3 * vim:ts=4:sw=4:expandtab
5 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 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 /** When the command did not include match criteria (!), we use the currently
21 * focused command. Do not confuse this case with a command which included
22 * criteria but which did not match any windows. This macro has to be called in
25 #define HANDLE_EMPTY_MATCH do { \
26 if (match_is_empty(¤t_match)) { \
27 owindow *ow = smalloc(sizeof(owindow)); \
29 TAILQ_INIT(&owindows); \
30 TAILQ_INSERT_TAIL(&owindows, ow, owindows); \
34 typedef struct yy_buffer_state *YY_BUFFER_STATE;
35 extern int cmdyylex(struct context *context);
36 extern int cmdyyparse(void);
38 YY_BUFFER_STATE cmdyy_scan_string(const char *);
40 static struct context *context;
41 static Match current_match;
44 * Helper data structure for an operation window (window on which the operation
45 * will be performed). Used to build the TAILQ owindows.
48 typedef struct owindow {
50 TAILQ_ENTRY(owindow) owindows;
52 static TAILQ_HEAD(owindows_head, owindow) owindows;
54 /* Holds the JSON which will be returned via IPC or NULL for the default return
56 static char *json_output;
58 /* We don’t need yydebug for now, as we got decent error messages using
59 * yyerror(). Should you ever want to extend the parser, it might be handy
60 * to just comment it in again, so it stays here. */
63 void cmdyyerror(const char *error_message) {
65 ELOG("CMD: %s\n", error_message);
66 ELOG("CMD: in command:\n");
67 ELOG("CMD: %s\n", context->line_copy);
69 for (int c = 1; c <= context->last_column; c++)
70 if (c >= context->first_column)
75 context->compact_error = sstrdup(error_message);
82 char *parse_cmd(const char *new) {
83 LOG("COMMAND: *%s*\n", new);
84 cmdyy_scan_string(new);
86 match_init(¤t_match);
87 context = scalloc(sizeof(struct context));
88 context->filename = "cmd";
90 if (cmdyyparse() != 0) {
91 fprintf(stderr, "Could not parse command\n");
92 asprintf(&json_output, "{\"success\":false, \"error\":\"%s at position %d\"}",
93 context->compact_error, context->first_column);
94 FREE(context->line_copy);
95 FREE(context->compact_error);
99 printf("done, json output = %s\n", json_output);
101 FREE(context->line_copy);
102 FREE(context->compact_error);
110 %lex-param { struct context *context }
118 %token TOK_EXEC "exec"
119 %token TOK_EXIT "exit"
120 %token TOK_RELOAD "reload"
121 %token TOK_RESTART "restart"
122 %token TOK_KILL "kill"
123 %token TOK_WINDOW "window"
124 %token TOK_CLIENT "client"
125 %token TOK_FULLSCREEN "fullscreen"
126 %token TOK_GLOBAL "global"
127 %token TOK_LAYOUT "layout"
128 %token TOK_DEFAULT "default"
129 %token TOK_STACKED "stacked"
130 %token TOK_TABBED "tabbed"
131 %token TOK_BORDER "border"
132 %token TOK_NORMAL "normal"
133 %token TOK_NONE "none"
134 %token TOK_1PIXEL "1pixel"
135 %token TOK_MODE "mode"
136 %token TOK_TILING "tiling"
137 %token TOK_FLOATING "floating"
138 %token TOK_ENABLE "enable"
139 %token TOK_DISABLE "disable"
140 %token TOK_WORKSPACE "workspace"
141 %token TOK_TOGGLE "toggle"
142 %token TOK_FOCUS "focus"
143 %token TOK_MOVE "move"
144 %token TOK_OPEN "open"
145 %token TOK_PREV "prev"
146 %token TOK_SPLIT "split"
147 %token TOK_HORIZONTAL "horizontal"
148 %token TOK_VERTICAL "vertical"
150 %token TOK_DOWN "down"
151 %token TOK_LEFT "left"
152 %token TOK_RIGHT "right"
153 %token TOK_PARENT "parent"
154 %token TOK_CHILD "child"
155 %token TOK_APPEND_LAYOUT "append_layout"
156 %token TOK_MARK "mark"
157 %token TOK_RESIZE "resize"
158 %token TOK_GROW "grow"
159 %token TOK_SHRINK "shrink"
165 %token TOK_CLASS "class"
167 %token TOK_CON_ID "con_id"
168 %token TOK_TITLE "title"
170 %token <string> STR "<string>"
171 %token <number> NUMBER "<number>"
173 %type <number> direction
174 %type <number> split_direction
176 %type <number> boolean
177 %type <number> border_style
178 %type <number> layout_mode
179 %type <number> resize_px
180 %type <number> resize_way
181 %type <number> resize_tiling
182 %type <number> optional_kill_mode
192 printf("single command completely parsed, dropping state...\n");
193 while (!TAILQ_EMPTY(&owindows)) {
194 current = TAILQ_FIRST(&owindows);
195 TAILQ_REMOVE(&owindows, current, owindows);
198 match_init(¤t_match);
207 | matchstart criteria matchend
209 printf("match parsed\n");
217 match_init(¤t_match);
218 TAILQ_INIT(&owindows);
221 TAILQ_FOREACH(con, &all_cons, all_cons) {
222 owindow *ow = smalloc(sizeof(owindow));
224 TAILQ_INSERT_TAIL(&owindows, ow, owindows);
232 owindow *next, *current;
234 printf("match specification finished, matching...\n");
235 /* copy the old list head to iterate through it and start with a fresh
236 * list which will contain only matching windows */
237 struct owindows_head old = owindows;
238 TAILQ_INIT(&owindows);
239 for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
240 /* make a copy of the next pointer and advance the pointer to the
241 * next element as we are going to invalidate the element’s
242 * next/prev pointers by calling TAILQ_INSERT_TAIL later */
244 next = TAILQ_NEXT(next, owindows);
246 printf("checking if con %p / %s matches\n", current->con, current->con->name);
247 if (current_match.con_id != NULL) {
248 if (current_match.con_id == current->con) {
249 printf("matches container!\n");
250 TAILQ_INSERT_TAIL(&owindows, current, owindows);
253 } else if (current_match.mark != NULL && current->con->mark != NULL &&
254 strcasecmp(current_match.mark, current->con->mark) == 0) {
255 printf("match by mark\n");
256 TAILQ_INSERT_TAIL(&owindows, current, owindows);
259 if (current->con->window == NULL)
261 if (match_matches_window(¤t_match, current->con->window)) {
262 printf("matches window!\n");
263 TAILQ_INSERT_TAIL(&owindows, current, owindows);
265 printf("doesnt match\n");
271 TAILQ_FOREACH(current, &owindows, owindows) {
272 printf("matching: %p / %s\n", current->con, current->con->name);
286 printf("criteria: class = %s\n", $3);
287 current_match.class = $3;
291 printf("criteria: id = %s\n", $3);
293 long parsed = strtol($3, &end, 10);
294 if (parsed == LONG_MIN ||
295 parsed == LONG_MAX ||
297 (end && *end != '\0')) {
298 ELOG("Could not parse con id \"%s\"\n", $3);
300 current_match.con_id = (Con*)parsed;
301 printf("id as int = %p\n", current_match.con_id);
306 printf("criteria: window id = %s\n", $3);
308 long parsed = strtol($3, &end, 10);
309 if (parsed == LONG_MIN ||
310 parsed == LONG_MAX ||
312 (end && *end != '\0')) {
313 ELOG("Could not parse window id \"%s\"\n", $3);
315 current_match.id = parsed;
316 printf("window id as int = %d\n", current_match.id);
321 printf("criteria: mark = %s\n", $3);
322 current_match.mark = $3;
326 printf("criteria: title = %s\n", $3);
327 current_match.title = $3;
333 | operations ',' operation
360 printf("should execute %s\n", $2);
361 start_application($2);
369 printf("exit, bye bye\n");
377 printf("reloading\n");
378 load_configuration(conn, NULL, true);
380 /* Send an IPC event just in case the ws names have changed */
381 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
388 printf("restarting i3\n");
398 if (match_is_empty(¤t_match)) {
399 ELOG("You have to specify which window/container should be focused.\n");
400 ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
402 asprintf(&json_output, "{\"success\":false, \"error\":\"You have to "
403 "specify which window/container should be focused\"}");
408 TAILQ_FOREACH(current, &owindows, owindows) {
409 LOG("focusing %p / %s\n", current->con, current->con->name);
410 con_focus(current->con);
415 LOG("WARNING: Your criteria for the focus command matches %d containers, "
416 "while only exactly one container can be focused at a time.\n", count);
420 | TOK_FOCUS direction
425 LOG("Focusing left\n");
426 tree_next('p', HORIZ);
429 LOG("Focusing right\n");
430 tree_next('n', HORIZ);
433 LOG("Focusing up\n");
434 tree_next('p', VERT);
437 LOG("Focusing down\n");
438 tree_next('n', VERT);
441 ELOG("Invalid focus direction (%d)\n", direction);
449 if ($2 == TOK_PARENT)
458 TOK_PARENT { $$ = TOK_PARENT; }
459 | TOK_CHILD { $$ = TOK_CHILD; }
463 TOK_KILL optional_kill_mode
467 printf("killing!\n");
468 /* check if the match is empty, not if the result is empty */
469 if (match_is_empty(¤t_match))
472 TAILQ_FOREACH(current, &owindows, owindows) {
473 printf("matching: %p / %s\n", current->con, current->con->name);
474 tree_close(current->con, $2, false);
483 /* empty */ { $$ = KILL_WINDOW; }
484 | TOK_WINDOW { $$ = KILL_WINDOW; }
485 | TOK_CLIENT { $$ = KILL_CLIENT; }
491 printf("should switch to workspace %s\n", $2);
502 printf("opening new container\n");
503 Con *con = tree_open_con(NULL, NULL);
505 asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
514 printf("toggling fullscreen\n");
520 TAILQ_FOREACH(current, &owindows, owindows) {
521 printf("matching: %p / %s\n", current->con, current->con->name);
522 con_toggle_fullscreen(current->con);
530 TOK_SPLIT split_direction
532 /* TODO: use matches */
533 printf("splitting in direction %c\n", $2);
534 tree_split(focused, ($2 == 'v' ? VERT : HORIZ));
541 TOK_HORIZONTAL { $$ = 'h'; }
543 | TOK_VERTICAL { $$ = 'v'; }
553 TAILQ_FOREACH(current, &owindows, owindows) {
554 printf("matching: %p / %s\n", current->con, current->con->name);
555 if ($2 == TOK_TOGGLE) {
556 printf("should toggle mode\n");
557 toggle_floating_mode(current->con, false);
559 printf("should switch mode to %s\n", ($2 == TOK_FLOATING ? "floating" : "tiling"));
560 if ($2 == TOK_ENABLE) {
561 floating_enable(current->con, false);
563 floating_disable(current->con, false);
573 TOK_ENABLE { $$ = TOK_ENABLE; }
574 | TOK_DISABLE { $$ = TOK_DISABLE; }
575 | TOK_TOGGLE { $$ = TOK_TOGGLE; }
579 TOK_BORDER border_style
581 printf("border style should be changed to %d\n", $2);
586 TAILQ_FOREACH(current, &owindows, owindows) {
587 printf("matching: %p / %s\n", current->con, current->con->name);
588 current->con->border_style = $2;
596 TOK_NORMAL { $$ = BS_NORMAL; }
597 | TOK_NONE { $$ = BS_NONE; }
598 | TOK_1PIXEL { $$ = BS_1PIXEL; }
604 printf("moving in direction %d\n", $2);
609 | TOK_MOVE TOK_WORKSPACE STR
613 printf("should move window to workspace %s\n", $3);
614 /* get the workspace */
615 Con *ws = workspace_get($3, NULL);
620 TAILQ_FOREACH(current, &owindows, owindows) {
621 printf("matching: %p / %s\n", current->con, current->con->name);
622 con_move_to_workspace(current->con, ws);
630 TOK_APPEND_LAYOUT STR
632 printf("restoring \"%s\"\n", $2);
633 tree_append_json($2);
640 TOK_LAYOUT layout_mode
642 printf("changing layout to %d\n", $2);
645 /* check if the match is empty, not if the result is empty */
646 if (match_is_empty(¤t_match))
647 con_set_layout(focused->parent, $2);
649 TAILQ_FOREACH(current, &owindows, owindows) {
650 printf("matching: %p / %s\n", current->con, current->con->name);
651 con_set_layout(current->con, $2);
660 TOK_DEFAULT { $$ = L_DEFAULT; }
661 | TOK_STACKED { $$ = L_STACKED; }
662 | TOK_TABBED { $$ = L_TABBED; }
668 printf("marking window with str %s\n", $2);
673 TAILQ_FOREACH(current, &owindows, owindows) {
674 printf("matching: %p / %s\n", current->con, current->con->name);
675 current->con->mark = sstrdup($2);
687 printf("-------------------------------------------------\n");
688 printf(" NOP: %s\n", $2);
689 printf("-------------------------------------------------\n");
695 TOK_RESIZE resize_way direction resize_px resize_tiling
697 /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
698 printf("resizing in way %d, direction %d, px %d or ppt %d\n", $2, $3, $4, $5);
702 if ($2 == TOK_SHRINK) {
707 if (con_is_floating(focused)) {
708 printf("floating resize\n");
709 if (direction == TOK_UP) {
710 focused->parent->rect.y -= px;
711 focused->parent->rect.height += px;
712 } else if (direction == TOK_DOWN) {
713 focused->rect.height += px;
714 } else if (direction == TOK_LEFT) {
715 focused->rect.x -= px;
716 focused->rect.width += px;
718 focused->rect.width += px;
721 LOG("tiling resize\n");
722 /* get the default percentage */
723 int children = con_num_children(focused->parent);
725 LOG("ins. %d children\n", children);
726 double percentage = 1.0 / children;
727 LOG("default percentage = %f\n", percentage);
729 if (direction == TOK_UP || direction == TOK_LEFT) {
730 other = TAILQ_PREV(focused, nodes_head, nodes);
732 other = TAILQ_NEXT(focused, nodes);
734 if (other == TAILQ_END(workspaces)) {
735 LOG("No other container in this direction found, cannot resize.\n");
738 LOG("other->percent = %f\n", other->percent);
739 LOG("focused->percent before = %f\n", focused->percent);
740 if (focused->percent == 0.0)
741 focused->percent = percentage;
742 if (other->percent == 0.0)
743 other->percent = percentage;
744 focused->percent += ((double)ppt / 100.0);
745 other->percent -= ((double)ppt / 100.0);
746 LOG("focused->percent after = %f\n", focused->percent);
747 LOG("other->percent after = %f\n", other->percent);
770 | TOK_OR NUMBER TOK_PPT
777 TOK_GROW { $$ = TOK_GROW; }
778 | TOK_SHRINK { $$ = TOK_SHRINK; }
782 TOK_UP { $$ = TOK_UP; }
783 | TOK_DOWN { $$ = TOK_DOWN; }
784 | TOK_LEFT { $$ = TOK_LEFT; }
785 | TOK_RIGHT { $$ = TOK_RIGHT; }