messages.c

   1 /* Copyright (c) 2012-2014, Bastien Dejean
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * 1. Redistributions of source code must retain the above copyright notice, this
   8  *    list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright notice,
  10  *    this list of conditions and the following disclaimer in the documentation
  11  *    and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  17  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  20  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  * The views and conclusions contained in the software and documentation are those
  25  * of the authors and should not be interpreted as representing official policies,
  26  * either expressed or implied, of the FreeBSD Project.
  27  */
  28
  29 #include <errno.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include "bspwm.h"
  34 #include "desktop.h"
  35 #include "ewmh.h"
  36 #include "history.h"
  37 #include "monitor.h"
  38 #include "pointer.h"
  39 #include "query.h"
  40 #include "rule.h"
  41 #include "restore.h"
  42 #include "settings.h"
  43 #include "tree.h"
  44 #include "window.h"
  45 #include "common.h"
  46 #include "subscribe.h"
  47 #include "messages.h"
  48
  49 int handle_message(char *msg, int msg_len, FILE *rsp)
  50 {
  51         int cap = INIT_CAP;
  52         int num = 0;
  53         char **args = malloc(cap * sizeof(char *));
  54         if (args == NULL)
  55                 return MSG_FAILURE;
  56
  57         for (int i = 0, j = 0; i < msg_len; i++) {
  58                 if (msg[i] == 0) {
  59                         args[num++] = msg + j;
  60                         j = i + 1;
  61                 }
  62                 if (num >= cap) {
  63                         cap *= 2;
  64                         char **new = realloc(args, cap * sizeof(char *));
  65                         if (new == NULL) {
  66                                 free(args);
  67                                 return MSG_FAILURE;
  68                         } else {
  69                                 args = new;
  70                         }
  71                 }
  72         }
  73
  74         if (num < 1) {
  75                 free(args);
  76                 return MSG_SYNTAX;
  77         }
  78
  79         char **args_orig = args;
  80         int ret = process_message(args, num, rsp);
  81         free(args_orig);
  82         return ret;
  83 }
  84
  85 int process_message(char **args, int num, FILE *rsp)
  86 {
  87         if (streq("window", *args)) {
  88                 return cmd_window(++args, --num);
  89         } else if (streq("desktop", *args)) {
  90                 return cmd_desktop(++args, --num);
  91         } else if (streq("monitor", *args)) {
  92                 return cmd_monitor(++args, --num);
  93         } else if (streq("query", *args)) {
  94                 return cmd_query(++args, --num, rsp);
  95         } else if (streq("restore", *args)) {
  96                 return cmd_restore(++args, --num);
  97         } else if (streq("control", *args)) {
  98                 return cmd_control(++args, --num, rsp);
  99         } else if (streq("rule", *args)) {
 100                 return cmd_rule(++args, --num, rsp);
 101         } else if (streq("pointer", *args)) {
 102                 return cmd_pointer(++args, --num);
 103         } else if (streq("config", *args)) {
 104                 return cmd_config(++args, --num, rsp);
 105         } else if (streq("quit", *args)) {
 106                 return cmd_quit(++args, --num);
 107         }
 108
 109         return MSG_UNKNOWN;
 110 }
 111
 112 int cmd_window(char **args, int num)
 113 {
 114         if (num < 1)
 115                 return MSG_SYNTAX;
 116
 117         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 118         coordinates_t trg = ref;
 119
 120         if ((*args)[0] != OPT_CHR) {
 121                 if (node_from_desc(*args, &ref, &trg))
 122                         num--, args++;
 123                 else
 124                         return MSG_FAILURE;
 125         }
 126
 127         if (trg.node == NULL)
 128                 return MSG_FAILURE;
 129
 130         bool dirty = false;
 131
 132         while (num > 0) {
 133                 if (streq("-f", *args) || streq("--focus", *args)) {
 134                         coordinates_t dst = trg;
 135                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 136                                 num--, args++;
 137                                 if (!node_from_desc(*args, &trg, &dst))
 138                                         return MSG_FAILURE;
 139                         }
 140                         focus_node(dst.monitor, dst.desktop, dst.node);
 141                 } else if (streq("-d", *args) || streq("--to-desktop", *args)) {
 142                         num--, args++;
 143                         coordinates_t dst;
 144                         if (desktop_from_desc(*args, &trg, &dst)) {
 145                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.desktop->focus)) {
 146                                         trg.monitor = dst.monitor;
 147                                         trg.desktop = dst.desktop;
 148                                 }
 149                         } else {
 150                                 return MSG_FAILURE;
 151                         }
 152                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 153                         num--, args++;
 154                         if (num < 1)
 155                                 return MSG_SYNTAX;
 156                         coordinates_t dst;
 157                         if (monitor_from_desc(*args, &trg, &dst)) {
 158                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.monitor->desk, dst.monitor->desk->focus)) {
 159                                         trg.monitor = dst.monitor;
 160                                         trg.desktop = dst.monitor->desk;
 161                                 }
 162                         } else {
 163                                 return MSG_FAILURE;
 164                         }
 165                 } else if (streq("-w", *args) || streq("--to-window", *args)) {
 166                         num--, args++;
 167                         if (num < 1)
 168                                 return MSG_SYNTAX;
 169                         coordinates_t dst;
 170                         if (node_from_desc(*args, &trg, &dst)) {
 171                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 172                                         trg.monitor = dst.monitor;
 173                                         trg.desktop = dst.desktop;
 174                                 }
 175                         } else {
 176                                 return MSG_FAILURE;
 177                         }
 178                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 179                         num--, args++;
 180                         if (num < 1)
 181                                 return MSG_SYNTAX;
 182                         coordinates_t dst;
 183                         if (node_from_desc(*args, &trg, &dst)) {
 184                                 if (swap_nodes(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 185                                         if (trg.desktop != dst.desktop)
 186                                                 arrange(trg.monitor, trg.desktop);
 187                                         trg.monitor = dst.monitor;
 188                                         trg.desktop = dst.desktop;
 189                                         dirty = true;
 190                                 }
 191                         } else {
 192                                 return MSG_FAILURE;
 193                         }
 194                 } else if (streq("-t", *args) || streq("--toggle", *args)) {
 195                         num--, args++;
 196                         if (num < 1)
 197                                 return MSG_SYNTAX;
 198                         char *key = strtok(*args, EQL_TOK);
 199                         char *val = strtok(NULL, EQL_TOK);
 200                         alter_state_t a;
 201                         bool b;
 202                         if (val == NULL) {
 203                                 a = ALTER_TOGGLE;
 204                         } else {
 205                                 if (parse_bool(val, &b))
 206                                         a = ALTER_SET;
 207                                 else
 208                                         return MSG_FAILURE;
 209                         }
 210                         if (streq("fullscreen", key)) {
 211                                 set_fullscreen(trg.node, (a == ALTER_SET ? b : !trg.node->client->fullscreen));
 212                                 dirty = true;
 213                         } else if (streq("pseudo_tiled", key)) {
 214                                 set_pseudo_tiled(trg.node, (a == ALTER_SET ? b : !trg.node->client->pseudo_tiled));
 215                                 dirty = true;
 216                         } else if (streq("floating", key)) {
 217                                 set_floating(trg.node, (a == ALTER_SET ? b : !trg.node->client->floating));
 218                                 dirty = true;
 219                         } else if (streq("locked", key)) {
 220                                 set_locked(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->locked));
 221                         } else if (streq("sticky", key)) {
 222                                 set_sticky(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->sticky));
 223                         } else if (streq("private", key)) {
 224                                 set_private(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->private));
 225                         } else {
 226                                 return MSG_FAILURE;
 227                         }
 228                 } else if (streq("-p", *args) || streq("--presel", *args)) {
 229                         num--, args++;
 230                         if (num < 1)
 231                                 return MSG_SYNTAX;
 232                         if (!is_tiled(trg.node->client) ||
 233                             trg.desktop->layout != LAYOUT_TILED)
 234                                 return MSG_FAILURE;
 235                         if (streq("cancel", *args)) {
 236                                 reset_mode(&trg);
 237                         } else {
 238                                 direction_t dir;
 239                                 if (parse_direction(*args, &dir)) {
 240                                         double rat = trg.node->split_ratio;
 241                                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 242                                                 num--, args++;
 243                                                 if (sscanf(*args, "%lf", &rat) != 1 || rat <= 0 || rat >= 1)
 244                                                         return MSG_FAILURE;
 245                                         }
 246                                         if (auto_cancel && trg.node->split_mode == MODE_MANUAL &&
 247                                             dir == trg.node->split_dir &&
 248                                             rat == trg.node->split_ratio) {
 249                                                 reset_mode(&trg);
 250                                         } else {
 251                                                 trg.node->split_mode = MODE_MANUAL;
 252                                                 trg.node->split_dir = dir;
 253                                                 trg.node->split_ratio = rat;
 254                                         }
 255                                         window_draw_border(trg.node, trg.desktop->focus == trg.node, mon == trg.monitor);
 256                                 } else {
 257                                         return MSG_FAILURE;
 258                                 }
 259                         }
 260                 } else if (streq("-e", *args) || streq("--edge", *args)) {
 261                         num--, args++;
 262                         if (num < 2)
 263                                 return MSG_SYNTAX;
 264                         if (!is_tiled(trg.node->client))
 265                                 return MSG_FAILURE;
 266                         direction_t dir;
 267                         if (!parse_direction(*args, &dir))
 268                                 return MSG_FAILURE;
 269                         node_t *n = find_fence(trg.node, dir);
 270                         if (n == NULL)
 271                                 return MSG_FAILURE;
 272                         num--, args++;
 273                         if ((*args)[0] == '+' || (*args)[0] == '-') {
 274                                 int pix;
 275                                 if (sscanf(*args, "%i", &pix) == 1) {
 276                                         int max = (n->split_type == TYPE_HORIZONTAL ? n->rectangle.height : n->rectangle.width);
 277                                         double rat = ((max * n->split_ratio) + pix) / max;
 278                                         if (rat > 0 && rat < 1)
 279                                                 n->split_ratio = rat;
 280                                         else
 281                                                 return MSG_FAILURE;
 282                                 } else {
 283                                         return MSG_FAILURE;
 284                                 }
 285                         } else {
 286                                 double rat;
 287                                 if (sscanf(*args, "%lf", &rat) == 1 && rat > 0 && rat < 1)
 288                                         n->split_ratio = rat;
 289                                 else
 290                                         return MSG_FAILURE;
 291                         }
 292                         dirty = true;
 293                 } else if (streq("-r", *args) || streq("--ratio", *args)) {
 294                         num--, args++;
 295                         if (num < 1)
 296                                 return MSG_SYNTAX;
 297                         double rat;
 298                         if (sscanf(*args, "%lf", &rat) == 1 && rat > 0 && rat < 1) {
 299                                 trg.node->split_ratio = rat;
 300                                 window_draw_border(trg.node, trg.desktop->focus == trg.node, mon == trg.monitor);
 301                         } else {
 302                                 return MSG_FAILURE;
 303                         }
 304                 } else if (streq("-R", *args) || streq("--rotate", *args)) {
 305                         num--, args++;
 306                         if (num < 2)
 307                                 return MSG_SYNTAX;
 308                         direction_t dir;
 309                         if (!parse_direction(*args, &dir))
 310                                 return MSG_FAILURE;
 311                         node_t *n = find_fence(trg.node, dir);
 312                         if (n == NULL)
 313                                 return MSG_FAILURE;
 314                         num--, args++;
 315                         int deg;
 316                         if (parse_degree(*args, &deg)) {
 317                                 rotate_tree(n, deg);
 318                                 dirty = true;
 319                         } else {
 320                                 return MSG_FAILURE;
 321                         }
 322                 } else if (streq("-c", *args) || streq("--close", *args)) {
 323                         if (num > 1)
 324                                 return MSG_SYNTAX;
 325                         window_close(trg.node);
 326                 } else if (streq("-k", *args) || streq("--kill", *args)) {
 327                         if (num > 1)
 328                                 return MSG_SYNTAX;
 329                         window_kill(trg.monitor, trg.desktop, trg.node);
 330                         dirty = true;
 331                 } else {
 332                         return MSG_SYNTAX;
 333                 }
 334
 335                 num--, args++;
 336         }
 337
 338         if (dirty)
 339                 arrange(trg.monitor, trg.desktop);
 340
 341         return MSG_SUCCESS;
 342 }
 343
 344 int cmd_desktop(char **args, int num)
 345 {
 346         if (num < 1)
 347                 return MSG_SYNTAX;
 348
 349         coordinates_t ref = {mon, mon->desk, NULL};
 350         coordinates_t trg = ref;
 351
 352         if ((*args)[0] != OPT_CHR) {
 353                 if (desktop_from_desc(*args, &ref, &trg))
 354                         num--, args++;
 355                 else
 356                         return MSG_FAILURE;
 357         }
 358
 359         bool dirty = false;
 360
 361         while (num > 0) {
 362                 if (streq("-f", *args) || streq("--focus", *args)) {
 363                         coordinates_t dst = trg;
 364                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 365                                 num--, args++;
 366                                 if (!desktop_from_desc(*args, &trg, &dst))
 367                                         return MSG_FAILURE;
 368                         }
 369                         if (auto_alternate && dst.desktop == mon->desk) {
 370                                 desktop_select_t sel = {DESKTOP_STATUS_ALL, false, false};
 371                                 history_find_desktop(HISTORY_OLDER, &trg, &dst, sel);
 372                         }
 373                         focus_node(dst.monitor, dst.desktop, dst.desktop->focus);
 374                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 375                         num--, args++;
 376                         if (num < 1)
 377                                 return MSG_SYNTAX;
 378                         if (trg.monitor->desk_head == trg.monitor->desk_tail)
 379                                 return MSG_FAILURE;
 380                         coordinates_t dst;
 381                         if (monitor_from_desc(*args, &trg, &dst)) {
 382                                 transfer_desktop(trg.monitor, dst.monitor, trg.desktop);
 383                                 trg.monitor = dst.monitor;
 384                                 update_current();
 385                         } else {
 386                                 return MSG_FAILURE;
 387                         }
 388                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 389                         num--, args++;
 390                         if (num < 1)
 391                                 return MSG_SYNTAX;
 392                         coordinates_t dst;
 393                         if (desktop_from_desc(*args, &trg, &dst))
 394                                 swap_desktops(trg.monitor, trg.desktop, dst.monitor, dst.desktop);
 395                         else
 396                                 return MSG_FAILURE;
 397                 } else if (streq("-l", *args) || streq("--layout", *args)) {
 398                         num--, args++;
 399                         if (num < 1)
 400                                 return MSG_SYNTAX;
 401                         layout_t lyt;
 402                         cycle_dir_t cyc;
 403                         if (parse_cycle_direction(*args, &cyc))
 404                                 change_layout(trg.monitor, trg.desktop, (trg.desktop->layout + 1) % 2);
 405                         else if (parse_layout(*args, &lyt))
 406                                 change_layout(trg.monitor, trg.desktop, lyt);
 407                         else
 408                                 return MSG_FAILURE;
 409                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 410                         num--, args++;
 411                         if (num < 1)
 412                                 return MSG_SYNTAX;
 413                         snprintf(trg.desktop->name, sizeof(trg.desktop->name), "%s", *args);
 414                         ewmh_update_desktop_names();
 415                         put_status();
 416                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 417                         if (trg.desktop->root == NULL &&
 418                             trg.monitor->desk_head != trg.monitor->desk_tail) {
 419                                 remove_desktop(trg.monitor, trg.desktop);
 420                                 show_desktop(trg.monitor->desk);
 421                                 update_current();
 422                                 return MSG_SUCCESS;
 423                         } else {
 424                                 return MSG_FAILURE;
 425                         }
 426                 } else if (streq("-c", *args) || streq("--cancel-presel", *args)) {
 427                         reset_mode(&trg);
 428                 } else if (streq("-F", *args) || streq("--flip", *args)) {
 429                         num--, args++;
 430                         if (num < 1)
 431                                 return MSG_SYNTAX;
 432                         flip_t flp;
 433                         if (parse_flip(*args, &flp)) {
 434                                 flip_tree(trg.desktop->root, flp);
 435                                 dirty = true;
 436                         } else {
 437                                 return MSG_FAILURE;
 438                         }
 439                 } else if (streq("-R", *args) || streq("--rotate", *args)) {
 440                         num--, args++;
 441                         if (num < 1)
 442                                 return MSG_SYNTAX;
 443                         int deg;
 444                         if (parse_degree(*args, &deg)) {
 445                                 rotate_tree(trg.desktop->root, deg);
 446                                 dirty = true;
 447                         } else {
 448                                 return MSG_FAILURE;
 449                         }
 450                 } else if (streq("-E", *args) || streq("--equalize", *args)) {
 451                         equalize_tree(trg.desktop->root);
 452                         dirty = true;
 453                 } else if (streq("-B", *args) || streq("--balance", *args)) {
 454                         balance_tree(trg.desktop->root);
 455                         dirty = true;
 456                 } else if (streq("-C", *args) || streq("--circulate", *args)) {
 457                         num--, args++;
 458                         if (num < 1)
 459                                 return MSG_SYNTAX;
 460                         circulate_dir_t cir;
 461                         if (parse_circulate_direction(*args, &cir)) {
 462                                 circulate_leaves(trg.monitor, trg.desktop, cir);
 463                                 dirty = true;
 464                         } else {
 465                                 return MSG_FAILURE;
 466                         }
 467                 } else if (streq("-t", *args) || streq("--toggle", *args)) {
 468                         num--, args++;
 469                         if (num < 1)
 470                                 return MSG_SYNTAX;
 471                         char *key = strtok(*args, EQL_TOK);
 472                         char *val = strtok(NULL, EQL_TOK);
 473                         alter_state_t a;
 474                         bool b;
 475                         if (val == NULL) {
 476                                 a = ALTER_TOGGLE;
 477                         } else {
 478                                 if (parse_bool(val, &b))
 479                                         a = ALTER_SET;
 480                                 else
 481                                         return MSG_FAILURE;
 482                         }
 483                         if (streq("floating", key))
 484                                 trg.desktop->floating = (a == ALTER_SET ? b : !trg.desktop->floating);
 485                         else
 486                                 return MSG_FAILURE;
 487                 } else {
 488                         return MSG_SYNTAX;
 489                 }
 490                 num--, args++;
 491         }
 492
 493         if (dirty)
 494                 arrange(trg.monitor, trg.desktop);
 495
 496         return MSG_SUCCESS;
 497 }
 498
 499 int cmd_monitor(char **args, int num)
 500 {
 501         if (num < 1)
 502                 return MSG_SYNTAX;
 503
 504         coordinates_t ref = {mon, NULL, NULL};
 505         coordinates_t trg = ref;
 506
 507         if ((*args)[0] != OPT_CHR) {
 508                 if (monitor_from_desc(*args, &ref, &trg))
 509                         num--, args++;
 510                 else
 511                         return MSG_FAILURE;
 512         }
 513
 514         while (num > 0) {
 515                 if (streq("-f", *args) || streq("--focus", *args)) {
 516                         coordinates_t dst = trg;
 517                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 518                                 num--, args++;
 519                                 if (!monitor_from_desc(*args, &trg, &dst))
 520                                         return MSG_FAILURE;
 521                         }
 522                         if (auto_alternate && dst.monitor == mon) {
 523                                 desktop_select_t sel = {DESKTOP_STATUS_ALL, false, false};
 524                                 history_find_monitor(HISTORY_OLDER, &trg, &dst, sel);
 525                         }
 526                         focus_node(dst.monitor, dst.monitor->desk, dst.monitor->desk->focus);
 527                 } else if (streq("-d", *args) || streq("--reset-desktops", *args)) {
 528                         num--, args++;
 529                         if (num < 1)
 530                                 return MSG_SYNTAX;
 531                         desktop_t *d = trg.monitor->desk_head;
 532                         while (num > 0 && d != NULL) {
 533                                 snprintf(d->name, sizeof(d->name), "%s", *args);
 534                                 initialize_desktop(d);
 535                                 arrange(trg.monitor, d);
 536                                 d = d->next;
 537                                 num--, args++;
 538                         }
 539                         put_status();
 540                         while (num > 0) {
 541                                 add_desktop(trg.monitor, make_desktop(*args));
 542                                 num--, args++;
 543                         }
 544                         while (d != NULL) {
 545                                 desktop_t *next = d->next;
 546                                 if (d == mon->desk)
 547                                         focus_node(trg.monitor, d->prev, d->prev->focus);
 548                                 merge_desktops(trg.monitor, d, mon, mon->desk);
 549                                 remove_desktop(trg.monitor, d);
 550                                 d = next;
 551                         }
 552                 } else if (streq("-a", *args) || streq("--add-desktops", *args)) {
 553                         num--, args++;
 554                         if (num < 1)
 555                                 return MSG_SYNTAX;
 556                         while (num > 0) {
 557                                 add_desktop(trg.monitor, make_desktop(*args));
 558                                 num--, args++;
 559                         }
 560                 } else if (streq("-r", *args) || streq("--remove-desktops", *args)) {
 561                         num--, args++;
 562                         if (num < 1)
 563                                 return MSG_SYNTAX;
 564                         while (num > 0) {
 565                                 coordinates_t dst;
 566                                 if (locate_desktop(*args, &dst) && dst.monitor->desk_head != dst.monitor->desk_tail && dst.desktop->root == NULL) {
 567                                         remove_desktop(dst.monitor, dst.desktop);
 568                                         show_desktop(dst.monitor->desk);
 569                                 }
 570                                 num--, args++;
 571                         }
 572                 } else if (streq("-o", *args) || streq("--order-desktops", *args)) {
 573                         num--, args++;
 574                         if (num < 1)
 575                                 return MSG_SYNTAX;
 576                         desktop_t *d = trg.monitor->desk_head;
 577                         while (d != NULL && num > 0) {
 578                                 desktop_t *next = d->next;
 579                                 coordinates_t dst;
 580                                 if (locate_desktop(*args, &dst) && dst.monitor == trg.monitor) {
 581                                         swap_desktops(trg.monitor, d, dst.monitor, dst.desktop);
 582                                         if (next == dst.desktop)
 583                                                 next = d;
 584                                 }
 585                                 d = next;
 586                                 num--, args++;
 587                         }
 588                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 589                         num--, args++;
 590                         if (num < 1)
 591                                 return MSG_SYNTAX;
 592                         snprintf(trg.monitor->name, sizeof(trg.monitor->name), "%s", *args);
 593                         put_status();
 594                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 595                         num--, args++;
 596                         if (num < 1)
 597                                 return MSG_SYNTAX;
 598                         coordinates_t dst;
 599                         if (monitor_from_desc(*args, &trg, &dst))
 600                                 swap_monitors(trg.monitor, dst.monitor);
 601                         else
 602                                 return MSG_FAILURE;
 603                 } else {
 604                         return MSG_SYNTAX;
 605                 }
 606                 num--, args++;
 607         }
 608
 609         return MSG_SUCCESS;
 610 }
 611
 612 int cmd_query(char **args, int num, FILE *rsp)
 613 {
 614         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 615         coordinates_t trg = {NULL, NULL, NULL};
 616         domain_t dom = DOMAIN_TREE;
 617         int d = 0, t = 0;
 618
 619         while (num > 0) {
 620                 if (streq("-T", *args) || streq("--tree", *args)) {
 621                         dom = DOMAIN_TREE, d++;
 622                 } else if (streq("-M", *args) || streq("--monitors", *args)) {
 623                         dom = DOMAIN_MONITOR, d++;
 624                 } else if (streq("-D", *args) || streq("--desktops", *args)) {
 625                         dom = DOMAIN_DESKTOP, d++;
 626                 } else if (streq("-W", *args) || streq("--windows", *args)) {
 627                         dom = DOMAIN_WINDOW, d++;
 628                 } else if (streq("-H", *args) || streq("--history", *args)) {
 629                         dom = DOMAIN_HISTORY, d++;
 630                 } else if (streq("-S", *args) || streq("--stack", *args)) {
 631                         dom = DOMAIN_STACK, d++;
 632                 } else if (streq("-m", *args) || streq("--monitor", *args)) {
 633                         trg.monitor = ref.monitor;
 634                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 635                                 num--, args++;
 636                                 if (!monitor_from_desc(*args, &ref, &trg))
 637                                         return MSG_FAILURE;
 638                         }
 639                         t++;
 640                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
 641                         trg.monitor = ref.monitor;
 642                         trg.desktop = ref.desktop;
 643                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 644                                 num--, args++;
 645                                 if (!desktop_from_desc(*args, &ref, &trg))
 646                                         return MSG_FAILURE;
 647                         }
 648                         t++;
 649                 } else if (streq("-w", *args) || streq("--window", *args)) {
 650                         trg = ref;
 651                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 652                                 num--, args++;
 653                                 if (!node_from_desc(*args, &ref, &trg))
 654                                         return MSG_FAILURE;
 655                         }
 656                         t++;
 657                 } else {
 658                         return MSG_SYNTAX;
 659                 }
 660                 num--, args++;
 661         }
 662
 663         if (d != 1 || t > 1)
 664                 return MSG_SYNTAX;
 665
 666         if (dom == DOMAIN_HISTORY)
 667                 query_history(trg, rsp);
 668         else if (dom == DOMAIN_STACK)
 669                 query_stack(rsp);
 670         else if (dom == DOMAIN_WINDOW)
 671                 query_windows(trg, rsp);
 672         else
 673                 query_monitors(trg, dom, rsp);
 674
 675         return MSG_SUCCESS;
 676 }
 677
 678 int cmd_rule(char **args, int num, FILE *rsp)
 679 {
 680         if (num < 1)
 681                 return MSG_SYNTAX;
 682         while (num > 0) {
 683                 if (streq("-a", *args) || streq("--add", *args)) {
 684                         num--, args++;
 685                         if (num < 2)
 686                                 return MSG_SYNTAX;
 687                         rule_t *rule = make_rule();
 688                         snprintf(rule->cause, sizeof(rule->cause), "%s", *args);
 689                         num--, args++;
 690                         size_t i = 0;
 691                         while (num > 0) {
 692                                 if (streq("-o", *args) || streq("--one-shot", *args)) {
 693                                         rule->one_shot = true;
 694                                 } else {
 695                                         for (size_t j = 0; i < sizeof(rule->effect) && j < strlen(*args); i++, j++)
 696                                                 rule->effect[i] = (*args)[j];
 697                                         if (num > 1 && i < sizeof(rule->effect))
 698                                                 rule->effect[i++] = ' ';
 699                                 }
 700                                 num--, args++;
 701                         }
 702                         rule->effect[MIN(i, sizeof(rule->effect) - 1)] = '\0';
 703                         add_rule(rule);
 704                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 705                         num--, args++;
 706                         if (num < 1)
 707                                 return MSG_SYNTAX;
 708                         int idx;
 709                         while (num > 0) {
 710                                 if (parse_index(*args, &idx))
 711                                         remove_rule_by_index(idx - 1);
 712                                 else if (streq("tail", *args))
 713                                         remove_rule(rule_tail);
 714                                 else if (streq("head", *args))
 715                                         remove_rule(rule_head);
 716                                 else
 717                                         remove_rule_by_cause(*args);
 718                                 num--, args++;
 719                         }
 720                 } else if (streq("-l", *args) || streq("--list", *args)) {
 721                         num--, args++;
 722                         list_rules(num > 0 ? *args : NULL, rsp);
 723                 } else {
 724                         return MSG_SYNTAX;
 725                 }
 726                 num--, args++;
 727         }
 728
 729         return MSG_SUCCESS;
 730 }
 731
 732 int cmd_pointer(char **args, int num)
 733 {
 734         if (num < 1)
 735                 return MSG_SYNTAX;
 736         while (num > 0) {
 737                 if (streq("-t", *args) || streq("--track", *args)) {
 738                         num--, args++;
 739                         if (num < 2)
 740                                 return MSG_SYNTAX;
 741                         int x, y;
 742                         if (sscanf(*args, "%i", &x) == 1 && sscanf(*(args + 1), "%i", &y) == 1)
 743                                 track_pointer(x, y);
 744                         else
 745                                 return MSG_FAILURE;
 746                         num--, args++;
 747                 } else if (streq("-g", *args) || streq("--grab", *args)) {
 748                         num--, args++;
 749                         if (num < 1)
 750                                 return MSG_SYNTAX;
 751                         pointer_action_t pac;
 752                         if (parse_pointer_action(*args, &pac))
 753                                 grab_pointer(pac);
 754                         else
 755                                 return MSG_FAILURE;
 756                 } else if (streq("-u", *args) || streq("--ungrab", *args)) {
 757                         ungrab_pointer();
 758                 } else {
 759                         return MSG_SYNTAX;
 760                 }
 761                 num--, args++;
 762         }
 763
 764         return MSG_SUCCESS;
 765 }
 766
 767 int cmd_restore(char **args, int num)
 768 {
 769         if (num < 1)
 770                 return MSG_SYNTAX;
 771         while (num > 0) {
 772                 if (streq("-T", *args) || streq("--tree", *args)) {
 773                         num--, args++;
 774                         if (num < 1)
 775                                 return MSG_SYNTAX;
 776                         restore_tree(*args);
 777                 } else if (streq("-H", *args) || streq("--history", *args)) {
 778                         num--, args++;
 779                         if (num < 1)
 780                                 return MSG_SYNTAX;
 781                         restore_history(*args);
 782                 } else if (streq("-S", *args) || streq("--stack", *args)) {
 783                         num--, args++;
 784                         if (num < 1)
 785                                 return MSG_SYNTAX;
 786                         restore_stack(*args);
 787                 } else {
 788                         return MSG_SYNTAX;
 789                 }
 790                 num--, args++;
 791         }
 792
 793         return MSG_SUCCESS;
 794 }
 795
 796 int cmd_control(char **args, int num, FILE *rsp)
 797 {
 798         if (num < 1)
 799                 return MSG_SYNTAX;
 800         while (num > 0) {
 801                 if (streq("--adopt-orphans", *args)) {
 802                         adopt_orphans();
 803                 } else if (streq("--toggle-visibility", *args)) {
 804                         toggle_visibility();
 805                 } else if (streq("--subscribe", *args)) {
 806                         return MSG_SUBSCRIBE;
 807                 } else if (streq("--get-status", *args)) {
 808                         print_status(rsp);
 809                 } else if (streq("--record-history", *args)) {
 810                         num--, args++;
 811                         if (num < 1)
 812                                 return MSG_SYNTAX;
 813                         bool b;
 814                         if (parse_bool(*args, &b))
 815                                 record_history = b;
 816                         else
 817                                 return MSG_SYNTAX;
 818                 } else {
 819                         return MSG_SYNTAX;
 820                 }
 821                 num--, args++;
 822         }
 823
 824         return MSG_SUCCESS;
 825 }
 826
 827 int cmd_config(char **args, int num, FILE *rsp)
 828 {
 829         if (num < 1)
 830                 return MSG_SYNTAX;
 831         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 832         coordinates_t trg = {NULL, NULL, NULL};
 833         if ((*args)[0] == OPT_CHR) {
 834                 if (streq("-m", *args) || streq("--monitor", *args)) {
 835                         num--, args++;
 836                         if (num < 1)
 837                                 return MSG_SYNTAX;
 838                         if (!monitor_from_desc(*args, &ref, &trg))
 839                                 return MSG_FAILURE;
 840                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
 841                         num--, args++;
 842                         if (num < 1)
 843                                 return MSG_SYNTAX;
 844                         if (!desktop_from_desc(*args, &ref, &trg))
 845                                 return MSG_FAILURE;
 846                 } else if (streq("-w", *args) || streq("--window", *args)) {
 847                         num--, args++;
 848                         if (num < 1)
 849                                 return MSG_SYNTAX;
 850                         if (!node_from_desc(*args, &ref, &trg))
 851                                 return MSG_FAILURE;
 852                 } else {
 853                         return MSG_SYNTAX;
 854                 }
 855                 num--, args++;
 856         }
 857         if (num == 2)
 858                 return set_setting(trg, *args, *(args + 1));
 859         else if (num == 1)
 860                 return get_setting(trg, *args, rsp);
 861         else
 862                 return MSG_SYNTAX;
 863 }
 864
 865 int cmd_quit(char **args, int num)
 866 {
 867         if (num > 0 && sscanf(*args, "%i", &exit_status) != 1)
 868                 return MSG_FAILURE;
 869         running = false;
 870         return MSG_SUCCESS;
 871 }
 872
 873 int set_setting(coordinates_t loc, char *name, char *value)
 874 {
 875 #define DESKWINDEFSET(k, v) \
 876                 if (loc.node != NULL) \
 877                         loc.node->client->k = v; \
 878                 else if (loc.desktop != NULL) \
 879                         loc.desktop->k = v; \
 880                 else if (loc.monitor != NULL) \
 881                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) \
 882                                 d->k = v; \
 883                 else \
 884                         k = v;
 885         if (streq("border_width", name)) {
 886                 unsigned int bw;
 887                 if (sscanf(value, "%u", &bw) != 1)
 888                         return MSG_FAILURE;
 889                 DESKWINDEFSET(border_width, bw)
 890 #undef DESKWINDEFSET
 891 #define DESKDEFSET(k, v) \
 892                 if (loc.desktop != NULL) \
 893                         loc.desktop->k = v; \
 894                 else if (loc.monitor != NULL) \
 895                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) \
 896                                 d->k = v; \
 897                 else \
 898                         k = v;
 899         } else if (streq("window_gap", name)) {
 900                 int wg;
 901                 if (sscanf(value, "%i", &wg) != 1)
 902                         return MSG_FAILURE;
 903                 DESKDEFSET(window_gap, wg)
 904 #undef DESKDEFSET
 905 #define MONDESKSET(k, v) \
 906                 if (loc.desktop != NULL) \
 907                         loc.desktop->k = v; \
 908                 else if (loc.monitor != NULL) \
 909                         loc.monitor->k = v; \
 910                 else \
 911                         for (monitor_t *m = mon_head; m != NULL; m = m->next) \
 912                                 m->k = v;
 913         } else if (streq("top_padding", name)) {
 914                 int tp;
 915                 if (sscanf(value, "%i", &tp) != 1)
 916                         return MSG_FAILURE;
 917                 MONDESKSET(top_padding, tp)
 918         } else if (streq("right_padding", name)) {
 919                 int rp;
 920                 if (sscanf(value, "%i", &rp) != 1)
 921                         return MSG_FAILURE;
 922                 MONDESKSET(right_padding, rp)
 923         } else if (streq("bottom_padding", name)) {
 924                 int bp;
 925                 if (sscanf(value, "%i", &bp) != 1)
 926                         return MSG_FAILURE;
 927                 MONDESKSET(bottom_padding, bp)
 928         } else if (streq("left_padding", name)) {
 929                 int lp;
 930                 if (sscanf(value, "%i", &lp) != 1)
 931                         return MSG_FAILURE;
 932                 MONDESKSET(left_padding, lp)
 933 #undef MONDESKSET
 934 #define SETSTR(s) \
 935         } else if (streq(#s, name)) { \
 936                 return snprintf(s, sizeof(s), "%s", value) >= 0;
 937         SETSTR(external_rules_command)
 938         SETSTR(status_prefix)
 939 #undef SETSTR
 940         } else if (streq("split_ratio", name)) {
 941                 double r;
 942                 if (sscanf(value, "%lf", &r) == 1 && r > 0 && r < 1)
 943                         split_ratio = r;
 944                 else
 945                         return MSG_FAILURE;
 946                 return MSG_SUCCESS;
 947 #define SETCOLOR(s) \
 948         } else if (streq(#s, name)) { \
 949                 snprintf(s, sizeof(s), "%s", value);
 950         SETCOLOR(focused_border_color)
 951         SETCOLOR(active_border_color)
 952         SETCOLOR(normal_border_color)
 953         SETCOLOR(presel_border_color)
 954         SETCOLOR(focused_locked_border_color)
 955         SETCOLOR(active_locked_border_color)
 956         SETCOLOR(normal_locked_border_color)
 957         SETCOLOR(focused_sticky_border_color)
 958         SETCOLOR(active_sticky_border_color)
 959         SETCOLOR(normal_sticky_border_color)
 960         SETCOLOR(focused_private_border_color)
 961         SETCOLOR(active_private_border_color)
 962         SETCOLOR(normal_private_border_color)
 963         SETCOLOR(urgent_border_color)
 964 #undef SETCOLOR
 965         } else if (streq("focus_follows_pointer", name)) {
 966                 bool b;
 967                 if (parse_bool(value, &b) && b != focus_follows_pointer) {
 968                         focus_follows_pointer = b;
 969                         for (monitor_t *m = mon_head; m != NULL; m = m->next)
 970                                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 971                                         for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
 972                                                 uint32_t values[] = {CLIENT_EVENT_MASK | (focus_follows_pointer ? XCB_EVENT_MASK_ENTER_WINDOW : 0)};
 973                                                 xcb_change_window_attributes(dpy, n->client->window, XCB_CW_EVENT_MASK, values);
 974                                         }
 975                         if (focus_follows_pointer) {
 976                                 for (monitor_t *m = mon_head; m != NULL; m = m->next)
 977                                         window_show(m->root);
 978                                 enable_motion_recorder();
 979                         } else {
 980                                 for (monitor_t *m = mon_head; m != NULL; m = m->next)
 981                                         window_hide(m->root);
 982                                 disable_motion_recorder();
 983                         }
 984                         return MSG_SUCCESS;
 985                 } else {
 986                         return MSG_FAILURE;
 987                 }
 988 #define SETBOOL(s) \
 989         } else if (streq(#s, name)) { \
 990                 if (!parse_bool(value, &s)) \
 991                         return MSG_FAILURE;
 992                 SETBOOL(borderless_monocle)
 993                 SETBOOL(gapless_monocle)
 994                 SETBOOL(pointer_follows_monitor)
 995                 SETBOOL(apply_floating_atom)
 996                 SETBOOL(auto_alternate)
 997                 SETBOOL(auto_cancel)
 998                 SETBOOL(history_aware_focus)
 999                 SETBOOL(focus_by_distance)
1000                 SETBOOL(ignore_ewmh_focus)
1001 #undef SETBOOL
1002 #define SETMONBOOL(s) \
1003         } else if (streq(#s, name)) { \
1004                 if (!parse_bool(value, &s)) \
1005                         return MSG_FAILURE; \
1006                 if (s) \
1007                         update_monitors();
1008                 SETMONBOOL(remove_disabled_monitors)
1009                 SETMONBOOL(remove_unplugged_monitors)
1010                 SETMONBOOL(merge_overlapping_monitors)
1011 #undef SETMONBOOL
1012         } else {
1013                 return MSG_FAILURE;
1014         }
1015
1016         for (monitor_t *m = mon_head; m != NULL; m = m->next)
1017                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
1018                         arrange(m, d);
1019
1020         return MSG_SUCCESS;
1021 }
1022
1023 int get_setting(coordinates_t loc, char *name, FILE* rsp)
1024 {
1025         if (streq("split_ratio", name))
1026                 fprintf(rsp, "%lf", split_ratio);
1027         else if (streq("window_gap", name))
1028                 if (loc.desktop != NULL)
1029                         fprintf(rsp, "%i", loc.desktop->window_gap);
1030                 else
1031                         fprintf(rsp, "%i", window_gap);
1032         else if (streq("border_width", name))
1033                 if (loc.node != NULL)
1034                         fprintf(rsp, "%u", loc.node->client->border_width);
1035                 else if (loc.desktop != NULL)
1036                         fprintf(rsp, "%u", loc.desktop->border_width);
1037                 else
1038                         fprintf(rsp, "%u", border_width);
1039         else if (streq("external_rules_command", name))
1040                 fprintf(rsp, "%s", external_rules_command);
1041         else if (streq("status_prefix", name))
1042                 fprintf(rsp, "%s", status_prefix);
1043 #define MONDESKGET(k) \
1044         else if (streq(#k, name)) \
1045                 if (loc.desktop != NULL) \
1046                         fprintf(rsp, "%i", loc.desktop->k); \
1047                 else if (loc.monitor != NULL) \
1048                         fprintf(rsp, "%i", loc.monitor->k); \
1049                 else \
1050                         return MSG_FAILURE;
1051         MONDESKGET(top_padding)
1052         MONDESKGET(right_padding)
1053         MONDESKGET(bottom_padding)
1054         MONDESKGET(left_padding)
1055 #undef DESKGET
1056 #define GETCOLOR(s) \
1057         else if (streq(#s, name)) \
1058                 fprintf(rsp, "%s", s);
1059         GETCOLOR(focused_border_color)
1060         GETCOLOR(active_border_color)
1061         GETCOLOR(normal_border_color)
1062         GETCOLOR(presel_border_color)
1063         GETCOLOR(focused_locked_border_color)
1064         GETCOLOR(active_locked_border_color)
1065         GETCOLOR(normal_locked_border_color)
1066         GETCOLOR(focused_sticky_border_color)
1067         GETCOLOR(active_sticky_border_color)
1068         GETCOLOR(normal_sticky_border_color)
1069         GETCOLOR(urgent_border_color)
1070 #undef GETCOLOR
1071 #define GETBOOL(s) \
1072         else if (streq(#s, name)) \
1073                 fprintf(rsp, "%s", BOOLSTR(s));
1074         GETBOOL(borderless_monocle)
1075         GETBOOL(gapless_monocle)
1076         GETBOOL(focus_follows_pointer)
1077         GETBOOL(pointer_follows_monitor)
1078         GETBOOL(apply_floating_atom)
1079         GETBOOL(auto_alternate)
1080         GETBOOL(auto_cancel)
1081         GETBOOL(history_aware_focus)
1082         GETBOOL(focus_by_distance)
1083         GETBOOL(ignore_ewmh_focus)
1084         GETBOOL(remove_disabled_monitors)
1085         GETBOOL(remove_unplugged_monitors)
1086         GETBOOL(merge_overlapping_monitors)
1087 #undef GETBOOL
1088         else
1089                 return MSG_FAILURE;
1090         return MSG_SUCCESS;
1091 }
1092
1093 bool parse_bool(char *value, bool *b)
1094 {
1095         if (streq("true", value) || streq("on", value)) {
1096                 *b = true;
1097                 return true;
1098         } else if (streq("false", value) || streq("off", value)) {
1099                 *b = false;
1100                 return true;
1101         }
1102         return false;
1103 }
1104
1105 bool parse_layout(char *s, layout_t *l)
1106 {
1107         if (streq("monocle", s)) {
1108                 *l = LAYOUT_MONOCLE;
1109                 return true;
1110         } else if (streq("tiled", s)) {
1111                 *l = LAYOUT_TILED;
1112                 return true;
1113         }
1114         return false;
1115 }
1116
1117 bool parse_direction(char *s, direction_t *d)
1118 {
1119         if (streq("right", s)) {
1120                 *d = DIR_RIGHT;
1121                 return true;
1122         } else if (streq("down", s)) {
1123                 *d = DIR_DOWN;
1124                 return true;
1125         } else if (streq("left", s)) {
1126                 *d = DIR_LEFT;
1127                 return true;
1128         } else if (streq("up", s)) {
1129                 *d = DIR_UP;
1130                 return true;
1131         }
1132         return false;
1133 }
1134
1135 bool parse_cycle_direction(char *s, cycle_dir_t *d)
1136 {
1137         if (streq("next", s)) {
1138                 *d = CYCLE_NEXT;
1139                 return true;
1140         } else if (streq("prev", s)) {
1141                 *d = CYCLE_PREV;
1142                 return true;
1143         }
1144         return false;
1145 }
1146
1147 bool parse_circulate_direction(char *s, circulate_dir_t *d)
1148 {
1149         if (streq("forward", s)) {
1150                 *d = CIRCULATE_FORWARD;
1151                 return true;
1152         } else if (streq("backward", s)) {
1153                 *d = CIRCULATE_BACKWARD;
1154                 return true;
1155         }
1156         return false;
1157 }
1158
1159 bool parse_history_direction(char *s, history_dir_t *d)
1160 {
1161         if (streq("older", s)) {
1162                 *d = HISTORY_OLDER;
1163                 return true;
1164         } else if (streq("newer", s)) {
1165                 *d = HISTORY_NEWER;
1166                 return true;
1167         }
1168         return false;
1169 }
1170
1171
1172 bool parse_flip(char *s, flip_t *f)
1173 {
1174         if (streq("horizontal", s)) {
1175                 *f = FLIP_HORIZONTAL;
1176                 return true;
1177         } else if (streq("vertical", s)) {
1178                 *f = FLIP_VERTICAL;
1179                 return true;
1180         }
1181         return false;
1182 }
1183
1184 bool parse_pointer_action(char *s, pointer_action_t *a)
1185 {
1186         if (streq("move", s)) {
1187                 *a = ACTION_MOVE;
1188                 return true;
1189         } else if (streq("resize_corner", s)) {
1190                 *a = ACTION_RESIZE_CORNER;
1191                 return true;
1192         } else if (streq("resize_side", s)) {
1193                 *a = ACTION_RESIZE_SIDE;
1194                 return true;
1195         } else if (streq("focus", s)) {
1196                 *a = ACTION_FOCUS;
1197                 return true;
1198         }
1199         return false;
1200 }
1201
1202 bool parse_degree(char *s, int *d)
1203 {
1204         int i = atoi(s);
1205         while (i < 0)
1206                 i += 360;
1207         while (i > 359)
1208                 i -= 360;
1209         if ((i % 90) != 0) {
1210                 return false;
1211         } else {
1212                 *d = i;
1213                 return true;
1214         }
1215 }
1216
1217 bool parse_window_id(char *s, long int *i)
1218 {
1219         char *end;
1220         errno = 0;
1221         long int ret = strtol(s, &end, 0);
1222         if (errno != 0 || *end != '\0')
1223                 return false;
1224         else
1225                 *i = ret;
1226         return true;
1227 }
1228
1229 bool parse_bool_declaration(char *s, char **key, bool *value, alter_state_t *state)
1230 {
1231         *key = strtok(s, EQL_TOK);
1232         char *v = strtok(NULL, EQL_TOK);
1233         if (v == NULL) {
1234                 *state = ALTER_TOGGLE;
1235                 return true;
1236         } else {
1237                 if (parse_bool(v, value)) {
1238                         *state = ALTER_SET;
1239                         return true;
1240                 } else {
1241                         return false;
1242                 }
1243         }
1244         return false;
1245 }
1246
1247 bool parse_index(char *s, int *i)
1248 {
1249         int idx;
1250         if (sscanf(s, "^%i", &idx) != 1 || idx < 1)
1251                 return false;
1252         *i = idx;
1253         return true;
1254 }