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
[];
79 extern const struct luaL_reg awesome_selection_methods
[];
80 extern const struct luaL_reg awesome_selection_meta
[];
82 static struct sockaddr_un
*addr
;
83 static ev_io csio
= { .fd
= -1 };
85 #define XDG_CONFIG_HOME_DEFAULT "/.config"
87 /** Get or set global mouse bindings.
88 * This binding will be available when you'll click on root window.
89 * \param L The Lua VM state.
90 * \return The number of element pushed on stack.
93 * \lparam An array of mouse button bindings objects, or nothing.
94 * \return The array of mouse button bindings objects of this client.
97 luaA_buttons(lua_State
*L
)
99 button_array_t
*buttons
= &globalconf
.buttons
;
101 if(lua_gettop(L
) == 1)
102 luaA_button_array_set(L
, 1, buttons
);
104 return luaA_button_array_get(L
, buttons
);
108 * \param L The Lua VM state.
109 * \return The number of elements pushed on stack.
112 luaA_quit(lua_State
*L
__attribute__ ((unused
)))
114 ev_unloop(globalconf
.loop
, 1);
118 /** Execute another application, probably a window manager, to replace
120 * \param L The Lua VM state.
121 * \return The number of elements pushed on stack.
123 * \lparam The command line to execute.
126 luaA_exec(lua_State
*L
)
128 const char *cmd
= luaL_checkstring(L
, 1);
139 luaA_restart(lua_State
*L
__attribute__ ((unused
)))
146 luaA_openlib(lua_State
*L
, const char *name
,
147 const struct luaL_reg methods
[],
148 const struct luaL_reg meta
[])
150 luaL_newmetatable(L
, name
); /* 1 */
151 lua_pushvalue(L
, -1); /* dup metatable 2 */
152 lua_setfield(L
, -2, "__index"); /* metatable.__index = metatable 1 */
154 luaL_register(L
, NULL
, meta
); /* 1 */
155 luaL_register(L
, name
, methods
); /* 2 */
156 lua_pushvalue(L
, -1); /* dup self as metatable 3 */
157 lua_setmetatable(L
, -2); /* set self as metatable 2 */
161 /** UTF-8 aware string length computing.
162 * \param L The Lua VM state.
163 * \return The number of elements pushed on stack.
166 luaA_mbstrlen(lua_State
*L
)
168 const char *cmd
= luaL_checkstring(L
, 1);
169 lua_pushnumber(L
, mbstowcs(NULL
, NONULL(cmd
), 0));
173 /** Overload standard Lua next function to use __next key on metatable.
174 * \param L The Lua VM state.
175 * \param The number of elements pushed on stack.
178 luaAe_next(lua_State
*L
)
180 if(luaL_getmetafield(L
, 1, "__next"))
183 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
184 return lua_gettop(L
);
187 luaL_checktype(L
, 1, LUA_TTABLE
);
195 /** Overload lua_next() function by using __next metatable field
196 * to get next elements.
197 * \param L The Lua VM stack.
198 * \param idx The index number of elements in stack.
199 * \return 1 if more elements to come, 0 otherwise.
202 luaA_next(lua_State
*L
, int idx
)
204 if(luaL_getmetafield(L
, idx
, "__next"))
206 /* if idx is relative, reduce it since we got __next */
208 /* copy table and then move key */
209 lua_pushvalue(L
, idx
);
210 lua_pushvalue(L
, -3);
212 lua_pcall(L
, 2, 2, 0);
213 /* next returned nil, it's the end */
222 else if(lua_istable(L
, idx
))
223 return lua_next(L
, idx
);
229 /** Generic pairs function.
230 * \param L The Lua VM state.
231 * \return The number of elements pushed on stack.
234 luaA_generic_pairs(lua_State
*L
)
236 lua_pushvalue(L
, lua_upvalueindex(1)); /* return generator, */
237 lua_pushvalue(L
, 1); /* state, */
238 lua_pushnil(L
); /* and initial value */
242 /** Overload standard pairs function to use __pairs field of metatables.
243 * \param L The Lua VM state.
244 * \return The number of elements pushed on stack.
247 luaAe_pairs(lua_State
*L
)
249 if(luaL_getmetafield(L
, 1, "__pairs"))
252 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
253 return lua_gettop(L
);
256 luaL_checktype(L
, 1, LUA_TTABLE
);
257 return luaA_generic_pairs(L
);
261 luaA_ipairs_aux(lua_State
*L
)
263 int i
= luaL_checkint(L
, 2) + 1;
264 luaL_checktype(L
, 1, LUA_TTABLE
);
265 lua_pushinteger(L
, i
);
266 lua_rawgeti(L
, 1, i
);
267 return (lua_isnil(L
, -1)) ? 0 : 2;
270 /** Overload standard ipairs function to use __ipairs field of metatables.
271 * \param L The Lua VM state.
272 * \return The number of elements pushed on stack.
275 luaAe_ipairs(lua_State
*L
)
277 if(luaL_getmetafield(L
, 1, "__ipairs"))
280 lua_call(L
, lua_gettop(L
) - 1, LUA_MULTRET
);
281 return lua_gettop(L
);
284 luaL_checktype(L
, 1, LUA_TTABLE
);
285 lua_pushvalue(L
, lua_upvalueindex(1));
287 lua_pushinteger(L
, 0); /* and initial value */
291 /** Enhanced type() function which recognize awesome objects.
292 * \param L The Lua VM state.
293 * \return The number of arguments pushed on the stack.
296 luaAe_type(lua_State
*L
)
299 #define CHECK_TYPE(type) \
301 if(luaA_toudata(L, 1, #type)) \
303 lua_pushliteral(L, #type); \
315 lua_pushstring(L
, luaL_typename(L
, 1));
319 /** Replace various standards Lua functions with our own.
320 * \param L The Lua VM state.
323 luaA_fixups(lua_State
*L
)
325 /* export string.wlen */
326 lua_getglobal(L
, "string");
327 lua_pushcfunction(L
, luaA_mbstrlen
);
328 lua_setfield(L
, -2, "wlen");
331 lua_pushliteral(L
, "next");
332 lua_pushcfunction(L
, luaAe_next
);
333 lua_settable(L
, LUA_GLOBALSINDEX
);
335 lua_pushliteral(L
, "pairs");
336 lua_pushcfunction(L
, luaAe_next
);
337 lua_pushcclosure(L
, luaAe_pairs
, 1); /* pairs get next as upvalue */
338 lua_settable(L
, LUA_GLOBALSINDEX
);
340 lua_pushliteral(L
, "ipairs");
341 lua_pushcfunction(L
, luaA_ipairs_aux
);
342 lua_pushcclosure(L
, luaAe_ipairs
, 1);
343 lua_settable(L
, LUA_GLOBALSINDEX
);
345 lua_pushliteral(L
, "type");
346 lua_pushcfunction(L
, luaAe_type
);
347 lua_settable(L
, LUA_GLOBALSINDEX
);
350 /** __next function for wtable objects.
351 * \param L The Lua VM state.
352 * \return The number of elements pushed on stack.
355 luaA_wtable_next(lua_State
*L
)
357 /* upvalue 1 is content table */
358 if(lua_next(L
, lua_upvalueindex(1)))
364 /** __ipairs function for wtable objects.
365 * \param L The Lua VM state.
366 * \return The number of elements pushed on stack.
369 luaA_wtable_ipairs(lua_State
*L
)
371 /* push ipairs_aux */
372 lua_pushvalue(L
, lua_upvalueindex(2));
373 /* push content table */
374 lua_pushvalue(L
, lua_upvalueindex(1));
375 lua_pushinteger(L
, 0); /* and initial value */
379 /** Index function of wtable objects.
380 * \param L The Lua VM state.
381 * \return The number of elements pushed on stack.
384 luaA_wtable_index(lua_State
*L
)
390 /* check for size, waiting lua 5.2 and __len on tables */
391 if((buf
= lua_tolstring(L
, -1, &len
)))
392 if(a_tokenize(buf
, len
) == A_TK_LEN
)
394 lua_pushnumber(L
, lua_objlen(L
, lua_upvalueindex(1)));
399 /* upvalue 1 is content table */
400 lua_rawget(L
, lua_upvalueindex(1));
404 /** Newndex function of wtable objects.
405 * \param L The Lua VM state.
406 * \return The number of elements pushed on stack.
409 luaA_wtable_newindex(lua_State
*L
)
411 bool invalid
= false;
413 /* push key on top */
415 /* get current key value in content table */
416 lua_rawget(L
, lua_upvalueindex(1));
417 /* if value is a widget, notify change */
418 if(lua_istable(L
, -1) || luaA_toudata(L
, -1, "widget"))
421 lua_pop(L
, 1); /* remove value */
423 /* if new value is a widget or a table */
424 if(lua_istable(L
, 3))
426 luaA_table2wtable(L
);
429 else if(!invalid
&& luaA_toudata(L
, 3, "widget"))
432 /* upvalue 1 is content table */
433 lua_rawset(L
, lua_upvalueindex(1));
436 luaA_wibox_invalidate_byitem(L
, lua_topointer(L
, 1));
441 /** Convert the top element of the stack to a proxied wtable.
442 * \param L The Lua VM state.
445 luaA_table2wtable(lua_State
*L
)
447 if(!lua_istable(L
, -1))
450 lua_newtable(L
); /* create *real* content table */
451 lua_newtable(L
); /* metatable */
452 lua_pushvalue(L
, -2); /* copy content table */
453 lua_pushcfunction(L
, luaA_ipairs_aux
); /* push ipairs aux */
454 lua_pushcclosure(L
, luaA_wtable_ipairs
, 2);
455 lua_pushvalue(L
, -3); /* copy content table */
456 lua_pushcclosure(L
, luaA_wtable_next
, 1); /* __next has the content table as upvalue */
457 lua_pushvalue(L
, -4); /* copy content table */
458 lua_pushcclosure(L
, luaA_wtable_index
, 1); /* __index has the content table as upvalue */
459 lua_pushvalue(L
, -5); /* copy content table */
460 lua_pushcclosure(L
, luaA_wtable_newindex
, 1); /* __newindex has the content table as upvalue */
461 /* set metatable field with just pushed closure */
462 lua_setfield(L
, -5, "__newindex");
463 lua_setfield(L
, -4, "__index");
464 lua_setfield(L
, -3, "__next");
465 lua_setfield(L
, -2, "__ipairs");
466 /* set metatable impossible to touch */
467 lua_pushliteral(L
, "wtable");
468 lua_setfield(L
, -2, "__metatable");
469 /* set new metatable on original table */
470 lua_setmetatable(L
, -3);
474 /* go through original table */
475 while(lua_next(L
, -3))
477 /* if convert value to wtable */
478 luaA_table2wtable(L
);
480 lua_pushvalue(L
, -2);
481 /* move key before value */
483 /* set same value in content table */
486 lua_pushvalue(L
, -1);
487 /* push the new value :-> */
489 /* set orig[k] = nil */
492 /* remove content table */
496 /** Look for an item: table, function, etc.
497 * \param L The Lua VM state.
498 * \param item The pointer item.
501 luaA_hasitem(lua_State
*L
, const void *item
)
504 while(luaA_next(L
, -2))
506 if(lua_topointer(L
, -1) == item
)
508 /* remove value and key */
512 if(lua_istable(L
, -1))
513 if(luaA_hasitem(L
, item
))
515 /* remove key and value */
525 /** Check if a table is a loop. When using table as direct acyclic digram,
527 * \param L The Lua VM state.
528 * \param idx The index of the table in the stack
529 * \return True if the table loops.
532 luaA_isloop(lua_State
*L
, int idx
)
534 if(lua_istable(L
, idx
))
536 lua_pushvalue(L
, idx
); /* push table on top */
537 if(luaA_hasitem(L
, lua_topointer(L
, -1)))
539 lua_pop(L
, 1); /* remove pushed table */
543 while(luaA_next(L
, -2))
545 /* check for recursivity */
546 if(luaA_isloop(L
, -1))
548 lua_pop(L
, 2); /* remove key and value */
551 lua_pop(L
, 1); /* remove value */
553 lua_pop(L
, 1); /* remove pushed table */
559 * This table can use safely object as key.
560 * \param L The Lua VM state.
561 * \return The number of elements pushed on stack.
564 luaA_otable_index(lua_State
*L
)
568 if((obj
= lua_touserdata(L
, 2)))
572 while(lua_next(L
, 1))
574 /* check the key against the key if the key is a userdata,
575 * otherwise check it again the value. */
576 if((v
= lua_touserdata(L
, -2))
580 else if((v
= lua_touserdata(L
, -1))
587 /* removes 'value'; keeps 'key' for next iteration */
598 * This table can use safely object as key.
599 * \param L The Lua VM state.
600 * \return The number of elements pushed on stack.
603 luaA_otable_newindex(lua_State
*L
)
607 if((obj
= lua_touserdata(L
, 2)))
611 while(lua_next(L
, 1))
613 if((v
= lua_touserdata(L
, -2))
618 /* push new value on top */
620 /* set in table key = value */
624 /* removes 'value'; keeps 'key' for next iteration */
635 * This function is multi-head (Zaphod) aware and will set display to
636 * the right screen according to mouse position.
637 * \param L The Lua VM state.
638 * \return The number of elements pushed on stack
640 * \lparam The command to launch.
641 * \lparam The optional screen number to spawn the command on.
644 luaA_spawn(lua_State
*L
)
646 char *host
, newdisplay
[128];
648 int screen
= 0, screenp
, displayp
;
650 if(lua_gettop(L
) == 2)
652 screen
= luaL_checknumber(L
, 2) - 1;
653 luaA_checkscreen(screen
);
656 cmd
= luaL_checkstring(L
, 1);
658 if(!globalconf
.xinerama_is_active
)
660 xcb_parse_display(NULL
, &host
, &displayp
, &screenp
);
661 snprintf(newdisplay
, sizeof(newdisplay
), "%s:%d.%d", host
, displayp
, screen
);
662 setenv("DISPLAY", newdisplay
, 1);
666 /* The double-fork construct avoids zombie processes and keeps the code
667 * clean from stupid signal handlers. */
672 if(globalconf
.connection
)
673 xcb_disconnect(globalconf
.connection
);
676 warn("execl '%s' failed: %s\n", cmd
, strerror(errno
));
685 /** awesome global table.
686 * \param L The Lua VM state.
687 * \return The number of elements pushed on stack.
689 * \lfield font The default font.
690 * \lfield conffile The configuration file which has been loaded.
693 luaA_awesome_index(lua_State
*L
)
695 if(luaA_usemetatable(L
, 1, 2))
699 const char *buf
= luaL_checklstring(L
, 2, &len
);
701 switch(a_tokenize(buf
, len
))
705 char *font
= pango_font_description_to_string(globalconf
.font
->desc
);
706 lua_pushstring(L
, font
);
711 lua_pushstring(L
, globalconf
.conffile
);
714 luaA_pushcolor(L
, &globalconf
.colors
.fg
);
717 luaA_pushcolor(L
, &globalconf
.colors
.bg
);
726 /** Newindex function for the awesome global table.
727 * \param L The Lua VM state.
728 * \return The number of elements pushed on stack.
731 luaA_awesome_newindex(lua_State
*L
)
733 if(luaA_usemetatable(L
, 1, 2))
737 const char *buf
= luaL_checklstring(L
, 2, &len
);
739 switch(a_tokenize(buf
, len
))
743 const char *newfont
= luaL_checkstring(L
, 3);
744 draw_font_delete(&globalconf
.font
);
745 globalconf
.font
= draw_font_new(newfont
);
749 if((buf
= luaL_checklstring(L
, 3, &len
)))
750 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.fg
, buf
, len
));
753 if((buf
= luaL_checklstring(L
, 3, &len
)))
754 xcolor_init_reply(xcolor_init_unchecked(&globalconf
.colors
.bg
, buf
, len
));
763 /** Initialize the Lua VM
770 static const struct luaL_reg otable_methods
[] =
772 { "__call", luaA_otable_new
},
775 static const struct luaL_reg otable_meta
[] =
777 { "__index", luaA_otable_index
},
778 { "__newindex", luaA_otable_newindex
},
781 static const struct luaL_reg awesome_lib
[] =
783 { "quit", luaA_quit
},
784 { "exec", luaA_exec
},
785 { "spawn", luaA_spawn
},
786 { "restart", luaA_restart
},
787 { "buttons", luaA_buttons
},
788 { "__index", luaA_awesome_index
},
789 { "__newindex", luaA_awesome_newindex
},
793 L
= globalconf
.L
= luaL_newstate();
799 /* Export awesome lib */
800 luaA_openlib(L
, "awesome", awesome_lib
, awesome_lib
);
802 /* Export hooks lib */
803 luaL_register(L
, "hooks", awesome_hooks_lib
);
805 /* Export D-Bus lib */
806 luaL_register(L
, "dbus", awesome_dbus_lib
);
808 /* Export keygrabber lib */
809 luaL_register(L
, "keygrabber", awesome_keygrabber_lib
);
811 /* Export mousegrabber lib */
812 luaL_register(L
, "mousegrabber", awesome_mousegrabber_lib
);
814 /* Export otable lib */
815 luaA_openlib(L
, "otable", otable_methods
, otable_meta
);
818 luaA_openlib(L
, "screen", awesome_screen_methods
, awesome_screen_meta
);
821 luaA_openlib(L
, "mouse", awesome_mouse_methods
, awesome_mouse_meta
);
824 luaA_openlib(L
, "button", awesome_button_methods
, awesome_button_meta
);
827 luaA_openlib(L
, "image", awesome_image_methods
, awesome_image_meta
);
830 luaA_openlib(L
, "tag", awesome_tag_methods
, awesome_tag_meta
);
833 luaA_openlib(L
, "wibox", awesome_wibox_methods
, awesome_wibox_meta
);
836 luaA_openlib(L
, "widget", awesome_widget_methods
, awesome_widget_meta
);
839 luaA_openlib(L
, "client", awesome_client_methods
, awesome_client_meta
);
842 luaA_openlib(L
, "key", awesome_key_methods
, awesome_key_meta
);
843 luaA_openlib(L
, "keybinding", awesome_keybinding_methods
, awesome_key_meta
);
845 /* Export selection */
846 luaA_openlib(L
, "selection", awesome_selection_methods
, awesome_selection_meta
);
848 lua_pushliteral(L
, "AWESOME_VERSION");
849 lua_pushstring(L
, AWESOME_VERSION
);
850 lua_settable(L
, LUA_GLOBALSINDEX
);
852 lua_pushliteral(L
, "AWESOME_RELEASE");
853 lua_pushstring(L
, AWESOME_RELEASE
);
854 lua_settable(L
, LUA_GLOBALSINDEX
);
857 globalconf
.hooks
.manage
= LUA_REFNIL
;
858 globalconf
.hooks
.unmanage
= LUA_REFNIL
;
859 globalconf
.hooks
.focus
= LUA_REFNIL
;
860 globalconf
.hooks
.unfocus
= LUA_REFNIL
;
861 globalconf
.hooks
.mouse_enter
= LUA_REFNIL
;
862 globalconf
.hooks
.mouse_leave
= LUA_REFNIL
;
863 globalconf
.hooks
.arrange
= LUA_REFNIL
;
864 globalconf
.hooks
.clients
= LUA_REFNIL
;
865 globalconf
.hooks
.tags
= LUA_REFNIL
;
866 globalconf
.hooks
.tagged
= LUA_REFNIL
;
867 globalconf
.hooks
.property
= LUA_REFNIL
;
868 globalconf
.hooks
.timer
= LUA_REFNIL
;
870 globalconf
.hooks
.dbus
= LUA_REFNIL
;
873 /* add Lua lib path (/usr/share/awesome/lib by default) */
874 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?.lua\"");
875 luaA_dostring(L
, "package.path = package.path .. \";" AWESOME_LUA_LIB_PATH
"/?/init.lua\"");
877 /* add XDG_CONFIG_DIR (/etc/xdg/awesome by default) as include path */
878 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?.lua\"");
879 luaA_dostring(L
, "package.path = package.path .. \";" XDG_CONFIG_DIR
"/awesome/?/init.lua\"");
881 /* add either XDG_CONFIG_HOME/awesome or HOME/.config/awesome to path */
883 if((dir
= getenv("XDG_CONFIG_HOME")))
886 a_asprintf(&path
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"", dir
, dir
);
887 luaA_dostring(globalconf
.L
, path
);
892 char *path
, *homedir
= getenv("HOME");
894 "package.path = package.path .. \";%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?.lua;%s" XDG_CONFIG_HOME_DEFAULT
"/awesome/?/init.lua\"",
896 luaA_dostring(globalconf
.L
, path
);
900 /* add XDG_CONFIG_DIRS to include paths */
901 char *xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
904 if((len
= a_strlen(xdg_config_dirs
)))
906 char **buf
, **xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
908 for(buf
= xdg_files
; *buf
; buf
++)
911 a_asprintf(&confpath
, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"",
913 luaA_dostring(globalconf
.L
, confpath
);
917 for(buf
= xdg_files
; *buf
; buf
++)
919 p_delete(&xdg_files
);
923 #define AWESOME_CONFIG_FILE "/awesome/rc.lua"
926 luaA_loadrc(const char *confpath
, bool run
)
930 if(!luaL_loadfile(globalconf
.L
, confpath
))
934 if(lua_pcall(globalconf
.L
, 0, LUA_MULTRET
, 0))
935 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
938 globalconf
.conffile
= a_strdup(confpath
);
943 lua_pop(globalconf
.L
, 1);
947 fprintf(stderr
, "%s\n", lua_tostring(globalconf
.L
, -1));
952 /** Load a configuration file.
953 * \param confpatharg The configuration file to load.
954 * \param run Run the configuration file.
957 luaA_parserc(const char *confpatharg
, bool run
)
960 const char *confdir
, *xdg_config_dirs
;
961 char *confpath
= NULL
, **xdg_files
= NULL
, **buf
;
965 /* try to load, return if it's ok */
966 if(luaA_loadrc(confpatharg
, run
))
972 if((confdir
= getenv("XDG_CONFIG_HOME")))
973 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, confdir
);
975 a_asprintf(&confpath
, "%s" XDG_CONFIG_HOME_DEFAULT AWESOME_CONFIG_FILE
, getenv("HOME"));
977 /* try to run XDG_CONFIG_HOME/awesome/rc.lua */
978 if(luaA_loadrc(confpath
, run
))
986 xdg_config_dirs
= getenv("XDG_CONFIG_DIRS");
988 if(!(len
= a_strlen(xdg_config_dirs
)))
990 xdg_config_dirs
= XDG_CONFIG_DIR
;
991 len
= sizeof(XDG_CONFIG_DIR
) - 1;
994 xdg_files
= a_strsplit(xdg_config_dirs
, len
, ':');
996 for(buf
= xdg_files
; *buf
&& !ret
; buf
++)
998 a_asprintf(&confpath
, "%s" AWESOME_CONFIG_FILE
, *buf
);
999 if(luaA_loadrc(confpath
, run
))
1004 p_delete(&confpath
);
1009 p_delete(&confpath
);
1013 for(buf
= xdg_files
; *buf
; buf
++)
1015 p_delete(&xdg_files
);
1018 /* Assure there's at least one tag */
1019 for(screen
= 0; screen
< globalconf
.nscreen
; screen
++)
1020 if(!globalconf
.screens
[screen
].tags
.len
)
1021 tag_append_to_screen(tag_new("default", sizeof("default") - 1),
1022 &globalconf
.screens
[screen
]);
1026 /** Parse a command.
1027 * \param cmd The buffer to parse.
1028 * \return the number of elements pushed on the stack by the last statement in cmd.
1029 * If there's an error, the message is pushed onto the stack and this returns 1.
1032 luaA_docmd(const char *cmd
)
1035 int newtop
, oldtop
= lua_gettop(globalconf
.L
);
1037 while((p
= strchr(cmd
, '\n')))
1039 newtop
= lua_gettop(globalconf
.L
);
1040 lua_pop(globalconf
.L
, newtop
- oldtop
);
1044 if (luaL_dostring(globalconf
.L
, cmd
))
1046 warn("error executing Lua code: %s", lua_tostring(globalconf
.L
, -1));
1051 return lua_gettop(globalconf
.L
) - oldtop
;
1054 /** Pushes a Lua array containing the top n elements of the stack.
1055 * \param n The number of elements to put in the array.
1061 lua_createtable(globalconf
.L
, n
, 0);
1062 lua_insert(globalconf
.L
, -n
- 1);
1064 for (i
= n
; i
> 0; i
--)
1065 lua_rawseti(globalconf
.L
, -i
- 1, i
);
1068 /** Maps the top n elements of the stack to the result of
1069 * applying a function to that element.
1070 * \param n The number of elements to map.
1072 * \lparam The function to map the elements by. This should be
1073 * at position -(n + 1).
1079 for (i
= 0; i
< n
; i
++)
1081 lua_pushvalue(globalconf
.L
, -n
- 1); /* copy of the function */
1082 lua_pushvalue(globalconf
.L
, -n
- 1); /* value to map */
1083 lua_pcall(globalconf
.L
, 1, 1, 0); /* call function */
1084 lua_remove(globalconf
.L
, -n
- 1); /* remove old value */
1086 lua_remove(globalconf
.L
, -n
- 1); /* remove function */
1089 static void luaA_conn_cleanup(EV_P_ ev_io
*w
)
1091 ev_ref(EV_DEFAULT_UC
);
1092 ev_io_stop(EV_DEFAULT_UC_ w
);
1094 warn("error closing UNIX domain socket: %s", strerror(errno
));
1099 luaA_cb(EV_P_ ev_io
*w
, int revents
)
1106 switch(r
= recv(w
->fd
, buf
, sizeof(buf
)-1, MSG_TRUNC
))
1109 warn("error reading UNIX domain socket: %s", strerror(errno
));
1110 case 0: /* 0 bytes are only transferred when the connection is closed */
1111 luaA_conn_cleanup(EV_DEFAULT_UC_ w
);
1114 if(r
>= ssizeof(buf
))
1117 lua_getglobal(globalconf
.L
, "table");
1118 lua_getfield(globalconf
.L
, -1, "concat");
1119 lua_remove(globalconf
.L
, -2); /* remove table */
1121 lua_getglobal(globalconf
.L
, "tostring");
1122 els
= luaA_docmd(buf
);
1123 luaA_map(els
); /* map results to strings */
1124 luaA_array(els
); /* put strings in an array */
1126 lua_pushstring(globalconf
.L
, "\t");
1127 lua_pcall(globalconf
.L
, 2, 1, 0); /* concatenate results with tabs */
1129 s
= lua_tolstring(globalconf
.L
, -1, &len
);
1131 /* ignore ENOENT because the client may not read */
1132 if (send(w
->fd
, s
, len
, MSG_DONTWAIT
) == -1)
1139 warn("can't send back to client via domain socket: %s", strerror(errno
));
1143 lua_pop(globalconf
.L
, 1); /* pop the string */
1145 awesome_refresh(globalconf
.connection
);
1150 luaA_conn_cb(EV_P_ ev_io
*w
, int revents
)
1152 ev_io
*csio_conn
= p_new(ev_io
, 1);
1153 int csfd
= accept(w
->fd
, NULL
, NULL
);
1155 ev_io_init(csio_conn
, &luaA_cb
, csfd
, EV_READ
);
1156 ev_io_start(EV_DEFAULT_UC_ csio_conn
);
1157 ev_unref(EV_DEFAULT_UC
);
1163 int csfd
= socket_getclient();
1165 if (csfd
< 0 || fcntl(csfd
, F_SETFD
, FD_CLOEXEC
) == -1)
1168 addr
= socket_getaddr(getenv("DISPLAY"));
1170 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1172 if(errno
== EADDRINUSE
)
1174 if(unlink(addr
->sun_path
))
1175 warn("error unlinking existing file: %s", strerror(errno
));
1176 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
1177 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1180 return warn("error binding UNIX domain socket: %s", strerror(errno
));
1184 ev_io_init(&csio
, &luaA_conn_cb
, csfd
, EV_READ
);
1185 ev_io_start(EV_DEFAULT_UC_
&csio
);
1186 ev_unref(EV_DEFAULT_UC
);
1190 luaA_cs_cleanup(void)
1194 ev_ref(EV_DEFAULT_UC
);
1195 ev_io_stop(EV_DEFAULT_UC_
&csio
);
1197 warn("error closing UNIX domain socket: %s", strerror(errno
));
1198 if(unlink(addr
->sun_path
))
1199 warn("error unlinking UNIX domain socket: %s", strerror(errno
));
1205 luaA_on_timer(EV_P_ ev_timer
*w
, int revents
)
1207 if(globalconf
.hooks
.timer
!= LUA_REFNIL
)
1208 luaA_dofunction(globalconf
.L
, globalconf
.hooks
.timer
, 0, 0);
1209 awesome_refresh(globalconf
.connection
);
1212 /** Push a color as a string onto the stack
1213 * \param L The Lua VM state.
1214 * \param c The color to push.
1215 * \return The number of elements pushed on stack.
1218 luaA_pushcolor(lua_State
*L
, const xcolor_t
*c
)
1220 uint8_t r
= (unsigned)c
->red
* 0xff / 0xffff;
1221 uint8_t g
= (unsigned)c
->green
* 0xff / 0xffff;
1222 uint8_t b
= (unsigned)c
->blue
* 0xff / 0xffff;
1223 uint8_t a
= (unsigned)c
->alpha
* 0xff / 0xffff;
1226 /* do not print alpha if it's full */
1228 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x", r
, g
, b
);
1230 len
= snprintf(s
, sizeof(s
), "#%02x%02x%02x%02x", r
, g
, b
, a
);
1231 lua_pushlstring(L
, s
, len
);