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 file \"%s\", line %d:\n",
  53             context->filename, context->line_number);
  54     ELOG("CMD:   %s\n", context->line_copy);
  55     ELOG("CMD:   ");
  56     for (int c = 1; c <= context->last_column; c++)
  57         if (c >= context->first_column)
  58                 printf("^");
  59         else printf(" ");
  60     printf("\n");
  61     ELOG("\n");
  62 }
  63
  64 int cmdyywrap() {
  65     return 1;
  66 }
  67
  68 char *parse_cmd(const char *new) {
  69
  70     //const char *new = "[level-up workspace] attach $output, focus";
  71
  72     cmdyy_scan_string(new);
  73
  74     context = scalloc(sizeof(struct context));
  75     context->filename = "cmd";
  76     FREE(json_output);
  77     if (cmdyyparse() != 0) {
  78             fprintf(stderr, "Could not parse configfile\n");
  79             exit(1);
  80     }
  81     printf("done, json output = %s\n", json_output);
  82
  83     FREE(context->line_copy);
  84     free(context);
  85     return json_output;
  86 }
  87
  88 %}
  89
  90 %error-verbose
  91 %lex-param { struct context *context }
  92
  93 %union {
  94     char *string;
  95     char chr;
  96     int number;
  97 }
  98
  99 %token TOK_ATTACH "attach"
 100 %token TOK_EXEC "exec"
 101 %token TOK_EXIT "exit"
 102 %token TOK_RELOAD "reload"
 103 %token TOK_RESTART "restart"
 104 %token TOK_KILL "kill"
 105 %token TOK_FULLSCREEN "fullscreen"
 106 %token TOK_GLOBAL "global"
 107 %token TOK_LAYOUT "layout"
 108 %token TOK_DEFAULT "default"
 109 %token TOK_STACKED "stacked"
 110 %token TOK_TABBED "tabbed"
 111 %token TOK_BORDER "border"
 112 %token TOK_NONE "none"
 113 %token TOK_1PIXEL "1pixel"
 114 %token TOK_MODE "mode"
 115 %token TOK_TILING "tiling"
 116 %token TOK_FLOATING "floating"
 117 %token TOK_WORKSPACE "workspace"
 118 %token TOK_TOGGLE "toggle"
 119 %token TOK_FOCUS "focus"
 120 %token TOK_MOVE "move"
 121 %token TOK_OPEN "open"
 122 %token TOK_NEXT "next"
 123 %token TOK_PREV "prev"
 124 %token TOK_SPLIT "split"
 125 %token TOK_HORIZONTAL "horizontal"
 126 %token TOK_VERTICAL "vertical"
 127 %token TOK_LEVEL "level"
 128 %token TOK_UP "up"
 129 %token TOK_DOWN "down"
 130 %token TOK_LEFT "left"
 131 %token TOK_RIGHT "right"
 132 %token TOK_AFTER "after"
 133 %token TOK_BEFORE "before"
 134 %token TOK_RESTORE "restore"
 135 %token TOK_MARK "mark"
 136 %token TOK_RESIZE "resize"
 137 %token TOK_GROW "grow"
 138 %token TOK_SHRINK "shrink"
 139 %token TOK_PX "px"
 140 %token TOK_OR "or"
 141 %token TOK_PPT "ppt"
 142
 143 %token TOK_CLASS "class"
 144 %token TOK_ID "id"
 145 %token TOK_CON_ID "con_id"
 146
 147 %token WHITESPACE "<whitespace>"
 148 %token STR "<string>"
 149 %token NUMBER "<number>"
 150
 151 %%
 152
 153 commands: /* empty */
 154     | commands optwhitespace ';' optwhitespace command
 155     | command
 156     {
 157         owindow *current;
 158
 159         printf("single command completely parsed, dropping state...\n");
 160         while (!TAILQ_EMPTY(&owindows)) {
 161             current = TAILQ_FIRST(&owindows);
 162             TAILQ_REMOVE(&owindows, current, owindows);
 163             free(current);
 164         }
 165         memset(&current_match, 0, sizeof(Match));
 166     }
 167     ;
 168
 169 optwhitespace:
 170     | WHITESPACE
 171     ;
 172
 173 command:
 174     match optwhitespace operations
 175     ;
 176
 177 match:
 178     | matchstart optwhitespace criteria optwhitespace matchend
 179     {
 180         printf("match parsed\n");
 181     }
 182     ;
 183
 184 matchstart:
 185     '['
 186     {
 187         printf("start\n");
 188         memset(&current_match, '\0', sizeof(Match));
 189         TAILQ_INIT(&owindows);
 190         /* copy all_cons */
 191         Con *con;
 192         TAILQ_FOREACH(con, &all_cons, all_cons) {
 193             owindow *ow = smalloc(sizeof(owindow));
 194             ow->con = con;
 195             TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 196         }
 197     }
 198     ;
 199
 200 matchend:
 201     ']'
 202     {
 203         owindow *next, *current;
 204
 205         printf("match specification finished, matching...\n");
 206         /* copy the old list head to iterate through it and start with a fresh
 207          * list which will contain only matching windows */
 208         struct owindows_head old = owindows;
 209         TAILQ_INIT(&owindows);
 210         for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 211             /* make a copy of the next pointer and advance the pointer to the
 212              * next element as we are going to invalidate the element’s
 213              * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 214             current = next;
 215             next = TAILQ_NEXT(next, owindows);
 216
 217             printf("checking if con %p / %s matches\n", current->con, current->con->name);
 218             if (current_match.con_id != NULL) {
 219                 if (current_match.con_id == current->con) {
 220                     printf("matches container!\n");
 221                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 222
 223                 }
 224             } else if (current_match.mark != NULL && current->con->mark != NULL &&
 225                     strcasecmp(current_match.mark, current->con->mark) == 0) {
 226                 printf("match by mark\n");
 227                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 228
 229             } else {
 230                 if (current->con->window == NULL)
 231                     continue;
 232                 if (match_matches_window(&current_match, current->con->window)) {
 233                     printf("matches window!\n");
 234                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 235                 } else {
 236                     printf("doesnt match\n");
 237                     free(current);
 238                 }
 239             }
 240         }
 241
 242         TAILQ_FOREACH(current, &owindows, owindows) {
 243             printf("matching: %p / %s\n", current->con, current->con->name);
 244         }
 245
 246     }
 247     ;
 248
 249 criteria:
 250     TOK_CLASS '=' STR
 251     {
 252         printf("criteria: class = %s\n", $<string>3);
 253         current_match.class = $<string>3;
 254     }
 255     | TOK_CON_ID '=' STR
 256     {
 257         printf("criteria: id = %s\n", $<string>3);
 258         /* TODO: correctly parse number */
 259         current_match.con_id = atoi($<string>3);
 260         printf("id as int = %d\n", current_match.con_id);
 261     }
 262     | TOK_ID '=' STR
 263     {
 264         printf("criteria: window id = %s\n", $<string>3);
 265         /* TODO: correctly parse number */
 266         current_match.id = atoi($<string>3);
 267         printf("window id as int = %d\n", current_match.id);
 268     }
 269     | TOK_MARK '=' STR
 270     {
 271         printf("criteria: mark = %s\n", $<string>3);
 272         current_match.mark = $<string>3;
 273     }
 274     ;
 275
 276 operations:
 277     operation
 278     | operation optwhitespace
 279     | operations ',' optwhitespace operation
 280     ;
 281
 282 operation:
 283     exec
 284     | exit
 285     | restart
 286     | reload
 287     /*
 288     | border */
 289     | layout
 290     | restore
 291     | move
 292     | workspace
 293     | attach
 294     | focus
 295     | kill
 296     | open
 297     | fullscreen
 298     | next
 299     | prev
 300     | split
 301     | mode
 302     | level
 303     | mark
 304     | resize
 305     ;
 306
 307 exec:
 308     TOK_EXEC WHITESPACE STR
 309     {
 310         printf("should execute %s\n", $<string>3);
 311         start_application($<string>3);
 312     }
 313     ;
 314
 315 exit:
 316     TOK_EXIT
 317     {
 318         printf("exit, bye bye\n");
 319         exit(0);
 320     }
 321     ;
 322
 323 reload:
 324     TOK_RELOAD
 325     {
 326         printf("reloading\n");
 327         load_configuration(conn, NULL, true);
 328         /* Send an IPC event just in case the ws names have changed */
 329         ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
 330     }
 331     ;
 332
 333 restart:
 334     TOK_RESTART
 335     {
 336         printf("restarting i3\n");
 337         i3_restart();
 338     }
 339     ;
 340
 341 attach:
 342     TOK_ATTACH
 343     {
 344         printf("should attach\n");
 345     }
 346     ;
 347
 348 focus:
 349     TOK_FOCUS
 350     {
 351         owindow *current;
 352
 353         printf("should focus\n");
 354         if (match_is_empty(&current_match)) {
 355             /* TODO: better error message */
 356             LOG("Error: The foucs command requires you to use some criteria.\n");
 357             return;
 358         }
 359
 360         /* TODO: warning if the match contains more than one entry. does not
 361          * make so much sense when focusing */
 362         TAILQ_FOREACH(current, &owindows, owindows) {
 363             LOG("focusing %p / %s\n", current->con, current->con->name);
 364             con_focus(current->con);
 365         }
 366     }
 367     ;
 368
 369 kill:
 370     TOK_KILL
 371     {
 372         owindow *current;
 373
 374         printf("killing!\n");
 375         /* check if the match is empty, not if the result is empty */
 376         if (match_is_empty(&current_match))
 377             tree_close_con();
 378         else {
 379             TAILQ_FOREACH(current, &owindows, owindows) {
 380                 printf("matching: %p / %s\n", current->con, current->con->name);
 381                 tree_close(current->con, true);
 382             }
 383         }
 384
 385     }
 386     ;
 387
 388 workspace:
 389     TOK_WORKSPACE WHITESPACE STR
 390     {
 391         printf("should switch to workspace %s\n", $<string>3);
 392         workspace_show($<string>3);
 393         free($<string>3);
 394     }
 395     ;
 396
 397 open:
 398     TOK_OPEN
 399     {
 400         printf("opening new container\n");
 401         Con *con = tree_open_con(NULL);
 402         asprintf(&json_output, "{\"success\":true, \"id\":%d}", (long int)con);
 403     }
 404     ;
 405
 406 fullscreen:
 407     TOK_FULLSCREEN
 408     {
 409         printf("toggling fullscreen\n");
 410         owindow *current;
 411
 412         /* check if the match is empty, not if the result is empty */
 413         if (match_is_empty(&current_match))
 414             con_toggle_fullscreen(focused);
 415         else {
 416             TAILQ_FOREACH(current, &owindows, owindows) {
 417                 printf("matching: %p / %s\n", current->con, current->con->name);
 418                 con_toggle_fullscreen(current->con);
 419             }
 420         }
 421
 422     }
 423     ;
 424
 425 next:
 426     TOK_NEXT WHITESPACE direction
 427     {
 428         /* TODO: use matches */
 429         printf("should select next window in direction %c\n", $<chr>3);
 430         tree_next('n', ($<chr>3 == 'v' ? VERT : HORIZ));
 431     }
 432     ;
 433
 434 prev:
 435     TOK_PREV WHITESPACE direction
 436     {
 437         /* TODO: use matches */
 438         printf("should select prev window in direction %c\n", $<chr>3);
 439         tree_next('p', ($<chr>3 == 'v' ? VERT : HORIZ));
 440     }
 441     ;
 442
 443 split:
 444     TOK_SPLIT WHITESPACE direction
 445     {
 446         /* TODO: use matches */
 447         printf("splitting in direction %c\n", $<chr>3);
 448         tree_split(focused, ($<chr>3 == 'v' ? VERT : HORIZ));
 449     }
 450     ;
 451
 452 direction:
 453     TOK_HORIZONTAL  { $<chr>$ = 'h'; }
 454     | 'h'           { $<chr>$ = 'h'; }
 455     | TOK_VERTICAL  { $<chr>$ = 'v'; }
 456     | 'v'           { $<chr>$ = 'v'; }
 457     ;
 458
 459 mode:
 460     TOK_MODE WHITESPACE window_mode
 461     {
 462         if ($<number>3 == TOK_TOGGLE) {
 463             printf("should toggle mode\n");
 464             toggle_floating_mode(focused, false);
 465         } else {
 466             printf("should switch mode to %s\n", ($<number>3 == TOK_FLOATING ? "floating" : "tiling"));
 467             if ($<number>3 == TOK_FLOATING) {
 468                 floating_enable(focused, false);
 469             } else {
 470                 floating_disable(focused, false);
 471             }
 472         }
 473     }
 474     ;
 475
 476 window_mode:
 477     TOK_FLOATING    { $<number>$ = TOK_FLOATING; }
 478     | TOK_TILING    { $<number>$ = TOK_TILING; }
 479     | TOK_TOGGLE    { $<number>$ = TOK_TOGGLE; }
 480     ;
 481
 482 level:
 483     TOK_LEVEL WHITESPACE level_direction
 484     {
 485         printf("level %c\n", $<chr>3);
 486         if ($<chr>3 == 'u')
 487             level_up();
 488         else level_down();
 489     }
 490     ;
 491
 492 level_direction:
 493     TOK_UP     { $<chr>$ = 'u'; }
 494     | TOK_DOWN { $<chr>$ = 'd'; }
 495     ;
 496
 497 move:
 498     TOK_MOVE WHITESPACE before_after WHITESPACE direction
 499     {
 500         printf("moving: %s and %c\n", ($<number>3 == TOK_BEFORE ? "before" : "after"), $<chr>5);
 501         /* TODO: change API for the next call, we need to convert in both directions while ideally
 502          * we should not need any of both */
 503         tree_move(($<number>3 == TOK_BEFORE ? 'p' : 'n'), ($<chr>5 == 'v' ? VERT : HORIZ));
 504     }
 505     | TOK_MOVE WHITESPACE TOK_WORKSPACE WHITESPACE STR
 506     {
 507         owindow *current;
 508
 509         printf("should move window to workspace %s\n", $<string>5);
 510         /* get the workspace */
 511         Con *ws = workspace_get($<string>5);
 512
 513         /* check if the match is empty, not if the result is empty */
 514         if (match_is_empty(&current_match))
 515             con_move_to_workspace(focused, ws);
 516         else {
 517             TAILQ_FOREACH(current, &owindows, owindows) {
 518                 printf("matching: %p / %s\n", current->con, current->con->name);
 519                 con_move_to_workspace(current->con, ws);
 520             }
 521         }
 522     }
 523     ;
 524
 525 before_after:
 526     TOK_BEFORE { $<number>$ = TOK_BEFORE; }
 527     | TOK_AFTER { $<number>$ = TOK_AFTER; }
 528     ;
 529
 530 restore:
 531     TOK_RESTORE WHITESPACE STR
 532     {
 533         printf("restoring \"%s\"\n", $<string>3);
 534         tree_append_json($<string>3);
 535     }
 536     ;
 537
 538 layout:
 539     TOK_LAYOUT WHITESPACE layout_mode
 540     {
 541         printf("changing layout to %d\n", $<number>3);
 542         owindow *current;
 543
 544         /* check if the match is empty, not if the result is empty */
 545         if (match_is_empty(&current_match))
 546             focused->parent->layout = $<number>3;
 547         else {
 548             TAILQ_FOREACH(current, &owindows, owindows) {
 549                 printf("matching: %p / %s\n", current->con, current->con->name);
 550                 current->con->layout = $<number>3;
 551             }
 552         }
 553
 554     }
 555     ;
 556
 557 layout_mode:
 558     TOK_DEFAULT   { $<number>$ = L_DEFAULT; }
 559     | TOK_STACKED { $<number>$ = L_STACKED; }
 560     | TOK_TABBED  { $<number>$ = L_TABBED; }
 561     ;
 562
 563 mark:
 564     TOK_MARK WHITESPACE STR
 565     {
 566         printf("marking window with str %s\n", $<string>3);
 567         owindow *current;
 568
 569         /* check if the match is empty, not if the result is empty */
 570         if (match_is_empty(&current_match))
 571             focused->mark = sstrdup($<string>3);
 572         else {
 573             TAILQ_FOREACH(current, &owindows, owindows) {
 574                 printf("matching: %p / %s\n", current->con, current->con->name);
 575                 current->con->mark = sstrdup($<string>3);
 576             }
 577         }
 578
 579         free($<string>3);
 580     }
 581     ;
 582
 583 resize:
 584     TOK_RESIZE WHITESPACE resize_way WHITESPACE direction resize_px resize_tiling
 585     {
 586         /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
 587         printf("resizing in way %d, direction %d, px %d or ppt %d\n", $<number>3, $<number>5, $<number>6, $<number>7);
 588         int direction = $<number>5;
 589         int px = $<number>6;
 590         int ppt = $<number>7;
 591         if ($<number>3 == TOK_SHRINK) {
 592             px *= -1;
 593             ppt *= -1;
 594         }
 595
 596         if (con_is_floating(focused)) {
 597             printf("floating resize\n");
 598             if (direction == TOK_UP) {
 599                 focused->parent->rect.y -= px;
 600                 focused->parent->rect.height += px;
 601             } else if (direction == TOK_DOWN) {
 602                 focused->rect.height += px;
 603             } else if (direction == TOK_LEFT) {
 604                 focused->rect.x -= px;
 605                 focused->rect.width += px;
 606             } else {
 607                 focused->rect.width += px;
 608             }
 609         } else {
 610             LOG("tiling resize\n");
 611             /* get the default percentage */
 612             int children = 0;
 613             Con *other;
 614             TAILQ_FOREACH(other, &(focused->parent->nodes_head), nodes)
 615                 children++;
 616             LOG("ins. %d children\n", children);
 617             double percentage = 1.0 / children;
 618             LOG("default percentage = %f\n", percentage);
 619
 620             if (direction == TOK_UP || direction == TOK_LEFT) {
 621                 other = TAILQ_PREV(focused, nodes_head, nodes);
 622             } else {
 623                 other = TAILQ_NEXT(focused, nodes);
 624             }
 625             if (other == TAILQ_END(workspaces)) {
 626                 LOG("No other container in this direction found, cannot resize.\n");
 627                 return 0;
 628             }
 629             LOG("other->percent = %f\n", other->percent);
 630             LOG("focused->percent before = %f\n", focused->percent);
 631             if (focused->percent == 0.0)
 632                 focused->percent = percentage;
 633             if (other->percent == 0.0)
 634                 other->percent = percentage;
 635             focused->percent += ((double)ppt / 100.0);
 636             other->percent -= ((double)ppt / 100.0);
 637             LOG("focused->percent after = %f\n", focused->percent);
 638             LOG("other->percent after = %f\n", other->percent);
 639         }
 640     }
 641     ;
 642
 643 resize_px:
 644     /* empty */
 645     {
 646         $<number>$ = 10;
 647     }
 648     | WHITESPACE NUMBER WHITESPACE TOK_PX
 649     {
 650         $<number>$ = $<number>2;
 651     }
 652     ;
 653
 654 resize_tiling:
 655     /* empty */
 656     {
 657         $<number>$ = 10;
 658     }
 659     | WHITESPACE TOK_OR WHITESPACE NUMBER WHITESPACE TOK_PPT
 660     {
 661         $<number>$ = $<number>4;
 662     }
 663     ;
 664
 665 resize_way:
 666     TOK_GROW        { $<number>$ = TOK_GROW; }
 667     | TOK_SHRINK    { $<number>$ = TOK_SHRINK; }
 668     ;
 669
 670 direction:
 671     TOK_UP          { $<number>$ = TOK_UP; }
 672     | TOK_DOWN      { $<number>$ = TOK_DOWN; }
 673     | TOK_LEFT      { $<number>$ = TOK_LEFT; }
 674     | TOK_RIGHT     { $<number>$ = TOK_RIGHT; }
 675     ;