOEXEC
) == -1)
1163 addr
= socket_getaddr(getenv("DISPLAY"));
1165 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1167 if(errno
== EADDRINUSE
)
1169 if(unlink(addr
->sun_path
))
1170 warn("error unlinking existing file: %s", strerror(errno
));
1171 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1172 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1175 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1179 ev_io_init(&csio
, &luaA_conn_cb
, csfd
, EV_READ
);
1180 ev_io_start(EV_DEFAULT_UC_
&csio
);
1181 ev_unref(EV_DEFAULT_UC
);
1185 luaA_cs_cleanup(void)
1189 ev_ref(EV_DEFAULT_UC
);
1190 ev_io_stop(EV_DEFAULT_UC_
&csio
);
1192 warn("error closing UNIX domain socket: %s", strerror(errno
));
1193 if(unlink(addr
->sun_path
))
1194 warn("error unlinking UNIX domain socket: %s", strerror(errno
));
1200 luaA_on_timer(EV_P_ ev_timer
*w
, int revents
)
1202 if(globalconf
.hooks
.timer
!= LUA_REFNIL
)
1203 luaA_dofunction(globalconf
.L
, globalconf
.hooks
.timer
, 0, 0);
1204 awesome_refresh(globalconf
.connection
);
1207 /** Push a color as a string onto the stack
1208 * \param L The Lua VM state.
1209 * \param c The color to push.
1210 * \return The number of elements pushed on stack.
1213 luaA_pushcolor(lua_State
*L
, const xcolor_t
*c
)
1215 uint8_t r
= (unsigned)c
->red
* 0xff / 0xffff;
1216 uint8_t g
= (unsigned)c
->green
* 0xff / 0xffff;
1217 uint8_t b
= (unsigned)c
->blue
* 0xff / 0xffff;
1218 uint8_t a
= (unsigned)c
->alpha
* 0xff / 0xffff;
1221 /* do not print alpha if it's full */
1223 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x", r
, g
, b
);
1225 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x%02x", r
, g
, b
, a
);
1226 lua_pushlstring(L
, s
, len
);