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 context *context;
  26 static Match current_match;
  27
  28 /*
  29  * Helper data structure for an operation window (window on which the operation
  30  * will be performed). Used to build the TAILQ owindows.
  31  *
  32  */
  33 typedef struct owindow {
  34     Con *con;
  35     TAILQ_ENTRY(owindow) owindows;
  36 } owindow;
  37 static TAILQ_HEAD(owindows_head, owindow) owindows;
  38
  39 /* Holds the JSON which will be returned via IPC or NULL for the default return
  40  * message */
  41 static char *json_output;
  42
  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. */
  46 //int cmdyydebug = 1;
  47
  48 void cmdyyerror(const char *error_message) {
  49     ELOG("\n");
  50     ELOG("CMD: %s\n", error_message);
  51     ELOG("CMD: in command:\n");
  52     ELOG("CMD:   %s\n", context->line_copy);
  53     ELOG("CMD:   ");
  54     for (int c = 1; c <= context->last_column; c++)
  55         if (c >= context->first_column)
  56                 printf("^");
  57         else printf(" ");
  58     printf("\n");
  59     ELOG("\n");
  60     context->compact_error = sstrdup(error_message);
  61 }
  62
  63 int cmdyywrap() {
  64     return 1;
  65 }
  66
  67 char *parse_cmd(const char *new) {
  68     cmdyy_scan_string(new);
  69
  70     match_init(&current_match);
  71     context = scalloc(sizeof(struct context));
  72     context->filename = "cmd";
  73     FREE(json_output);
  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);
  80         free(context);
  81         return json_output;
  82     }
  83     printf("done, json output = %s\n", json_output);
  84
  85     FREE(context->line_copy);
  86     FREE(context->compact_error);
  87     free(context);
  88     return json_output;
  89 }
  90
  91 %}
  92
  93 %error-verbose
  94 %lex-param { struct context *context }
  95
  96 %union {
  97     char *string;
  98     char chr;
  99     int number;
 100 }
 101
 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"
 132 %token TOK_UP "up"
 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"
 141 %token TOK_PX "px"
 142 %token TOK_OR "or"
 143 %token TOK_PPT "ppt"
 144 %token TOK_NOP "nop"
 145
 146 %token TOK_CLASS "class"
 147 %token TOK_ID "id"
 148 %token TOK_CON_ID "con_id"
 149
 150 %token WHITESPACE "<whitespace>"
 151 %token STR "<string>"
 152 %token NUMBER "<number>"
 153
 154 %%
 155
 156 commands: /* empty */
 157     | commands optwhitespace ';' optwhitespace command
 158     | command
 159     {
 160         owindow *current;
 161
 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);
 166             free(current);
 167         }
 168         match_init(&current_match);
 169     }
 170     ;
 171
 172 optwhitespace:
 173     | WHITESPACE
 174     ;
 175
 176 command:
 177     match optwhitespace operations
 178     ;
 179
 180 match:
 181     | matchstart optwhitespace criteria optwhitespace matchend
 182     {
 183         printf("match parsed\n");
 184     }
 185     ;
 186
 187 matchstart:
 188     '['
 189     {
 190         printf("start\n");
 191         match_init(&current_match);
 192         TAILQ_INIT(&owindows);
 193         /* copy all_cons */
 194         Con *con;
 195         TAILQ_FOREACH(con, &all_cons, all_cons) {
 196             owindow *ow = smalloc(sizeof(owindow));
 197             ow->con = con;
 198             TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 199         }
 200     }
 201     ;
 202
 203 matchend:
 204     ']'
 205     {
 206         owindow *next, *current;
 207
 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 */
 217             current = next;
 218             next = TAILQ_NEXT(next, owindows);
 219
 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);
 225
 226                 }
 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);
 231
 232             } else {
 233                 if (current->con->window == NULL)
 234                     continue;
 235                 if (match_matches_window(&current_match, current->con->window)) {
 236                     printf("matches window!\n");
 237                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 238                 } else {
 239                     printf("doesnt match\n");
 240                     free(current);
 241                 }
 242             }
 243         }
 244
 245         TAILQ_FOREACH(current, &owindows, owindows) {
 246             printf("matching: %p / %s\n", current->con, current->con->name);
 247         }
 248
 249     }
 250     ;
 251
 252 criteria:
 253     TOK_CLASS '=' STR
 254     {
 255         printf("criteria: class = %s\n", $<string>3);
 256         current_match.class = $<string>3;
 257     }
 258     | TOK_CON_ID '=' STR
 259     {
 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);
 264     }
 265     | TOK_ID '=' STR
 266     {
 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);
 271     }
 272     | TOK_MARK '=' STR
 273     {
 274         printf("criteria: mark = %s\n", $<string>3);
 275         current_match.mark = $<string>3;
 276     }
 277     ;
 278
 279 operations:
 280     operation
 281     | operation optwhitespace
 282     | operations ',' optwhitespace operation
 283     ;
 284
 285 operation:
 286     exec
 287     | exit
 288     | restart
 289     | reload
 290     | border
 291     | layout
 292     | restore
 293     | move
 294     | workspace
 295     | attach
 296     | focus
 297     | kill
 298     | open
 299     | fullscreen
 300     | next
 301     | prev
 302     | split
 303     | mode
 304     | level
 305     | mark
 306     | resize
 307     | nop
 308     ;
 309
 310 exec:
 311     TOK_EXEC WHITESPACE STR
 312     {
 313         printf("should execute %s\n", $<string>3);
 314         start_application($<string>3);
 315         free($<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(false);
 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 focus command requires you to use some criteria.\n");
 361             break;
 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, false);
 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         con_focus(con);
 407         asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
 408     }
 409     ;
 410
 411 fullscreen:
 412     TOK_FULLSCREEN
 413     {
 414         printf("toggling fullscreen\n");
 415         owindow *current;
 416
 417         /* check if the match is empty, not if the result is empty */
 418         if (match_is_empty(&current_match))
 419             con_toggle_fullscreen(focused);
 420         else {
 421             TAILQ_FOREACH(current, &owindows, owindows) {
 422                 printf("matching: %p / %s\n", current->con, current->con->name);
 423                 con_toggle_fullscreen(current->con);
 424             }
 425         }
 426
 427     }
 428     ;
 429
 430 next:
 431     TOK_NEXT WHITESPACE direction
 432     {
 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));
 436     }
 437     ;
 438
 439 prev:
 440     TOK_PREV WHITESPACE direction
 441     {
 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));
 445     }
 446     ;
 447
 448 split:
 449     TOK_SPLIT WHITESPACE direction
 450     {
 451         /* TODO: use matches */
 452         printf("splitting in direction %c\n", $<chr>3);
 453         tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
 454     }
 455     ;
 456
 457 direction:
 458     TOK_HORIZONTAL  { $<chr>$ = 'h'; }
 459     | 'h'           { $<chr>$ = 'h'; }
 460     | TOK_VERTICAL  { $<chr>$ = 'v'; }
 461     | 'v'           { $<chr>$ = 'v'; }
 462     ;
 463
 464 mode:
 465     TOK_MODE WHITESPACE window_mode
 466     {
 467         if ($<number>3 == TOK_TOGGLE) {
 468             printf("should toggle mode\n");
 469             toggle_floating_mode(focused, false);
 470         } else {
 471             printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
 472             if ($<number>3 == TOK_FLOATING) {
 473                 floating_enable(focused, false);
 474             } else {
 475                 floating_disable(focused, false);
 476             }
 477         }
 478     }
 479     ;
 480
 481 window_mode:
 482     TOK_FLOATING    { $<number>$ = TOK_FLOATING; }
 483     | TOK_TILING    { $<number>$ = TOK_TILING; }
 484     | TOK_TOGGLE    { $<number>$ = TOK_TOGGLE; }
 485     ;
 486
 487 border:
 488     TOK_BORDER WHITESPACE border_style
 489     {
 490         printf("border style should be changed to %d\n", $<number>3);
 491         owindow *current;
 492
 493         /* check if the match is empty, not if the result is empty */
 494         if (match_is_empty(&current_match))
 495             focused->border_style = $<number>3;
 496         else {
 497             TAILQ_FOREACH(current, &owindows, owindows) {
 498                 printf("matching: %p / %s\n", current->con, current->con->name);
 499                 current->con->border_style = $<number>3;
 500             }
 501         }
 502     }
 503     ;
 504
 505 border_style:
 506     TOK_NORMAL      { $<number>$ = BS_NORMAL; }
 507     | TOK_NONE      { $<number>$ = BS_NONE; }
 508     | TOK_1PIXEL    { $<number>$ = BS_1PIXEL; }
 509     ;
 510
 511
 512 level:
 513     TOK_LEVEL WHITESPACE level_direction
 514     {
 515         printf("level %c\n", $<chr>3);
 516         if ($<chr>3 == 'u')
 517             level_up();
 518         else level_down();
 519     }
 520     ;
 521
 522 level_direction:
 523     TOK_UP     { $<chr>$ = 'u'; }
 524     | TOK_DOWN { $<chr>$ = 'd'; }
 525     ;
 526
 527 move:
 528     TOK_MOVE WHITESPACE direction
 529     {
 530         printf("moving in direction %d\n", $<number>3);
 531         tree_move($<number>3);
 532     }
 533     | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
 534     {
 535         owindow *current;
 536
 537         printf("should move window to workspace %s\n", $<string>5);
 538         /* get the workspace */
 539         Con *ws = workspace_get($<string>5, NULL);
 540         free($<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 restore:
 555     TOK_RESTORE WHITESPACE STR
 556     {
 557         printf("restoring \"%s\"\n", $<string>3);
 558         tree_append_json($<string>3);
 559         free($<string>3);
 560     }
 561     ;
 562
 563 layout:
 564     TOK_LAYOUT WHITESPACE layout_mode
 565     {
 566         printf("changing layout to %d\n", $<number>3);
 567         owindow *current;
 568
 569         /* check if the match is empty, not if the result is empty */
 570         if (match_is_empty(&current_match))
 571             con_set_layout(focused->parent, $<number>3);
 572         else {
 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);
 576             }
 577         }
 578
 579     }
 580     ;
 581
 582 layout_mode:
 583     TOK_DEFAULT   { $<number>$ = L_DEFAULT; }
 584     | TOK_STACKED { $<number>$ = L_STACKED; }
 585     | TOK_TABBED  { $<number>$ = L_TABBED; }
 586     ;
 587
 588 mark:
 589     TOK_MARK WHITESPACE STR
 590     {
 591         printf("marking window with str %s\n", $<string>3);
 592         owindow *current;
 593
 594         /* check if the match is empty, not if the result is empty */
 595         if (match_is_empty(&current_match))
 596             focused->mark = sstrdup($<string>3);
 597         else {
 598             TAILQ_FOREACH(current, &owindows, owindows) {
 599                 printf("matching: %p / %s\n", current->con, current->con->name);
 600                 current->con->mark = sstrdup($<string>3);
 601             }
 602         }
 603
 604         free($<string>3);
 605     }
 606     ;
 607
 608 nop:
 609     TOK_NOP WHITESPACE STR
 610     {
 611         printf("-------------------------------------------------\n");
 612         printf("  NOP: %s\n", $<string>3);
 613         printf("-------------------------------------------------\n");
 614         free($<string>3);
 615     }
 616     ;
 617
 618 resize:
 619     TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
 620     {
 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;
 624         int px = $<number>6;
 625         int ppt = $<number>7;
 626         if ($<number>3 == TOK_SHRINK) {
 627             px *= -1;
 628             ppt *= -1;
 629         }
 630
 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;
 641             } else {
 642                 focused->rect.width += px;
 643             }
 644         } else {
 645             LOG("tiling resize\n");
 646             /* get the default percentage */
 647             int children = con_num_children(focused->parent);
 648             Con *other;
 649             LOG("ins. %d children\n", children);
 650             double percentage = 1.0 / children;
 651             LOG("default percentage = %f\n", percentage);
 652
 653             if (direction == TOK_UP || direction == TOK_LEFT) {
 654                 other = TAILQ_PREV(focused, nodes_head, nodes);
 655             } else {
 656                 other = TAILQ_NEXT(focused, nodes);
 657             }
 658             if (other == TAILQ_END(workspaces)) {
 659                 LOG("No other container in this direction found, cannot resize.\n");
 660                 return 0;
 661             }
 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);
 672         }
 673     }
 674     ;
 675
 676 resize_px:
 677     /* empty */
 678     {
 679         $<number>$ = 10;
 680     }
 681     | WHITESPACE NUMBER WHITESPACE TOK_PX
 682     {
 683         $<number>$ = $<number>2;
 684     }
 685     ;
 686
 687 resize_tiling:
 688     /* empty */
 689     {
 690         $<number>$ = 10;
 691     }
 692     | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
 693     {
 694         $<number>$ = $<number>4;
 695     }
 696     ;
 697
 698 resize_way:
 699     TOK_GROW        { $<number>$ = TOK_GROW; }
 700     | TOK_SHRINK    { $<number>$ = TOK_SHRINK; }
 701     ;
 702
 703 direction:
 704     TOK_UP          { $<number>$ = TOK_UP; }
 705     | TOK_DOWN      { $<number>$ = TOK_DOWN; }
 706     | TOK_LEFT      { $<number>$ = TOK_LEFT; }
 707     | TOK_RIGHT     { $<number>$ = TOK_RIGHT; }
 708     ;