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>
19 typedef struct yy_buffer_state *YY_BUFFER_STATE;
20 extern int cmdyylex(struct context *context);
21 extern int cmdyyparse(void);
23 YY_BUFFER_STATE cmdyy_scan_string(const char *);
25 static struct bindings_head *current_bindings;
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);
95 %lex-param { struct context *context }
103 %token TOK_ATTACH "attach"
104 %token TOK_EXEC "exec"
105 %token TOK_EXIT "exit"
106 %token TOK_RELOAD "reload"
107 %token TOK_RESTART "restart"
108 %token TOK_KILL "kill"
109 %token TOK_FULLSCREEN "fullscreen"
110 %token TOK_GLOBAL "global"
111 %token TOK_LAYOUT "layout"
112 %token TOK_DEFAULT "default"
113 %token TOK_STACKED "stacked"
114 %token TOK_TABBED "tabbed"
115 %token TOK_BORDER "border"
116 %token TOK_NORMAL "normal"
117 %token TOK_NONE "none"
118 %token TOK_1PIXEL "1pixel"
119 %token TOK_MODE "mode"
120 %token TOK_TILING "tiling"
121 %token TOK_FLOATING "floating"
122 %token TOK_WORKSPACE "workspace"
123 %token TOK_TOGGLE "toggle"
124 %token TOK_FOCUS "focus"
125 %token TOK_MOVE "move"
126 %token TOK_OPEN "open"
127 %token TOK_NEXT "next"
128 %token TOK_PREV "prev"
129 %token TOK_SPLIT "split"
130 %token TOK_HORIZONTAL "horizontal"
131 %token TOK_VERTICAL "vertical"
132 %token TOK_LEVEL "level"
134 %token TOK_DOWN "down"
135 %token TOK_LEFT "left"
136 %token TOK_RIGHT "right"
137 %token TOK_RESTORE "restore"
138 %token TOK_MARK "mark"
139 %token TOK_RESIZE "resize"
140 %token TOK_GROW "grow"
141 %token TOK_SHRINK "shrink"
147 %token TOK_CLASS "class"
149 %token TOK_CON_ID "con_id"
151 %token WHITESPACE "<whitespace>"
152 %token STR "<string>"
153 %token NUMBER "<number>"
157 commands: /* empty */
158 | commands optwhitespace ';' optwhitespace command
163 printf("single command completely parsed, dropping state...\n");
164 while (!TAILQ_EMPTY(&owindows)) {
165 current = TAILQ_FIRST(&owindows);
166 TAILQ_REMOVE(&owindows, current, owindows);
169 match_init(¤t_match);
178 match optwhitespace operations
182 | matchstart optwhitespace criteria optwhitespace matchend
184 printf("match parsed\n");
192 match_init(¤t_match);
193 TAILQ_INIT(&owindows);
196 TAILQ_FOREACH(con, &all_cons, all_cons) {
197 owindow *ow = smalloc(sizeof(owindow));
199 TAILQ_INSERT_TAIL(&owindows, ow, owindows);
207 owindow *next, *current;
209 printf("match specification finished, matching...\n");
210 /* copy the old list head to iterate through it and start with a fresh
211 * list which will contain only matching windows */
212 struct owindows_head old = owindows;
213 TAILQ_INIT(&owindows);
214 for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
215 /* make a copy of the next pointer and advance the pointer to the
216 * next element as we are going to invalidate the element’s
217 * next/prev pointers by calling TAILQ_INSERT_TAIL later */
219 next = TAILQ_NEXT(next, owindows);
221 printf("checking if con %p / %s matches\n", current->con, current->con->name);
222 if (current_match.con_id != NULL) {
223 if (current_match.con_id == current->con) {
224 printf("matches container!\n");
225 TAILQ_INSERT_TAIL(&owindows, current, owindows);
228 } else if (current_match.mark != NULL && current->con->mark != NULL &&
229 strcasecmp(current_match.mark, current->con->mark) == 0) {
230 printf("match by mark\n");
231 TAILQ_INSERT_TAIL(&owindows, current, owindows);
234 if (current->con->window == NULL)
236 if (match_matches_window(¤t_match, current->con->window)) {
237 printf("matches window!\n");
238 TAILQ_INSERT_TAIL(&owindows, current, owindows);
240 printf("doesnt match\n");
246 TAILQ_FOREACH(current, &owindows, owindows) {
247 printf("matching: %p / %s\n", current->con, current->con->name);
256 printf("criteria: class = %s\n", $<string>3);
257 current_match.class = $<string>3;
261 printf("criteria: id = %s\n", $<string>3);
262 /* TODO: correctly parse number */
263 current_match.con_id = (Con*)atoi($<string>3);
264 printf("id as int = %p\n", current_match.con_id);
268 printf("criteria: window id = %s\n", $<string>3);
269 /* TODO: correctly parse number */
270 current_match.id = atoi($<string>3);
271 printf("window id as int = %d\n", current_match.id);
275 printf("criteria: mark = %s\n", $<string>3);
276 current_match.mark = $<string>3;
282 | operation optwhitespace
283 | operations ',' optwhitespace operation
312 TOK_EXEC WHITESPACE STR
314 printf("should execute %s\n", $<string>3);
315 start_application($<string>3);
323 printf("exit, bye bye\n");
331 printf("reloading\n");
332 load_configuration(conn, NULL, true);
333 /* Send an IPC event just in case the ws names have changed */
334 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
341 printf("restarting i3\n");
349 printf("should attach\n");
358 printf("should focus\n");
359 if (match_is_empty(¤t_match)) {
360 /* TODO: better error message */
361 LOG("Error: The focus command requires you to use some criteria.\n");
365 /* TODO: warning if the match contains more than one entry. does not
366 * make so much sense when focusing */
367 TAILQ_FOREACH(current, &owindows, owindows) {
368 LOG("focusing %p / %s\n", current->con, current->con->name);
369 con_focus(current->con);
379 printf("killing!\n");
380 /* check if the match is empty, not if the result is empty */
381 if (match_is_empty(¤t_match))
384 TAILQ_FOREACH(current, &owindows, owindows) {
385 printf("matching: %p / %s\n", current->con, current->con->name);
386 tree_close(current->con, true, false);
394 TOK_WORKSPACE WHITESPACE STR
396 printf("should switch to workspace %s\n", $<string>3);
397 workspace_show($<string>3);
405 printf("opening new container\n");
406 Con *con = tree_open_con(NULL, true);
407 asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
414 printf("toggling fullscreen\n");
417 /* check if the match is empty, not if the result is empty */
418 if (match_is_empty(¤t_match))
419 con_toggle_fullscreen(focused);
421 TAILQ_FOREACH(current, &owindows, owindows) {
422 printf("matching: %p / %s\n", current->con, current->con->name);
423 con_toggle_fullscreen(current->con);
431 TOK_NEXT WHITESPACE direction
433 /* TODO: use matches */
434 printf("should select next window in direction %c\n", $<chr>3);
435 tree_next('n', ($<chr>3 == 'v' ? VERT : HORIZ));
440 TOK_PREV WHITESPACE direction
442 /* TODO: use matches */
443 printf("should select prev window in direction %c\n", $<chr>3);
444 tree_next('p', ($<chr>3 == 'v' ? VERT : HORIZ));
449 TOK_SPLIT WHITESPACE direction
451 /* TODO: use matches */
452 printf("splitting in direction %c\n", $<chr>3);
453 tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
458 TOK_HORIZONTAL { $<chr>$ = 'h'; }
459 | 'h' { $<chr>$ = 'h'; }
460 | TOK_VERTICAL { $<chr>$ = 'v'; }
461 | 'v' { $<chr>$ = 'v'; }
465 TOK_MODE WHITESPACE window_mode
467 if ($<number>3 == TOK_TOGGLE) {
468 printf("should toggle mode\n");
469 toggle_floating_mode(focused, false);
471 printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
472 if ($<number>3 == TOK_FLOATING) {
473 floating_enable(focused, false);
475 floating_disable(focused, false);
482 TOK_FLOATING { $<number>$ = TOK_FLOATING; }
483 | TOK_TILING { $<number>$ = TOK_TILING; }
484 | TOK_TOGGLE { $<number>$ = TOK_TOGGLE; }
488 TOK_BORDER WHITESPACE border_style
490 printf("border style should be changed to %d\n", $<number>3);
493 /* check if the match is empty, not if the result is empty */
494 if (match_is_empty(¤t_match))
495 focused->border_style = $<number>3;
497 TAILQ_FOREACH(current, &owindows, owindows) {
498 printf("matching: %p / %s\n", current->con, current->con->name);
499 current->con->border_style = $<number>3;
506 TOK_NORMAL { $<number>$ = BS_NORMAL; }
507 | TOK_NONE { $<number>$ = BS_NONE; }
508 | TOK_1PIXEL { $<number>$ = BS_1PIXEL; }
513 TOK_LEVEL WHITESPACE level_direction
515 printf("level %c\n", $<chr>3);
523 TOK_UP { $<chr>$ = 'u'; }
524 | TOK_DOWN { $<chr>$ = 'd'; }
528 TOK_MOVE WHITESPACE direction
530 printf("moving in direction %d\n", $<number>3);
531 tree_move($<number>3);
533 | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
537 printf("should move window to workspace %s\n", $<string>5);
538 /* get the workspace */
539 Con *ws = workspace_get($<string>5);
542 /* check if the match is empty, not if the result is empty */
543 if (match_is_empty(¤t_match))
544 con_move_to_workspace(focused, ws);
546 TAILQ_FOREACH(current, &owindows, owindows) {
547 printf("matching: %p / %s\n", current->con, current->con->name);
548 con_move_to_workspace(current->con, ws);
555 TOK_RESTORE WHITESPACE STR
557 printf("restoring \"%s\"\n", $<string>3);
558 tree_append_json($<string>3);
564 TOK_LAYOUT WHITESPACE layout_mode
566 printf("changing layout to %d\n", $<number>3);
569 /* check if the match is empty, not if the result is empty */
570 if (match_is_empty(¤t_match))
571 con_set_layout(focused->parent, $<number>3);
573 TAILQ_FOREACH(current, &owindows, owindows) {
574 printf("matching: %p / %s\n", current->con, current->con->name);
575 con_set_layout(current->con, $<number>3);
583 TOK_DEFAULT { $<number>$ = L_DEFAULT; }
584 | TOK_STACKED { $<number>$ = L_STACKED; }
585 | TOK_TABBED { $<number>$ = L_TABBED; }
589 TOK_MARK WHITESPACE STR
591 printf("marking window with str %s\n", $<string>3);
594 /* check if the match is empty, not if the result is empty */
595 if (match_is_empty(¤t_match))
596 focused->mark = sstrdup($<string>3);
598 TAILQ_FOREACH(current, &owindows, owindows) {
599 printf("matching: %p / %s\n", current->con, current->con->name);
600 current->con->mark = sstrdup($<string>3);
609 TOK_NOP WHITESPACE STR
611 printf("-------------------------------------------------\n");
612 printf(" NOP: %s\n", $<string>3);
613 printf("-------------------------------------------------\n");
619 TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
621 /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
622 printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
623 int direction = $<number>5;
625 int ppt = $<number>7;
626 if ($<number>3 == TOK_SHRINK) {
631 if (con_is_floating(focused)) {
632 printf("floating resize\n");
633 if (direction == TOK_UP) {
634 focused->parent->rect.y -= px;
635 focused->parent->rect.height += px;
636 } else if (direction == TOK_DOWN) {
637 focused->rect.height += px;
638 } else if (direction == TOK_LEFT) {
639 focused->rect.x -= px;
640 focused->rect.width += px;
642 focused->rect.width += px;
645 LOG("tiling resize\n");
646 /* get the default percentage */
647 int children = con_num_children(focused->parent);
649 LOG("ins. %d children\n", children);
650 double percentage = 1.0 / children;
651 LOG("default percentage = %f\n", percentage);
653 if (direction == TOK_UP || direction == TOK_LEFT) {
654 other = TAILQ_PREV(focused, nodes_head, nodes);
656 other = TAILQ_NEXT(focused, nodes);
658 if (other == TAILQ_END(workspaces)) {
659 LOG("No other container in this direction found, cannot resize.\n");
662 LOG("other->percent = %f\n", other->percent);
663 LOG("focused->percent before = %f\n", focused->percent);
664 if (focused->percent == 0.0)
665 focused->percent = percentage;
666 if (other->percent == 0.0)
667 other->percent = percentage;
668 focused->percent += ((double)ppt / 100.0);
669 other->percent -= ((double)ppt / 100.0);
670 LOG("focused->percent after = %f\n", focused->percent);
671 LOG("other->percent after = %f\n", other->percent);
681 | WHITESPACE NUMBER WHITESPACE TOK_PX
683 $<number>$ = $<number>2;
692 | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
694 $<number>$ = $<number>4;
699 TOK_GROW { $<number>$ = TOK_GROW; }
700 | TOK_SHRINK { $<number>$ = TOK_SHRINK; }
704 TOK_UP { $<number>$ = TOK_UP; }
705 | TOK_DOWN { $<number>$ = TOK_DOWN; }
706 | TOK_LEFT { $<number>$ = TOK_LEFT; }
707 | TOK_RIGHT { $<number>$ = TOK_RIGHT; }