1 /* Lua scripting support
3 * Copyright (c) 2008 Sadrul Habib Chowdhury (sadrul@users.sf.net)
5 * Sadrul Habib Chowdhury (sadrul@users.sf.net)
6 * Rui Guo (firemeteor.guo@gmail.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program (see the file COPYING); if not, write to the
20 * Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
23 ****************************************************************
25 #include <sys/types.h>
42 static int StackDump(lua_State
*L
, const char *message
)
44 FILE *f
= fopen("/tmp/debug/stack", "ab");
45 int i
= lua_gettop(L
);
47 fprintf(f
, "%s", message
);
50 int t
= lua_type(L
, i
);
54 fprintf(f
, "String: %s\n", lua_tostring(L
, i
));
58 fprintf(f
, "Boolean: %s\n", lua_toboolean(L
, i
) ? "true" : "false");
62 fprintf(f
, "Number: %g\n", lua_tonumber(L
, i
));
66 fprintf(f
, "Type: %s\n", lua_typename(L
, t
));
76 extern struct win
*windows
, *fore
;
77 extern struct display
*displays
, *display
;
78 extern struct LayFuncs WinLf
;
79 extern struct layer
*flayer
;
80 extern void AppendWinMsgRend(const char *str
, const char *color
);
82 static int LuaDispatch(void *handler
, const char *params
, va_list va
);
83 static int LuaRegEvent(lua_State
*L
);
84 static void LuaShowErr(lua_State
*L
);
85 struct binding lua_binding
;
89 LUA_HANDLER_TYPE_N
= 1,
101 struct listener
*listener
;
104 typedef struct lua_handler
*lua_handler
;
105 void LuaPushHandler(lua_State
*L
, lua_handler lh
);
106 void LuaHRef(lua_State
*L
, int key
, int reg
);
107 lua_handler
LuaCheckHandler(lua_State
*L
, int idx
, int ref
);
110 LuaAllocHandler(const char *name
, int ref
)
112 struct lua_handler
*lh
;
113 lh
= (struct lua_handler
*) malloc(sizeof(struct lua_handler
));
119 lh
->type
= LUA_HANDLER_TYPE_N
;
124 lh
->type
= LUA_HANDLER_TYPE_F
;
125 lh
->u
.reference
= ref
;
132 LuaFreeHandler(lua_State
*L
, struct lua_handler
**lh
)
134 if ((*lh
)->type
== LUA_HANDLER_TYPE_N
)
138 LuaHRef(L
, (*lh
)->u
.reference
, 0);
139 (*lh
)->u
.reference
= 0;
145 #define CHECK_TYPE(name, type) \
147 check_##name(lua_State *L, int index) \
150 luaL_checktype(L, index, LUA_TUSERDATA); \
151 var = (type **) luaL_checkudata(L, index, #name); \
153 luaL_typerror(L, index, #name); \
157 #define PUSH_TYPE(name, type) \
159 push_##name(lua_State *L, type **t) \
166 r = (type **)lua_newuserdata(L, sizeof(type *)); \
168 luaL_getmetatable(L, #name); \
169 lua_setmetatable(L,-2); \
173 /* Much of the following template comes from:
174 * http://lua-users.org/wiki/BindingWithMembersAndMethods
177 static int get_int (lua_State
*L
, void *v
)
179 lua_pushinteger (L
, *(int*)v
);
183 static int set_int (lua_State
*L
, void *v
)
185 *(int*)v
= luaL_checkint(L
, 3);
189 static int get_number (lua_State
*L
, void *v
)
191 lua_pushnumber(L
, *(lua_Number
*)v
);
195 static int set_number (lua_State
*L
, void *v
)
197 *(lua_Number
*)v
= luaL_checknumber(L
, 3);
201 static int get_string (lua_State
*L
, void *v
)
203 lua_pushstring(L
, (char*)v
);
207 static int set_string (lua_State
*L
, void *v
)
209 *(const char**)v
= luaL_checkstring(L
, 3);
213 typedef int (*Xet_func
) (lua_State
*L
, void *v
);
215 /* member info for get and set handlers */
218 const char *name
; /* member name */
219 Xet_func func
; /* get or set function for type of member */
220 size_t offset
; /* offset of member within the struct */
221 int (*absolute
)(lua_State
*);
224 static void Xet_add (lua_State
*L
, const struct Xet_reg
*l
)
230 lua_pushstring(L
, l
->name
);
231 lua_pushlightuserdata(L
, (void*)l
);
236 static int Xet_call (lua_State
*L
)
238 /* for get: stack has userdata, index, lightuserdata */
239 /* for set: stack has userdata, index, value, lightuserdata */
240 const struct Xet_reg
*m
= (const struct Xet_reg
*)lua_touserdata(L
, -1); /* member info */
241 lua_pop(L
, 1); /* drop lightuserdata */
242 luaL_checktype(L
, 1, LUA_TUSERDATA
);
244 return m
->absolute(L
);
245 return m
->func(L
, *(char**)lua_touserdata(L
, 1) + m
->offset
);
248 static int index_handler (lua_State
*L
)
250 /* stack has userdata, index */
251 lua_pushvalue(L
, 2); /* dup index */
252 lua_rawget(L
, lua_upvalueindex(1)); /* lookup member by name */
253 if (!lua_islightuserdata(L
, -1))
255 lua_pop(L
, 1); /* drop value */
256 lua_pushvalue(L
, 2); /* dup index */
257 lua_gettable(L
, lua_upvalueindex(2)); /* else try methods */
258 if (lua_isnil(L
, -1)) /* invalid member */
259 luaL_error(L
, "cannot get member '%s'", lua_tostring(L
, 2));
262 return Xet_call(L
); /* call get function */
265 static int newindex_handler (lua_State
*L
)
267 /* stack has userdata, index, value */
268 lua_pushvalue(L
, 2); /* dup index */
269 lua_rawget(L
, lua_upvalueindex(1)); /* lookup member by name */
270 if (!lua_islightuserdata(L
, -1)) /* invalid member */
271 luaL_error(L
, "cannot set member '%s'", lua_tostring(L
, 2));
272 return Xet_call(L
); /* call set function */
276 struct_register(lua_State
*L
, const char *name
, const luaL_reg fn_methods
[], const luaL_reg meta_methods
[],
277 const struct Xet_reg setters
[], const struct Xet_reg getters
[])
279 int metatable
, methods
;
281 /* create methods table & add it to the table of globals */
282 luaL_register(L
, name
, fn_methods
);
283 methods
= lua_gettop(L
);
285 /* create metatable & add it to the registry */
286 luaL_newmetatable(L
, name
);
287 luaL_register(L
, 0, meta_methods
); /* fill metatable */
289 /* To identify the type of object */
290 lua_pushstring(L
, "_objname");
291 lua_pushstring(L
, name
);
294 metatable
= lua_gettop(L
);
296 lua_pushliteral(L
, "__metatable");
297 lua_pushvalue(L
, methods
); /* dup methods table*/
298 lua_rawset(L
, metatable
); /* hide metatable:
299 metatable.__metatable = methods */
301 lua_pushliteral(L
, "__index");
302 lua_pushvalue(L
, metatable
); /* upvalue index 1 */
303 Xet_add(L
, getters
); /* fill metatable with getters */
304 lua_pushvalue(L
, methods
); /* upvalue index 2 */
305 lua_pushcclosure(L
, index_handler
, 2);
306 lua_rawset(L
, metatable
); /* metatable.__index = index_handler */
308 lua_pushliteral(L
, "__newindex");
309 lua_newtable(L
); /* table for members you can set */
310 Xet_add(L
, setters
); /* fill with setters */
311 lua_pushcclosure(L
, newindex_handler
, 1);
312 lua_rawset(L
, metatable
); /* metatable.__newindex = newindex_handler */
314 /* FIXME: Why do we leave an element on the stack? */
315 lua_pop(L
, 1); /* drop metatable */
316 return 1; /* return methods on the stack */
322 PUSH_TYPE(callback
, struct lua_handler
)
324 CHECK_TYPE(callback
, struct lua_handler
)
327 callback_unhook(lua_State
*L
)
329 struct lua_handler
*lh
= check_callback(L
, 1);
332 lua_pushboolean(L
, 0);
333 lua_pushstring(L
, "Callback already unhooked.");
338 if (lh
->type
== LUA_HANDLER_TYPE_N
)
344 LuaHRef(L
, lh
->u
.reference
, 0);
347 unregister_listener(lh
->listener
);
349 lua_pushboolean(L
, 1);
354 static const luaL_reg callback_methods
[] = {
355 {"unhook", callback_unhook
},
359 static const luaL_reg callback_metamethods
[] = {
363 static const struct Xet_reg callback_setters
[] = {
367 static const struct Xet_reg callback_getters
[] = {
376 PUSH_TYPE(window
, struct win
)
378 CHECK_TYPE(window
, struct win
)
380 static int get_window(lua_State
*L
, void *v
)
382 push_window(L
, (struct win
**)v
);
387 window_change_title(lua_State
*L
)
389 struct win
*w
= check_window(L
, 1);
391 const char *title
= luaL_checklstring(L
, 2, &len
);
392 ChangeAKA(w
, (char *)title
, len
);
397 window_get_monitor_status(lua_State
*L
)
399 struct win
*w
= check_window(L
, 1);
400 int activity
= luaL_checkint(L
, 2);
403 lua_pushinteger(L
, w
->w_monitor
!= MON_OFF
);
406 lua_pushinteger(L
, w
->w_silence
== SILENCE_ON
? w
->w_silencewait
: 0);
411 static const luaL_reg window_methods
[] = {
412 {"get_monitor_status", window_get_monitor_status
},
413 {"hook", LuaRegEvent
},
418 window_tostring(lua_State
*L
)
421 struct win
*w
= check_window(L
, 1);
422 snprintf(str
, sizeof(str
), "{window #%d: '%s'}", w
->w_number
, w
->w_title
);
423 lua_pushstring(L
, str
);
428 window_equality(lua_State
*L
)
430 struct win
*w1
= check_window(L
, 1), *w2
= check_window(L
, 2);
431 lua_pushboolean(L
, (w1
== w2
|| (w1
&& w2
&& w1
->w_number
== w2
->w_number
)));
435 static const luaL_reg window_metamethods
[] = {
436 {"__tostring", window_tostring
},
437 {"__eq", window_equality
},
441 static const struct Xet_reg window_setters
[] = {
442 {"title", 0, 0, window_change_title
/*absolute setter*/},
446 static const struct Xet_reg window_getters
[] = {
447 {"title", get_string
, offsetof(struct win
, w_title
) + 8},
448 {"number", get_int
, offsetof(struct win
, w_number
)},
449 {"dir", get_string
, offsetof(struct win
, w_dir
)},
450 {"tty", get_string
, offsetof(struct win
, w_tty
)},
451 {"pid", get_int
, offsetof(struct win
, w_pid
)},
452 {"group", get_window
, offsetof(struct win
, w_group
)},
453 {"bell", get_int
, offsetof(struct win
, w_bell
)},
462 PUSH_TYPE(user
, struct acluser
)
464 CHECK_TYPE(user
, struct acluser
)
467 get_user(lua_State
*L
, void *v
)
469 push_user(L
, (struct acluser
**)v
);
473 static const luaL_reg user_methods
[] = {
478 user_tostring(lua_State
*L
)
481 struct acluser
*u
= check_user(L
, 1);
482 snprintf(str
, sizeof(str
), "{user '%s'}", u
->u_name
);
483 lua_pushstring(L
, str
);
487 static const luaL_reg user_metamethods
[] = {
488 {"__tostring", user_tostring
},
492 static const struct Xet_reg user_setters
[] = {
496 static const struct Xet_reg user_getters
[] = {
497 {"name", get_string
, offsetof(struct acluser
, u_name
)},
498 {"password", get_string
, offsetof(struct acluser
, u_password
)},
506 PUSH_TYPE(canvas
, struct canvas
)
508 CHECK_TYPE(canvas
, struct canvas
)
511 get_canvas(lua_State
*L
, void *v
)
513 push_canvas(L
, (struct canvas
**)v
);
518 canvas_select(lua_State
*L
)
520 struct canvas
*c
= check_canvas(L
, 1);
521 if (!display
|| D_forecv
== c
)
523 SetCanvasWindow(c
, Layer2Window(c
->c_layer
));
526 /* XXX: the following all is duplicated from process.c:DoAction.
527 * Should these be in some better place?
529 ResizeCanvas(&D_canvas
);
530 RecreateCanvasChain();
531 RethinkDisplayViewports();
532 ResizeLayersToCanvases(); /* redisplays */
533 fore
= D_fore
= Layer2Window(D_forecv
->c_layer
);
534 flayer
= D_forecv
->c_layer
;
536 if (D_xtermosc
[2] || D_xtermosc
[3])
546 flayer
= D_forecv
->c_layer
;
547 CV_CALL(D_forecv
, LayRestore();LaySetCursor());
548 WindowChanged(0, 'F');
552 static const luaL_reg canvas_methods
[] = {
553 {"select", canvas_select
},
557 static const luaL_reg canvas_metamethods
[] = {
561 static const struct Xet_reg canvas_setters
[] = {
566 canvas_get_window(lua_State
*L
)
568 struct canvas
*c
= check_canvas(L
, 1);
569 struct win
*win
= Layer2Window(c
->c_layer
);
571 push_window(L
, &win
);
577 static const struct Xet_reg canvas_getters
[] = {
578 {"next", get_canvas
, offsetof(struct canvas
, c_next
)},
579 {"xoff", get_int
, offsetof(struct canvas
, c_xoff
)},
580 {"yoff", get_int
, offsetof(struct canvas
, c_yoff
)},
581 {"xs", get_int
, offsetof(struct canvas
, c_xs
)},
582 {"ys", get_int
, offsetof(struct canvas
, c_ys
)},
583 {"xe", get_int
, offsetof(struct canvas
, c_xe
)},
584 {"ye", get_int
, offsetof(struct canvas
, c_ye
)},
585 {"window", 0, 0, canvas_get_window
},
593 PUSH_TYPE(layout
, struct layout
)
594 CHECK_TYPE(layout
, struct layout
)
596 static const struct Xet_reg layout_getters
[] = {
601 get_layout(lua_State
*L
, void *v
)
603 push_layout(L
, (struct layout
**)v
);
611 PUSH_TYPE(display
, struct display
)
613 CHECK_TYPE(display
, struct display
)
616 display_get_canvases(lua_State
*L
)
622 d
= check_display(L
, 1);
624 for (iter
= d
->d_cvlist
, count
= 0; iter
; iter
= iter
->c_next
, count
++) {
625 lua_pushinteger(L
, count
);
626 push_canvas(L
, &iter
);
633 static const luaL_reg display_methods
[] = {
634 {"get_canvases", display_get_canvases
},
639 display_tostring(lua_State
*L
)
642 struct display
*d
= check_display(L
, 1);
643 snprintf(str
, sizeof(str
), "{display: tty = '%s', term = '%s'}", d
->d_usertty
, d
->d_termname
);
644 lua_pushstring(L
, str
);
648 static const luaL_reg display_metamethods
[] = {
649 {"__tostring", display_tostring
},
653 static const struct Xet_reg display_setters
[] = {
657 static const struct Xet_reg display_getters
[] = {
658 {"tty", get_string
, offsetof(struct display
, d_usertty
)},
659 {"term", get_string
, offsetof(struct display
, d_termname
)},
660 {"fore", get_window
, offsetof(struct display
, d_fore
)},
661 {"other", get_window
, offsetof(struct display
, d_other
)},
662 {"width", get_int
, offsetof(struct display
, d_width
)},
663 {"height", get_int
, offsetof(struct display
, d_height
)},
664 {"user", get_user
, offsetof(struct display
, d_user
)},
665 {"layout", get_layout
, offsetof(struct display
, d_layout
)},
674 screen_get_windows(lua_State
*L
)
680 for (iter
= windows
, count
= 0; iter
; iter
= iter
->w_next
, count
++) {
681 lua_pushinteger(L
, iter
->w_number
);
682 push_window(L
, &iter
);
690 screen_get_displays(lua_State
*L
)
692 struct display
*iter
;
696 for (iter
= displays
, count
= 0; iter
; iter
= iter
->d_next
, count
++) {
697 lua_pushinteger(L
, count
);
698 push_display(L
, &iter
);
706 screen_get_display(lua_State
*L
)
708 push_display(L
, &display
);
713 screen_exec_command(lua_State
*L
)
718 command
= luaL_checklstring(L
, 1, &len
);
720 RcLine((char *)command
, len
);
726 screen_append_msg(lua_State
*L
)
728 const char *msg
, *color
;
730 msg
= luaL_checklstring(L
, 1, &len
);
734 color
= luaL_checklstring(L
, 2, &len
);
735 AppendWinMsgRend(msg
, color
);
746 script_input_fn(char *buf
, int len
, char *priv
)
748 struct sinput_data
*sidata
= (struct sinput_data
*)priv
;
749 lua_handler lh
= sidata
->lh
;
750 lua_State
*L
= sidata
->L
;
752 LuaPushHandler(L
, lh
);
753 lua_pushstring(L
, buf
);
754 if (lua_pcall(L
, 1, 0, 0) == LUA_ERRRUN
)
756 if(lua_isstring(L
, -1))
762 LuaFreeHandler(L
, &lh
);
766 screen_input(lua_State
*L
)
768 char * prompt
= NULL
;
770 struct sinput_data
*sidata
;
772 prompt
= (char *)luaL_checkstring(L
, 1);
773 lh
= LuaCheckHandler(L
, 2, 1);
774 sidata
= (struct sinput_data
*)malloc(sizeof(struct sinput_data
));
776 luaL_error(L
, "Out of Memory");
780 Input(prompt
, 100, INP_COOKED
, script_input_fn
, (char *)sidata
, 0);
785 static const luaL_reg screen_methods
[] = {
786 {"windows", screen_get_windows
},
787 {"displays", screen_get_displays
},
788 {"display", screen_get_display
},
789 {"command", screen_exec_command
},
790 {"append_msg", screen_append_msg
},
791 {"hook", LuaRegEvent
},
792 {"input", screen_input
},
796 static const luaL_reg screen_metamethods
[] = {
800 static const struct Xet_reg screen_setters
[] = {
804 static const struct Xet_reg screen_getters
[] = {
810 /** Public functions {{{ */
812 /* FIXME: Think about this: will it affect the registered handlers?*/
820 #define REGISTER(X) struct_register(L, #X , X ## _methods, X##_metamethods, X##_setters, X##_getters)
829 /* To store handler funcs */
830 luaL_getmetatable(L
, "screen");
831 /* two kinds of info in this table:
832 * _funckey[func]->key
833 * _funckey[key]->refcnt */
834 lua_pushstring(L
, "_funckey");
837 /* two kinds of info in this table:
838 * _keyfunc[key]->func */
839 lua_pushstring(L
, "_keyfunc");
847 /* An error message on top of the stack. */
849 LuaShowErr(lua_State
*L
)
851 struct display
*d
= display
;
853 const char *message
= luaL_checklstring(L
, -1, &len
);
854 LMsg(0, "%s", message
? message
: "Unknown error");
861 void (*push_fn
)(lua_State
*, void*);
866 LuaCallProcess(const char *name
, struct fn_def defs
[])
870 lua_getfield(L
, LUA_GLOBALSINDEX
, name
);
871 if (lua_isnil(L
, -1))
876 for (argc
= 0; defs
[argc
].push_fn
; argc
++)
877 defs
[argc
].push_fn(L
, defs
[argc
].value
);
878 if (lua_pcall(L
, argc
, 0, 0) == LUA_ERRRUN
&& lua_isstring(L
, -1))
886 int LuaSource(const char *file
, int async
)
891 if (stat(file
, &st
) == -1)
892 Msg(errno
, "Error loading lua script file '%s'", file
);
895 int len
= strlen(file
);
896 if (len
< 4 || strncmp(file
+ len
- 4, ".lua", 4) != 0)
898 if (luaL_dofile(L
, file
) && lua_isstring(L
, -1))
917 LuaProcessCaption(const char *caption
, struct win
*win
, int len
)
921 struct fn_def params
[] = {
922 {lua_pushstring
, caption
},
924 {lua_pushinteger
, len
},
927 return LuaCallProcess("process_caption", params
);
931 push_stringarray(lua_State
*L
, char **args
)
935 for (i
= 1; args
&& *args
; i
++) {
936 lua_pushinteger(L
, i
);
937 lua_pushstring(L
, *args
++);
943 LuaPushParams(lua_State
*L
, const char *params
, va_list va
)
951 lua_pushstring(L
, va_arg(va
, char *));
954 push_stringarray(L
, va_arg(va
, char **));
957 lua_pushinteger(L
, va_arg(va
, int));
961 struct display
*d
= va_arg(va
, struct display
*);
972 int LuaCall(const char *func
, const char **argv
)
978 StackDump(L
, "Before LuaCall\n");
979 lua_getfield(L
, LUA_GLOBALSINDEX
, func
);
980 if (lua_isnil(L
, -1))
983 lua_pushstring(L
, "Could not find the script function\n");
987 for (argc
= 0; *argv
; argv
++, argc
++)
989 lua_pushstring(L
, *argv
);
991 if (lua_pcall(L
, argc
, 0, 0) == LUA_ERRRUN
)
993 if(lua_isstring(L
, -1))
995 StackDump(L
, "After LuaCall\n");
1003 /*** Lua callback handler management {{{ */
1006 LuaPushHTable(lua_State
*L
, int screen
, const char * t
)
1008 lua_pushstring(L
, t
);
1009 lua_rawget(L
, screen
);
1010 /* FIXME: Do we need to balance the stack here? */
1011 if (lua_isnil(L
, -1))
1012 luaL_error(L
, "Fatal! Fail to get function registeration table!");
1013 return lua_gettop(L
);
1017 LuaPushHandler(lua_State
*L
, lua_handler lh
)
1020 if (lh
->type
== LUA_HANDLER_TYPE_F
)
1022 luaL_getmetatable(L
, "screen");
1023 keyfunc
= LuaPushHTable(L
, lua_gettop(L
), "_keyfunc");
1024 lua_rawgeti(L
, keyfunc
, lh
->u
.reference
);
1030 lua_getfield(L
, LUA_GLOBALSINDEX
, lh
->u
.name
);
1035 LuaHRef(lua_State
*L
, int key
, int reg
)
1037 int funckey
, keyfunc
, cnt
, sc
, idx
;
1038 luaL_getmetatable(L
, "screen");
1040 funckey
= LuaPushHTable(L
, sc
, "_funckey");
1041 keyfunc
= LuaPushHTable(L
, sc
, "_keyfunc");
1043 lua_rawgeti(L
, keyfunc
, key
);
1044 idx
= lua_gettop(L
);
1046 lua_rawgeti(L
, funckey
, key
);
1047 cnt
= lua_tointeger(L
, -1);/*cnt = htable[key]*/
1048 if (!reg
&& cnt
<= 1)
1050 /*release the last reference*/
1051 luaL_unref(L
, funckey
, key
);
1052 lua_pushvalue(L
, idx
);
1054 lua_settable(L
, funckey
); /*htable[func]=key*/
1058 lua_pushinteger(L
, key
);
1059 lua_pushinteger(L
, reg
? cnt
+ 1 : cnt
- 1);
1060 lua_settable(L
, funckey
); /*htable[key] = cnt + 1*/
1065 /* Ref when asked to. Never unref*/
1067 LuaFuncKey(lua_State
*L
, int idx
, int ref
)
1069 int key
, funckey
, sc
;
1070 luaL_getmetatable(L
, "screen");
1072 funckey
= LuaPushHTable(L
, sc
, "_funckey");
1074 lua_pushvalue(L
, idx
);
1075 lua_gettable(L
, funckey
);/*funckey[func] ==?*/
1076 if (lua_isnil(L
, -1))
1078 /* Not found, alloc a new key */
1082 /*funckey[key] = 1*/
1083 lua_pushinteger(L
, 1);
1084 key
= luaL_ref(L
, funckey
);
1086 /*funckey[func]=key*/
1087 lua_pushvalue(L
, idx
);
1088 lua_pushinteger(L
, key
);
1089 lua_settable(L
, funckey
);
1091 int keyfunc
= LuaPushHTable(L
, sc
, "_keyfunc");
1092 /*keyfunc[key] = func*/
1093 lua_pushinteger(L
, key
);
1094 lua_pushvalue(L
, idx
);
1095 lua_settable(L
, keyfunc
);
1101 key
= lua_tointeger(L
, -1);/*key = funckey[func]*/
1111 LuaCheckHandler(lua_State
*L
, int idx
, int ref
)
1114 if (lua_isstring(L
, idx
))
1116 const char * handler
;
1117 /* registered with func name.*/
1118 handler
= luaL_checkstring(L
, idx
);
1119 lua_getfield(L
, LUA_GLOBALSINDEX
, handler
);
1120 if (!lua_isfunction(L
, -1))
1121 luaL_error(L
, "The specified handler %s in param #%d is not a function", handler
, idx
);
1123 return LuaAllocHandler(handler
, 0);
1125 else if (!lua_isfunction(L
, idx
))
1126 luaL_error(L
, "Handler should be a function or the name of function");
1128 key
= LuaFuncKey(L
, idx
, ref
);
1129 return LuaAllocHandler(NULL
, key
);
1133 LuaHdlrComp(void *h1
, void *h2
)
1135 return (lua_handler
)h1
- (lua_handler
)h2
;
1141 LuaDispatch(void *handler
, const char *params
, va_list va
)
1143 lua_handler lh
= (lua_handler
)handler
;
1146 StackDump(L
, "before dispatch");
1148 LuaPushHandler(L
, lh
);
1149 if (lua_isnil(L
, -1))
1154 argc
= LuaPushParams(L
, params
, va
);
1156 if (lua_pcall(L
, argc
, 1, 0) == LUA_ERRRUN
&& lua_isstring(L
, -1))
1158 StackDump(L
, "After LuaDispatch\n");
1162 retvalue
= lua_tonumber(L
, -1);
1167 int LuaForeWindowChanged(void)
1169 struct fn_def params
[] = {
1170 {push_display
, &display
},
1171 {push_window
, display
? &D_fore
: &fore
},
1176 return LuaCallProcess("fore_changed", params
);
1179 #define SEVNAME_MAX 30
1181 LuaRegEvent(lua_State
*L
)
1183 /* signature: hook(obj, event, handler, priv);
1184 * or: hook(event, handler, priv)
1185 * returns: A ticket for later unregister. */
1186 int idx
= 1, argc
= lua_gettop(L
);
1187 unsigned int priv
= 31; /* Default privilege */
1191 const char *objname
= "global";
1193 static char evbuf
[SEVNAME_MAX
];
1196 struct script_event
*sev
;
1198 StackDump(L
, "Before RegEvent\n");
1200 /* Identify the object, if specified */
1201 if (luaL_getmetafield(L
, 1, "_objname"))
1203 objname
= luaL_checkstring(L
, -1);
1205 if (!strcmp("screen", objname
))
1208 obj
= *(char **)lua_touserdata(L
, 1);
1212 event
= luaL_checkstring(L
, idx
++);
1213 snprintf(evbuf
, SEVNAME_MAX
, "%s_%s", objname
, event
);
1215 /* Check and get the handler */
1216 lh
= LuaCheckHandler(L
, idx
++, 1);
1218 luaL_error(L
, "Out of memory");
1220 StackDump(L
, "In RegEvent\n");
1223 priv
= luaL_checkinteger(L
, idx
);
1225 sev
= object_get_event(obj
, evbuf
);
1229 l
= (struct listener
*)malloc(sizeof(struct listener
));
1231 return luaL_error(L
, "Out of memory");
1233 l
->bd
= &lua_binding
;
1234 l
->handler
= (void *)lh
;
1235 if (register_listener(sev
, l
))
1238 if (lh
->type
== LUA_HANDLER_TYPE_N
)
1239 return luaL_error(L
, "Handler %s has already been registered", lh
->u
.name
);
1241 return luaL_error(L
, "Handler has already been registered");
1243 /* Return the handler for un-register */
1244 /*l->handler = lua_newuserdata(L, sizeof(struct lua_handler));
1245 memcpy(l->handler, &lh, sizeof(struct lua_handler));*/
1247 push_callback(L
, (lua_handler
*)&l
->handler
);
1250 return luaL_error(L
, "Invalid event specified: %s for object %s", event
, objname
);
1252 StackDump(L
, "After RegEvent\n");
1258 struct ScriptFuncs LuaFuncs
=
1260 LuaForeWindowChanged
,
1264 struct binding lua_binding
=