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

   1 %{
   2 /*
   3  * vim:ts=8:expandtab
   4  *
   5  */
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <xcb/xcb.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11 #include <unistd.h>
  12 #include <fcntl.h>
  13 #include <stdlib.h>
  14 #include <errno.h>
  15
  16 #include "data.h"
  17 #include "config.h"
  18 #include "i3.h"
  19 #include "util.h"
  20 #include "queue.h"
  21 #include "table.h"
  22 #include "workspace.h"
  23 #include "xcb.h"
  24
  25
  26 typedef struct yy_buffer_state *YY_BUFFER_STATE;
  27 extern int yylex(void);
  28 extern int yyparse(void);
  29 extern FILE *yyin;
  30 YY_BUFFER_STATE yy_scan_string(const char *);
  31
  32 static struct bindings_head *current_bindings;
  33
  34 int yydebug = 1;
  35
  36 void yyerror(const char *str) {
  37         fprintf(stderr,"error: %s\n",str);
  38 }
  39
  40 int yywrap() {
  41         return 1;
  42 }
  43
  44 void parse_file(const char *f) {
  45         SLIST_HEAD(variables_head, Variable) variables = SLIST_HEAD_INITIALIZER(&variables);
  46         int fd, ret, read_bytes = 0;
  47         struct stat stbuf;
  48         char *buf;
  49         FILE *fstr;
  50         char buffer[1026], key[512], value[512];
  51
  52         if ((fd = open(f, O_RDONLY)) == -1)
  53                 die("Could not open configuration file: %s\n", strerror(errno));
  54
  55         if (fstat(fd, &stbuf) == -1)
  56                 die("Could not fstat file: %s\n", strerror(errno));
  57
  58         buf = smalloc(stbuf.st_size * sizeof(char));
  59         while (read_bytes < stbuf.st_size) {
  60                 if ((ret = read(fd, buf + read_bytes, (stbuf.st_size - read_bytes))) < 0)
  61                         die("Could not read(): %s\n", strerror(errno));
  62                 read_bytes += ret;
  63         }
  64
  65         if (lseek(fd, 0, SEEK_SET) == (off_t)-1)
  66                 die("Could not lseek: %s\n", strerror(errno));
  67
  68         if ((fstr = fdopen(fd, "r")) == NULL)
  69                 die("Could not fdopen: %s\n", strerror(errno));
  70
  71         while (!feof(fstr)) {
  72                 if (fgets(buffer, 1024, fstr) == NULL) {
  73                         if (feof(fstr))
  74                                 break;
  75                         die("Could not read configuration file\n");
  76                 }
  77
  78                 /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
  79                 if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
  80                     key[0] == '#' || strlen(key) < 3)
  81                         continue;
  82
  83                 if (strcasecmp(key, "set") == 0) {
  84                         if (value[0] != '$')
  85                                 die("Malformed variable assignment, name has to start with $\n");
  86
  87                         /* get key/value for this variable */
  88                         char *v_key = value, *v_value;
  89                         if ((v_value = strstr(value, " ")) == NULL)
  90                                 die("Malformed variable assignment, need a value\n");
  91
  92                         *(v_value++) = '\0';
  93
  94                         struct Variable *new = scalloc(sizeof(struct Variable));
  95                         new->key = sstrdup(v_key);
  96                         new->value = sstrdup(v_value);
  97                         SLIST_INSERT_HEAD(&variables, new, variables);
  98                         LOG("Got new variable %s = %s\n", v_key, v_value);
  99                         continue;
 100                 }
 101         }
 102
 103         /* For every custom variable, see how often it occurs in the file and
 104          * how much extra bytes it requires when replaced. */
 105         struct Variable *current, *nearest;
 106         int extra_bytes = 0;
 107         SLIST_FOREACH(current, &variables, variables) {
 108                 int extra = (strlen(current->value) - strlen(current->key));
 109                 char *next;
 110                 for (next = buf;
 111                      (next = strcasestr(buf + (next - buf), current->key)) != NULL;
 112                      next += strlen(current->key))
 113                         extra_bytes += extra;
 114         }
 115
 116         /* Then, allocate a new buffer and copy the file over to the new one,
 117          * but replace occurences of our variables */
 118         char *walk = buf, *destwalk;
 119         char *new = smalloc((stbuf.st_size + extra_bytes + 1) * sizeof(char));
 120         destwalk = new;
 121         while (walk < (buf + stbuf.st_size)) {
 122                 /* Find the next variable */
 123                 SLIST_FOREACH(current, &variables, variables)
 124                         current->next_match = strcasestr(walk, current->key);
 125                 nearest = NULL;
 126                 int distance = stbuf.st_size;
 127                 SLIST_FOREACH(current, &variables, variables) {
 128                         if (current->next_match == NULL)
 129                                 continue;
 130                         if ((current->next_match - walk) < distance) {
 131                                 distance = (current->next_match - walk);
 132                                 nearest = current;
 133                         }
 134                 }
 135                 if (nearest == NULL) {
 136                         /* If there are no more variables, we just copy the rest */
 137                         strncpy(destwalk, walk, (buf + stbuf.st_size) - walk);
 138                         destwalk += (buf + stbuf.st_size) - walk;
 139                         *destwalk = '\0';
 140                         break;
 141                 } else {
 142                         /* Copy until the next variable, then copy its value */
 143                         strncpy(destwalk, walk, distance);
 144                         strncpy(destwalk + distance, nearest->value, strlen(nearest->value));
 145                         walk += distance + strlen(nearest->key);
 146                         destwalk += distance + strlen(nearest->value);
 147                 }
 148         }
 149
 150         yy_scan_string(new);
 151
 152         if (yyparse() != 0) {
 153                 fprintf(stderr, "Could not parse configfile\n");
 154                 exit(1);
 155         }
 156
 157         free(new);
 158         free(buf);
 159 }
 160
 161 %}
 162
 163 %union {
 164         int number;
 165         char *string;
 166         struct Colortriple *color;
 167         struct Assignment *assignment;
 168         struct Binding *binding;
 169 }
 170
 171 %token <number>NUMBER
 172 %token <string>WORD
 173 %token <string>STR
 174 %token <string>STR_NG
 175 %token <string>HEX
 176 %token TOKBIND
 177 %token TOKTERMINAL
 178 %token TOKCOMMENT
 179 %token TOKFONT
 180 %token TOKBINDSYM
 181 %token MODIFIER
 182 %token TOKCONTROL
 183 %token TOKSHIFT
 184 %token WHITESPACE
 185 %token TOKFLOATING_MODIFIER
 186 %token QUOTEDSTRING
 187 %token TOKWORKSPACE
 188 %token TOKSCREEN
 189 %token TOKASSIGN
 190 %token TOKSET
 191 %token TOKIPCSOCKET
 192 %token TOKEXEC
 193 %token TOKCOLOR
 194 %token TOKARROW
 195 %token TOKMODE
 196 %token TOKNEWCONTAINER
 197 %token TOKCONTAINERMODE
 198 %token TOKSTACKLIMIT
 199
 200 %%
 201
 202 lines: /* empty */
 203         | lines WHITESPACE line
 204         | lines line
 205         ;
 206
 207 line:
 208         bindline
 209         | mode
 210         | floating_modifier
 211         | new_container
 212         | workspace
 213         | assign
 214         | ipcsocket
 215         | exec
 216         | color
 217         | terminal
 218         | font
 219         | comment
 220         ;
 221
 222 comment:
 223         TOKCOMMENT
 224         ;
 225
 226 command:
 227         STR
 228         ;
 229
 230 bindline:
 231         binding
 232         {
 233                 TAILQ_INSERT_TAIL(bindings, $<binding>1, bindings);
 234         }
 235         ;
 236
 237 binding:
 238         TOKBIND WHITESPACE bind                 { $<binding>$ = $<binding>3; }
 239         | TOKBINDSYM WHITESPACE bindsym         { $<binding>$ = $<binding>3; }
 240         ;
 241
 242 bind:
 243         binding_modifiers NUMBER WHITESPACE command
 244         {
 245                 printf("\tFound binding mod%d with key %d and command %s\n", $<number>1, $2, $<string>4);
 246                 Binding *new = scalloc(sizeof(Binding));
 247
 248                 new->keycode = $<number>2;
 249                 new->mods = $<number>1;
 250                 new->command = sstrdup($<string>4);
 251
 252                 $<binding>$ = new;
 253         }
 254         ;
 255
 256 bindsym:
 257         binding_modifiers word_or_number WHITESPACE command
 258         {
 259                 printf("\tFound symbolic mod%d with key %s and command %s\n", $<number>1, $<string>2, $<string>4);
 260                 Binding *new = scalloc(sizeof(Binding));
 261
 262                 new->symbol = sstrdup($<string>2);
 263                 new->mods = $<number>1;
 264                 new->command = sstrdup($<string>4);
 265
 266                 $<binding>$ = new;
 267         }
 268         ;
 269
 270 word_or_number:
 271         WORD
 272         | NUMBER
 273         {
 274                 asprintf(&$<string>$, "%d", $1);
 275         }
 276         ;
 277
 278 mode:
 279         TOKMODE WHITESPACE QUOTEDSTRING WHITESPACE '{' modelines '}'
 280         {
 281                 if (strcasecmp($<string>3, "default") == 0) {
 282                         printf("You cannot use the name \"default\" for your mode\n");
 283                         exit(1);
 284                 }
 285                 printf("\t now in mode %s\n", $<string>3);
 286                 printf("\t current bindings = %p\n", current_bindings);
 287                 Binding *binding;
 288                 TAILQ_FOREACH(binding, current_bindings, bindings) {
 289                         printf("got binding on mods %d, keycode %d, symbol %s, command %s\n",
 290                                         binding->mods, binding->keycode, binding->symbol, binding->command);
 291                 }
 292
 293                 struct Mode *mode = scalloc(sizeof(struct Mode));
 294                 mode->name = strdup($<string>3);
 295                 mode->bindings = current_bindings;
 296                 current_bindings = NULL;
 297                 SLIST_INSERT_HEAD(&modes, mode, modes);
 298         }
 299         ;
 300
 301 modelines:
 302         /* empty */
 303         | modelines WHITESPACE modeline
 304         | modelines modeline
 305         ;
 306
 307 modeline:
 308         comment
 309         | binding
 310         {
 311                 if (current_bindings == NULL) {
 312                         current_bindings = scalloc(sizeof(struct bindings_head));
 313                         TAILQ_INIT(current_bindings);
 314                 }
 315
 316                 TAILQ_INSERT_TAIL(current_bindings, $<binding>1, bindings);
 317         }
 318         ;
 319
 320 floating_modifier:
 321         TOKFLOATING_MODIFIER WHITESPACE binding_modifiers
 322         {
 323                 LOG("floating modifier = %d\n", $<number>3);
 324                 config.floating_modifier = $<number>3;
 325         }
 326         ;
 327
 328 new_container:
 329         TOKNEWCONTAINER WHITESPACE TOKCONTAINERMODE
 330         {
 331                 LOG("new containers will be in mode %d\n", $<number>3);
 332                 config.container_mode = $<number>3;
 333
 334                 /* We also need to change the layout of the already existing
 335                  * workspaces here. Workspaces may exist at this point because
 336                  * of the other directives which are modifying workspaces
 337                  * (setting the preferred screen or name). While the workspace
 338                  * objects are already created, they have never been used.
 339                  * Thus, the user very likely awaits the default container mode
 340                  * to trigger in this case, regardless of where it is inside
 341                  * his configuration file. */
 342                 Workspace *ws;
 343                 TAILQ_FOREACH(ws, workspaces, workspaces) {
 344                         if (ws->table == NULL)
 345                                 continue;
 346                         switch_layout_mode(global_conn,
 347                                            ws->table[0][0],
 348                                            config.container_mode);
 349                 }
 350         }
 351         | TOKNEWCONTAINER WHITESPACE TOKSTACKLIMIT WHITESPACE TOKSTACKLIMIT WHITESPACE NUMBER
 352         {
 353                 LOG("stack-limit %d with val %d\n", $<number>5, $<number>7);
 354                 config.container_stack_limit = $<number>5;
 355                 config.container_stack_limit_value = $<number>7;
 356
 357                 /* See the comment above */
 358                 Workspace *ws;
 359                 TAILQ_FOREACH(ws, workspaces, workspaces) {
 360                         if (ws->table == NULL)
 361                                 continue;
 362                         Container *con = ws->table[0][0];
 363                         con->stack_limit = config.container_stack_limit;
 364                         con->stack_limit_value = config.container_stack_limit_value;
 365                 }
 366         }
 367         ;
 368
 369 workspace:
 370         TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKSCREEN WHITESPACE screen workspace_name
 371         {
 372                 int ws_num = $<number>3;
 373                 if (ws_num < 1) {
 374                         LOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
 375                 } else {
 376                         Workspace *ws = workspace_get(ws_num - 1);
 377                         ws->preferred_screen = sstrdup($<string>7);
 378                         if ($<string>8 != NULL)
 379                                 workspace_set_name(ws, $<string>8);
 380                 }
 381         }
 382         | TOKWORKSPACE WHITESPACE NUMBER workspace_name
 383         {
 384                 int ws_num = $<number>3;
 385                 if (ws_num < 1) {
 386                         LOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
 387                 } else {
 388                         if ($<string>4 != NULL)
 389                                 workspace_set_name(workspace_get(ws_num - 1), $<string>4);
 390                 }
 391         }
 392         ;
 393
 394 workspace_name:
 395         /* NULL */                      { $<string>$ = NULL; }
 396         | WHITESPACE QUOTEDSTRING       { $<string>$ = $<string>2; }
 397         | WHITESPACE STR                { $<string>$ = $<string>2; }
 398         ;
 399
 400 screen:
 401         NUMBER              { asprintf(&$<string>$, "%d", $<number>1); }
 402         | NUMBER 'x'        { asprintf(&$<string>$, "%d", $<number>1); }
 403         | NUMBER 'x' NUMBER { asprintf(&$<string>$, "%dx%d", $<number>1, $<number>3); }
 404         | 'x' NUMBER        { asprintf(&$<string>$, "x%d", $<number>2); }
 405         ;
 406
 407 assign:
 408         TOKASSIGN WHITESPACE window_class WHITESPACE optional_arrow assign_target
 409         {
 410                 printf("assignment of %s to %d\n", $<string>3, $<number>6);
 411
 412                 struct Assignment *new = $<assignment>6;
 413                 new->windowclass_title = strdup($<string>3);
 414                 TAILQ_INSERT_TAIL(&assignments, new, assignments);
 415         }
 416         ;
 417
 418 assign_target:
 419         NUMBER
 420         {
 421                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 422                 new->workspace = $<number>1;
 423                 new->floating = ASSIGN_FLOATING_NO;
 424                 $<assignment>$ = new;
 425         }
 426         | '~'
 427         {
 428                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 429                 new->floating = ASSIGN_FLOATING_ONLY;
 430                 $<assignment>$ = new;
 431         }
 432         | '~' NUMBER
 433         {
 434                 struct Assignment *new = scalloc(sizeof(struct Assignment));
 435                 new->workspace = $<number>2;
 436                 new->floating = ASSIGN_FLOATING;
 437                 $<assignment>$ = new;
 438         }
 439         ;
 440
 441 window_class:
 442         QUOTEDSTRING
 443         | STR_NG
 444         ;
 445
 446 optional_arrow:
 447         /* NULL */
 448         | TOKARROW WHITESPACE
 449         ;
 450
 451 ipcsocket:
 452         TOKIPCSOCKET WHITESPACE STR
 453         {
 454                 config.ipc_socket_path = sstrdup($<string>3);
 455         }
 456         ;
 457
 458 exec:
 459         TOKEXEC WHITESPACE STR
 460         {
 461                 struct Autostart *new = smalloc(sizeof(struct Autostart));
 462                 new->command = sstrdup($<string>3);
 463                 TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
 464         }
 465         ;
 466
 467 terminal:
 468         TOKTERMINAL WHITESPACE STR
 469         {
 470                 config.terminal = sstrdup($<string>3);
 471                 printf("terminal %s\n", config.terminal);
 472         }
 473         ;
 474
 475 font:
 476         TOKFONT WHITESPACE STR
 477         {
 478                 config.font = sstrdup($<string>3);
 479                 printf("font %s\n", config.font);
 480         }
 481         ;
 482
 483
 484 color:
 485         TOKCOLOR WHITESPACE colorpixel WHITESPACE colorpixel WHITESPACE colorpixel
 486         {
 487                 struct Colortriple *dest = $<color>1;
 488
 489                 dest->border = $<number>3;
 490                 dest->background = $<number>5;
 491                 dest->text = $<number>7;
 492         }
 493         ;
 494
 495 colorpixel:
 496         '#' HEX
 497         {
 498                 char *hex;
 499                 if (asprintf(&hex, "#%s", $<string>2) == -1)
 500                         die("asprintf()");
 501                 $<number>$ = get_colorpixel(global_conn, hex);
 502                 free(hex);
 503         }
 504         ;
 505
 506
 507 binding_modifiers:
 508         /* NULL */                               { $<number>$ = 0; }
 509         | binding_modifier
 510         | binding_modifiers '+' binding_modifier { $<number>$ = $<number>1 | $<number>3; }
 511         | binding_modifiers '+'                  { $<number>$ = $<number>1; }
 512         ;
 513
 514 binding_modifier:
 515         MODIFIER        { $<number>$ = $<number>1; }
 516         | TOKCONTROL    { $<number>$ = BIND_CONTROL; }
 517         | TOKSHIFT      { $<number>$ = BIND_SHIFT; }
 518         ;