messages.c

   1 /* Copyright (c) 2012, 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
  25 #include <errno.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include "bspwm.h"
  30 #include "desktop.h"
  31 #include "ewmh.h"
  32 #include "history.h"
  33 #include "monitor.h"
  34 #include "pointer.h"
  35 #include "query.h"
  36 #include "rule.h"
  37 #include "restore.h"
  38 #include "settings.h"
  39 #include "tree.h"
  40 #include "window.h"
  41 #include "common.h"
  42 #include "subscribe.h"
  43 #include "messages.h"
  44
  45 int handle_message(char *msg, int msg_len, FILE *rsp)
  46 {
  47         int cap = INIT_CAP;
  48         int num = 0;
  49         char **args = malloc(cap * sizeof(char *));
  50         if (args == NULL)
  51                 return MSG_FAILURE;
  52
  53         for (int i = 0, j = 0; i < msg_len; i++) {
  54                 if (msg[i] == 0) {
  55                         args[num++] = msg + j;
  56                         j = i + 1;
  57                 }
  58                 if (num >= cap) {
  59                         cap *= 2;
  60                         char **new = realloc(args, cap * sizeof(char *));
  61                         if (new == NULL) {
  62                                 free(args);
  63                                 return MSG_FAILURE;
  64                         } else {
  65                                 args = new;
  66                         }
  67                 }
  68         }
  69
  70         if (num < 1) {
  71                 free(args);
  72                 return MSG_SYNTAX;
  73         }
  74
  75         char **args_orig = args;
  76         int ret = process_message(args, num, rsp);
  77         free(args_orig);
  78         return ret;
  79 }
  80
  81 int process_message(char **args, int num, FILE *rsp)
  82 {
  83         if (streq("window", *args)) {
  84                 return cmd_window(++args, --num);
  85         } else if (streq("desktop", *args)) {
  86                 return cmd_desktop(++args, --num);
  87         } else if (streq("monitor", *args)) {
  88                 return cmd_monitor(++args, --num);
  89         } else if (streq("query", *args)) {
  90                 return cmd_query(++args, --num, rsp);
  91         } else if (streq("restore", *args)) {
  92                 return cmd_restore(++args, --num);
  93         } else if (streq("control", *args)) {
  94                 return cmd_control(++args, --num, rsp);
  95         } else if (streq("rule", *args)) {
  96                 return cmd_rule(++args, --num, rsp);
  97         } else if (streq("pointer", *args)) {
  98                 return cmd_pointer(++args, --num);
  99         } else if (streq("config", *args)) {
 100                 return cmd_config(++args, --num, rsp);
 101         } else if (streq("quit", *args)) {
 102                 return cmd_quit(++args, --num);
 103         }
 104
 105         return MSG_UNKNOWN;
 106 }
 107
 108 int cmd_window(char **args, int num)
 109 {
 110         if (num < 1)
 111                 return MSG_SYNTAX;
 112
 113         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 114         coordinates_t trg = ref;
 115
 116         if ((*args)[0] != OPT_CHR) {
 117                 if (node_from_desc(*args, &ref, &trg))
 118                         num--, args++;
 119                 else
 120                         return MSG_FAILURE;
 121         }
 122
 123         if (trg.node == NULL)
 124                 return MSG_FAILURE;
 125
 126         bool dirty = false;
 127
 128         while (num > 0) {
 129                 if (streq("-f", *args) || streq("--focus", *args)) {
 130                         coordinates_t dst = trg;
 131                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 132                                 num--, args++;
 133                                 if (!node_from_desc(*args, &trg, &dst))
 134                                         return MSG_FAILURE;
 135                         }
 136                         focus_node(dst.monitor, dst.desktop, dst.node);
 137                 } else if (streq("-d", *args) || streq("--to-desktop", *args)) {
 138                         num--, args++;
 139                         coordinates_t dst;
 140                         if (desktop_from_desc(*args, &trg, &dst)) {
 141                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.desktop->focus)) {
 142                                         trg.monitor = dst.monitor;
 143                                         trg.desktop = dst.desktop;
 144                                 }
 145                         } else {
 146                                 return MSG_FAILURE;
 147                         }
 148                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 149                         num--, args++;
 150                         if (num < 1)
 151                                 return MSG_SYNTAX;
 152                         coordinates_t dst;
 153                         if (monitor_from_desc(*args, &trg, &dst)) {
 154                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.monitor->desk, dst.monitor->desk->focus)) {
 155                                         trg.monitor = dst.monitor;
 156                                         trg.desktop = dst.monitor->desk;
 157                                 }
 158                         } else {
 159                                 return MSG_FAILURE;
 160                         }
 161                 } else if (streq("-w", *args) || streq("--to-window", *args)) {
 162                         num--, args++;
 163                         if (num < 1)
 164                                 return MSG_SYNTAX;
 165                         coordinates_t dst;
 166                         if (node_from_desc(*args, &trg, &dst)) {
 167                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 168                                         trg.monitor = dst.monitor;
 169                                         trg.desktop = dst.desktop;
 170                                 }
 171                         } else {
 172                                 return MSG_FAILURE;
 173                         }
 174                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 175                         num--, args++;
 176                         if (num < 1)
 177                                 return MSG_SYNTAX;
 178                         coordinates_t dst;
 179                         if (node_from_desc(*args, &trg, &dst)) {
 180                                 if (swap_nodes(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 181                                         if (trg.desktop != dst.desktop)
 182                                                 arrange(trg.monitor, trg.desktop);
 183                                         trg.monitor = dst.monitor;
 184                                         trg.desktop = dst.desktop;
 185                                         dirty = true;
 186                                 }
 187                         } else {
 188                                 return MSG_FAILURE;
 189                         }
 190                 } else if (streq("-t", *args) || streq("--toggle", *args)) {
 191                         num--, args++;
 192                         if (num < 1)
 193                                 return MSG_SYNTAX;
 194                         char *key = strtok(*args, EQL_TOK);
 195                         char *val = strtok(NULL, EQL_TOK);
 196                         alter_state_t a;
 197                         bool b;
 198                         if (val == NULL) {
 199                                 a = ALTER_TOGGLE;
 200                         } else {
 201                                 if (parse_bool(val, &b))
 202                                         a = ALTER_SET;
 203                                 else
 204                                         return MSG_FAILURE;
 205                         }
 206                         if (streq("fullscreen", key)) {
 207                                 set_fullscreen(trg.node, (a == ALTER_SET ? b : !trg.node->client->fullscreen));
 208                                 dirty = true;
 209                         } else if (streq("pseudo_tiled", key)) {
 210                                 set_pseudo_tiled(trg.node, (a == ALTER_SET ? b : !trg.node->client->pseudo_tiled));
 211                                 dirty = true;
 212                         } else if (streq("floating", key)) {
 213                                 set_floating(trg.node, (a == ALTER_SET ? b : !trg.node->client->floating));
 214                                 dirty = true;
 215                         } else if (streq("locked", key)) {
 216                                 set_locked(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->locked));
 217                         } else if (streq("sticky", key)) {
 218                                 set_sticky(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->sticky));
 219                         } else if (streq("private", key)) {
 220                                 set_private(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->client->private));
 221                         } else {
 222                                 return MSG_FAILURE;
 223                         }
 224                 } else if (streq("-p", *args) || streq("--presel", *args)) {
 225                         num--, args++;
 226                         if (num < 1)
 227                                 return MSG_SYNTAX;
 228                         if (!is_tiled(trg.node->client) ||
 229                             trg.desktop->layout != LAYOUT_TILED)
 230                                 return MSG_FAILURE;
 231                         if (streq("cancel", *args)) {
 232                                 reset_mode(&trg);
 233                         } else {
 234                                 direction_t dir;
 235                                 if (parse_direction(*args, &dir)) {
 236                                         double rat = trg.node->split_ratio;
 237                                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 238                                                 num--, args++;
 239                                                 if (sscanf(*args, "%lf", &rat) != 1 || rat <= 0 || rat >= 1)
 240                                                         return MSG_FAILURE;
 241                                         }
 242                                         if (auto_cancel && trg.node->split_mode == MODE_MANUAL &&
 243                                             dir == trg.node->split_dir &&
 244                                             rat == trg.node->split_ratio) {
 245                                                 reset_mode(&trg);
 246                                         } else {
 247                                                 trg.node->split_mode = MODE_MANUAL;
 248                                                 trg.node->split_dir = dir;
 249                                                 trg.node->split_ratio = rat;
 250                                         }
 251                                         window_draw_border(trg.node, trg.desktop->focus == trg.node, mon == trg.monitor);
 252                                 } else {
 253                                         return MSG_FAILURE;
 254                                 }
 255                         }
 256                 } else if (streq("-e", *args) || streq("--edge", *args)) {
 257                         num--, args++;
 258                         if (num < 2)
 259                                 return MSG_SYNTAX;
 260                         if (!is_tiled(trg.node->client))
 261                                 return MSG_FAILURE;
 262                         direction_t dir;
 263                         if (!parse_direction(*args, &dir))
 264                                 return MSG_FAILURE;
 265                         node_t *n = find_fence(trg.node, dir);
 266                         if (n == NULL)
 267                                 return MSG_FAILURE;
 268                         num--, args++;
 269                         if ((*args)[0] == '+' || (*args)[0] == '-') {
 270                                 int pix;
 271                                 if (sscanf(*args, "%i", &pix) == 1) {
 272                                         int max = (n->split_type == TYPE_HORIZONTAL ? n->rectangle.height : n->rectangle.width);
 273                                         double rat = ((max * n->split_ratio) + pix) / max;
 274                                         if (rat > 0 && rat < 1)
 275                                                 n->split_ratio = rat;
 276                                         else
 277                                                 return MSG_FAILURE;
 278                                 } else {
 279                                         return MSG_FAILURE;
 280                                 }
 281                         } else {
 282                                 double rat;
 283                                 if (sscanf(*args, "%lf", &rat) == 1 && rat > 0 && rat < 1)
 284                                         n->split_ratio = rat;
 285                                 else
 286                                         return MSG_FAILURE;
 287                         }
 288                         dirty = true;
 289                 } else if (streq("-r", *args) || streq("--ratio", *args)) {
 290                         num--, args++;
 291                         if (num < 1)
 292                                 return MSG_SYNTAX;
 293                         double rat;
 294                         if (sscanf(*args, "%lf", &rat) == 1 && rat > 0 && rat < 1) {
 295                                 trg.node->split_ratio = rat;
 296                                 window_draw_border(trg.node, trg.desktop->focus == trg.node, mon == trg.monitor);
 297                         } else {
 298                                 return MSG_FAILURE;
 299                         }
 300                 } else if (streq("-R", *args) || streq("--rotate", *args)) {
 301                         num--, args++;
 302                         if (num < 2)
 303                                 return MSG_SYNTAX;
 304                         direction_t dir;
 305                         if (!parse_direction(*args, &dir))
 306                                 return MSG_FAILURE;
 307                         node_t *n = find_fence(trg.node, dir);
 308                         if (n == NULL)
 309                                 return MSG_FAILURE;
 310                         num--, args++;
 311                         int deg;
 312                         if (parse_degree(*args, &deg)) {
 313                                 rotate_tree(n, deg);
 314                                 dirty = true;
 315                         } else {
 316                                 return MSG_FAILURE;
 317                         }
 318                 } else if (streq("-c", *args) || streq("--close", *args)) {
 319                         if (num > 1)
 320                                 return MSG_SYNTAX;
 321                         window_close(trg.node);
 322                 } else if (streq("-k", *args) || streq("--kill", *args)) {
 323                         if (num > 1)
 324                                 return MSG_SYNTAX;
 325                         window_kill(trg.monitor, trg.desktop, trg.node);
 326                         dirty = true;
 327                 } else {
 328                         return MSG_SYNTAX;
 329                 }
 330
 331                 num--, args++;
 332         }
 333
 334         if (dirty)
 335                 arrange(trg.monitor, trg.desktop);
 336
 337         return MSG_SUCCESS;
 338 }
 339
 340 int cmd_desktop(char **args, int num)
 341 {
 342         if (num < 1)
 343                 return MSG_SYNTAX;
 344
 345         coordinates_t ref = {mon, mon->desk, NULL};
 346         coordinates_t trg = ref;
 347
 348         if ((*args)[0] != OPT_CHR) {
 349                 if (desktop_from_desc(*args, &ref, &trg))
 350                         num--, args++;
 351                 else
 352                         return MSG_FAILURE;
 353         }
 354
 355         bool dirty = false;
 356
 357         while (num > 0) {
 358                 if (streq("-f", *args) || streq("--focus", *args)) {
 359                         coordinates_t dst = trg;
 360                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 361                                 num--, args++;
 362                                 if (!desktop_from_desc(*args, &trg, &dst))
 363                                         return MSG_FAILURE;
 364                         }
 365                         if (auto_alternate && dst.desktop == mon->desk) {
 366                                 desktop_select_t sel = {DESKTOP_STATUS_ALL, false, false};
 367                                 history_find_desktop(HISTORY_OLDER, &trg, &dst, sel);
 368                         }
 369                         focus_node(dst.monitor, dst.desktop, dst.desktop->focus);
 370                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 371                         num--, args++;
 372                         if (num < 1)
 373                                 return MSG_SYNTAX;
 374                         if (trg.monitor->desk_head == trg.monitor->desk_tail)
 375                                 return MSG_FAILURE;
 376                         coordinates_t dst;
 377                         if (monitor_from_desc(*args, &trg, &dst)) {
 378                                 transfer_desktop(trg.monitor, dst.monitor, trg.desktop);
 379                                 trg.monitor = dst.monitor;
 380                                 update_current();
 381                         } else {
 382                                 return MSG_FAILURE;
 383                         }
 384                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 385                         num--, args++;
 386                         if (num < 1)
 387                                 return MSG_SYNTAX;
 388                         coordinates_t dst;
 389                         if (desktop_from_desc(*args, &trg, &dst))
 390                                 swap_desktops(trg.monitor, trg.desktop, dst.monitor, dst.desktop);
 391                         else
 392                                 return MSG_FAILURE;
 393                 } else if (streq("-l", *args) || streq("--layout", *args)) {
 394                         num--, args++;
 395                         if (num < 1)
 396                                 return MSG_SYNTAX;
 397                         layout_t lyt;
 398                         cycle_dir_t cyc;
 399                         if (parse_cycle_direction(*args, &cyc))
 400                                 change_layout(trg.monitor, trg.desktop, (trg.desktop->layout + 1) % 2);
 401                         else if (parse_layout(*args, &lyt))
 402                                 change_layout(trg.monitor, trg.desktop, lyt);
 403                         else
 404                                 return MSG_FAILURE;
 405                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 406                         num--, args++;
 407                         if (num < 1)
 408                                 return MSG_SYNTAX;
 409                         snprintf(trg.desktop->name, sizeof(trg.desktop->name), "%s", *args);
 410                         ewmh_update_desktop_names();
 411                         put_status();
 412                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 413                         if (trg.desktop->root == NULL &&
 414                             trg.monitor->desk_head != trg.monitor->desk_tail) {
 415                                 remove_desktop(trg.monitor, trg.desktop);
 416                                 show_desktop(trg.monitor->desk);
 417                                 update_current();
 418                                 return MSG_SUCCESS;
 419                         } else {
 420                                 return MSG_FAILURE;
 421                         }
 422                 } else if (streq("-c", *args) || streq("--cancel-presel", *args)) {
 423                         reset_mode(&trg);
 424                 } else if (streq("-F", *args) || streq("--flip", *args)) {
 425                         num--, args++;
 426                         if (num < 1)
 427                                 return MSG_SYNTAX;
 428                         flip_t flp;
 429                         if (parse_flip(*args, &flp)) {
 430                                 flip_tree(trg.desktop->root, flp);
 431                                 dirty = true;
 432                         } else {
 433                                 return MSG_FAILURE;
 434                         }
 435                 } else if (streq("-R", *args) || streq("--rotate", *args)) {
 436                         num--, args++;
 437                         if (num < 1)
 438                                 return MSG_SYNTAX;
 439                         int deg;
 440                         if (parse_degree(*args, &deg)) {
 441                                 rotate_tree(trg.desktop->root, deg);
 442                                 dirty = true;
 443                         } else {
 444                                 return MSG_FAILURE;
 445                         }
 446                 } else if (streq("-E", *args) || streq("--equalize", *args)) {
 447                         equalize_tree(trg.desktop->root);
 448                         dirty = true;
 449                 } else if (streq("-B", *args) || streq("--balance", *args)) {
 450                         balance_tree(trg.desktop->root);
 451                         dirty = true;
 452                 } else if (streq("-C", *args) || streq("--circulate", *args)) {
 453                         num--, args++;
 454                         if (num < 1)
 455                                 return MSG_SYNTAX;
 456                         circulate_dir_t cir;
 457                         if (parse_circulate_direction(*args, &cir)) {
 458                                 circulate_leaves(trg.monitor, trg.desktop, cir);
 459                                 dirty = true;
 460                         } else {
 461                                 return MSG_FAILURE;
 462                         }
 463                 } else if (streq("-t", *args) || streq("--toggle", *args)) {
 464                         num--, args++;
 465                         if (num < 1)
 466                                 return MSG_SYNTAX;
 467                         char *key = strtok(*args, EQL_TOK);
 468                         char *val = strtok(NULL, EQL_TOK);
 469                         alter_state_t a;
 470                         bool b;
 471                         if (val == NULL) {
 472                                 a = ALTER_TOGGLE;
 473                         } else {
 474                                 if (parse_bool(val, &b))
 475                                         a = ALTER_SET;
 476                                 else
 477                                         return MSG_FAILURE;
 478                         }
 479                         if (streq("floating", key))
 480                                 trg.desktop->floating = (a == ALTER_SET ? b : !trg.desktop->floating);
 481                         else
 482                                 return MSG_FAILURE;
 483                 } else {
 484                         return MSG_SYNTAX;
 485                 }
 486                 num--, args++;
 487         }
 488
 489         if (dirty)
 490                 arrange(trg.monitor, trg.desktop);
 491
 492         return MSG_SUCCESS;
 493 }
 494
 495 int cmd_monitor(char **args, int num)
 496 {
 497         if (num < 1)
 498                 return MSG_SYNTAX;
 499
 500         coordinates_t ref = {mon, NULL, NULL};
 501         coordinates_t trg = ref;
 502
 503         if ((*args)[0] != OPT_CHR) {
 504                 if (monitor_from_desc(*args, &ref, &trg))
 505                         num--, args++;
 506                 else
 507                         return MSG_FAILURE;
 508         }
 509
 510         while (num > 0) {
 511                 if (streq("-f", *args) || streq("--focus", *args)) {
 512                         coordinates_t dst = trg;
 513                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 514                                 num--, args++;
 515                                 if (!monitor_from_desc(*args, &trg, &dst))
 516                                         return MSG_FAILURE;
 517                         }
 518                         if (auto_alternate && dst.monitor == mon) {
 519                                 desktop_select_t sel = {DESKTOP_STATUS_ALL, false, false};
 520                                 history_find_monitor(HISTORY_OLDER, &trg, &dst, sel);
 521                         }
 522                         focus_node(dst.monitor, dst.monitor->desk, dst.monitor->desk->focus);
 523                 } else if (streq("-d", *args) || streq("--reset-desktops", *args)) {
 524                         num--, args++;
 525                         if (num < 1)
 526                                 return MSG_SYNTAX;
 527                         desktop_t *d = trg.monitor->desk_head;
 528                         while (num > 0 && d != NULL) {
 529                                 snprintf(d->name, sizeof(d->name), "%s", *args);
 530                                 initialize_desktop(d);
 531                                 arrange(trg.monitor, d);
 532                                 d = d->next;
 533                                 num--, args++;
 534                         }
 535                         put_status();
 536                         while (num > 0) {
 537                                 add_desktop(trg.monitor, make_desktop(*args));
 538                                 num--, args++;
 539                         }
 540                         while (d != NULL) {
 541                                 desktop_t *next = d->next;
 542                                 if (d == mon->desk)
 543                                         focus_node(trg.monitor, d->prev, d->prev->focus);
 544                                 merge_desktops(trg.monitor, d, mon, mon->desk);
 545                                 remove_desktop(trg.monitor, d);
 546                                 d = next;
 547                         }
 548                 } else if (streq("-a", *args) || streq("--add-desktops", *args)) {
 549                         num--, args++;
 550                         if (num < 1)
 551                                 return MSG_SYNTAX;
 552                         while (num > 0) {
 553                                 add_desktop(trg.monitor, make_desktop(*args));
 554                                 num--, args++;
 555                         }
 556                 } else if (streq("-r", *args) || streq("--remove-desktops", *args)) {
 557                         num--, args++;
 558                         if (num < 1)
 559                                 return MSG_SYNTAX;
 560                         while (num > 0) {
 561                                 coordinates_t dst;
 562                                 if (locate_desktop(*args, &dst) && dst.monitor->desk_head != dst.monitor->desk_tail && dst.desktop->root == NULL) {
 563                                         remove_desktop(dst.monitor, dst.desktop);
 564                                         show_desktop(dst.monitor->desk);
 565                                 }
 566                                 num--, args++;
 567                         }
 568                 } else if (streq("-o", *args) || streq("--order-desktops", *args)) {
 569                         num--, args++;
 570                         if (num < 1)
 571                                 return MSG_SYNTAX;
 572                         desktop_t *d = trg.monitor->desk_head;
 573                         while (d != NULL && num > 0) {
 574                                 desktop_t *next = d->next;
 575                                 coordinates_t dst;
 576                                 if (locate_desktop(*args, &dst) && dst.monitor == trg.monitor) {
 577                                         swap_desktops(trg.monitor, d, dst.monitor, dst.desktop);
 578                                         if (next == dst.desktop)
 579                                                 next = d;
 580                                 }
 581                                 d = next;
 582                                 num--, args++;
 583                         }
 584                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 585                         num--, args++;
 586                         if (num < 1)
 587                                 return MSG_SYNTAX;
 588                         snprintf(trg.monitor->name, sizeof(trg.monitor->name), "%s", *args);
 589                         put_status();
 590                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 591                         num--, args++;
 592                         if (num < 1)
 593                                 return MSG_SYNTAX;
 594                         coordinates_t dst;
 595                         if (monitor_from_desc(*args, &trg, &dst))
 596                                 swap_monitors(trg.monitor, dst.monitor);
 597                         else
 598                                 return MSG_FAILURE;
 599                 } else {
 600                         return MSG_SYNTAX;
 601                 }
 602                 num--, args++;
 603         }
 604
 605         return MSG_SUCCESS;
 606 }
 607
 608 int cmd_query(char **args, int num, FILE *rsp)
 609 {
 610         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 611         coordinates_t trg = {NULL, NULL, NULL};
 612         domain_t dom = DOMAIN_TREE;
 613         int d = 0, t = 0;
 614
 615         while (num > 0) {
 616                 if (streq("-T", *args) || streq("--tree", *args)) {
 617                         dom = DOMAIN_TREE, d++;
 618                 } else if (streq("-M", *args) || streq("--monitors", *args)) {
 619                         dom = DOMAIN_MONITOR, d++;
 620                 } else if (streq("-D", *args) || streq("--desktops", *args)) {
 621                         dom = DOMAIN_DESKTOP, d++;
 622                 } else if (streq("-W", *args) || streq("--windows", *args)) {
 623                         dom = DOMAIN_WINDOW, d++;
 624                 } else if (streq("-H", *args) || streq("--history", *args)) {
 625                         dom = DOMAIN_HISTORY, d++;
 626                 } else if (streq("-S", *args) || streq("--stack", *args)) {
 627                         dom = DOMAIN_STACK, d++;
 628                 } else if (streq("-m", *args) || streq("--monitor", *args)) {
 629                         trg.monitor = ref.monitor;
 630                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 631                                 num--, args++;
 632                                 if (!monitor_from_desc(*args, &ref, &trg))
 633                                         return MSG_FAILURE;
 634                         }
 635                         t++;
 636                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
 637                         trg.monitor = ref.monitor;
 638                         trg.desktop = ref.desktop;
 639                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 640                                 num--, args++;
 641                                 if (!desktop_from_desc(*args, &ref, &trg))
 642                                         return MSG_FAILURE;
 643                         }
 644                         t++;
 645                 } else if (streq("-w", *args) || streq("--window", *args)) {
 646                         trg = ref;
 647                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 648                                 num--, args++;
 649                                 if (!node_from_desc(*args, &ref, &trg))
 650                                         return MSG_FAILURE;
 651                         }
 652                         t++;
 653                 } else {
 654                         return MSG_SYNTAX;
 655                 }
 656                 num--, args++;
 657         }
 658
 659         if (d != 1 || t > 1)
 660                 return MSG_SYNTAX;
 661
 662         if (dom == DOMAIN_HISTORY)
 663                 query_history(trg, rsp);
 664         else if (dom == DOMAIN_STACK)
 665                 query_stack(rsp);
 666         else if (dom == DOMAIN_WINDOW)
 667                 query_windows(trg, rsp);
 668         else
 669                 query_monitors(trg, dom, rsp);
 670
 671         return MSG_SUCCESS;
 672 }
 673
 674 int cmd_rule(char **args, int num, FILE *rsp)
 675 {
 676         if (num < 1)
 677                 return MSG_SYNTAX;
 678         while (num > 0) {
 679                 if (streq("-a", *args) || streq("--add", *args)) {
 680                         num--, args++;
 681                         if (num < 2)
 682                                 return MSG_SYNTAX;
 683                         rule_t *rule = make_rule();
 684                         snprintf(rule->cause, sizeof(rule->cause), "%s", *args);
 685                         num--, args++;
 686                         size_t i = 0;
 687                         while (num > 0) {
 688                                 if (streq("-o", *args) || streq("--one-shot", *args)) {
 689                                         rule->one_shot = true;
 690                                 } else {
 691                                         for (size_t j = 0; i < sizeof(rule->effect) && j < strlen(*args); i++, j++)
 692                                                 rule->effect[i] = (*args)[j];
 693                                         if (num > 1 && i < sizeof(rule->effect))
 694                                                 rule->effect[i++] = ' ';
 695                                 }
 696                                 num--, args++;
 697                         }
 698                         rule->effect[MIN(i, sizeof(rule->effect) - 1)] = '\0';
 699                         add_rule(rule);
 700                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 701                         num--, args++;
 702                         if (num < 1)
 703                                 return MSG_SYNTAX;
 704                         int idx;
 705                         while (num > 0) {
 706                                 if (parse_index(*args, &idx))
 707                                         remove_rule_by_index(idx - 1);
 708                                 else if (streq("tail", *args))
 709                                         remove_rule(rule_tail);
 710                                 else if (streq("head", *args))
 711                                         remove_rule(rule_head);
 712                                 else
 713                                         remove_rule_by_cause(*args);
 714                                 num--, args++;
 715                         }
 716                 } else if (streq("-l", *args) || streq("--list", *args)) {
 717                         num--, args++;
 718                         list_rules(num > 0 ? *args : NULL, rsp);
 719                 } else {
 720                         return MSG_SYNTAX;
 721                 }
 722                 num--, args++;
 723         }
 724
 725         return MSG_SUCCESS;
 726 }
 727
 728 int cmd_pointer(char **args, int num)
 729 {
 730         if (num < 1)
 731                 return MSG_SYNTAX;
 732         while (num > 0) {
 733                 if (streq("-t", *args) || streq("--track", *args)) {
 734                         num--, args++;
 735                         if (num < 2)
 736                                 return MSG_SYNTAX;
 737                         int x, y;
 738                         if (sscanf(*args, "%i", &x) == 1 && sscanf(*(args + 1), "%i", &y) == 1)
 739                                 track_pointer(x, y);
 740                         else
 741                                 return MSG_FAILURE;
 742                         num--, args++;
 743                 } else if (streq("-g", *args) || streq("--grab", *args)) {
 744                         num--, args++;
 745                         if (num < 1)
 746                                 return MSG_SYNTAX;
 747                         pointer_action_t pac;
 748                         if (parse_pointer_action(*args, &pac))
 749                                 grab_pointer(pac);
 750                         else
 751                                 return MSG_FAILURE;
 752                 } else if (streq("-u", *args) || streq("--ungrab", *args)) {
 753                         ungrab_pointer();
 754                 } else {
 755                         return MSG_SYNTAX;
 756                 }
 757                 num--, args++;
 758         }
 759
 760         return MSG_SUCCESS;
 761 }
 762
 763 int cmd_restore(char **args, int num)
 764 {
 765         if (num < 1)
 766                 return MSG_SYNTAX;
 767         while (num > 0) {
 768                 if (streq("-T", *args) || streq("--tree", *args)) {
 769                         num--, args++;
 770                         if (num < 1)
 771                                 return MSG_SYNTAX;
 772                         restore_tree(*args);
 773                 } else if (streq("-H", *args) || streq("--history", *args)) {
 774                         num--, args++;
 775                         if (num < 1)
 776                                 return MSG_SYNTAX;
 777                         restore_history(*args);
 778                 } else if (streq("-S", *args) || streq("--stack", *args)) {
 779                         num--, args++;
 780                         if (num < 1)
 781                                 return MSG_SYNTAX;
 782                         restore_stack(*args);
 783                 } else {
 784                         return MSG_SYNTAX;
 785                 }
 786                 num--, args++;
 787         }
 788
 789         return MSG_SUCCESS;
 790 }
 791
 792 int cmd_control(char **args, int num, FILE *rsp)
 793 {
 794         if (num < 1)
 795                 return MSG_SYNTAX;
 796         while (num > 0) {
 797                 if (streq("--adopt-orphans", *args)) {
 798                         adopt_orphans();
 799                 } else if (streq("--toggle-visibility", *args)) {
 800                         toggle_visibility();
 801                 } else if (streq("--subscribe", *args)) {
 802                         return MSG_SUBSCRIBE;
 803                 } else if (streq("--get-status", *args)) {
 804                         print_status(rsp);
 805                 } else if (streq("--record-history", *args)) {
 806                         num--, args++;
 807                         if (num < 1)
 808                                 return MSG_SYNTAX;
 809                         bool b;
 810                         if (parse_bool(*args, &b))
 811                                 record_history = b;
 812                         else
 813                                 return MSG_SYNTAX;
 814                 } else {
 815                         return MSG_SYNTAX;
 816                 }
 817                 num--, args++;
 818         }
 819
 820         return MSG_SUCCESS;
 821 }
 822
 823 int cmd_config(char **args, int num, FILE *rsp)
 824 {
 825         if (num < 1)
 826                 return MSG_SYNTAX;
 827         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 828         coordinates_t trg = {NULL, NULL, NULL};
 829         if ((*args)[0] == OPT_CHR) {
 830                 if (streq("-m", *args) || streq("--monitor", *args)) {
 831                         num--, args++;
 832                         if (num < 1)
 833                                 return MSG_SYNTAX;
 834                         if (!monitor_from_desc(*args, &ref, &trg))
 835                                 return MSG_FAILURE;
 836                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
 837                         num--, args++;
 838                         if (num < 1)
 839                                 return MSG_SYNTAX;
 840                         if (!desktop_from_desc(*args, &ref, &trg))
 841                                 return MSG_FAILURE;
 842                 } else if (streq("-w", *args) || streq("--window", *args)) {
 843                         num--, args++;
 844                         if (num < 1)
 845                                 return MSG_SYNTAX;
 846                         if (!node_from_desc(*args, &ref, &trg))
 847                                 return MSG_FAILURE;
 848                 } else {
 849                         return MSG_SYNTAX;
 850                 }
 851                 num--, args++;
 852         }
 853         if (num == 2)
 854                 return set_setting(trg, *args, *(args + 1));
 855         else if (num == 1)
 856                 return get_setting(trg, *args, rsp);
 857         else
 858                 return MSG_SYNTAX;
 859 }
 860
 861 int cmd_quit(char **args, int num)
 862 {
 863         if (num > 0 && sscanf(*args, "%i", &exit_status) != 1)
 864                 return MSG_FAILURE;
 865         running = false;
 866         return MSG_SUCCESS;
 867 }
 868
 869 int set_setting(coordinates_t loc, char *name, char *value)
 870 {
 871 #define DESKWINDEFSET(k, v) \
 872                 if (loc.node != NULL) \
 873                         loc.node->client->k = v; \
 874                 else if (loc.desktop != NULL) \
 875                         loc.desktop->k = v; \
 876                 else if (loc.monitor != NULL) \
 877                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) \
 878                                 d->k = v; \
 879                 else \
 880                         k = v;
 881         if (streq("border_width", name)) {
 882                 unsigned int bw;
 883                 if (sscanf(value, "%u", &bw) != 1)
 884                         return MSG_FAILURE;
 885                 DESKWINDEFSET(border_width, bw)
 886 #undef DESKWINDEFSET
 887 #define DESKDEFSET(k, v) \
 888                 if (loc.desktop != NULL) \
 889                         loc.desktop->k = v; \
 890                 else if (loc.monitor != NULL) \
 891                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) \
 892                                 d->k = v; \
 893                 else \
 894                         k = v;
 895         } else if (streq("window_gap", name)) {
 896                 int wg;
 897                 if (sscanf(value, "%i", &wg) != 1)
 898                         return MSG_FAILURE;
 899                 DESKDEFSET(window_gap, wg)
 900 #undef DESKDEFSET
 901 #define MONDESKSET(k, v) \
 902                 if (loc.desktop != NULL) \
 903                         loc.desktop->k = v; \
 904                 else if (loc.monitor != NULL) \
 905                         loc.monitor->k = v; \
 906                 else \
 907                         for (monitor_t *m = mon_head; m != NULL; m = m->next) \
 908                                 m->k = v;
 909         } else if (streq("top_padding", name)) {
 910                 int tp;
 911                 if (sscanf(value, "%i", &tp) != 1)
 912                         return MSG_FAILURE;
 913                 MONDESKSET(top_padding, tp)
 914         } else if (streq("right_padding", name)) {
 915                 int rp;
 916                 if (sscanf(value, "%i", &rp) != 1)
 917                         return MSG_FAILURE;
 918                 MONDESKSET(right_padding, rp)
 919         } else if (streq("bottom_padding", name)) {
 920                 int bp;
 921                 if (sscanf(value, "%i", &bp) != 1)
 922                         return MSG_FAILURE;
 923                 MONDESKSET(bottom_padding, bp)
 924         } else if (streq("left_padding", name)) {
 925                 int lp;
 926                 if (sscanf(value, "%i", &lp) != 1)
 927                         return MSG_FAILURE;
 928                 MONDESKSET(left_padding, lp)
 929 #undef MONDESKSET
 930 #define SETSTR(s) \
 931         } else if (streq(#s, name)) { \
 932                 return snprintf(s, sizeof(s), "%s", value) >= 0;
 933         SETSTR(external_rules_command)
 934         SETSTR(status_prefix)
 935 #undef SETSTR
 936         } else if (streq("split_ratio", name)) {
 937                 double r;
 938                 if (sscanf(value, "%lf", &r) == 1 && r > 0 && r < 1)
 939                         split_ratio = r;
 940                 else
 941                         return MSG_FAILURE;
 942                 return MSG_SUCCESS;
 943 #define SETCOLOR(s) \
 944         } else if (streq(#s, name)) { \
 945                 snprintf(s, sizeof(s), "%s", value);
 946         SETCOLOR(focused_border_color)
 947         SETCOLOR(active_border_color)
 948         SETCOLOR(normal_border_color)
 949         SETCOLOR(presel_border_color)
 950         SETCOLOR(focused_locked_border_color)
 951         SETCOLOR(active_locked_border_color)
 952         SETCOLOR(normal_locked_border_color)
 953         SETCOLOR(focused_sticky_border_color)
 954         SETCOLOR(active_sticky_border_color)
 955         SETCOLOR(normal_sticky_border_color)
 956         SETCOLOR(focused_private_border_color)
 957         SETCOLOR(active_private_border_color)
 958         SETCOLOR(normal_private_border_color)
 959         SETCOLOR(urgent_border_color)
 960 #undef SETCOLOR
 961         } else if (streq("initial_polarity", name)) {
 962                 child_polarity_t p;
 963                 if (parse_child_polarity(value, &p)) {
 964                         initial_polarity = p;
 965                 } else {
 966                         return MSG_FAILURE;
 967                 }
 968         } else if (streq("focus_follows_pointer", name)) {
 969                 bool b;
 970                 if (parse_bool(value, &b) && b != focus_follows_pointer) {
 971                         focus_follows_pointer = b;
 972                         for (monitor_t *m = mon_head; m != NULL; m = m->next)
 973                                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 974                                         for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
 975                                                 uint32_t values[] = {CLIENT_EVENT_MASK | (focus_follows_pointer ? XCB_EVENT_MASK_ENTER_WINDOW : 0)};
 976                                                 xcb_change_window_attributes(dpy, n->client->window, XCB_CW_EVENT_MASK, values);
 977                                         }
 978                         if (focus_follows_pointer) {
 979                                 for (monitor_t *m = mon_head; m != NULL; m = m->next)
 980                                         window_show(m->root);
 981                                 enable_motion_recorder();
 982                         } else {
 983                                 for (monitor_t *m = mon_head; m != NULL; m = m->next)
 984                                         window_hide(m->root);
 985                                 disable_motion_recorder();
 986                         }
 987                         return MSG_SUCCESS;
 988                 } else {
 989                         return MSG_FAILURE;
 990                 }
 991 #define SETBOOL(s) \
 992         } else if (streq(#s, name)) { \
 993                 if (!parse_bool(value, &s)) \
 994                         return MSG_FAILURE;
 995                 SETBOOL(borderless_monocle)
 996                 SETBOOL(gapless_monocle)
 997                 SETBOOL(pointer_follows_focus)
 998                 SETBOOL(pointer_follows_monitor)
 999                 SETBOOL(apply_floating_atom)
1000                 SETBOOL(auto_alternate)
1001                 SETBOOL(auto_cancel)
1002                 SETBOOL(history_aware_focus)
1003                 SETBOOL(focus_by_distance)
1004                 SETBOOL(ignore_ewmh_focus)
1005                 SETBOOL(center_pseudo_tiled)
1006 #undef SETBOOL
1007 #define SETMONBOOL(s) \
1008         } else if (streq(#s, name)) { \
1009                 if (!parse_bool(value, &s)) \
1010                         return MSG_FAILURE; \
1011                 if (s) \
1012                         update_monitors();
1013                 SETMONBOOL(remove_disabled_monitors)
1014                 SETMONBOOL(remove_unplugged_monitors)
1015                 SETMONBOOL(merge_overlapping_monitors)
1016 #undef SETMONBOOL
1017         } else {
1018                 return MSG_FAILURE;
1019         }
1020
1021         for (monitor_t *m = mon_head; m != NULL; m = m->next)
1022                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
1023                         arrange(m, d);
1024
1025         return MSG_SUCCESS;
1026 }
1027
1028 int get_setting(coordinates_t loc, char *name, FILE* rsp)
1029 {
1030         if (streq("split_ratio", name))
1031                 fprintf(rsp, "%lf", split_ratio);
1032         else if (streq("window_gap", name))
1033                 if (loc.desktop != NULL)
1034                         fprintf(rsp, "%i", loc.desktop->window_gap);
1035                 else
1036                         fprintf(rsp, "%i", window_gap);
1037         else if (streq("border_width", name))
1038                 if (loc.node != NULL)
1039                         fprintf(rsp, "%u", loc.node->client->border_width);
1040                 else if (loc.desktop != NULL)
1041                         fprintf(rsp, "%u", loc.desktop->border_width);
1042                 else
1043                         fprintf(rsp, "%u", border_width);
1044         else if (streq("external_rules_command", name))
1045                 fprintf(rsp, "%s", external_rules_command);
1046         else if (streq("status_prefix", name))
1047                 fprintf(rsp, "%s", status_prefix);
1048         else if (streq("initial_polarity", name))
1049                 fprintf(rsp, "%s", initial_polarity == FIRST_CHILD ? "first_child" : "second_child");
1050 #define MONDESKGET(k) \
1051         else if (streq(#k, name)) \
1052                 if (loc.desktop != NULL) \
1053                         fprintf(rsp, "%i", loc.desktop->k); \
1054                 else if (loc.monitor != NULL) \
1055                         fprintf(rsp, "%i", loc.monitor->k); \
1056                 else \
1057                         return MSG_FAILURE;
1058         MONDESKGET(top_padding)
1059         MONDESKGET(right_padding)
1060         MONDESKGET(bottom_padding)
1061         MONDESKGET(left_padding)
1062 #undef DESKGET
1063 #define GETCOLOR(s) \
1064         else if (streq(#s, name)) \
1065                 fprintf(rsp, "%s", s);
1066         GETCOLOR(focused_border_color)
1067         GETCOLOR(active_border_color)
1068         GETCOLOR(normal_border_color)
1069         GETCOLOR(presel_border_color)
1070         GETCOLOR(focused_locked_border_color)
1071         GETCOLOR(active_locked_border_color)
1072         GETCOLOR(normal_locked_border_color)
1073         GETCOLOR(focused_sticky_border_color)
1074         GETCOLOR(active_sticky_border_color)
1075         GETCOLOR(normal_sticky_border_color)
1076         GETCOLOR(urgent_border_color)
1077 #undef GETCOLOR
1078 #define GETBOOL(s) \
1079         else if (streq(#s, name)) \
1080                 fprintf(rsp, "%s", BOOLSTR(s));
1081         GETBOOL(borderless_monocle)
1082         GETBOOL(gapless_monocle)
1083         GETBOOL(focus_follows_pointer)
1084         GETBOOL(pointer_follows_focus)
1085         GETBOOL(pointer_follows_monitor)
1086         GETBOOL(apply_floating_atom)
1087         GETBOOL(auto_alternate)
1088         GETBOOL(auto_cancel)
1089         GETBOOL(history_aware_focus)
1090         GETBOOL(focus_by_distance)
1091         GETBOOL(ignore_ewmh_focus)
1092         GETBOOL(center_pseudo_tiled)
1093         GETBOOL(remove_disabled_monitors)
1094         GETBOOL(remove_unplugged_monitors)
1095         GETBOOL(merge_overlapping_monitors)
1096 #undef GETBOOL
1097         else
1098                 return MSG_FAILURE;
1099         return MSG_SUCCESS;
1100 }
1101
1102 bool parse_bool(char *value, bool *b)
1103 {
1104         if (streq("true", value) || streq("on", value)) {
1105                 *b = true;
1106                 return true;
1107         } else if (streq("false", value) || streq("off", value)) {
1108                 *b = false;
1109                 return true;
1110         }
1111         return false;
1112 }
1113
1114 bool parse_layout(char *s, layout_t *l)
1115 {
1116         if (streq("monocle", s)) {
1117                 *l = LAYOUT_MONOCLE;
1118                 return true;
1119         } else if (streq("tiled", s)) {
1120                 *l = LAYOUT_TILED;
1121                 return true;
1122         }
1123         return false;
1124 }
1125
1126 bool parse_direction(char *s, direction_t *d)
1127 {
1128         if (streq("right", s)) {
1129                 *d = DIR_RIGHT;
1130                 return true;
1131         } else if (streq("down", s)) {
1132                 *d = DIR_DOWN;
1133                 return true;
1134         } else if (streq("left", s)) {
1135                 *d = DIR_LEFT;
1136                 return true;
1137         } else if (streq("up", s)) {
1138                 *d = DIR_UP;
1139                 return true;
1140         }
1141         return false;
1142 }
1143
1144 bool parse_cycle_direction(char *s, cycle_dir_t *d)
1145 {
1146         if (streq("next", s)) {
1147                 *d = CYCLE_NEXT;
1148                 return true;
1149         } else if (streq("prev", s)) {
1150                 *d = CYCLE_PREV;
1151                 return true;
1152         }
1153         return false;
1154 }
1155
1156 bool parse_circulate_direction(char *s, circulate_dir_t *d)
1157 {
1158         if (streq("forward", s)) {
1159                 *d = CIRCULATE_FORWARD;
1160                 return true;
1161         } else if (streq("backward", s)) {
1162                 *d = CIRCULATE_BACKWARD;
1163                 return true;
1164         }
1165         return false;
1166 }
1167
1168 bool parse_history_direction(char *s, history_dir_t *d)
1169 {
1170         if (streq("older", s)) {
1171                 *d = HISTORY_OLDER;
1172                 return true;
1173         } else if (streq("newer", s)) {
1174                 *d = HISTORY_NEWER;
1175                 return true;
1176         }
1177         return false;
1178 }
1179
1180
1181 bool parse_flip(char *s, flip_t *f)
1182 {
1183         if (streq("horizontal", s)) {
1184                 *f = FLIP_HORIZONTAL;
1185                 return true;
1186         } else if (streq("vertical", s)) {
1187                 *f = FLIP_VERTICAL;
1188                 return true;
1189         }
1190         return false;
1191 }
1192
1193 bool parse_pointer_action(char *s, pointer_action_t *a)
1194 {
1195         if (streq("move", s)) {
1196                 *a = ACTION_MOVE;
1197                 return true;
1198         } else if (streq("resize_corner", s)) {
1199                 *a = ACTION_RESIZE_CORNER;
1200                 return true;
1201         } else if (streq("resize_side", s)) {
1202                 *a = ACTION_RESIZE_SIDE;
1203                 return true;
1204         } else if (streq("focus", s)) {
1205                 *a = ACTION_FOCUS;
1206                 return true;
1207         }
1208         return false;
1209 }
1210
1211 bool parse_child_polarity(char *s, child_polarity_t *p)
1212 {
1213         if (streq("first_child", s)) {
1214                 *p = FIRST_CHILD;
1215                 return true;
1216         } else if (streq("second_child", s)) {
1217                 *p = SECOND_CHILD;
1218                 return true;
1219         }
1220         return false;
1221 }
1222
1223 bool parse_degree(char *s, int *d)
1224 {
1225         int i = atoi(s);
1226         while (i < 0)
1227                 i += 360;
1228         while (i > 359)
1229                 i -= 360;
1230         if ((i % 90) != 0) {
1231                 return false;
1232         } else {
1233                 *d = i;
1234                 return true;
1235         }
1236 }
1237
1238 bool parse_window_id(char *s, long int *i)
1239 {
1240         char *end;
1241         errno = 0;
1242         long int ret = strtol(s, &end, 0);
1243         if (errno != 0 || *end != '\0')
1244                 return false;
1245         else
1246                 *i = ret;
1247         return true;
1248 }
1249
1250 bool parse_bool_declaration(char *s, char **key, bool *value, alter_state_t *state)
1251 {
1252         *key = strtok(s, EQL_TOK);
1253         char *v = strtok(NULL, EQL_TOK);
1254         if (v == NULL) {
1255                 *state = ALTER_TOGGLE;
1256                 return true;
1257         } else {
1258                 if (parse_bool(v, value)) {
1259                         *state = ALTER_SET;
1260                         return true;
1261                 } else {
1262                         return false;
1263                 }
1264         }
1265         return false;
1266 }
1267
1268 bool parse_index(char *s, int *i)
1269 {
1270         int idx;
1271         if (sscanf(s, "^%i", &idx) != 1 || idx < 1)
1272                 return false;
1273         *i = idx;
1274         return true;
1275 }