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 %token TOK_NOP "nop"
 148
 149 %token TOK_CLASS "class"
 150 %token TOK_ID "id"
 151 %token TOK_CON_ID "con_id"
 152
 153 %token WHITESPACE "<whitespace>"
 154 %token STR "<string>"
 155 %token NUMBER "<number>"
 156
 157 %%
 158
 159 commands: /* empty */
 160     | commands optwhitespace ';' optwhitespace command
 161     | command
 162     {
 163         owindow *current;
 164
 165         printf("single command completely parsed, dropping state...\n");
 166         while (!TAILQ_EMPTY(&owindows)) {
 167             current = TAILQ_FIRST(&owindows);
 168             TAILQ_REMOVE(&owindows, current, owindows);
 169             free(current);
 170         }
 171         match_init(&current_match);
 172     }
 173     ;
 174
 175 optwhitespace:
 176     | WHITESPACE
 177     ;
 178
 179 command:
 180     match optwhitespace operations
 181     ;
 182
 183 match:
 184     | matchstart optwhitespace criteria optwhitespace matchend
 185     {
 186         printf("match parsed\n");
 187     }
 188     ;
 189
 190 matchstart:
 191     '['
 192     {
 193         printf("start\n");
 194         match_init(&current_match);
 195         TAILQ_INIT(&owindows);
 196         /* copy all_cons */
 197         Con *con;
 198         TAILQ_FOREACH(con, &all_cons, all_cons) {
 199             owindow *ow = smalloc(sizeof(owindow));
 200             ow->con = con;
 201             TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 202         }
 203     }
 204     ;
 205
 206 matchend:
 207     ']'
 208     {
 209         owindow *next, *current;
 210
 211         printf("match specification finished, matching...\n");
 212         /* copy the old list head to iterate through it and start with a fresh
 213          * list which will contain only matching windows */
 214         struct owindows_head old = owindows;
 215         TAILQ_INIT(&owindows);
 216         for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 217             /* make a copy of the next pointer and advance the pointer to the
 218              * next element as we are going to invalidate the element’s
 219              * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 220             current = next;
 221             next = TAILQ_NEXT(next, owindows);
 222
 223             printf("checking if con %p / %s matches\n", current->con, current->con->name);
 224             if (current_match.con_id != NULL) {
 225                 if (current_match.con_id == current->con) {
 226                     printf("matches container!\n");
 227                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 228
 229                 }
 230             } else if (current_match.mark != NULL && current->con->mark != NULL &&
 231                     strcasecmp(current_match.mark, current->con->mark) == 0) {
 232                 printf("match by mark\n");
 233                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 234
 235             } else {
 236                 if (current->con->window == NULL)
 237                     continue;
 238                 if (match_matches_window(&current_match, current->con->window)) {
 239                     printf("matches window!\n");
 240                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 241                 } else {
 242                     printf("doesnt match\n");
 243                     free(current);
 244                 }
 245             }
 246         }
 247
 248         TAILQ_FOREACH(current, &owindows, owindows) {
 249             printf("matching: %p / %s\n", current->con, current->con->name);
 250         }
 251
 252     }
 253     ;
 254
 255 criteria:
 256     TOK_CLASS '=' STR
 257     {
 258         printf("criteria: class = %s\n", $<string>3);
 259         current_match.class = $<string>3;
 260     }
 261     | TOK_CON_ID '=' STR
 262     {
 263         printf("criteria: id = %s\n", $<string>3);
 264         /* TODO: correctly parse number */
 265         current_match.con_id = atoi($<string>3);
 266         printf("id as int = %d\n", current_match.con_id);
 267     }
 268     | TOK_ID '=' STR
 269     {
 270         printf("criteria: window id = %s\n", $<string>3);
 271         /* TODO: correctly parse number */
 272         current_match.id = atoi($<string>3);
 273         printf("window id as int = %d\n", current_match.id);
 274     }
 275     | TOK_MARK '=' STR
 276     {
 277         printf("criteria: mark = %s\n", $<string>3);
 278         current_match.mark = $<string>3;
 279     }
 280     ;
 281
 282 operations:
 283     operation
 284     | operation optwhitespace
 285     | operations ',' optwhitespace operation
 286     ;
 287
 288 operation:
 289     exec
 290     | exit
 291     | restart
 292     | reload
 293     | border
 294     | layout
 295     | restore
 296     | move
 297     | workspace
 298     | attach
 299     | focus
 300     | kill
 301     | open
 302     | fullscreen
 303     | next
 304     | prev
 305     | split
 306     | mode
 307     | level
 308     | mark
 309     | resize
 310     | nop
 311     ;
 312
 313 exec:
 314     TOK_EXEC WHITESPACE STR
 315     {
 316         printf("should execute %s\n", $<string>3);
 317         start_application($<string>3);
 318     }
 319     ;
 320
 321 exit:
 322     TOK_EXIT
 323     {
 324         printf("exit, bye bye\n");
 325         exit(0);
 326     }
 327     ;
 328
 329 reload:
 330     TOK_RELOAD
 331     {
 332         printf("reloading\n");
 333         load_configuration(conn, NULL, true);
 334         /* Send an IPC event just in case the ws names have changed */
 335         ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
 336     }
 337     ;
 338
 339 restart:
 340     TOK_RESTART
 341     {
 342         printf("restarting i3\n");
 343         i3_restart();
 344     }
 345     ;
 346
 347 attach:
 348     TOK_ATTACH
 349     {
 350         printf("should attach\n");
 351     }
 352     ;
 353
 354 focus:
 355     TOK_FOCUS
 356     {
 357         owindow *current;
 358
 359         printf("should focus\n");
 360         if (match_is_empty(&current_match)) {
 361             /* TODO: better error message */
 362             LOG("Error: The foucs command requires you to use some criteria.\n");
 363             return;
 364         }
 365
 366         /* TODO: warning if the match contains more than one entry. does not
 367          * make so much sense when focusing */
 368         TAILQ_FOREACH(current, &owindows, owindows) {
 369             LOG("focusing %p / %s\n", current->con, current->con->name);
 370             con_focus(current->con);
 371         }
 372     }
 373     ;
 374
 375 kill:
 376     TOK_KILL
 377     {
 378         owindow *current;
 379
 380         printf("killing!\n");
 381         /* check if the match is empty, not if the result is empty */
 382         if (match_is_empty(&current_match))
 383             tree_close_con();
 384         else {
 385             TAILQ_FOREACH(current, &owindows, owindows) {
 386                 printf("matching: %p / %s\n", current->con, current->con->name);
 387                 tree_close(current->con, true, false);
 388             }
 389         }
 390
 391     }
 392     ;
 393
 394 workspace:
 395     TOK_WORKSPACE WHITESPACE STR
 396     {
 397         printf("should switch to workspace %s\n", $<string>3);
 398         workspace_show($<string>3);
 399         free($<string>3);
 400     }
 401     ;
 402
 403 open:
 404     TOK_OPEN
 405     {
 406         printf("opening new container\n");
 407         Con *con = tree_open_con(NULL);
 408         asprintf(&json_output, "{\"success\":true, \"id\":%d}", (long int)con);
 409     }
 410     ;
 411
 412 fullscreen:
 413     TOK_FULLSCREEN
 414     {
 415         printf("toggling fullscreen\n");
 416         owindow *current;
 417
 418         /* check if the match is empty, not if the result is empty */
 419         if (match_is_empty(&current_match))
 420             con_toggle_fullscreen(focused);
 421         else {
 422             TAILQ_FOREACH(current, &owindows, owindows) {
 423                 printf("matching: %p / %s\n", current->con, current->con->name);
 424                 con_toggle_fullscreen(current->con);
 425             }
 426         }
 427
 428     }
 429     ;
 430
 431 next:
 432     TOK_NEXT WHITESPACE direction
 433     {
 434         /* TODO: use matches */
 435         printf("should select next window in direction %c\n", $<chr>3);
 436         tree_next('n', ($<chr>3 == 'v' ? VERT : HORIZ));
 437     }
 438     ;
 439
 440 prev:
 441     TOK_PREV WHITESPACE direction
 442     {
 443         /* TODO: use matches */
 444         printf("should select prev window in direction %c\n", $<chr>3);
 445         tree_next('p', ($<chr>3 == 'v' ? VERT : HORIZ));
 446     }
 447     ;
 448
 449 split:
 450     TOK_SPLIT WHITESPACE direction
 451     {
 452         /* TODO: use matches */
 453         printf("splitting in direction %c\n", $<chr>3);
 454         tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
 455     }
 456     ;
 457
 458 direction:
 459     TOK_HORIZONTAL  { $<chr>$ = 'h'; }
 460     | 'h'           { $<chr>$ = 'h'; }
 461     | TOK_VERTICAL  { $<chr>$ = 'v'; }
 462     | 'v'           { $<chr>$ = 'v'; }
 463     ;
 464
 465 mode:
 466     TOK_MODE WHITESPACE window_mode
 467     {
 468         if ($<number>3 == TOK_TOGGLE) {
 469             printf("should toggle mode\n");
 470             toggle_floating_mode(focused, false);
 471         } else {
 472             printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
 473             if ($<number>3 == TOK_FLOATING) {
 474                 floating_enable(focused, false);
 475             } else {
 476                 floating_disable(focused, false);
 477             }
 478         }
 479     }
 480     ;
 481
 482 window_mode:
 483     TOK_FLOATING    { $<number>$ = TOK_FLOATING; }
 484     | TOK_TILING    { $<number>$ = TOK_TILING; }
 485     | TOK_TOGGLE    { $<number>$ = TOK_TOGGLE; }
 486     ;
 487
 488 border:
 489     TOK_BORDER WHITESPACE border_style
 490     {
 491         printf("border style should be changed to %d\n", $<number>3);
 492         owindow *current;
 493
 494         /* check if the match is empty, not if the result is empty */
 495         if (match_is_empty(&current_match))
 496             focused->border_style = $<number>3;
 497         else {
 498             TAILQ_FOREACH(current, &owindows, owindows) {
 499                 printf("matching: %p / %s\n", current->con, current->con->name);
 500                 current->con->border_style = $<number>3;
 501             }
 502         }
 503     }
 504     ;
 505
 506 border_style:
 507     TOK_NORMAL      { $<number>$ = BS_NORMAL; }
 508     | TOK_NONE      { $<number>$ = BS_NONE; }
 509     | TOK_1PIXEL    { $<number>$ = BS_1PIXEL; }
 510     ;
 511
 512
 513 level:
 514     TOK_LEVEL WHITESPACE level_direction
 515     {
 516         printf("level %c\n", $<chr>3);
 517         if ($<chr>3 == 'u')
 518             level_up();
 519         else level_down();
 520     }
 521     ;
 522
 523 level_direction:
 524     TOK_UP     { $<chr>$ = 'u'; }
 525     | TOK_DOWN { $<chr>$ = 'd'; }
 526     ;
 527
 528 move:
 529     TOK_MOVE WHITESPACE before_after WHITESPACE direction
 530     {
 531         printf("moving: %s and %c\n", ($<number>3 == TOK_BEFORE ? "before" : "after"), $<chr>5);
 532         /* TODO: change API for the next call, we need to convert in both directions while ideally
 533          * we should not need any of both */
 534         tree_move(($<number>3 == TOK_BEFORE ? 'p' : 'n'), ($<chr>5 == 'v' ? VERT : HORIZ));
 535     }
 536     | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
 537     {
 538         owindow *current;
 539
 540         printf("should move window to workspace %s\n", $<string>5);
 541         /* get the workspace */
 542         Con *ws = workspace_get($<string>5);
 543
 544         /* check if the match is empty, not if the result is empty */
 545         if (match_is_empty(&current_match))
 546             con_move_to_workspace(focused, ws);
 547         else {
 548             TAILQ_FOREACH(current, &owindows, owindows) {
 549                 printf("matching: %p / %s\n", current->con, current->con->name);
 550                 con_move_to_workspace(current->con, ws);
 551             }
 552         }
 553     }
 554     ;
 555
 556 before_after:
 557     TOK_BEFORE { $<number>$ = TOK_BEFORE; }
 558     | TOK_AFTER { $<number>$ = TOK_AFTER; }
 559     ;
 560
 561 restore:
 562     TOK_RESTORE WHITESPACE STR
 563     {
 564         printf("restoring \"%s\"\n", $<string>3);
 565         tree_append_json($<string>3);
 566     }
 567     ;
 568
 569 layout:
 570     TOK_LAYOUT WHITESPACE layout_mode
 571     {
 572         printf("changing layout to %d\n", $<number>3);
 573         owindow *current;
 574
 575         /* check if the match is empty, not if the result is empty */
 576         if (match_is_empty(&current_match))
 577             con_set_layout(focused->parent, $<number>3);
 578         else {
 579             TAILQ_FOREACH(current, &owindows, owindows) {
 580                 printf("matching: %p / %s\n", current->con, current->con->name);
 581                 con_set_layout(current->con, $<number>3);
 582             }
 583         }
 584
 585     }
 586     ;
 587
 588 layout_mode:
 589     TOK_DEFAULT   { $<number>$ = L_DEFAULT; }
 590     | TOK_STACKED { $<number>$ = L_STACKED; }
 591     | TOK_TABBED  { $<number>$ = L_TABBED; }
 592     ;
 593
 594 mark:
 595     TOK_MARK WHITESPACE STR
 596     {
 597         printf("marking window with str %s\n", $<string>3);
 598         owindow *current;
 599
 600         /* check if the match is empty, not if the result is empty */
 601         if (match_is_empty(&current_match))
 602             focused->mark = sstrdup($<string>3);
 603         else {
 604             TAILQ_FOREACH(current, &owindows, owindows) {
 605                 printf("matching: %p / %s\n", current->con, current->con->name);
 606                 current->con->mark = sstrdup($<string>3);
 607             }
 608         }
 609
 610         free($<string>3);
 611     }
 612     ;
 613
 614 nop:
 615     TOK_NOP WHITESPACE STR
 616     {
 617         printf("-------------------------------------------------\n");
 618         printf("  NOP: %s\n", $<string>3);
 619         printf("-------------------------------------------------\n");
 620         free($<string>3);
 621     }
 622     ;
 623
 624 resize:
 625     TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
 626     {
 627         /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
 628         printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
 629         int direction = $<number>5;
 630         int px = $<number>6;
 631         int ppt = $<number>7;
 632         if ($<number>3 == TOK_SHRINK) {
 633             px *= -1;
 634             ppt *= -1;
 635         }
 636
 637         if (con_is_floating(focused)) {
 638             printf("floating resize\n");
 639             if (direction == TOK_UP) {
 640                 focused->parent->rect.y -= px;
 641                 focused->parent->rect.height += px;
 642             } else if (direction == TOK_DOWN) {
 643                 focused->rect.height += px;
 644             } else if (direction == TOK_LEFT) {
 645                 focused->rect.x -= px;
 646                 focused->rect.width += px;
 647             } else {
 648                 focused->rect.width += px;
 649             }
 650         } else {
 651             LOG("tiling resize\n");
 652             /* get the default percentage */
 653             int children = con_num_children(focused->parent);
 654             Con *other;
 655             LOG("ins. %d children\n", children);
 656             double percentage = 1.0 / children;
 657             LOG("default percentage = %f\n", percentage);
 658
 659             if (direction == TOK_UP || direction == TOK_LEFT) {
 660                 other = TAILQ_PREV(focused, nodes_head, nodes);
 661             } else {
 662                 other = TAILQ_NEXT(focused, nodes);
 663             }
 664             if (other == TAILQ_END(workspaces)) {
 665                 LOG("No other container in this direction found, cannot resize.\n");
 666                 return 0;
 667             }
 668             LOG("other->percent = %f\n", other->percent);
 669             LOG("focused->percent before = %f\n", focused->percent);
 670             if (focused->percent == 0.0)
 671                 focused->percent = percentage;
 672             if (other->percent == 0.0)
 673                 other->percent = percentage;
 674             focused->percent += ((double)ppt / 100.0);
 675             other->percent -= ((double)ppt / 100.0);
 676             LOG("focused->percent after = %f\n", focused->percent);
 677             LOG("other->percent after = %f\n", other->percent);
 678         }
 679     }
 680     ;
 681
 682 resize_px:
 683     /* empty */
 684     {
 685         $<number>$ = 10;
 686     }
 687     | WHITESPACE NUMBER WHITESPACE TOK_PX
 688     {
 689         $<number>$ = $<number>2;
 690     }
 691     ;
 692
 693 resize_tiling:
 694     /* empty */
 695     {
 696         $<number>$ = 10;
 697     }
 698     | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
 699     {
 700         $<number>$ = $<number>4;
 701     }
 702     ;
 703
 704 resize_way:
 705     TOK_GROW        { $<number>$ = TOK_GROW; }
 706     | TOK_SHRINK    { $<number>$ = TOK_SHRINK; }
 707     ;
 708
 709 direction:
 710     TOK_UP          { $<number>$ = TOK_UP; }
 711     | TOK_DOWN      { $<number>$ = TOK_DOWN; }
 712     | TOK_LEFT      { $<number>$ = TOK_LEFT; }
 713     | TOK_RIGHT     { $<number>$ = TOK_RIGHT; }
 714     ;