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 context *context;
26 static Match current_match;
29 * Helper data structure for an operation window (window on which the operation
30 * will be performed). Used to build the TAILQ owindows.
33 typedef struct owindow {
35 TAILQ_ENTRY(owindow) owindows;
37 static TAILQ_HEAD(owindows_head, owindow) owindows;
39 /* Holds the JSON which will be returned via IPC or NULL for the default return
41 static char *json_output;
43 /* We don’t need yydebug for now, as we got decent error messages using
44 * yyerror(). Should you ever want to extend the parser, it might be handy
45 * to just comment it in again, so it stays here. */
48 void cmdyyerror(const char *error_message) {
50 ELOG("CMD: %s\n", error_message);
51 ELOG("CMD: in command:\n");
52 ELOG("CMD: %s\n", context->line_copy);
54 for (int c = 1; c <= context->last_column; c++)
55 if (c >= context->first_column)
60 context->compact_error = sstrdup(error_message);
67 char *parse_cmd(const char *new) {
68 cmdyy_scan_string(new);
70 match_init(¤t_match);
71 context = scalloc(sizeof(struct context));
72 context->filename = "cmd";
74 if (cmdyyparse() != 0) {
75 fprintf(stderr, "Could not parse command\n");
76 asprintf(&json_output, "{\"success\":false, \"error\":\"%s at position %d\"}",
77 context->compact_error, context->first_column);
78 FREE(context->line_copy);
79 FREE(context->compact_error);
83 printf("done, json output = %s\n", json_output);
85 FREE(context->line_copy);
86 FREE(context->compact_error);
94 %lex-param { struct context *context }
102 %token TOK_ATTACH "attach"
103 %token TOK_EXEC "exec"
104 %token TOK_EXIT "exit"
105 %token TOK_RELOAD "reload"
106 %token TOK_RESTART "restart"
107 %token TOK_KILL "kill"
108 %token TOK_FULLSCREEN "fullscreen"
109 %token TOK_GLOBAL "global"
110 %token TOK_LAYOUT "layout"
111 %token TOK_DEFAULT "default"
112 %token TOK_STACKED "stacked"
113 %token TOK_TABBED "tabbed"
114 %token TOK_BORDER "border"
115 %token TOK_NORMAL "normal"
116 %token TOK_NONE "none"
117 %token TOK_1PIXEL "1pixel"
118 %token TOK_MODE "mode"
119 %token TOK_TILING "tiling"
120 %token TOK_FLOATING "floating"
121 %token TOK_WORKSPACE "workspace"
122 %token TOK_TOGGLE "toggle"
123 %token TOK_FOCUS "focus"
124 %token TOK_MOVE "move"
125 %token TOK_OPEN "open"
126 %token TOK_NEXT "next"
127 %token TOK_PREV "prev"
128 %token TOK_SPLIT "split"
129 %token TOK_HORIZONTAL "horizontal"
130 %token TOK_VERTICAL "vertical"
131 %token TOK_LEVEL "level"
133 %token TOK_DOWN "down"
134 %token TOK_LEFT "left"
135 %token TOK_RIGHT "right"
136 %token TOK_RESTORE "restore"
137 %token TOK_MARK "mark"
138 %token TOK_RESIZE "resize"
139 %token TOK_GROW "grow"
140 %token TOK_SHRINK "shrink"
146 %token TOK_CLASS "class"
148 %token TOK_CON_ID "con_id"
150 %token WHITESPACE "<whitespace>"
151 %token STR "<string>"
152 %token NUMBER "<number>"
157 commands optwhitespace ';' optwhitespace command
162 printf("single command completely parsed, dropping state...\n");
163 while (!TAILQ_EMPTY(&owindows)) {
164 current = TAILQ_FIRST(&owindows);
165 TAILQ_REMOVE(&owindows, current, owindows);
168 match_init(¤t_match);
177 match optwhitespace operations
181 | matchstart optwhitespace criteria optwhitespace matchend
183 printf("match parsed\n");
191 match_init(¤t_match);
192 TAILQ_INIT(&owindows);
195 TAILQ_FOREACH(con, &all_cons, all_cons) {
196 owindow *ow = smalloc(sizeof(owindow));
198 TAILQ_INSERT_TAIL(&owindows, ow, owindows);
206 owindow *next, *current;
208 printf("match specification finished, matching...\n");
209 /* copy the old list head to iterate through it and start with a fresh
210 * list which will contain only matching windows */
211 struct owindows_head old = owindows;
212 TAILQ_INIT(&owindows);
213 for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
214 /* make a copy of the next pointer and advance the pointer to the
215 * next element as we are going to invalidate the element’s
216 * next/prev pointers by calling TAILQ_INSERT_TAIL later */
218 next = TAILQ_NEXT(next, owindows);
220 printf("checking if con %p / %s matches\n", current->con, current->con->name);
221 if (current_match.con_id != NULL) {
222 if (current_match.con_id == current->con) {
223 printf("matches container!\n");
224 TAILQ_INSERT_TAIL(&owindows, current, owindows);
227 } else if (current_match.mark != NULL && current->con->mark != NULL &&
228 strcasecmp(current_match.mark, current->con->mark) == 0) {
229 printf("match by mark\n");
230 TAILQ_INSERT_TAIL(&owindows, current, owindows);
233 if (current->con->window == NULL)
235 if (match_matches_window(¤t_match, current->con->window)) {
236 printf("matches window!\n");
237 TAILQ_INSERT_TAIL(&owindows, current, owindows);
239 printf("doesnt match\n");
245 TAILQ_FOREACH(current, &owindows, owindows) {
246 printf("matching: %p / %s\n", current->con, current->con->name);
255 printf("criteria: class = %s\n", $<string>3);
256 current_match.class = $<string>3;
260 printf("criteria: id = %s\n", $<string>3);
261 /* TODO: correctly parse number */
262 current_match.con_id = (Con*)atoi($<string>3);
263 printf("id as int = %p\n", current_match.con_id);
267 printf("criteria: window id = %s\n", $<string>3);
268 /* TODO: correctly parse number */
269 current_match.id = atoi($<string>3);
270 printf("window id as int = %d\n", current_match.id);
274 printf("criteria: mark = %s\n", $<string>3);
275 current_match.mark = $<string>3;
280 operation optwhitespace
281 | operations ',' optwhitespace operation
310 TOK_EXEC WHITESPACE STR
312 printf("should execute %s\n", $<string>3);
313 start_application($<string>3);
321 printf("exit, bye bye\n");
329 printf("reloading\n");
330 load_configuration(conn, NULL, true);
331 /* Send an IPC event just in case the ws names have changed */
332 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
339 printf("restarting i3\n");
347 printf("should attach\n");
356 printf("should focus\n");
357 if (match_is_empty(¤t_match)) {
358 /* TODO: better error message */
359 LOG("Error: The focus command requires you to use some criteria.\n");
363 /* TODO: warning if the match contains more than one entry. does not
364 * make so much sense when focusing */
365 TAILQ_FOREACH(current, &owindows, owindows) {
366 LOG("focusing %p / %s\n", current->con, current->con->name);
367 con_focus(current->con);
377 printf("killing!\n");
378 /* check if the match is empty, not if the result is empty */
379 if (match_is_empty(¤t_match))
382 TAILQ_FOREACH(current, &owindows, owindows) {
383 printf("matching: %p / %s\n", current->con, current->con->name);
384 tree_close(current->con, true, false);
392 TOK_WORKSPACE WHITESPACE STR
394 printf("should switch to workspace %s\n", $<string>3);
395 workspace_show($<string>3);
403 printf("opening new container\n");
404 Con *con = tree_open_con(NULL);
406 asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
413 printf("toggling fullscreen\n");
416 /* check if the match is empty, not if the result is empty */
417 if (match_is_empty(¤t_match))
418 con_toggle_fullscreen(focused);
420 TAILQ_FOREACH(current, &owindows, owindows) {
421 printf("matching: %p / %s\n", current->con, current->con->name);
422 con_toggle_fullscreen(current->con);
430 TOK_NEXT WHITESPACE direction
432 /* TODO: use matches */
433 printf("should select next window in direction %c\n", $<chr>3);
434 tree_next('n', ($<chr>3 == 'v' ? VERT : HORIZ));
439 TOK_PREV WHITESPACE direction
441 /* TODO: use matches */
442 printf("should select prev window in direction %c\n", $<chr>3);
443 tree_next('p', ($<chr>3 == 'v' ? VERT : HORIZ));
448 TOK_SPLIT WHITESPACE direction
450 /* TODO: use matches */
451 printf("splitting in direction %c\n", $<chr>3);
452 tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
457 TOK_HORIZONTAL { $<chr>$ = 'h'; }
458 | 'h' { $<chr>$ = 'h'; }
459 | TOK_VERTICAL { $<chr>$ = 'v'; }
460 | 'v' { $<chr>$ = 'v'; }
464 TOK_MODE WHITESPACE window_mode
466 if ($<number>3 == TOK_TOGGLE) {
467 printf("should toggle mode\n");
468 toggle_floating_mode(focused, false);
470 printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
471 if ($<number>3 == TOK_FLOATING) {
472 floating_enable(focused, false);
474 floating_disable(focused, false);
481 TOK_FLOATING { $<number>$ = TOK_FLOATING; }
482 | TOK_TILING { $<number>$ = TOK_TILING; }
483 | TOK_TOGGLE { $<number>$ = TOK_TOGGLE; }
487 TOK_BORDER WHITESPACE border_style
489 printf("border style should be changed to %d\n", $<number>3);
492 /* check if the match is empty, not if the result is empty */
493 if (match_is_empty(¤t_match))
494 focused->border_style = $<number>3;
496 TAILQ_FOREACH(current, &owindows, owindows) {
497 printf("matching: %p / %s\n", current->con, current->con->name);
498 current->con->border_style = $<number>3;
505 TOK_NORMAL { $<number>$ = BS_NORMAL; }
506 | TOK_NONE { $<number>$ = BS_NONE; }
507 | TOK_1PIXEL { $<number>$ = BS_1PIXEL; }
512 TOK_LEVEL WHITESPACE level_direction
514 printf("level %c\n", $<chr>3);
522 TOK_UP { $<chr>$ = 'u'; }
523 | TOK_DOWN { $<chr>$ = 'd'; }
527 TOK_MOVE WHITESPACE direction
529 printf("moving in direction %d\n", $<number>3);
530 tree_move($<number>3);
532 | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
536 printf("should move window to workspace %s\n", $<string>5);
537 /* get the workspace */
538 Con *ws = workspace_get($<string>5, NULL);
541 /* check if the match is empty, not if the result is empty */
542 if (match_is_empty(¤t_match))
543 con_move_to_workspace(focused, ws);
545 TAILQ_FOREACH(current, &owindows, owindows) {
546 printf("matching: %p / %s\n", current->con, current->con->name);
547 con_move_to_workspace(current->con, ws);
554 TOK_RESTORE WHITESPACE STR
556 printf("restoring \"%s\"\n", $<string>3);
557 tree_append_json($<string>3);
563 TOK_LAYOUT WHITESPACE layout_mode
565 printf("changing layout to %d\n", $<number>3);
568 /* check if the match is empty, not if the result is empty */
569 if (match_is_empty(¤t_match))
570 con_set_layout(focused->parent, $<number>3);
572 TAILQ_FOREACH(current, &owindows, owindows) {
573 printf("matching: %p / %s\n", current->con, current->con->name);
574 con_set_layout(current->con, $<number>3);
582 TOK_DEFAULT { $<number>$ = L_DEFAULT; }
583 | TOK_STACKED { $<number>$ = L_STACKED; }
584 | TOK_TABBED { $<number>$ = L_TABBED; }
588 TOK_MARK WHITESPACE STR
590 printf("marking window with str %s\n", $<string>3);
593 /* check if the match is empty, not if the result is empty */
594 if (match_is_empty(¤t_match))
595 focused->mark = sstrdup($<string>3);
597 TAILQ_FOREACH(current, &owindows, owindows) {
598 printf("matching: %p / %s\n", current->con, current->con->name);
599 current->con->mark = sstrdup($<string>3);
608 TOK_NOP WHITESPACE STR
610 printf("-------------------------------------------------\n");
611 printf(" NOP: %s\n", $<string>3);
612 printf("-------------------------------------------------\n");
618 TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
620 /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
621 printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
622 int direction = $<number>5;
624 int ppt = $<number>7;
625 if ($<number>3 == TOK_SHRINK) {
630 if (con_is_floating(focused)) {
631 printf("floating resize\n");
632 if (direction == TOK_UP) {
633 focused->parent->rect.y -= px;
634 focused->parent->rect.height += px;
635 } else if (direction == TOK_DOWN) {
636 focused->rect.height += px;
637 } else if (direction == TOK_LEFT) {
638 focused->rect.x -= px;
639 focused->rect.width += px;
641 focused->rect.width += px;
644 LOG("tiling resize\n");
645 /* get the default percentage */
646 int children = con_num_children(focused->parent);
648 LOG("ins. %d children\n", children);
649 double percentage = 1.0 / children;
650 LOG("default percentage = %f\n", percentage);
652 if (direction == TOK_UP || direction == TOK_LEFT) {
653 other = TAILQ_PREV(focused, nodes_head, nodes);
655 other = TAILQ_NEXT(focused, nodes);
657 if (other == TAILQ_END(workspaces)) {
658 LOG("No other container in this direction found, cannot resize.\n");
661 LOG("other->percent = %f\n", other->percent);
662 LOG("focused->percent before = %f\n", focused->percent);
663 if (focused->percent == 0.0)
664 focused->percent = percentage;
665 if (other->percent == 0.0)
666 other->percent = percentage;
667 focused->percent += ((double)ppt / 100.0);
668 other->percent -= ((double)ppt / 100.0);
669 LOG("focused->percent after = %f\n", focused->percent);
670 LOG("other->percent after = %f\n", other->percent);
680 | WHITESPACE NUMBER WHITESPACE TOK_PX
682 $<number>$ = $<number>2;
691 | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
693 $<number>$ = $<number>4;
698 TOK_GROW { $<number>$ = TOK_GROW; }
699 | TOK_SHRINK { $<number>$ = TOK_SHRINK; }
703 TOK_UP { $<number>$ = TOK_UP; }
704 | TOK_DOWN { $<number>$ = TOK_DOWN; }
705 | TOK_LEFT { $<number>$ = TOK_LEFT; }
706 | TOK_RIGHT { $<number>$ = TOK_RIGHT; }