git.sur5r.net Git - i3/i3/blob - src/cmdparse.y

   1 %{
   2 /*
   3  * vim:ts=4:sw=4:expandtab
   4  *
   5  * i3 - an improved dynamic tiling window manager
   6  * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
   7  *
   8  * cmdparse.y: the parser for commands you send to i3 (or bind on keys)
   9  *
  10
  11  */
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <unistd.h>
  15 #include <fcntl.h>
  16
  17 #include "all.h"
  18
  19 typedef struct yy_buffer_state *YY_BUFFER_STATE;
  20 extern int cmdyylex(struct context *context);
  21 extern int cmdyyparse(void);
  22 extern FILE *cmdyyin;
  23 YY_BUFFER_STATE cmdyy_scan_string(const char *);
  24
  25 static struct bindings_head *current_bindings;
  26 static struct context *context;
  27 static Match current_match;
  28
  29 /*
  30  * Helper data structure for an operation window (window on which the operation
  31  * will be performed). Used to build the TAILQ owindows.
  32  *
  33  */
  34 typedef struct owindow {
  35     Con *con;
  36     TAILQ_ENTRY(owindow) owindows;
  37 } owindow;
  38 static TAILQ_HEAD(owindows_head, owindow) owindows;
  39
  40 /* Holds the JSON which will be returned via IPC or NULL for the default return
  41  * message */
  42 static char *json_output;
  43
  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. */
  47 //int cmdyydebug = 1;
  48
  49 void cmdyyerror(const char *error_message) {
  50     ELOG("\n");
  51     ELOG("CMD: %s\n", error_message);
  52     ELOG("CMD: in command:\n");
  53     ELOG("CMD:   %s\n", context->line_copy);
  54     ELOG("CMD:   ");
  55     for (int c = 1; c <= context->last_column; c++)
  56         if (c >= context->first_column)
  57                 printf("^");
  58         else printf(" ");
  59     printf("\n");
  60     ELOG("\n");
  61     context->compact_error = sstrdup(error_message);
  62 }
  63
  64 int cmdyywrap() {
  65     return 1;
  66 }
  67
  68 char *parse_cmd(const char *new) {
  69     cmdyy_scan_string(new);
  70
  71     match_init(&current_match);
  72     context = scalloc(sizeof(struct context));
  73     context->filename = "cmd";
  74     FREE(json_output);
  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);
  81         free(context);
  82         return json_output;
  83     }
  84     printf("done, json output = %s\n", json_output);
  85
  86     FREE(context->line_copy);
  87     FREE(context->compact_error);
  88     free(context);
  89     return json_output;
  90 }
  91
  92 %}
  93
  94 %error-verbose
  95 %lex-param { struct context *context }
  96
  97 %union {
  98     char *string;
  99     char chr;
 100     int number;
 101 }
 102
 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"
 133 %token TOK_UP "up"
 134 %token TOK_DOWN "down"
 135 %token TOK_LEFT "left"
 136 %token TOK_RIGHT "right"
 137 %token TOK_AFTER "after"
 138 %token TOK_BEFORE "before"
 139 %token TOK_RESTORE "restore"
 140 %token TOK_MARK "mark"
 141 %token TOK_RESIZE "resize"
 142 %token TOK_GROW "grow"
 143 %token TOK_SHRINK "shrink"
 144 %token TOK_PX "px"
 145 %token TOK_OR "or"
 146 %token TOK_PPT "ppt"
 147
 148 %token TOK_CLASS "class"
 149 %token TOK_ID "id"
 150 %token TOK_CON_ID "con_id"
 151
 152 %token WHITESPACE "<whitespace>"
 153 %token STR "<string>"
 154 %token NUMBER "<number>"
 155
 156 %%
 157
 158 commands: /* empty */
 159     | commands optwhitespace ';' optwhitespace command
 160     | command
 161     {
 162         owindow *current;
 163
 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);
 168             free(current);
 169         }
 170         match_init(&current_match);
 171     }
 172     ;
 173
 174 optwhitespace:
 175     | WHITESPACE
 176     ;
 177
 178 command:
 179     match optwhitespace operations
 180     ;
 181
 182 match:
 183     | matchstart optwhitespace criteria optwhitespace matchend
 184     {
 185         printf("match parsed\n");
 186     }
 187     ;
 188
 189 matchstart:
 190     '['
 191     {
 192         printf("start\n");
 193         match_init(&current_match);
 194         TAILQ_INIT(&owindows);
 195         /* copy all_cons */
 196         Con *con;
 197         TAILQ_FOREACH(con, &all_cons, all_cons) {
 198             owindow *ow = smalloc(sizeof(owindow));
 199             ow->con = con;
 200             TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 201         }
 202     }
 203     ;
 204
 205 matchend:
 206     ']'
 207     {
 208         owindow *next, *current;
 209
 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 */
 219             current = next;
 220             next = TAILQ_NEXT(next, owindows);
 221
 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);
 227
 228                 }
 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);
 233
 234             } else {
 235                 if (current->con->window == NULL)
 236                     continue;
 237                 if (match_matches_window(&current_match, current->con->window)) {
 238                     printf("matches window!\n");
 239                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 240                 } else {
 241                     printf("doesnt match\n");
 242                     free(current);
 243                 }
 244             }
 245         }
 246
 247         TAILQ_FOREACH(current, &owindows, owindows) {
 248             printf("matching: %p / %s\n", current->con, current->con->name);
 249         }
 250
 251     }
 252     ;
 253
 254 criteria:
 255     TOK_CLASS '=' STR
 256     {
 257         printf("criteria: class = %s\n", $<string>3);
 258         current_match.class = $<string>3;
 259     }
 260     | TOK_CON_ID '=' STR
 261     {
 262         printf("criteria: id = %s\n", $<string>3);
 263         /* TODO: correctly parse number */
 264         current_match.con_id = atoi($<string>3);
 265         printf("id as int = %d\n", current_match.con_id);
 266     }
 267     | TOK_ID '=' STR
 268     {
 269         printf("criteria: window id = %s\n", $<string>3);
 270         /* TODO: correctly parse number */
 271         current_match.id = atoi($<string>3);
 272         printf("window id as int = %d\n", current_match.id);
 273     }
 274     | TOK_MARK '=' STR
 275     {
 276         printf("criteria: mark = %s\n", $<string>3);
 277         current_match.mark = $<string>3;
 278     }
 279     ;
 280
 281 operations:
 282     operation
 283     | operation optwhitespace
 284     | operations ',' optwhitespace operation
 285     ;
 286
 287 operation:
 288     exec
 289     | exit
 290     | restart
 291     | reload
 292     | border
 293     | layout
 294     | restore
 295     | move
 296     | workspace
 297     | attach
 298     | focus
 299     | kill
 300     | open
 301     | fullscreen
 302     | next
 303     | prev
 304     | split
 305     | mode
 306     | level
 307     | mark
 308     | resize
 309     ;
 310
 311 exec:
 312     TOK_EXEC WHITESPACE STR
 313     {
 314         printf("should execute %s\n", $<string>3);
 315         start_application($<string>3);
 316     }
 317     ;
 318
 319 exit:
 320     TOK_EXIT
 321     {
 322         printf("exit, bye bye\n");
 323         exit(0);
 324     }
 325     ;
 326
 327 reload:
 328     TOK_RELOAD
 329     {
 330         printf("reloading\n");
 331         load_configuration(conn, NULL, true);
 332         /* Send an IPC event just in case the ws names have changed */
 333         ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
 334     }
 335     ;
 336
 337 restart:
 338     TOK_RESTART
 339     {
 340         printf("restarting i3\n");
 341         i3_restart();
 342     }
 343     ;
 344
 345 attach:
 346     TOK_ATTACH
 347     {
 348         printf("should attach\n");
 349     }
 350     ;
 351
 352 focus:
 353     TOK_FOCUS
 354     {
 355         owindow *current;
 356
 357         printf("should focus\n");
 358         if (match_is_empty(&current_match)) {
 359             /* TODO: better error message */
 360             LOG("Error: The foucs command requires you to use some criteria.\n");
 361             return;
 362         }
 363
 364         /* TODO: warning if the match contains more than one entry. does not
 365          * make so much sense when focusing */
 366         TAILQ_FOREACH(current, &owindows, owindows) {
 367             LOG("focusing %p / %s\n", current->con, current->con->name);
 368             con_focus(current->con);
 369         }
 370     }
 371     ;
 372
 373 kill:
 374     TOK_KILL
 375     {
 376         owindow *current;
 377
 378         printf("killing!\n");
 379         /* check if the match is empty, not if the result is empty */
 380         if (match_is_empty(&current_match))
 381             tree_close_con();
 382         else {
 383             TAILQ_FOREACH(current, &owindows, owindows) {
 384                 printf("matching: %p / %s\n", current->con, current->con->name);
 385                 tree_close(current->con, true);
 386             }
 387         }
 388
 389     }
 390     ;
 391
 392 workspace:
 393     TOK_WORKSPACE WHITESPACE STR
 394     {
 395         printf("should switch to workspace %s\n", $<string>3);
 396         workspace_show($<string>3);
 397         free($<string>3);
 398     }
 399     ;
 400
 401 open:
 402     TOK_OPEN
 403     {
 404         printf("opening new container\n");
 405         Con *con = tree_open_con(NULL);
 406         asprintf(&json_output, "{\"success\":true, \"id\":%d}", (long int)con);
 407     }
 408     ;
 409
 410 fullscreen:
 411     TOK_FULLSCREEN
 412     {
 413         printf("toggling fullscreen\n");
 414         owindow *current;
 415
 416         /* check if the match is empty, not if the result is empty */
 417         if (match_is_empty(&current_match))
 418             con_toggle_fullscreen(focused);
 419         else {
 420             TAILQ_FOREACH(current, &owindows, owindows) {
 421                 printf("matching: %p / %s\n", current->con, current->con->name);
 422                 con_toggle_fullscreen(current->con);
 423             }
 424         }
 425
 426     }
 427     ;
 428
 429 next:
 430     TOK_NEXT WHITESPACE direction
 431     {
 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));
 435     }
 436     ;
 437
 438 prev:
 439     TOK_PREV WHITESPACE direction
 440     {
 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));
 444     }
 445     ;
 446
 447 split:
 448     TOK_SPLIT WHITESPACE direction
 449     {
 450         /* TODO: use matches */
 451         printf("splitting in direction %c\n", $<chr>3);
 452         tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
 453     }
 454     ;
 455
 456 direction:
 457     TOK_HORIZONTAL  { $<chr>$ = 'h'; }
 458     | 'h'           { $<chr>$ = 'h'; }
 459     | TOK_VERTICAL  { $<chr>$ = 'v'; }
 460     | 'v'           { $<chr>$ = 'v'; }
 461     ;
 462
 463 mode:
 464     TOK_MODE WHITESPACE window_mode
 465     {
 466         if ($<number>3 == TOK_TOGGLE) {
 467             printf("should toggle mode\n");
 468             toggle_floating_mode(focused, false);
 469         } else {
 470             printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
 471             if ($<number>3 == TOK_FLOATING) {
 472                 floating_enable(focused, false);
 473             } else {
 474                 floating_disable(focused, false);
 475             }
 476         }
 477     }
 478     ;
 479
 480 window_mode:
 481     TOK_FLOATING    { $<number>$ = TOK_FLOATING; }
 482     | TOK_TILING    { $<number>$ = TOK_TILING; }
 483     | TOK_TOGGLE    { $<number>$ = TOK_TOGGLE; }
 484     ;
 485
 486 border:
 487     TOK_BORDER WHITESPACE border_style
 488     {
 489         printf("border style should be changed to %d\n", $<number>3);
 490         owindow *current;
 491
 492         /* check if the match is empty, not if the result is empty */
 493         if (match_is_empty(&current_match))
 494             focused->border_style = $<number>3;
 495         else {
 496             TAILQ_FOREACH(current, &owindows, owindows) {
 497                 printf("matching: %p / %s\n", current->con, current->con->name);
 498                 current->con->border_style = $<number>3;
 499             }
 500         }
 501     }
 502     ;
 503
 504 border_style:
 505     TOK_NORMAL      { $<number>$ = BS_NORMAL; }
 506     | TOK_NONE      { $<number>$ = BS_NONE; }
 507     | TOK_1PIXEL    { $<number>$ = BS_1PIXEL; }
 508     ;
 509
 510
 511 level:
 512     TOK_LEVEL WHITESPACE level_direction
 513     {
 514         printf("level %c\n", $<chr>3);
 515         if ($<chr>3 == 'u')
 516             level_up();
 517         else level_down();
 518     }
 519     ;
 520
 521 level_direction:
 522     TOK_UP     { $<chr>$ = 'u'; }
 523     | TOK_DOWN { $<chr>$ = 'd'; }
 524     ;
 525
 526 move:
 527     TOK_MOVE WHITESPACE before_after WHITESPACE direction
 528     {
 529         printf("moving: %s and %c\n", ($<number>3 == TOK_BEFORE ? "before" : "after"), $<chr>5);
 530         /* TODO: change API for the next call, we need to convert in both directions while ideally
 531          * we should not need any of both */
 532         tree_move(($<number>3 == TOK_BEFORE ? 'p' : 'n'), ($<chr>5 == 'v' ? VERT : HORIZ));
 533     }
 534     | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
 535     {
 536         owindow *current;
 537
 538         printf("should move window to workspace %s\n", $<string>5);
 539         /* get the workspace */
 540         Con *ws = workspace_get($<string>5);
 541
 542         /* check if the match is empty, not if the result is empty */
 543         if (match_is_empty(&current_match))
 544             con_move_to_workspace(focused, ws);
 545         else {
 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);
 549             }
 550         }
 551     }
 552     ;
 553
 554 before_after:
 555     TOK_BEFORE { $<number>$ = TOK_BEFORE; }
 556     | TOK_AFTER { $<number>$ = TOK_AFTER; }
 557     ;
 558
 559 restore:
 560     TOK_RESTORE WHITESPACE STR
 561     {
 562         printf("restoring \"%s\"\n", $<string>3);
 563         tree_append_json($<string>3);
 564     }
 565     ;
 566
 567 layout:
 568     TOK_LAYOUT WHITESPACE layout_mode
 569     {
 570         printf("changing layout to %d\n", $<number>3);
 571         owindow *current;
 572
 573         /* check if the match is empty, not if the result is empty */
 574         if (match_is_empty(&current_match))
 575             focused->parent->layout = $<number>3;
 576         else {
 577             TAILQ_FOREACH(current, &owindows, owindows) {
 578                 printf("matching: %p / %s\n", current->con, current->con->name);
 579                 current->con->layout = $<number>3;
 580             }
 581         }
 582
 583     }
 584     ;
 585
 586 layout_mode:
 587     TOK_DEFAULT   { $<number>$ = L_DEFAULT; }
 588     | TOK_STACKED { $<number>$ = L_STACKED; }
 589     | TOK_TABBED  { $<number>$ = L_TABBED; }
 590     ;
 591
 592 mark:
 593     TOK_MARK WHITESPACE STR
 594     {
 595         printf("marking window with str %s\n", $<string>3);
 596         owindow *current;
 597
 598         /* check if the match is empty, not if the result is empty */
 599         if (match_is_empty(&current_match))
 600             focused->mark = sstrdup($<string>3);
 601         else {
 602             TAILQ_FOREACH(current, &owindows, owindows) {
 603                 printf("matching: %p / %s\n", current->con, current->con->name);
 604                 current->con->mark = sstrdup($<string>3);
 605             }
 606         }
 607
 608         free($<string>3);
 609     }
 610     ;
 611
 612 resize:
 613     TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
 614     {
 615         /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
 616         printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
 617         int direction = $<number>5;
 618         int px = $<number>6;
 619         int ppt = $<number>7;
 620         if ($<number>3 == TOK_SHRINK) {
 621             px *= -1;
 622             ppt *= -1;
 623         }
 624
 625         if (con_is_floating(focused)) {
 626             printf("floating resize\n");
 627             if (direction == TOK_UP) {
 628                 focused->parent->rect.y -= px;
 629                 focused->parent->rect.height += px;
 630             } else if (direction == TOK_DOWN) {
 631                 focused->rect.height += px;
 632             } else if (direction == TOK_LEFT) {
 633                 focused->rect.x -= px;
 634                 focused->rect.width += px;
 635             } else {
 636                 focused->rect.width += px;
 637             }
 638         } else {
 639             LOG("tiling resize\n");
 640             /* get the default percentage */
 641             int children = 0;
 642             Con *other;
 643             TAILQ_FOREACH(other, &(focused->parent->nodes_head), nodes)
 644                 children++;
 645             LOG("ins. %d children\n", children);
 646             double percentage = 1.0 / children;
 647             LOG("default percentage = %f\n", percentage);
 648
 649             if (direction == TOK_UP || direction == TOK_LEFT) {
 650                 other = TAILQ_PREV(focused, nodes_head, nodes);
 651             } else {
 652                 other = TAILQ_NEXT(focused, nodes);
 653             }
 654             if (other == TAILQ_END(workspaces)) {
 655                 LOG("No other container in this direction found, cannot resize.\n");
 656                 return 0;
 657             }
 658             LOG("other->percent = %f\n", other->percent);
 659             LOG("focused->percent before = %f\n", focused->percent);
 660             if (focused->percent == 0.0)
 661                 focused->percent = percentage;
 662             if (other->percent == 0.0)
 663                 other->percent = percentage;
 664             focused->percent += ((double)ppt / 100.0);
 665             other->percent -= ((double)ppt / 100.0);
 666             LOG("focused->percent after = %f\n", focused->percent);
 667             LOG("other->percent after = %f\n", other->percent);
 668         }
 669     }
 670     ;
 671
 672 resize_px:
 673     /* empty */
 674     {
 675         $<number>$ = 10;
 676     }
 677     | WHITESPACE NUMBER WHITESPACE TOK_PX
 678     {
 679         $<number>$ = $<number>2;
 680     }
 681     ;
 682
 683 resize_tiling:
 684     /* empty */
 685     {
 686         $<number>$ = 10;
 687     }
 688     | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
 689     {
 690         $<number>$ = $<number>4;
 691     }
 692     ;
 693
 694 resize_way:
 695     TOK_GROW        { $<number>$ = TOK_GROW; }
 696     | TOK_SHRINK    { $<number>$ = TOK_SHRINK; }
 697     ;
 698
 699 direction:
 700     TOK_UP          { $<number>$ = TOK_UP; }
 701     | TOK_DOWN      { $<number>$ = TOK_DOWN; }
 702     | TOK_LEFT      { $<number>$ = TOK_LEFT; }
 703     | TOK_RIGHT     { $<number>$ = TOK_RIGHT; }
 704     ;