3 * vim:ts=4:sw=4:expandtab
5 * i3 - an improved dynamic tiling window manager
6 * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
8 * cmdparse.y: the parser for commands you send to i3 (or bind on keys)
12 #include <sys/types.h>
20 typedef struct yy_buffer_state *YY_BUFFER_STATE;
21 extern int cmdyylex(struct context *context);
22 extern int cmdyyparse(void);
24 YY_BUFFER_STATE cmdyy_scan_string(const char *);
26 static struct context *context;
27 static Match current_match;
30 * Helper data structure for an operation window (window on which the operation
31 * will be performed). Used to build the TAILQ owindows.
34 typedef struct owindow {
36 TAILQ_ENTRY(owindow) owindows;
38 static TAILQ_HEAD(owindows_head, owindow) owindows;
40 /* Holds the JSON which will be returned via IPC or NULL for the default return
42 static char *json_output;
44 /* We don’t need yydebug for now, as we got decent error messages using
45 * yyerror(). Should you ever want to extend the parser, it might be handy
46 * to just comment it in again, so it stays here. */
49 void cmdyyerror(const char *error_message) {
51 ELOG("CMD: %s\n", error_message);
52 ELOG("CMD: in command:\n");
53 ELOG("CMD: %s\n", context->line_copy);
55 for (int c = 1; c <= context->last_column; c++)
56 if (c >= context->first_column)
61 context->compact_error = sstrdup(error_message);
68 char *parse_cmd(const char *new) {
69 cmdyy_scan_string(new);
71 match_init(¤t_match);
72 context = scalloc(sizeof(struct context));
73 context->filename = "cmd";
75 if (cmdyyparse() != 0) {
76 fprintf(stderr, "Could not parse command\n");
77 asprintf(&json_output, "{\"success\":false, \"error\":\"%s at position %d\"}",
78 context->compact_error, context->first_column);
79 FREE(context->line_copy);
80 FREE(context->compact_error);
84 printf("done, json output = %s\n", json_output);
86 FREE(context->line_copy);
87 FREE(context->compact_error);
96 %lex-param { struct context *context }
104 %token TOK_ATTACH "attach"
105 %token TOK_EXEC "exec"
106 %token TOK_EXIT "exit"
107 %token TOK_RELOAD "reload"
108 %token TOK_RESTART "restart"
109 %token TOK_KILL "kill"
110 %token TOK_FULLSCREEN "fullscreen"
111 %token TOK_GLOBAL "global"
112 %token TOK_LAYOUT "layout"
113 %token TOK_DEFAULT "default"
114 %token TOK_STACKED "stacked"
115 %token TOK_TABBED "tabbed"
116 %token TOK_BORDER "border"
117 %token TOK_NORMAL "normal"
118 %token TOK_NONE "none"
119 %token TOK_1PIXEL "1pixel"
120 %token TOK_MODE "mode"
121 %token TOK_TILING "tiling"
122 %token TOK_FLOATING "floating"
123 %token TOK_WORKSPACE "workspace"
124 %token TOK_TOGGLE "toggle"
125 %token TOK_FOCUS "focus"
126 %token TOK_MOVE "move"
127 %token TOK_OPEN "open"
128 %token TOK_NEXT "next"
129 %token TOK_PREV "prev"
130 %token TOK_SPLIT "split"
131 %token TOK_HORIZONTAL "horizontal"
132 %token TOK_VERTICAL "vertical"
133 %token TOK_LEVEL "level"
135 %token TOK_DOWN "down"
136 %token TOK_LEFT "left"
137 %token TOK_RIGHT "right"
138 %token TOK_RESTORE "restore"
139 %token TOK_MARK "mark"
140 %token TOK_RESIZE "resize"
141 %token TOK_GROW "grow"
142 %token TOK_SHRINK "shrink"
148 %token TOK_CLASS "class"
150 %token TOK_CON_ID "con_id"
152 %token WHITESPACE "<whitespace>"
153 %token STR "<string>"
154 %token NUMBER "<number>"
159 commands optwhitespace ';' optwhitespace command
164 printf("single command completely parsed, dropping state...\n");
165 while (!TAILQ_EMPTY(&owindows)) {
166 current = TAILQ_FIRST(&owindows);
167 TAILQ_REMOVE(&owindows, current, owindows);
170 match_init(¤t_match);
179 match optwhitespace operations
183 | matchstart optwhitespace criteria optwhitespace matchend
185 printf("match parsed\n");
193 match_init(¤t_match);
194 TAILQ_INIT(&owindows);
197 TAILQ_FOREACH(con, &all_cons, all_cons) {
198 owindow *ow = smalloc(sizeof(owindow));
200 TAILQ_INSERT_TAIL(&owindows, ow, owindows);
208 owindow *next, *current;
210 printf("match specification finished, matching...\n");
211 /* copy the old list head to iterate through it and start with a fresh
212 * list which will contain only matching windows */
213 struct owindows_head old = owindows;
214 TAILQ_INIT(&owindows);
215 for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
216 /* make a copy of the next pointer and advance the pointer to the
217 * next element as we are going to invalidate the element’s
218 * next/prev pointers by calling TAILQ_INSERT_TAIL later */
220 next = TAILQ_NEXT(next, owindows);
222 printf("checking if con %p / %s matches\n", current->con, current->con->name);
223 if (current_match.con_id != NULL) {
224 if (current_match.con_id == current->con) {
225 printf("matches container!\n");
226 TAILQ_INSERT_TAIL(&owindows, current, owindows);
229 } else if (current_match.mark != NULL && current->con->mark != NULL &&
230 strcasecmp(current_match.mark, current->con->mark) == 0) {
231 printf("match by mark\n");
232 TAILQ_INSERT_TAIL(&owindows, current, owindows);
235 if (current->con->window == NULL)
237 if (match_matches_window(¤t_match, current->con->window)) {
238 printf("matches window!\n");
239 TAILQ_INSERT_TAIL(&owindows, current, owindows);
241 printf("doesnt match\n");
247 TAILQ_FOREACH(current, &owindows, owindows) {
248 printf("matching: %p / %s\n", current->con, current->con->name);
257 printf("criteria: class = %s\n", $<string>3);
258 current_match.class = $<string>3;
262 printf("criteria: id = %s\n", $<string>3);
264 long parsed = strtol($<string>3, &end, 10);
265 if (parsed == LONG_MIN ||
266 parsed == LONG_MAX ||
268 (end && *end != '\0')) {
269 ELOG("Could not parse con id \"%s\"\n", $<string>3);
271 current_match.con_id = (Con*)parsed;
272 printf("id as int = %p\n", current_match.con_id);
277 printf("criteria: window id = %s\n", $<string>3);
279 long parsed = strtol($<string>3, &end, 10);
280 if (parsed == LONG_MIN ||
281 parsed == LONG_MAX ||
283 (end && *end != '\0')) {
284 ELOG("Could not parse window id \"%s\"\n", $<string>3);
286 current_match.id = parsed;
287 printf("window id as int = %d\n", current_match.id);
292 printf("criteria: mark = %s\n", $<string>3);
293 current_match.mark = $<string>3;
298 operation optwhitespace
299 | operations ',' optwhitespace operation
328 TOK_EXEC WHITESPACE STR
330 printf("should execute %s\n", $<string>3);
331 start_application($<string>3);
339 printf("exit, bye bye\n");
347 printf("reloading\n");
348 load_configuration(conn, NULL, true);
350 /* Send an IPC event just in case the ws names have changed */
351 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
358 printf("restarting i3\n");
366 printf("should attach\n");
375 printf("should focus\n");
376 if (match_is_empty(¤t_match)) {
377 /* TODO: better error message */
378 LOG("Error: The focus command requires you to use some criteria.\n");
382 /* TODO: warning if the match contains more than one entry. does not
383 * make so much sense when focusing */
384 TAILQ_FOREACH(current, &owindows, owindows) {
385 LOG("focusing %p / %s\n", current->con, current->con->name);
386 con_focus(current->con);
396 printf("killing!\n");
397 /* check if the match is empty, not if the result is empty */
398 if (match_is_empty(¤t_match))
401 TAILQ_FOREACH(current, &owindows, owindows) {
402 printf("matching: %p / %s\n", current->con, current->con->name);
403 tree_close(current->con, true, false);
411 TOK_WORKSPACE WHITESPACE STR
413 printf("should switch to workspace %s\n", $<string>3);
414 workspace_show($<string>3);
422 printf("opening new container\n");
423 Con *con = tree_open_con(NULL);
425 asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
432 printf("toggling fullscreen\n");
435 /* check if the match is empty, not if the result is empty */
436 if (match_is_empty(¤t_match))
437 con_toggle_fullscreen(focused);
439 TAILQ_FOREACH(current, &owindows, owindows) {
440 printf("matching: %p / %s\n", current->con, current->con->name);
441 con_toggle_fullscreen(current->con);
449 TOK_NEXT WHITESPACE direction
451 /* TODO: use matches */
452 printf("should select next window in direction %c\n", $<chr>3);
453 tree_next('n', ($<chr>3 == 'v' ? VERT : HORIZ));
458 TOK_PREV WHITESPACE direction
460 /* TODO: use matches */
461 printf("should select prev window in direction %c\n", $<chr>3);
462 tree_next('p', ($<chr>3 == 'v' ? VERT : HORIZ));
467 TOK_SPLIT WHITESPACE direction
469 /* TODO: use matches */
470 printf("splitting in direction %c\n", $<chr>3);
471 tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
476 TOK_HORIZONTAL { $<chr>$ = 'h'; }
477 | 'h' { $<chr>$ = 'h'; }
478 | TOK_VERTICAL { $<chr>$ = 'v'; }
479 | 'v' { $<chr>$ = 'v'; }
483 TOK_MODE WHITESPACE window_mode
485 if ($<number>3 == TOK_TOGGLE) {
486 printf("should toggle mode\n");
487 toggle_floating_mode(focused, false);
489 printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
490 if ($<number>3 == TOK_FLOATING) {
491 floating_enable(focused, false);
493 floating_disable(focused, false);
500 TOK_FLOATING { $<number>$ = TOK_FLOATING; }
501 | TOK_TILING { $<number>$ = TOK_TILING; }
502 | TOK_TOGGLE { $<number>$ = TOK_TOGGLE; }
506 TOK_BORDER WHITESPACE border_style
508 printf("border style should be changed to %d\n", $<number>3);
511 /* check if the match is empty, not if the result is empty */
512 if (match_is_empty(¤t_match))
513 focused->border_style = $<number>3;
515 TAILQ_FOREACH(current, &owindows, owindows) {
516 printf("matching: %p / %s\n", current->con, current->con->name);
517 current->con->border_style = $<number>3;
524 TOK_NORMAL { $<number>$ = BS_NORMAL; }
525 | TOK_NONE { $<number>$ = BS_NONE; }
526 | TOK_1PIXEL { $<number>$ = BS_1PIXEL; }
531 TOK_LEVEL WHITESPACE level_direction
533 printf("level %c\n", $<chr>3);
541 TOK_UP { $<chr>$ = 'u'; }
542 | TOK_DOWN { $<chr>$ = 'd'; }
546 TOK_MOVE WHITESPACE direction
548 printf("moving in direction %d\n", $<number>3);
549 tree_move($<number>3);
551 | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
555 printf("should move window to workspace %s\n", $<string>5);
556 /* get the workspace */
557 Con *ws = workspace_get($<string>5, NULL);
560 /* check if the match is empty, not if the result is empty */
561 if (match_is_empty(¤t_match))
562 con_move_to_workspace(focused, ws);
564 TAILQ_FOREACH(current, &owindows, owindows) {
565 printf("matching: %p / %s\n", current->con, current->con->name);
566 con_move_to_workspace(current->con, ws);
573 TOK_RESTORE WHITESPACE STR
575 printf("restoring \"%s\"\n", $<string>3);
576 tree_append_json($<string>3);
582 TOK_LAYOUT WHITESPACE layout_mode
584 printf("changing layout to %d\n", $<number>3);
587 /* check if the match is empty, not if the result is empty */
588 if (match_is_empty(¤t_match))
589 con_set_layout(focused->parent, $<number>3);
591 TAILQ_FOREACH(current, &owindows, owindows) {
592 printf("matching: %p / %s\n", current->con, current->con->name);
593 con_set_layout(current->con, $<number>3);
601 TOK_DEFAULT { $<number>$ = L_DEFAULT; }
602 | TOK_STACKED { $<number>$ = L_STACKED; }
603 | TOK_TABBED { $<number>$ = L_TABBED; }
607 TOK_MARK WHITESPACE STR
609 printf("marking window with str %s\n", $<string>3);
612 /* check if the match is empty, not if the result is empty */
613 if (match_is_empty(¤t_match))
614 focused->mark = sstrdup($<string>3);
616 TAILQ_FOREACH(current, &owindows, owindows) {
617 printf("matching: %p / %s\n", current->con, current->con->name);
618 current->con->mark = sstrdup($<string>3);
627 TOK_NOP WHITESPACE STR
629 printf("-------------------------------------------------\n");
630 printf(" NOP: %s\n", $<string>3);
631 printf("-------------------------------------------------\n");
637 TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
639 /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
640 printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
641 int direction = $<number>5;
643 int ppt = $<number>7;
644 if ($<number>3 == TOK_SHRINK) {
649 if (con_is_floating(focused)) {
650 printf("floating resize\n");
651 if (direction == TOK_UP) {
652 focused->parent->rect.y -= px;
653 focused->parent->rect.height += px;
654 } else if (direction == TOK_DOWN) {
655 focused->rect.height += px;
656 } else if (direction == TOK_LEFT) {
657 focused->rect.x -= px;
658 focused->rect.width += px;
660 focused->rect.width += px;
663 LOG("tiling resize\n");
664 /* get the default percentage */
665 int children = con_num_children(focused->parent);
667 LOG("ins. %d children\n", children);
668 double percentage = 1.0 / children;
669 LOG("default percentage = %f\n", percentage);
671 if (direction == TOK_UP || direction == TOK_LEFT) {
672 other = TAILQ_PREV(focused, nodes_head, nodes);
674 other = TAILQ_NEXT(focused, nodes);
676 if (other == TAILQ_END(workspaces)) {
677 LOG("No other container in this direction found, cannot resize.\n");
680 LOG("other->percent = %f\n", other->percent);
681 LOG("focused->percent before = %f\n", focused->percent);
682 if (focused->percent == 0.0)
683 focused->percent = percentage;
684 if (other->percent == 0.0)
685 other->percent = percentage;
686 focused->percent += ((double)ppt / 100.0);
687 other->percent -= ((double)ppt / 100.0);
688 LOG("focused->percent after = %f\n", focused->percent);
689 LOG("other->percent after = %f\n", other->percent);
699 | WHITESPACE NUMBER WHITESPACE TOK_PX
701 $<number>$ = $<number>2;
710 | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
712 $<number>$ = $<number>4;
717 TOK_GROW { $<number>$ = TOK_GROW; }
718 | TOK_SHRINK { $<number>$ = TOK_SHRINK; }
722 TOK_UP { $<number>$ = TOK_UP; }
723 | TOK_DOWN { $<number>$ = TOK_DOWN; }
724 | TOK_LEFT { $<number>$ = TOK_LEFT; }
725 | TOK_RIGHT { $<number>$ = TOK_RIGHT; }