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

   1 %{
   2 /*
   3  * vim:ts=8:expandtab
   4  *
   5  */
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8 #include <unistd.h>
   9 #include <fcntl.h>
  10
  11 #include "all.h"
  12
  13 typedef struct yy_buffer_state *YY_BUFFER_STATE;
  14 extern int yylex(struct context *context);
  15 extern int yyparse(void);
  16 extern FILE *yyin;
  17 YY_BUFFER_STATE yy_scan_string(const char *);
  18
  19 static struct bindings_head *current_bindings;
  20 static struct context *context;
  21
  22 /* We don’t need yydebug for now, as we got decent error messages using
  23  * yyerror(). Should you ever want to extend the parser, it might be handy
  24  * to just comment it in again, so it stays here. */
  25 //int yydebug = 1;
  26
  27 void yyerror(const char *error_message) {
  28         ELOG("\n");
  29         ELOG("CONFIG: %s\n", error_message);
  30         ELOG("CONFIG: in file \"%s\", line %d:\n",
  31                 context->filename, context->line_number);
  32         ELOG("CONFIG:   %s\n", context->line_copy);
  33         ELOG("CONFIG:   ");
  34         for (int c = 1; c <= context->last_column; c++)
  35                 if (c >= context->first_column)
  36                         printf("^");
  37                 else printf(" ");
  38         printf("\n");
  39         ELOG("\n");
  40 }
  41
  42 int yywrap() {
  43         return 1;
  44 }
  45
  46 void parse_file(const char *f) {
  47         SLIST_HEAD(variables_head, Variable) variables = SLIST_HEAD_INITIALIZER(&variables);
  48         int fd, ret, read_bytes = 0;
  49         struct stat stbuf;
  50         char *buf;
  51         FILE *fstr;
  52         char buffer[1026], key[512], value[512];
  53
  54         if ((fd = open(f, O_RDONLY)) == -1)
  55                 die("Could not open configuration file: %s\n", strerror(errno));
  56
  57         if (fstat(fd, &stbuf) == -1)
  58                 die("Could not fstat file: %s\n", strerror(errno));
  59
  60         buf = scalloc((stbuf.st_size + 1) * sizeof(char));
  61         while (read_bytes < stbuf.st_size) {
  62                 if ((ret = read(fd, buf + read_bytes, (stbuf.st_size - read_bytes))) < 0)
  63                         die("Could not read(): %s\n", strerror(errno));
  64                 read_bytes += ret;
  65         }
  66
  67         if (lseek(fd, 0, SEEK_SET) == (off_t)-1)
  68                 die("Could not lseek: %s\n", strerror(errno));
  69
  70         if ((fstr = fdopen(fd, "r")) == NULL)
  71                 die("Could not fdopen: %s\n", strerror(errno));
  72
  73         while (!feof(fstr)) {
  74                 if (fgets(buffer, 1024, fstr) == NULL) {
  75                         if (feof(fstr))
  76                                 break;
  77                         die("Could not read configuration file\n");
  78                 }
  79
  80                 /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
  81                 if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
  82                     key[0] == '#' || strlen(key) < 3)
  83                         continue;
  84
  85                 if (strcasecmp(key, "set") == 0) {
  86                         if (value[0] != '$')
  87                                 die("Malformed variable assignment, name has to start with $\n");
  88
  89                         /* get key/value for this variable */
  90                         char *v_key = value, *v_value;
  91                         if ((v_value = strstr(value, " ")) == NULL)
  92                                 die("Malformed variable assignment, need a value\n");
  93
  94                         *(v_value++) = '\0';
  95
  96                         struct Variable *new = scalloc(sizeof(struct Variable));
  97                         new->key = sstrdup(v_key);
  98                         new->value = sstrdup(v_value);
  99                         SLIST_INSERT_HEAD(&variables, new, variables);
 100                         DLOG("Got new variable %s = %s\n", v_key, v_value);
 101                         continue;
 102                 }
 103         }
 104         fclose(fstr);
 105
 106         /* For every custom variable, see how often it occurs in the file and
 107          * how much extra bytes it requires when replaced. */
 108         struct Variable *current, *nearest;
 109         int extra_bytes = 0;
 110         /* We need to copy the buffer because we need to invalidate the
 111          * variables (otherwise we will count them twice, which is bad when
 112          * 'extra' is negative) */
 113         char *bufcopy = sstrdup(buf);
 114         SLIST_FOREACH(current, &variables, variables) {
 115                 int extra = (strlen(current->value) - strlen(current->key));
 116                 char *next;
 117                 for (next = bufcopy;
 118                      (next = strcasestr(bufcopy + (next - bufcopy), current->key)) != NULL;
 119                      next += strlen(current->key)) {
 120                         *next = '_';
 121                         extra_bytes += extra;
 122                 }
 123         }
 124         FREE(bufcopy);
 125
 126         /* Then, allocate a new buffer and copy the file over to the new one,
 127          * but replace occurences of our variables */
 128         char *walk = buf, *destwalk;
 129         char *new = smalloc((stbuf.st_size + extra_bytes + 1) * sizeof(char));
 130         destwalk = new;
 131         while (walk < (buf + stbuf.st_size)) {
 132                 /* Find the next variable */
 133                 SLIST_FOREACH(current, &variables, variables)
 134                         current->next_match = strcasestr(walk, current->key);
 135                 nearest = NULL;
 136                 int distance = stbuf.st_size;
 137                 SLIST_FOREACH(current, &variables, variables) {
 138                         if (current->next_match == NULL)
 139                                 continue;
 140                         if ((current->next_match - walk) < distance) {
 141                                 distance = (current->next_match - walk);
 142                                 nearest = current;
 143                         }
 144                 }
 145                 if (nearest == NULL) {
 146                         /* If there are no more variables, we just copy the rest */
 147                         strncpy(destwalk, walk, (buf + stbuf.st_size) - walk);
 148                         destwalk += (buf + stbuf.st_size) - walk;
 149                         *destwalk = '\0';
 150                         break;
 151                 } else {
 152                         /* Copy until the next variable, then copy its value */
 153                         strncpy(destwalk, walk, distance);
 154                         strncpy(destwalk + distance, nearest->value, strlen(nearest->value));
 155                         walk += distance + strlen(nearest->key);
 156                         destwalk += distance + strlen(nearest->value);
 157                 }
 158         }
 159
 160         yy_scan_string(new);
 161
 162         context = scalloc(sizeof(struct context));
 163         context->filename = f;
 164
 165         if (yyparse() != 0) {
 166                 fprintf(stderr, "Could not parse configfile\n");
 167                 exit(1);
 168         }
 169
 170         FREE(context->line_copy);
 171         free(context);
 172         free(new);
 173         free(buf);
 174
 175         while (!SLIST_EMPTY(&variables)) {
 176                 current = SLIST_FIRST(&variables);
 177                 FREE(current->key);
 178                 FREE(current->value);
 179                 SLIST_REMOVE_HEAD(&variables, variables);
 180                 FREE(current);
 181         }
 182 }
 183
 184 %}
 185
 186 %expect 1
 187 %error-verbose
 188 %lex-param { struct context *context }
 189
 190 %union {
 191         int number;
 192         char *string;
 193         uint32_t *single_color;
 194         struct Colortriple *color;
 195         struct Assignment *assignment;
 196         struct Binding *binding;
 197 }
 198
 199 %token <number>NUMBER "<number>"
 200 %token <string>WORD "<word>"
 201 %token <string>STR "<string>"
 202 %token <string>STR_NG "<string (non-greedy)>"
 203 %token <string>HEX "<hex>"
 204 %token <string>OUTPUT "<RandR output>"
 205 %token TOKBIND
 206 %token TOKTERMINAL
 207 %token TOKCOMMENT "<comment>"
 208 %token TOKFONT "font"
 209 %token TOKBINDSYM "bindsym"
 210 %token MODIFIER "<modifier>"
 211 %token TOKCONTROL "control"
 212 %token TOKSHIFT "shift"
 213 %token WHITESPACE "<whitespace>"
 214 %token TOKFLOATING_MODIFIER "floating_modifier"
 215 %token QUOTEDSTRING "<quoted string>"
 216 %token TOKWORKSPACE "workspace"
 217 %token TOKOUTPUT "output"
 218 %token TOKASSIGN "assign"
 219 %token TOKSET
 220 %token TOKIPCSOCKET "ipc_socket"
 221 %token TOKRESTARTSTATE "restart_state"
 222 %token TOKEXEC "exec"
 223 %token TOKSINGLECOLOR
 224 %token TOKCOLOR
 225 %token TOKARROW "→"
 226 %token TOKMODE "mode"
 227 %token TOK_ORIENTATION "new_container_orientation"
 228 %token TOK_HORIZ "horizontal"
 229 %token TOK_VERT "vertical"
 230 %token TOK_AUTO "auto"
 231 %token TOKNEWCONTAINER "new_container"
 232 %token TOKNEWWINDOW "new_window"
 233 %token TOK_NORMAL "normal"
 234 %token TOK_NONE "none"
 235 %token TOK_1PIXEL "1pixel"
 236 %token TOKFOCUSFOLLOWSMOUSE "focus_follows_mouse"
 237 %token TOKWORKSPACEBAR "workspace_bar"
 238 %token TOKCONTAINERMODE "default/stacking/tabbed"
 239 %token TOKSTACKLIMIT "stack-limit"
 240 %token TOK_POPUP_DURING_FULLSCREEN "popup_during_fullscreen"
 241 %token TOK_IGNORE "ignore"
 242 %token TOK_LEAVE_FULLSCREEN "leave_fullscreen"
 243
 244 %%
 245
 246 lines: /* empty */
 247         | lines WHITESPACE line
 248         | lines error
 249         | lines line
 250         ;
 251
 252 line:
 253         bindline
 254         | mode
 255         | floating_modifier
 256         | orientation
 257         | new_container
 258         | new_window
 259         | focus_follows_mouse
 260         | workspace_bar
 261         | workspace
 262         | assign
 263         | ipcsocket
 264         | restart_state
 265         | exec
 266         | single_color
 267         | color
 268         | terminal
 269         | font
 270         | comment
 271         | popup_during_fullscreen
 272         ;
 273
 274 comment:
 275         TOKCOMMENT
 276         ;
 277
 278 command:
 279         STR
 280         ;
 281
 282 bindline:
 283         binding
 284         {
 285                 TAILQ_INSERT_TAIL(bindings, $<binding>1, bindings);
 286         }
 287         ;
 288
 289 binding:
 290         TOKBIND WHITESPACE bind                 { $<binding>$ = $<binding>3; }
 291         | TOKBINDSYM WHITESPACE bindsym         { $<binding>$ = $<binding>3; }
 292         ;
 293
 294 bind:
 295         binding_modifiers NUMBER WHITESPACE command
 296         {
 297                 printf("\tFound binding mod%d with key %d and command %s\n", $<number>1, $2, $<string>4);
 298                 Binding *new = scalloc(sizeof(Binding));
 299
 300                 new->keycode = $<number>2;
 301                 new->mods = $<number>1;
 302                 new->command = $<string>4;
 303
 304                 $<binding>$ = new;
 305         }
 306         ;
 307
 308 bindsym:
 309         binding_modifiers word_or_number WHITESPACE command
 310         {
 311                 printf("\tFound symbolic mod%d with key %s and command %s\n", $<number>1, $<string>2, $<string>4);
 312                 Binding *new = scalloc(sizeof(Binding));
 313
 314                 new->symbol = $<string>2;
 315                 new->mods = $<number>1;
 316                 new->command = $<string>4;
 317
 318                 $<binding>$ = new;
 319         }
 320         ;
 321
 322 word_or_number:
 323         WORD
 324         | NUMBER
 325         {
 326                 asprintf(&$<string>$, "%d", $1);
 327         }
 328         ;
 329
 330 mode:
 331         TOKMODE WHITESPACE QUOTEDSTRING WHITESPACE '{' modelines '}'
 332         {
 333                 if (strcasecmp($<string>3, "default") == 0) {
 334                         printf("You cannot use the name \"default\" for your mode\n");
 335                         exit(1);
 336                 }
 337                 printf("\t now in mode %s\n", $<string>3);
 338                 printf("\t current bindings = %p\n", current_bindings);
 339                 Binding *binding;
 340                 TAILQ_FOREACH(binding, current_bindings, bindings) {
 341                         printf("got binding on mods %d, keycode %d, symbol %s, command %s\n",
 342                                         binding->mods, binding->keycode, binding->symbol, binding->command);
 343                 }
 344
 345                 struct Mode *mode = scalloc(sizeof(struct Mode));
 346                 mode->name = $<string>3;
 347                 mode->bindings = current_bindings;
 348                 current_bindings = NULL;
 349                 SLIST_INSERT_HEAD(&modes, mode, modes);
 350         }
 351         ;
 352
 353
 354 modelines:
 355         /* empty */
 356         | modelines modeline
 357         ;
 358
 359 modeline:
 360         WHITESPACE
 361         | comment
 362         | binding
 363         {
 364                 if (current_bindings == NULL) {
 365                         current_bindings = scalloc(sizeof(struct bindings_head));
 366                         TAILQ_INIT(current_bindings);
 367                 }
 368
 369                 TAILQ_INSERT_TAIL(current_bindings, $<binding>1, bindings);
 370         }
 371         ;
 372
 373 floating_modifier:
 374         TOKFLOATING_MODIFIER WHITESPACE binding_modifiers
 375         {
 376                 DLOG("floating modifier = %d\n", $<number>3);
 377                 config.floating_modifier = $<number>3;
 378         }
 379         ;
 380
 381 orientation:
 382         TOK_ORIENTATION WHITESPACE direction
 383         {
 384                 DLOG("New containers should start with split direction %d\n", $<number>3);
 385                 config.default_orientation = $<number>3;
 386         }
 387         ;
 388
 389 direction:
 390         TOK_HORIZ       { $<number>$ = HORIZ; }
 391         | TOK_VERT      { $<number>$ = VERT; }
 392         | TOK_AUTO      { $<number>$ = NO_ORIENTATION; }
 393         ;
 394
 395 new_container:
 396         TOKNEWCONTAINER WHITESPACE TOKCONTAINERMODE
 397         {
 398                 DLOG("new containers will be in mode %d\n", $<number>3);
 399                 config.container_mode = $<number>3;
 400
 401 #if 0
 402                 /* We also need to change the layout of the already existing
 403                  * workspaces here. Workspaces may exist at this point because
 404                  * of the other directives which are modifying workspaces
 405                  * (setting the preferred screen or name). While the workspace
 406                  * objects are already created, they have never been used.
 407                  * Thus, the user very likely awaits the default container mode
 408                  * to trigger in this case, regardless of where it is inside
 409                  * his configuration file. */
 410                 Workspace *ws;
 411                 TAILQ_FOREACH(ws, workspaces, workspaces) {
 412                         if (ws->table == NULL)
 413                                 continue;
 414                         switch_layout_mode(global_conn,
 415                                            ws->table[0][0],
 416                                            config.container_mode);
 417                 }
 418 #endif
 419         }
 420         | TOKNEWCONTAINER WHITESPACE TOKSTACKLIMIT WHITESPACE TOKSTACKLIMIT WHITESPACE NUMBER
 421         {
 422                 DLOG("stack-limit %d with val %d\n", $<number>5, $<number>7);
 423                 config.container_stack_limit = $<number>5;
 424                 config.container_stack_limit_value = $<number>7;
 425
 426 #if 0
 427                 /* See the comment above */
 428                 Workspace *ws;
 429                 TAILQ_FOREACH(ws, workspaces, workspaces) {
 430                         if (ws->table == NULL)
 431                                 continue;
 432                         Container *con = ws->table[0][0];
 433                         con->stack_limit = config.container_stack_limit;
 434                         con->stack_limit_value = config.container_stack_limit_value;
 435                 }
 436 #endif
 437         }
 438         ;
 439
 440 new_window:
 441         TOKNEWWINDOW WHITESPACE border_style
 442         {
 443                 DLOG("new windows should start with border style %d\n", $<number>3);
 444                 config.default_border = $<number>3;
 445         }
 446         ;
 447
 448 border_style:
 449         TOK_NORMAL      { $<number>$ = BS_NORMAL; }
 450         | TOK_NONE      { $<number>$ = BS_NONE; }
 451         | TOK_1PIXEL    { $<number>$ = BS_1PIXEL; }
 452         ;
 453
 454 bool:
 455         NUMBER
 456         {
 457                 $<number>$ = ($<number>1 == 1);
 458         }
 459         | WORD
 460         {
 461                 DLOG("checking word \"%s\"\n", $<string>1);
 462                 $<number>$ = (strcasecmp($<string>1, "yes") == 0 ||
 463                               strcasecmp($<string>1, "true") == 0 ||
 464                               strcasecmp($<string>1, "on") == 0 ||
 465                               strcasecmp($<string>1, "enable") == 0 ||
 466                               strcasecmp($<string>1, "active") == 0);
 467         }
 468         ;
 469
 470 focus_follows_mouse:
 471         TOKFOCUSFOLLOWSMOUSE WHITESPACE bool
 472         {
 473                 DLOG("focus follows mouse = %d\n", $<number>3);
 474                 config.disable_focus_follows_mouse = !($<number>3);
 475         }
 476         ;
 477
 478 workspace_bar:
 479         TOKWORKSPACEBAR WHITESPACE bool
 480         {
 481                 DLOG("workspace bar = %d\n", $<number>3);
 482                 config.disable_workspace_bar = !($<number>3);
 483         }
 484         ;
 485
 486 workspace:
 487         TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKOUTPUT WHITESPACE OUTPUT optional_workspace_name
 488         {
 489                 int ws_num = $<number>3;
 490                 if (ws_num < 1) {
 491                         DLOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
 492                 } else {
 493 #if 0
 494                         Workspace *ws = workspace_get(ws_num - 1);
 495                         ws->preferred_output = $<string>7;
 496                         if ($<string>8 != NULL) {
 497                                 workspace_set_name(ws, $<string>8);
 498                                 free($<string>8);
 499                         }
 500 #endif
 501                 }
 502         }
 503         | TOKWORKSPACE WHITESPACE NUMBER WHITESPACE workspace_name
 504         {
 505                 int ws_num = $<number>3;
 506                 if (ws_num < 1) {
 507                         DLOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
 508                 } else {
 509                         DLOG("workspace name to: %s\n", $<string>5);
 510 #if 0
 511                         if ($<string>5 != NULL) {
 512                                 workspace_set_name(workspace_get(ws_num - 1), $<string>5);
 513                                 free($<string>5);
 514                         }
 515 #endif
 516                 }
 517         }
 518         ;
 519
 520 optional_workspace_name:
 521         /* empty */                     { $<string>$ = NULL; }
 522         | WHITESPACE workspace_name     { $<string>$ = $<string>2; }
 523         ;
 524
 525 workspace_name:
 526         QUOTEDSTRING         { $<string>$ = $<string>1; }
 527         | STR                { $<string>$ = $<string>1; }
 528         | WORD               { $<string>$ = $<string>1; }
 529         ;
 530
 531 assign:
 532         TOKASSIGN WHITESPACE window_class WHITESPACE optional_arrow assign_target
 533         {
 534 #if 0
 535                 printf("assignment of %s\n", $<string>3);
 536
 537                 struct Assignment *new = $<assignment>6;
 538                 printf("  to %d\n", new->workspace);
 539                 printf("  floating = %d\n", new->floating);
 540                 new->windowclass_title = $<string>3;
 541                 TAILQ_INSERT_TAIL(&assignments, new, assignments);
 542 #endif
 543         }
 544         ;
 545
 546 assign_target:
 547         NUMBER
 548         {
 549 #if 0
 550                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 551                 new->workspace = $<number>1;
 552                 new->floating = ASSIGN_FLOATING_NO;
 553                 $<assignment>$ = new;
 554 #endif
 555         }
 556         | '~'
 557         {
 558 #if 0
 559                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 560                 new->floating = ASSIGN_FLOATING_ONLY;
 561                 $<assignment>$ = new;
 562 #endif
 563         }
 564         | '~' NUMBER
 565         {
 566 #if 0
 567                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 568                 new->workspace = $<number>2;
 569                 new->floating = ASSIGN_FLOATING;
 570                 $<assignment>$ = new;
 571 #endif
 572         }
 573         ;
 574
 575 window_class:
 576         QUOTEDSTRING
 577         | STR_NG
 578         ;
 579
 580 optional_arrow:
 581         /* NULL */
 582         | TOKARROW WHITESPACE
 583         ;
 584
 585 ipcsocket:
 586         TOKIPCSOCKET WHITESPACE STR
 587         {
 588                 config.ipc_socket_path = $<string>3;
 589         }
 590         ;
 591
 592 restart_state:
 593         TOKRESTARTSTATE WHITESPACE STR
 594         {
 595                 config.restart_state_path = $<string>3;
 596         }
 597         ;
 598
 599 exec:
 600         TOKEXEC WHITESPACE STR
 601         {
 602                 struct Autostart *new = smalloc(sizeof(struct Autostart));
 603                 new->command = $<string>3;
 604                 TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
 605         }
 606         ;
 607
 608 terminal:
 609         TOKTERMINAL WHITESPACE STR
 610         {
 611                 ELOG("The terminal option is DEPRECATED and has no effect. "
 612                     "Please remove it from your configuration file.\n");
 613         }
 614         ;
 615
 616 font:
 617         TOKFONT WHITESPACE STR
 618         {
 619                 config.font = load_font($<string>3, true);
 620                 printf("font %s\n", $<string>3);
 621         }
 622         ;
 623
 624 single_color:
 625         TOKSINGLECOLOR WHITESPACE colorpixel
 626         {
 627                 uint32_t *dest = $<single_color>1;
 628                 *dest = $<number>3;
 629         }
 630         ;
 631
 632 color:
 633         TOKCOLOR WHITESPACE colorpixel WHITESPACE colorpixel WHITESPACE colorpixel
 634         {
 635                 struct Colortriple *dest = $<color>1;
 636
 637                 dest->border = $<number>3;
 638                 dest->background = $<number>5;
 639                 dest->text = $<number>7;
 640         }
 641         ;
 642
 643 colorpixel:
 644         '#' HEX
 645         {
 646                 char *hex;
 647                 if (asprintf(&hex, "#%s", $<string>2) == -1)
 648                         die("asprintf()");
 649                 $<number>$ = get_colorpixel(hex);
 650                 free(hex);
 651         }
 652         ;
 653
 654
 655 binding_modifiers:
 656         /* NULL */                               { $<number>$ = 0; }
 657         | binding_modifier
 658         | binding_modifiers '+' binding_modifier { $<number>$ = $<number>1 | $<number>3; }
 659         | binding_modifiers '+'                  { $<number>$ = $<number>1; }
 660         ;
 661
 662 binding_modifier:
 663         MODIFIER        { $<number>$ = $<number>1; }
 664         | TOKCONTROL    { $<number>$ = BIND_CONTROL; }
 665         | TOKSHIFT      { $<number>$ = BIND_SHIFT; }
 666         ;
 667
 668 popup_during_fullscreen:
 669         TOK_POPUP_DURING_FULLSCREEN WHITESPACE popup_setting
 670         {
 671                 DLOG("popup_during_fullscreen setting: %d\n", $<number>3);
 672                 config.popup_during_fullscreen = $<number>3;
 673         }
 674         ;
 675
 676 popup_setting:
 677         TOK_IGNORE              { $<number>$ = PDF_IGNORE; }
 678         | TOK_LEAVE_FULLSCREEN  { $<number>$ = PDF_LEAVE_FULLSCREEN; }
 679         ;